基于有限字长考虑的采样系统最优控制器实现(英文)

The Optimal Controller Realization of Sampled Data Systems with Finite Word Length Consideration

提出了有限字长约束下采样控制器最优实现的新的有效算法 :将最优实现问题演化为非线性规划问题 ,从而可以利用现有的优化技术来求解 .理论推导和数值实例表明 :该算法计算简便 ,所得的最优实现结果较已有研究结果有更大的稳定界和更短的稳定字长 .

This paper presents a new effective algorithm for the optimal realization of sampled-data controller structures subject to finite word length (FWL) constraints. The problem is formulated as a nonlinear programming to provide an easy and efficient optimization tool to solve such complex problem. Simulation results of the optimum realization of digital controller structure are presented to illustrate the effectiveness of the proposed strategy. The results of the new algorithm provide an efficient computational method with larger stability bounds and minimum bit-lengths of the controller realization, if compared to earlier measures.