摘要
感应电动机是一个高阶、非线性、强耦合的多变量系统,在运行的过程中参数易受温度、负载变化的影响,会造成电动机进入不稳定区域运行。为了适应系统的非线性特性,提出了一种基于滑模变结构的控制策略。该策略对电流、转速、磁链误差分别建立滑模面,构造出各环节变结构控制器,并推导出自适应控制律。仿真结果证明了控制策略的有效性和可行性。
Induction motor is a high-level,non-linear,strong coupled and multi-variable system.When it＇s running,its parameters are influenced by temperature and load and caused the motor to run into unstable region.To adapt to its non-linear system property,a control strategy based on sliding mode variable structure was proposed.Sliding surface was established corresponding to current,rotate speed,flux error,variable structure controller of each link was constructed,and self-adaptive control law was derived.The simulation results showed that the control strategy has effectiveness and feasibility.
出处
《工矿自动化》
2011年第12期52-55,共4页
Journal Of Mine Automation
关键词
感应电动机
滑模变结构
变结构控制器
自适应控制律
鲁棒性
induction motor
sliding mode variable structure
variable structure controller
self-adaptive control law
robust
