5 Papers
4 Citations
Yuan Liu is an academic researcher from Northwestern Polytechnical University. The author has contributed to research in topics: Aerodynamic force & Convergence (economics). The author has an hindex of 1, co-authored 1 publications.
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Papers
Combining modified inverted generational distance indicator with reference-vector-guided selection for many-objective optimization
TL;DR: A two-stage selection mechanism uses the IGD^+ indicator and the reference vector guidance method to select two sub-populations, which form the parent population at the next generation when solving MaOPs.
6
Improved digital model of parafoil-unmanned aerial vehicle accurate recycling system
Mingjun Li,Jianguo Yan,Yuan Liu +2 more
- 01 Aug 2016
TL;DR: In this paper, the authors presented an improved method to build the digital model: the method to calculating the apparent mass and rotational inertial of the parafoil; based on the CFD method, aerodynamic coefficients of specified parafOIL can be obtained by aerodynamic performance tests; using infinitesimal method to calculate the aerodynamic forces and moment of the canopy accurately; and the forces analysis is conducted to the overall system first and then to the single block, and according to kinematic equations, the 9-DOF digital model is established in Matlab
5
Design of Virtual While-drilling Attitude Sensors
Xu Guang Ding,X. Wang,Fei Li,Yuan Liu,Guanghui Zhang,Ge Lei +5 more
- 08 Jul 2022
TL;DR: This paper studies the virtual while-drilling attitude sensor based on SP6000, which compiles and downloads the simulation model into the hardware-in-loop simulation box, and outputs attitude signals to the main controller in real-time.
Downlink Command Simulator based on Simulink for Rotary Steerable System
Fei Li,Yuan Liu,Yu Ning mei,X. Wang,Yifan Wang,Yuqi Tan +5 more
- 08 Jul 2022
TL;DR: It can be concluded that the correlation between the input and output of the simulator is about 98%, which verifies the effectiveness of the Simulink model and the reliability of the downlink command simulator.
Study of Drilling Parameter Effects on Downlink Command Signal Transmission using the DOE Method
TL;DR: In this article , the effect of drilling parameters on downlink command transmission, shorten the drilling cycle, and improve the drilling efficiency was investigated by building a simulation model in Simulink to simulate the actual transmission process of the downlink signal.