发动机主动悬置3种控制方法的比较

应用LMS自适应前馈控制、LQR控制和模糊PID控制3种方法对发动机电磁式主动悬置进行研究。在MATLAB/Simulink环境下建立了主动悬置控制系统模型,并以车身垂向加速度为性能指标进行了仿真分析,对比了采用上述3种控制方法时主动悬置的隔振能力、鲁棒性和稳定性。仿真结果表明,在主动悬置的控制上模糊PID控制方法优于其他两种控制方法。

Using Adaptive Gain Scheduling LQR Method Control of Arm Driven Inverted Pendulum System Based on PIC18F4431

The arm driven inverted pendulum system is a highly nonlinear model, muhivariable and absolutely unstable dynamic system so it is very difficult to obtain exact mathematical model and balance the inverted pendulum with variable position of the ann. To solve this problem, this paper presents a mathematical model for arm driven inverted pendulum in mid-position configuration and an adaptive gain scheduling linear quadratic regulator control method for the stabilizing the inverted pendulum. The proposed controllers for arm driven inverted pendulum are simulated using MATLAB-SIMULINK and implemented on an experiment system using PIC 18F4431 mieroeontroller. The result of experiment system shows the control performance to be very good in a wide range stabilization of the arm position.

倒立摆控制的无扰切换

针对倒立摆控制问题,改进了Fantoni和Lozano所设计的控制方法,提出一种近似实现控制器无扰切换条件。建立两个切换控制器的控制量等式,在最高点邻域采用Taylor展开方法求解这个非线性方程,得到一个近似无扰切换点集,根据倒立摆的物理模型特点,在这个集合中选择一个切换点,并在它附近取一个区间作为控制器切换的条件。采用倒立摆的位移、平移速度、角度、角速度作为调度变量,根据这些量和切换条件选择控制器参数。仿真结果说明:这种方法基本实现控制器的无扰切换。