Abstract: In this paper, single stage conversion method is used for integration of the Solar Photo Voltaic (SPV) with the utility grid. Three phase voltage source converter is used to extract the maximum power from the PV source as well as to integrate the SPV to the grid. The power produced by SPV changes with change in solar irradiance, hence, a Maximum Power Point Tracking (MPPT) scheme is used to obtain the maximum power at a particular irradiance. The Fizzy Logic Control (FLC) and Adaptive Network based Fuzzy Inference System (ANFIS) are proposed for the DC link voltage control. The power produced by the SPV is used to supply the local load demand, and the extra power, if any, is fed to the utility grid or the deficit power is supplied by the grid. The proposed control scheme is validated using Matlab/Simulink under different irradiance values.

Abstract: A constant on-time pulse width control-based apparatus capable of detecting a transient event of a voltage converter includes a specific comparator, a logic circuit, and a controller. The specific comparator generates a logic control signal to the logic circuit according to two resultant signals of the controller. The logic circuit generates a pulse control signal with an on-time pulse width to charge an output capacitor according to the logic control signal. The controller generates the two resultant signals to the specific comparator by generating a voltage ramp signal and amplifying an output voltage ripple signal based on a reference voltage, and detects the transient event to dynamically adjust the on-time pulse width of the pulse control signal according to the amplified output voltage ripple signal.

Abstract: This paper presents a novel sensor-less SRM drive based on adaptive-fuzzy logic control. In this method, SRM drive is model-based and current error between actual current and model current is from the proposed speed estimation. Speed estimation has been calculated in two stages; in first stage, current error is used for the compensation of SRM current and next stage obtains compensated torque using compensated current. Finally, compensated torque and electro mechanical differential equations are applied to speed estimation. This sensor-less SRM drive has been simulated using MATLAB/SIMULIK for two speed ranges. These results show that proposed sensor-less SRM drive has good performance in various speeds. Also, on-line adaptive-fuzzy logic improves compensated current and torque estimation. This sensor-less SRM drive has advantages of estimation accuracy, simple structure, fast computation, and low cost.

Abstract: The present invention provides a realization method of logic control of VB/VC (Microsoft Visual Basic 60/Microsoft Visual C++) and PLC (Programmable Logic Controller) on the basis of serial communication The realization method provided by the invention is free of writing a logic T-shaped program in the PLC of a lower computer, all the logic controls may be realized at an upper computer, and industrial control may be realized According to the new method provided by the invention, the upper computer is only needed to send instruments to realize monitoring of an input port and an output port with no need for writing any logic program in the PLC, and only one instrument is sent to perform all the stable and reliable monitoring of objects to be monitored (X, Y M, D and other elements); through adoption of a 'pipeline' mode in the aspect of signal decoding, operation coincidence of a CPU is reduced, and the response time of a program is short; and programs may be managed by category, the PLC of any point may be controlled without point limitation, and wiring, free of circuit interlocking, is greatly simplified in the aspect of circuit connection with safety and convenience

Abstract: The invention discloses an MPPT unified control circuit, and the circuit comprises a maximum power point tracking module which enable a solar cell array to be fixed at a maximum power point; a constant voltage control module which adjusts a bus voltage to remain constant; a current limiting module which enables the charging current of a storage battery to remain less than or equal to the maximum charging current of the storage battery; and a logic control module which achieves the automatic switching of various types of function modes according to different working conditions. According to the invention, the circuit has functions of solar cell array MPPT, constant voltage control and current limiting control, and achieves the automatic switching of different function modes, achieves the optimized control strategy of an energy system, and is suitable for an energy system of a long-endurance solar aircraft.

