摘要
以在轨航天器的仪器仓平台设备系统为研究对象 ,提出了一种含结构刚度具有滞迟非线性特性的隔振系统和最优主动控制系统的一体化实时最优控制方法 .通过一个最优化过程实时最小化二次型性能指标获得时变的反馈增益矩阵 ,在非线性条件下 ,通过时间离散控制系统运动方程获得一个差分方程的集合 ,使得对控制系统的评估更简单更直接 .最后针对具体结构系统给出了仿真结果 ,并与单一主动、被动控制进行比较 ,以验证该方法的有效性 .
A modified instantaneous active control algorithm with nonlinear hysteretic isolaters for active control orbital structures is developed. The shift invariant feedback gain matrix is obtained through an optimization process such that a prescribed instantaneous quadratic performance index is minimized. In the presence of nonlinearities, the equation of motion of the discrete time control system remain a set of difference equations which makes the evaluation of the control system simple and straightforward. The feasibilty of the algorithm is verified numerically by the instrument equipment structure.
出处
《控制理论与应用》
EI
CAS
CSCD
北大核心
2000年第4期619-623,共5页
Control Theory & Applications
基金
国家自然科学基金!( 1963 2 0 0 1)
关键词
弹塑性滞迟非线性结构
时间离散系统
最优控制
nonlinear hysteretic structure system
instantaneous optimal control
time discrete system
integrated vibration control
