关键词: PID控制器, 闭环增益成形, 鲁棒控制, 一阶对象, 连续搅拌反应釜

Abstract: To solve the control problem of Continuous-Stirred-Tank-Reactor (CSTR), a straightforward PID design based on closed-loop gain shaping algorithm was proposed in this paper to enhance the simplicity and robustness of PID controller. Firstly, the transfer function of the anticipant closed-loop control system was assumed as a 1st order system, and the actual closed-loop transfer function was consisted of the 1st order transfer function and PID controller. Then, the anticipated closedloop transfer function was compared with that of the actual closedloop, thus the PID controller coefficients could be calculated. Finally, the robust PID controller was designed in a CSTR system. The simulation results demonstrate that the PID controller has better robust stability and dynamic performance.

Key words: PID controller, closed-loop gain shaping, robust control, 1st order plant, Continuous-Stirred-Tank-Reactor (CSTR)