Abstract: The invention discloses a multi-beam selection smart antenna communication device and communication method thereof. The device combines the antenna elements of an antenna array to form different wireless beams to scan workstations in connection to find the strongest signal path, produce directional beams and forge connections to ensure that a terminal and an AP are connected with a shortest path. The device comprises a workstation monitoring unit for detecting connected workstations in real time and recording the MAC addresses of the workstations, a beam scanning algorithm unit for finding the best RSSI beam with the use of directional beams to scan over a 360-degree space, and an underlying communication unit for sending a command control flow to an FPGA logic control module of an antenna system; through the FPGA logic control module, the electrical switch and the capacitance tubes are controlled to adjust the antenna array to form a specific waveform. The invention also discloses a communication method of the device.

Abstract: The present invention discloses a system logic control method and apparatus, and belongs to the field of computer technologies. The system logic control method comprises: obtaining a behavior tree instance, wherein the behavior tree instance comprises at least one behavior tree execution path for controlling system logic; determining a behavior tree execution path according to a behavior tree execution environment of the behavior tree instance, wherein the behavior tree execution environment is used to transfer running information of the system to the behavior tree instance; and performing logic control on the system according to the determined behavior tree execution path. Embodiments of the present invention resolve a problem in the prior art that a response rate of a system is affected because a finite-state machine is too bloated when the finite-state machine is used to perform logic control on a system and it is required to constantly modify or add states in the finite-state machine and a corresponding state transition relation as system logic complexity increases.

Abstract: An embodiment of the invention provides a network switching method, apparatus and terminal The network switching method comprises the steps of detecting status information of the terminal, the status information containing power information and data traffic information in a preset time period; if the status information matches a preset switching rule based on power information and data traffic demand, acquiring a logic control parameter of an antenna switch of the terminal; adjusting the logic control parameter based on a preset target frequency band table which contains at least a frequency band with power consumption higher than a preset power consumption threshold; and switching a current network working frequency band based on the adjusted logic control parameter The invention can be used for reducing battery consumption and improving endurance based on the status information of the terminal

Abstract: This paper presents the development and the implementation of a logic threshold control strategy for light hybrid vehicle with parallel architecture. The aim of the control logic is to maximize the efficiency of the thermal engine during its operation. To verify its effectiveness, the logic has been first simulated and then implemented on the test bench.

Abstract: A web transfer process is composed of many drive rolls to control the tension and the speed at a desired value to secure the integrity of the operation. This research aims to verify our proposed method of automatic tuning of the controllers parameters using a neuro-fuzzy logic control (NFLC) for the web tension decentralized control system. This paper shows the feasibility of the NFLC; during the operation, the parameters of the fuzzy controllers are adjusted by using the back-propagation method. The membership functions and the output of the fuzzy interference are adaptively tuned based on the output errors, and those magnitudes become modest as learning proceeds.

Abstract: The invention discloses a current transformer interface testing device and method. The device comprises a PLC, an industrial control computer, an analog input interface, an analog output interface, a digital input interface, a digital output interface and a communication interface. The PLC is connected with corresponding interfaces of an external current transformer respectively through the analog input interface, the analog output interface, the digital input interface and the digital output interface. The PLC is connected with the industrial control computer. The industrial control computer is connected with the current transformer through the communication interface or the PLC is connected with the current transformer through the communication interface. According to the invention, the industrial control computer is utilized, after combined with the PLC, the industrial control computer has the high-speed operation capability, standardized modules and the strong expansion capability, and various interfaces of the current transformer are rapidly tested by means of software logic control; in addition, the mobile structure is used, so that the device can effectively, rapidly and flexibly complete the interface testing work in all directions.

