基于H_∞控制理论混凝土约束收缩控制器设计

Design the Concrete Restraint Contraction Controller Based on H_∞ Control Theory

介绍H∞控制理论以及基本算法,对混凝土约束收缩系统进行建模,进而设计了基于H∞控制理论的控制器。模拟仿真表明H∞控制能加快系统的响应时间,改善系统性能,对外界干扰以及模型的不确定性具有鲁棒性。最后,通过对混凝土约束收缩过程中所采集的位移和力的数据分析,说明了H∞控制器能更好地抑制外界波动的影响,实现了混凝土来回约束收缩10μm的高精度控制要求,从而验证了此H∞控制器的可靠性。

The H∞ control theory and its prima algorithm are introduced with the module of the concrete restraint contraction system; the controller is designed based on the H∞ control theory. The analog simulation result indicated that H∞ control can fasten the respond of the system, and further more optimize its performance, and the system can represent robustness to the external interference and the uncertainty of model. Finally, by analyzing the data of displacement and force gathered from the concrete restraint contraction process, we can conclude that, with the H~ controller, the influence from the outside fluctuation can be suppressed, the high accuracy control re- quest of the concrete restrain to contract 10um back and forth can be realized. So the reliability of the H∞ controller was confirmed.