未知负载随机噪声化的BUCK最优控制器  

Optimal Controller of a BUCK DC/DC Converter Regarding Uncertain Load as Stochastic Noise

作　　者：邹利平[1] 杨向宇[1] 杨进[1] 

机构地区：[1]华南理工大学电力学院雅达实验室,广东广州510640

出　　处：《通信电源技术》2005年第6期24-27,共4页Telecom Power Technology

摘　　要：叙述了BUCK变化器最优化设计方法。BUCK变换器被当作一个不确定负载随机噪声系统。首先,暂时假定随机噪声系统是完整的状态系统,得到稳态时噪声最优状态反馈控制规律。其次,最优状态反馈控制变换为等价的误差驱动控制系统,然后利用相位超前/滞后控制方法实现最优控制规律。This paper presents an optimal design approach for the pulse width modulation switc- hing control of a buck DC-DC converter by modeling the converter as a stochastic linear system with noise of uncertain load. Firstly, we temporarily assume that the stochastic system is available with complete state, and then derive an optimal state feedback control for the optimal noise regulation in steady state. Secondly, from the stead state viewpoint, the optimal state feedback control is transferred into an equivalent error driven servo controller, and then the designed optimal control law is implemented using a phase lead-lag controller.

关 键 词：脉宽调制 最优控制 随机线性系统 BUCK变换器 

分 类 号：TM571.6[电气工程—电器]