Abstract: The invention relates to the field of electronic power control, in particular to a control system for I-type and T-type three-level bidirectional PWM (Pulse-Width Modulation) rectifiers The control system comprises an analog quantity data collecting and conditioning circuit, an IGBT (Insulated Gate Bipolar Translator) magnetic insulation drive circuit, a control circuit consisting of a DSP (Digital Signal Processor) and a CPLD (Complex Programmable Logic Device), a relay output and digital signal input device, and a fault recording and remote communication device, and is characterized in that a Hall sensor data collecting circuit, an IGBT drive circuit and an input and output interface circuit are connected with a CPLD chip; a communication circuit and a fault recording circuit are connected with the DSP; and the DSP and the CPLD are connected with interrupt signals through data, an address bus and a PWM output signal The control system can be compatible with T-type and T-type three-level topology frameworks, the control system adopts a control framework of the DSP and the CPLD, and the CPLD is responsible for logic control, three-level PWM signal detection and correction functions and the like as a coprocessor, so that the system reliability is improved, and the budget burden of the DSP is alleviated

Abstract: The invention discloses an intelligent control system for high beams of a vehicle and belongs to the field of vehicle active safety. The system comprises a road condition camera shooting detection processing module and a high beam control module. The road condition camera shooting detection processing module comprises a camera shooting module, a data caching module, a logic control module, an MCU processor, a temperature detection module, a 3.3 V power module, a 2.8 V power module and a control signal output drive module. The high beam control module comprises a double-voltage output power module, a signal input module, an output level switching module, a high beam control output module and a beam control MCU processor. By the adoption of the system, the influence factors of ambient light to a driver are integrated, a high beam controller is independent of a vehicle-mounted center control system, manual switching switch signals of steering column headlamps are sent to the high beam controller to serve as safety auxiliary signals, the reliability of a high beam control system is improved, and the intelligent control system for the high beams is suitable for transforming headlamps of various vehicles to be low in cost and high in practicality.

Abstract: The invention discloses a composite multifunctional novel OCP control circuit. The composite multifunctional novel OCP control circuit comprises OCP DC voltage input, sampling-end voltage input, an OCP compensation circuit, a logic control circuit, a simulation adder, a comparator and a current pump circuit, wherein the input end of the current pump circuit is connected with the output end of the logic control circuit, the output end of the current pump circuit and the output end of the simulator adder are connected with the same input end of the comparator, the current pump circuit outputs currents periodically changing in oscillation mode according to PWM signals output by the logic control circuit, and output voltages of the simulator adder generate periodical oscillation change along with output currents of the current pump circuit; and the comparator compares the sampling-end voltage input and output voltages of the simulation adder and outputs corresponding logic level to the logic control circuit to enable the logic control circuit to output the corresponding PWM signals so as to control a power switch of a switch power supply. According to the invention, the load carrying capacity of the switch power supply is enhanced, and overpower protection of the switch power supply is also accelerated.

Abstract: The utility model provides a person in charge that ON -OFF control circuit and a switch circuit, ON -OFF control circuit were coupled the switch main circuit manages with assisting, including permanent logic control circuit and the current detection circuit of turn -offing, current detection circuit one end is coupled the switch main circuit, and the other end is coupled the permanent logic control circuit of shutoff, and current detection circuit receives command current and sampling and is responsible for the person in charge's electric current when turn -offing, with command current with be responsible for the electric current and carry out the comparison, the pipe was assisted in the permanent logic control circuit of shutoff timing turn -on time and control are responsible for opens off state, when assistance pipe turn -on time reaches the invariable turn -off time, detect inductive current and whether be less than command current, if inductive current is not less than command current, then prolong the turn -off time of being responsible for, after inductive current is less than command current or is less than the certain threshold value of command current, then be responsible for switching on. The utility model discloses a ON -OFF control circuit and switch circuit aim at realizes output voltage's steady voltage control to realize the voltage conversion of littleer duty cycle.

Abstract: The invention discloses a circuit for realizing large-power power supply by using routine Power Over Ethernet (POE) and an implementation method. The circuit includes a POE switch; a plurality of Powered Device (PD) detection units which realize the negotiation power supply of the POE switch under the control of a 802.3af protocol, and output a high voltage output by the POE switch to corresponding DC/DC power supply converting units; a logic control unit used for detecting whether each PD detection unit finishes the protocol negotiation and establishes the connection, and generating control signals for controlling each DC/DC power supply converting unit; the multiple DC/DC power supply converting units which have the synchronizing function, and convert the high voltage output by the POE switch into the input voltage required by each current-sharing unit under the control of logic control unit; and the multiple current-sharing units used for balancing each input current and obtaining a consistent voltage at a uniform output terminal so as to supply the voltage to a powered unit. According to the invention, the purpose of large-power power supply can be realized by using common Power Sourcing Equipment (PSE).

