Control of suspended low-gravity simulation system based on self-adaptive fuzzy PID

2017 2nd International Seminar on Advances in Materials Science and Engineering

Chen, Zhigang^1 ; Qu, Jiangang^1

School of Mechanical and Electrical Engineering, Harbin Institute of Technology, Harbin

150001, China^1

关键词: Degree of accuracy;    Integral parameters;    Low gravity;    PID controllers;    Real time;    Self-Adaptive;    Self-adaptive fuzzy PID control;    Vertical motions;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/231/1/012070/pdf
DOI  :  10.1088/1757-899X/231/1/012070

来源: IOP

【 摘 要 】

In this paper, an active suspended low-gravity simulation system is proposed to follow the vertical motion of the spacecraft. Firstly, working principle and mathematical model of the low-gravity simulation system are shown. In order to establish the balance process and suppress the strong position interference of the system, the idea of self-adaptive fuzzy PID control strategy is proposed. It combines the PID controller with a fuzzy controll strategy, the control system can be automatically adjusted by changing the proportional parameter, integral parameter and differential parameter of the controller in real-time. At last, we use the Simulink tools to verify the performance of the controller. The results show that the system can reach balanced state quickly without overshoot and oscillation by the method of the self-adaptive fuzzy PID, and follow the speed of 3m/s, while simulation degree of accuracy of system can reach to 95.9% or more.