摘要
在工程中经常使用状态观测器来观测不可直接获取的状态量以实现系统的反馈或前馈控制。本文提出了用广义逆矩阵来设计离散型状态观测器,并建议了一种新的算法,即分离合并介耦算法来设计组合观测器。该法计算简单,便于实现。使用本算法对直流调速系统构成转速负载组合观测器,以实现转速反馈控制和扰动前馈补偿。实验证明该算法是合理可行的,系统性能得到明显地改善。
In enginneering practice state observers are usually used to ob-serve state variables to obtain feedback or forward control for systems while sta-te variables can not be taken directly.The generalized matrix inverse is introducedro calculate the discrete state observer in this paper.A novel method called sepa-tating-combining-decoupling method is proposed to design a composed observer.The method is simple and easy to implement.It is used to build a speed-distur-bance combined observer in d.c. speed-variable systems to obtain speed feedbackcontrol and disturbance forward compensation.The experience shows the presentedmethod is feasible and reasonable and system performance is greatly improve.
关键词
观测器
离散状态
算法
微机控制
observer
feed forward compensation
microcomputer control
d.c. variable speed system