Abstract: The invention discloses a voltage arranging mode of bus merging unit double configuration based on OLP switching of a 110 kV system in an intelligent substation double-bus wiring mode. A set of bus PT merging units identical with an existing one in configuration is added to each segment of bus intelligent control cabinet, two merging units are identical in configuration, and each segment of bust intelligent control cabinet is further additionally provided with a set of complete OLP optical fiber automatic switching device and also comprises a remote expert intelligent judging system. The remote expert intelligent judging system is used for realizing abnormal signal automatic grasping and remotely switching control. The remote expert intelligent judging system comprises a bus voltage monitoring relay wiring loop and a remote intelligent control switching logic loop. According to the invention, the related equipment and the logic control loop are added, self-healing and seamless control switching of faulted equipment are realized, the reliability of the operation of the power grid is substantially improved, equipment maintenance can be arranged at any time, and the convenience of overhaul and maintenance is improved.

Abstract: The utility model discloses a RS232 and RS485422 interface converter based on microprocessor, including RS232 interface unit, RS485422 double nip unit, logic control unit, microprocessor and power supply unit, the RS232 interface unit passes through logic control unit and the unit connection of RS485422 double nip, is equipped with to be used for listening the detection port of RS232 interface unit output level signaling protocol frame and the control port that is used for controlling RS485 transmission direction on microprocessor, microprocessor is connected with RS232 interface unit and logic control unit respectively to according to the mode of configuration parameter through its control port and logic control unit switching RS232 commentaries on classics RS485 or RS422, based on microprocessor conversion mode and control signal transmission orientation, work efficiency has been improved

Abstract: The invention provides a successive approximation analog to digital converter device, comprising a sampling and holding module, an N-bit digital to analog converter, a clocked comparator, a reference delay module, a successive approximation control module and a speed detection module. The speed detection module determines to output a first speed signal SLOW1 or a second speed signal SLOW2 according to a comparison end signal RDY output by the clocked comparator and a clock signal CLK-Tth output by the reference delay module. The successive approximation control module comprises a logic control module and a nearest judgment logic module, and the nearest judgment logic module controls the output of the logic control module according to the first speed signal SLOW1 or the second speed signal SLOW2. According to the successive approximation analog to digital converter device provided by the invention, the least significant bit is optimized by the nearest judgment logic module to improve the conversion precision of the successive approximation analog to digital converter, and the successive approximation analog to digital converter device provided by the invention is simple in logic structure and control logic and is easy to achieve, thereby being particularly suitable for such application occasions as low voltage communication systems with relatively high precision requirements, etc.

Abstract: This Software defined networks helps to realize extraordinary services that can be easily embedded in network operations of switch. It provokes the decomposition of the control and data planes. The control plane is more extensible, as it is unproblematic to change or introduce any new functionality into the network. It is studied that any new integration can be easily added up with a very low line of code (LOC). The work proposes a fuzzy based approach for traffic provisioning in SDN. Fu zzy Logic Control System (FLCS) is a controller co mp rising of two fuzzy systems - Label Switched Path setup System (LsS) and Traffic Splitting System (TSS). The co mputation of dynamic status of Load and Delay is utilized by LsS to arrange the paths in preference order. The attained Link Capacity and Utilizat ion Rate are emp loying by TSS for maintain ing congestion free path. Created three different topologies and performed ping reachability test and executed iperf testing tool for performance analysis on Mininet framework.The impact of this is to facilitate better decision making for splitting the traffic for different capable paths. Simulat ion setup is deployed using OpenFlow Switches and Controllers to study their performance. The packet delivery rat io remained above 98% , showing rare chances of congestion and delay was below than 2.6 seconds with TTL in range of 60-80 milliseconds.

