自适应变结构的PI控制器设计  

Design and Research of Adaptive Variable Structure PI Controller

作　　者：王皓天[1] WANG Haotian(College of Mechanical,Electrical and Information Engineering,Shaanxi Energy Institute,Xianyang 712000)

机构地区：[1]陕西能源职业技术学院机电与信息工程学院,陕西咸阳712000

出　　处：《微型电脑应用》2021年第7期163-165,共3页Microcomputer Applications

摘　　要：针对IP控制系统对连续变化的输入信号响应性能差的缺点,设计了一种自适应变结构PI控制器。首先阐述了传统IP控制器所具有的性能缺陷,在此基础上,构建了变结构PI控制器的结构。最后对系统的响应及抗干扰特性实施了仿真:当输入阶跃信号时,VSPI和IP控制系统的控制效果一致,相较于PI控制系统,不仅转速无超调而且响应的平稳性也更好。当输入连续正弦信号时,VSPI和PI几乎能够无误差跟踪输入信号变化,控制效果明显优于IP控制。系统的抗干扰性能与带宽ω_n取值成反比,而与控制方式无关。A variable structure PI controller was designed to improve the performance of IP control system.Firstly,the control performance defects of traditional IP controller were analyzed,and then the structure of variable structure PI controller was built.Finally,the simulation results show that the VSPI and IP control systems have the same control effect when the step signal is input.Compared with PI control system,the VSPI and IP control systems not only have no overshoot but also have better response stability.When the input is a continuous sinusoidal signal,VSPI and PI can track the input signal almost without error,and the control effect is significantly superior to IP control.The anti-jamming performance of the system is inversely proportional to the bandwidth value,but has nothing to do with the control mode.

关 键 词：变结构 PI控制器 IP控制器 仿真 

分 类 号：TN830[电子电信—信息与通信工程] TM46[电气工程—电器]