【摘要】 针对电液负载模拟器加载系统中存在的不确定性因素,通过选择适当的权函数,采用混合灵敏度的H∞方法设计并用基于线性矩阵不等式的算法求解鲁棒控制器。实验验证了该控制器在弹簧刚度发生变化时具有鲁棒性,并且结合结构不变性原理能有效抑制多余力,提高被动加载的性能。更多还原

【Abstract】 Aiming at uncertainty in loading system of electrohydraulic load simulator,robust controller was designed by mixed sensitivity H∞ approach through choosing suitable weighted functions,and was solved through linear matrix inequality algorithm.It’s testified by experiments that robust controller has robustness when spring stiffness changes.It can eliminate superfluous force and improve passive loading performance with compensation of structure invariance principle.更多还原