Abstract: The invention discloses an I2C line multiplexing control logic method under startup and shutdown states of a server. When a BMC (Baseboard Management Controller) cannot be started at an ultralow temperature, a temperature sensor of a mainboard is connected to a CPLD (Complex Programmable Logic Device) logic control device to sense a temperature of the mainboard, and determine whether a mainboard heating function needs to be performed, at this time, the CPLD is an I2C primary device and the temperature sensor is an I2C slave device; after successful booting, two groups of I2C buses of the BMC are switched to control the CPLD and the temperature sensor respectively through an I2C bus switch, and at this time, the BMC is the I2C primary device, and the CPLD and the temperature sensor are the I2C salve devices. According to the I2C line multiplexing control logic method under the startup and shutdown states of the server provided by the invention, under a shutdown state, the BMC and other control units manage a Thermal sensor and other I2C controllers, so that after starting up, other devices control the I2C controllers, thus the problem that computers are not started under a low temperature state can be solved.

Abstract: The invention belongs to the technical field of LED display application, and discloses an LED display screen, a display circuit and a display control chip thereof. Since the display control chip including a decoding module, a logic control module, N switch modules and a shift register is employed, the shift register generates N sampling signals according to shift clock signals and decoding sampling signals and outputs the N sampling signals to the logic control module. The decoding module decodes row-line switching signals according to the shift clock signals and outputs the shift clock signals and the decoded row-line switching signals to the logic control module, the logic control module outputs N row-line switching signals to N switch modules according to the shift clock signals, the decoded row-line switching signals and N sampling signals, so that N switch modules output row-scanning control signal to drive LED display arrays. The problem that a conventional dynamic LCD display screen has too many application chips, complex PCB wiring and poor application reliability is solved.

Abstract: The present invention discloses a DC feedback type DC electronic load for locomotive power supply tests. The DC feedback type DC electronic load comprises a main circuit and a control circuit, wherein the main circuit is cascaded by a boost chopping circuit and a phase-shifted full-bridge circuit; and the control circuit is composed of a digital signal processing unit DSP and a logic control unit CPLD, is connected with an upper computer through a CAN communication circuit, is connected with a contactor control coil and an auxiliary coil through a switching signal processing circuit, is connected with voltage and current sensors through an analog signal processing circuit, controls the on-off of an IGBT in the main circuit through an IGBT driving module, and achieves the required load simulation and energy feedback functions. The DC feedback type DC electronic load allows tested energy to be recycled, saves a series of conversion links such as rectification and inversion when compared with a method of feeding the energy back to an AC power grid, makes the control method simpler, and reduces cost.

Abstract: The utility model discloses a control circuit, LED driver chip and LED constant current drive control circuit, control circuit includes: high -frequency oscillating circuits, peak current detection circuit, filter circuit, error comparison circuit, logic control circuit and power tube, high -frequency oscillating circuits is used for clocking, the peak current detection circuit is used for detection and control to flow through the peak current of power tube, reaches when predetermineeing peak current as the peak current who flows through the power tube, and output overflows control signal, filter circuit is used for measuring current to detect the voltage of resistance to produce a voltage average value signal, error comparison circuit is used for receiving the produced voltage average value signal of filter circuit to carry out the comparison with built -in level reference signal, and output average value control signal, logic control circuit is used for receiving clock signal, overflows control signal and average value control signal to output manages control signal, with the switching on or turn -off of control power pipe, and then makes to reach with the electric external load's who is connected of control circuit electric current and predetermines the target electric current.

