摘要
为了研究单Buck型逆变器非线性系统的二次型最优控制方法,提出一种状态反馈精确线性化和二次型相结合的最优控制方法;建立以状态空间平均法的单Buck型逆变器系统动态模型,采用状态反馈精确线性化方法,并给出状态反馈表达式,实现逆变器系统线性化;依据无源性控制思想,给出二次型最优控制控制器的分析与设计和无源性能量函数对优化Q和R取值方法;仿真和实验结果验证了其控制方法的正确性,同时表明该线性化控制策略系统稳定,输出电压畸变小,具有良好稳态与动态性能和强鲁棒性;线性化使其控制系统结构简单,成本低,易于实现。
In order to study optimum control method of quadratic form on single Buck inverter,the optimal control method of state feedback exact linearization was presented,the dynamic system model of single Buck inverter with state space averaging method was established,the state feedback expressions was given with the state feedback linearization control theory,and the inverter system linearization was realized; Basing on passive control theory,analysis and design of quadratic form optimal controller and passive energy function for the optimization of Q and R value were given; Simulation and experimental results verify the correctness of the control method,and show that the linearization control system stability,output voltage distortion is small,has good steady state and dynamic performance and strong robustness; Because of linearization of nonlinear system,the control system has simple structure,low cost,and it is easy to realize.
出处
《电机与控制学报》
EI
CSCD
北大核心
2014年第8期75-80,共6页
Electric Machines and Control
基金
广东省自然科学基金(05006521)
关键词
BUCK逆变器
最优控制
无源性控制
状态反馈线性化
李导数
buck inverter
optimal control
passivity-based control
state feedback linearization
lie derivative
