【作者】 李明大； 李东海； 王京；

【Author】 LI Ming-da~1,LI Dong-hai~2,WANG Jing~1 (1.Metallurgical Engineering Research Institute,University of Science and Technology Beijing,Beijing, 100083,China; 2.State Key Lab of Power Systems,Dept of Thermal Engineering,Tsinghua University,Beijing 100084, China)

【机构】 北京科技大学冶金工程研究院； 电力系统与发电设备控制与仿真国家重点实验室清华大学热能系；

【摘要】 PID控制器具有结构简单、稳定性好、可靠性高和易于现场调试等优点,被广泛应用于工业控制过程。著名的幅值相位裕度法(GPM)以期望的幅相裕度设计控制器,频域指标直观,较其它经典PID整定方法性能鲁棒性强。采用二自由度结构的预期动态法(DDE)可在未知对象模型的条件下设计满足预期调节时间的控制器,并且其参数选取具有一定物理意义。针对4类典型对象,分别以DDE法和GPM法设计PID控制器,采用蒙特卡罗实验的方法检验系统时域和频域的性能鲁棒性,仿真结果表明DDE法的性能鲁棒性占优,不依赖于精确对象模型,整定方法简单。更多还原

【Abstract】 The PID controller is widely used on industry control process with simple structure,good stableness and reliability and convenient local debugging.The famous gain and phase margin method(GPM) designs control base on desired gain and phase margin,frequency index is visual and the performance robustness is better than other classical PID tuning method.The desired dynamic equation method(DDE) which adopt two degree-of-freedom structure can design controller which satisfy desired setting time for unknown model,its parameter selection also has certain physical meaning.The DDE and GPM method are used to tune PID controller parameters respectively for four classical plants.The Monte-Carlo simulation is adopted to test performance robustness. Simulation results show that the DDE has obviously better performance robustness, independent of exact plant model,and simple tuning method.更多还原