Abstract: The invention discloses a computer temperature switching control method A specific implementation process of the method comprises the steps of first configuring an external temperature sensor for a board card of a server or a computer, performing communication with a logic control chip of the board card through an I2C bus of the temperature sensor before startup, then judging data acquired by the logic control chip, and controlling whether a fan is rotated or not, thereby realizing temperature control; and implementing switching between the fan and the control bus through a bus changeover switch after a BMC or an EC is initialized, and enabling the BMC or the EC to take charge of the switching operation, thereby realizing temperature control of the whole working process Compared with the prior art, the computer temperature switching control method has the advantages that the temperature control of a mainboard in the whole working process can be realized, so that the board card can work at the low temperature and is ensured to normally work in a startup state; and the method is high in practicality, wide in application range and easy to popularize

Abstract: The invention relates to a high-precision time measurement and control system for a ranging field and belongs to the technical field of precision measurement of time. According to the high-precision time measurement and control system, the problems of huge volume and poor measurement universality of high-precision time interval measurement equipment are solved. A coded disc pulse measurement module is used for sampling the number of pulses of a grating encoder; a motor control module is used for regulating the angular position of a motor according to the number of pulses obtained by the coded disc pulse measurement module so as to regulate the emitting angle of a laser emitter; a time sequence generation module is used for generating a delay pulse to trigger the starting of a laser receiver under the control of a logic control module; a time interval measurement module is used for measuring an time interval from a time period when an external trigger signal of the laser emitter is detected to a time period when the laser receiver is started under the control of the logic control module; and a GPS time service module is used for adding a time label to each group of corresponding measurement data by virtue of satellite time service under the control of the logic control module. The high-precision time measurement and control system is applied to high-precision time measurement and control.

Abstract: The invention discloses a semi-physical simulation system used for debugging a nuclear power unit control system and a method, and relates to the field of nuclear power units. A pump valve simulation device and a phase sequence detection and relay cabinet of the semi-physical simulation system are connected with a signal input cabinet. The signal input cabinet, a signal output cabinet and a test control console perform Ethernet communication through a network switch. The method for debugging the nuclear power unit control system by the adoption of the semi-physical simulation system includes the steps that the semi-physical simulation system is connected with the nuclear power unit control system to form a loop; a simulation computer of the semi-physical simulation system is simulated into a nuclear power unit, and a signal source of the nuclear power unit control system is tested; according to user requirements, the operation function of the nuclear power unit control system is tested. The closed-loop debugging method is utilized for debugging the logic control function and progress control function of the nuclear power unit control system.

Abstract: The utility model discloses a luminance constant current control ware that LED stroboscopic is adjustable, including power management circuit, and respectively with power management circuit connection's master control circuit, trigger that the input triggers logic control circuit, encoder circuit, display driver circuit, triggers camera output circuit, remote communication circuit, output control circuit, constant current control circuit and AC -DC module, wherein, it triggers logic control circuit, encoder circuit, display driver circuit, triggers camera output circuit, remote communication circuit, output control circuit and constant current control circuit and all be connected with master control circuit to trigger the input, output control circuit and constant current control circuit are connected to the light source load respectively. This luminance constant current control ware that LED stroboscopic is adjustable has the stroboscopic characteristic when keeping light source luminance stable.

Abstract: The invention relates to a direct current control protection platform case monitoring and control device. The direct current control protection platform case monitoring and control device comprises a signal logic control module and a state output module; the signal logic control module is provided with a power source signal input end, a power source control signal output end, a backplane signal input end, a backplane control signal output end, an over-voltage and under-voltage protection signal input end and a fan signal input end; the logic control module includes a redundant power source electrification and de-electrification management logic unit, an over-voltage and under-voltage protection control logic unit, a fan protection control logic unit and a state output logic unit, wherein the state output logic unit is used for performing state judgment according to redundant power source information, backplane bus information and fan rotation speed information and outputting state judgment information through the state output module. With the direct current control protection platform case monitoring and control device adopted, safety detection can be performed on a case comprehensively, and the situation of case operation faults which is caused by the missing of one part of fault detection can be prevented, and damage to the case and other equipment can be further prevented.