基于MCS算法的自适应时滞补偿振动控制研究

由于Smith预估时滞补偿器对预估模型和预估时间有较高的要求,在预估模型和时间出现较大偏差时会引起时滞补偿的MCS算法出现控制效果下降甚至失稳的问题,因此,基于李雅普诺夫稳定性原理,设计一种自适应时滞补偿结构添加到时滞补偿MCS算法中,构建一种具有自适应时延补偿的MCS算法。选取悬臂梁结构为研究对象进行仿真分析,结果表明改进的MCS算法不仅克服了预估时间出现较大偏差时的失稳问题,而且具有较好的时滞补偿控制效果。

Research on adaptive time-delay compensator for active vibration control based on MCS algorithm

Smith predict time-delay compensator has high requirements for the prediction model and Sprediction time, so the control effect and stability based on Minimal control synthesis(MCS) algorithm including time compensator will decline when there is a larger deviation between prediction model and Sprediction time. A new MCS algorithm including adaptive time delay compensation automatically is designed by Lyapunov principle to overcome the problem. A cantilever beam structure is selected for simulating the new algorithm. The simulation results show that the new algorithm could overcome the stability problem during larger deviation and have good effect of delaying compensation control.