说明：  先进PID方针，包含各种PID，普通PID,抗积分饱和PID,微分先行PID控制算法,梯形积分PID，积分分离PID算法，变速积分，不完全微分PID控制算法，带死区的PID控制，步进PID控制的MATLAB仿真
(Advanced PID policy, contain a variety of PID, ordinary PID, PID integral saturation resistance, differential PID control algorithm, first trapezoidal integral PID and integral separation PID algorithm and variable integral, incomplete differential PID control algorithm, with the PID control of dead area, step into the MATLAB simulation of PID control)