The invention relates to a strain type multidirectional force transducer with a self-decoupling function, wherein the strain type multidirectional force transducer belongs to the field of a load sensor. The strain type multidirectional force transducer comprises a four-column type structure, a strain gauge and a compensating gauge. The four-column type structure has a structure in which four columns are placed between an upper disc and a lower disc, and the four columns are arranged in a manner that two random columns are in symmetry with the other two columns. The strain gauge and the compensating gauge abut against the columns. The manufactured device is sealed in a sleeve, and air in the sleeve is replaced by insert gas, thereby ensuring no moisture absorption or moistening and preventing long-term stability reduction of the device. According to the strain type multidirectional force transducer, the four-column type symmetrical structure and bridging signal separation technology are utilized so that the sensor has high self-decoupling performance, thereby realizing simultaneous measurement for aeroengine thrust vectors, namely three force amplitude components and three moments, supplying more reliable and comprehensive technological data support for a vector thrust engine testing experiment, realizing higher reliability in an engine thrust measurement method, and obtaining higher accuracy of the measured data.

Strain type multidirectional force transducer with self-decoupling function

The invention discloses a micro-force spiral measuring device and system; the device comprises a handle, a strain type torque measuring sensor, a piezoelectric force cell sensor, and a tool head; thebottom of the handle is connected with the strain type torque measuring sensor; the bottom of the strain type torque measuring sensor is connected with the top of the piezoelectric force cell sensor;the tool head is fixed on the piezoelectric force cell sensor via a jackscrew. The device can measure a micro-force spiral, can ensure a high intensity, is high in measuring resolution, and good in dynamic performance.

Micro-force spiral measuring device and system

The invention provides a torque measuring device. The torque measuring device comprises a cylinder body, a plurality of grooves, a plurality of strain gauges arranged in correspondence to the groovesand a circuit board connected with the plurality of strain gauges. One end of the cylinder body is the torque input end, and the other end of the cylinder body is the torque output end; the pluralityof grooves are formed in the inner side wall surface and/or the outer side wall surface of the cylinder body; and the plurality of strain gauges are arranged on the side walls of the cylinder body, corresponding to the plurality of grooves. According to the scheme, by forming the grooves in the cylinder body, the thickness of the cylinder body at the grooves can be reduced, and under the action ofthe same torque, the cylinder body can generate larger deformation at the grooves, so that the strain gauges can detect larger deformation and the sensitivity of the torque measuring device can be improved. Moreover, the thickness of other parts of the cylinder body can still be relatively large while the partial wall thickness of the cylinder body is reduced, so that the rigidity of the cylinderbody can be ensured and the torque measuring device can achieve the high sensitivity and the high rigidity at the same time. The structure of the cylinder body can further improve the rigidity of thecylinder body, so that parts can be more conveniently arranged in the cylinder body.

Torque measuring device

The invention discloses a space station solar wing simulated load test system The space station solar wing simulated load test system comprises a driving locking module, a switching locking module and a display module, wherein an input end of the driving locking module is connected with a first output end of a driving controller; a first output end of the driving locking module is connected witha first input end of the driving controller; the driving locking module tests a driving locking control function and feeds back a result to the driving controller; an input end of the switching locking module is connected with a second output end of the driving controller; a first output end of the switching locking module is connected with a second input end of the driving controller; the switching locking module tests a switching locking control function and feeds back a result to the driving controller; and the display module is respectively connected with a second output end of the drivinglocking module and a second output end of the switching locking module, and monitors a first test result and a second test result According to the space station solar wing simulated load test system, problems of difficulty and single-flow test of a space station solar wing simulated load test technology are solved, two flow tests of driving locking control and switching locking control are combined, the easy operation of the space station solar wing ground simulated load test is implemented, and test efficiency is improved

Space station solar wing simulated load test system

The present invention is to provide a robot joint unit which can measure a torque applied to a robot joint by a reaction method, reduce a mutual interference phenomenon occurring in a joint torque sensor due to vibration of a reducer, and increase a torque measurement accuracy of a joint, and a joint torque sensor provided in the same A robot joint unit according to the present invention comprises: a base part; a driving part which includes a stator supported by the base part and a rotor rotatably supported by the stator and thus provides an input torque; a reducer which receives an input torque from the driving part and reduces speed to generate a driving torque; an output link which receives the driving torque from the reducer and rotates; and a joint torque sensor which is arranged on the base part to sense a reaction torque applied to the reducer from the output link, and supports the stator

Joint torque sensor and robot joint unit including same

The invention provides a high-precision strain type torque sensor which comprises two changeover plates (1), four strain columns (2), strain pieces (3), a dynamic strain meter (4) and a data acquisition and processing system (5). The four strain columns (2) and the upper and the lower changeover plates (1) are fixed. The strain columns (2) are of square column structures, each strain column is provided with two semi-circular grooves, the strain pieces (3) are pasted on the backs, above the semi-circular grooves, of the two symmetrical strain columns (2), and the four strain pieces (3) are pasted totally. In the testing process, one changeover plate (1) is fixed, a vibration source is arranged in the center of the other changeover plate (1), and four kinds of strain generated by the four strain pieces (2) form a full-bridge. The dynamic strain meter (4) converts the strain generated by the strain pieces (3) into dynamic voltage signals. The data acquisition and processing system (5) collects the dynamic voltage signals, and torque is obtained according to the dynamic voltage signals.

High-precision strain type torque sensor

The invention discloses an SADA micro vibration testing method. An air floating table is used for barometric support to overcome the influence of the ground gravity on an SADA, a measuring device is separated from a measured piece during test, and it is not required to mount additional equipment and sensors on the measured piece, thereby not influencing dynamic features of the measured piece, not damaging the structure of the measured piece, and ensuring the safety of the measured piece. Eight common piezoelectric sensors are reasonably arranged, so that micro-disturbance signals in six freedom degrees can be measured by the prior unidirectional piezoelectric sensors, thereby overcoming the problem of lack of high-precision tri-directional sensors, and greatly improving the measurement precision. A disturbance source can be arranged inside or outside a measuring system, so that the adaptability of the measuring system can be improved.

SADA (Solar Array Drive Assembly) micro vibration testing method

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High-precision strain type torque sensor

SADA (Solar Array Drive Assembly) micro vibration testing method