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采样控制系统中离散信号与连续信号共存 ,如何在不丢失系统在采样时刻之间信息的前提下 ,并同时考虑被控对象的不确定性 ,实现采样控制系统的设计成为采样控制系统设计的难点 .针对这一问题 ,基于时域提升技术 ,研究采样控制系统混合灵敏度设计方法 .首先对采样控制系统混合灵敏度问题进行描述 ,然后分析了采样周期 ,低通滤波器及加权函数的选择原则 ,并给出了采样控制系统混合灵敏度问题的计算方法 .最后 ,结合某电动仿真转台位置伺服回路的设计问题 ,与传统设计方法进行了比较 ,从而验证了方法的有效性
In the sampling control system, the discrete signal and the continuous signal coexist. How to realize the design of the sampling control system becomes the difficult point of the design of the sampling control system without losing the information between the sampling time and taking into account the uncertainty of the controlled object In order to solve this problem, the hybrid sensitivity design method of sampling control system is studied based on the time-domain lifting technique.First, the mixed sensitivity of sampling control system is described, and then the selection principles of sampling period, low-pass filter and weighting function are analyzed. The method of calculating the hybrid sensitivity of sampling control system is given.Finally, the design of position servo loop of a motorized simulation turntable is compared with the traditional design method to verify the effectiveness of the method