【摘要】 提出了一种新型抗饱和PI控制器的设计方法,通过引入反向计算系数减小了积分饱和对系统的影响,给出了新型抗饱和PI控制器的系统框图,并且证明了该算法的稳定性。为了提高异步电动机调速系统的动态性能,把这种抗积分饱和的PI控制器应用到了PWM逆变器供电的异步电动机矢量控制系统中。利用Matlab软件进行了仿真实验,仿真实验结果验证了这种算法的有效性,表明这种新型PI控制器可以有效地降低调速系统的超调量,缩短系统的稳定时间,同时还可以提高系统对负载扰动的鲁棒性。更多还原

【Abstract】 A novel antiwindup PI controller was presented. A back-calculation gain is used to reduce the integrator windup effect.The block diagram of the proposed antiwindup PI controller was presented, and the stability was proved. The novel antiwindup PI controller was used in the PWM inverter fed induction machine drive systems to improve the dynamic performances. The simulation experiments have been carried out using Matlab software. Simulation results show that the novel PI controller can reduce overshoot, shorten the settling time,and improve the robustness to load disturbances.更多还原