从参考模型取状态的离散MRAC系统的简便算法

• 作 者: 吴学礼
• 机 构: 河北机电学院自动化系 石家庄050054
• 出 处: 控制与决策
• 发表日期: 1991年04期
• 关键词: 非最小相位系统 参考模型 MRAC 相对阶 简便算法 全局收敛性 被控对象 稳定多项式 控制器结构 设计方法

本文改进了文[1]的离散MRAC系统简便算法,提出的新算法不仅去掉了关于被控对象增益参数b_0的限制条件,而且适用于非最小相位系统,具有简单、易于实现和应用范围广泛等特点。文中采用从参考模型取状态的MRAC技术,因而增强了系统抗噪声能力。并且将文[2,3]的设计方法从相对阶数1≤d≤2且仅适用于最小相位系统的连续情况,推广到相对阶数d≥1的离散情况。仿其结果表明新算法具有良好的控制性能。

In this paper, a simple and convenient algorithm of discrete MRAC system is improved. The proposed algorithm not only removes the constraint of gain parameter b_0 but also applies to non-minimum phase system, which is simple, easy to implement and has wide range of applications Features. In this paper, the MRAC technique of taking the state from the reference model is adopted, thus enhancing the anti-noise ability of the system. And the generalized method of [2, 3] is extended from the continuous case of relative order 1≤d≤2 and only to the minimum phase system to the discrete case with relative order d≥1. Simulation results show that the new algorithm has good control performance.