摘要
分析永磁直线同步电机的数学模型。针对永磁同步直线电机(PMSLM)强耦合、非线性的特点,把整数阶PID控制扩展到分数阶,用Oustaloup递推算法对分数阶微分算子sv进行拟合,用分数阶PIλDμ控制代替常规PID控制并与模糊控制相结合,提出一种模糊自适应分数阶PIλDμ控制器,利用模糊逻辑实现分数阶PIλDμ控制参数的在线调整。并对该控制算法进行仿真研究,仿真结果表明:该控制算法具有较好的动态稳定性和跟踪性能,对外界干扰具有较强的鲁棒性。
The mathematical model of permanent magnet linear synchronous motor was analyzed. For the strong coupling, non- linear characteristics of permanent magnet synchronous linear motor （ PMSLM）, the Oustaloup recursive algorithm was used to fit the fractional differential operator s. The fractionalPIλDμ controller was used to instead of the conventional PID controller. Combining fuzzy controller with fractional PIλDμ controller, a fuzzy adaptive fractional PIλDμ controller was designed, using fuzzy logic to adjustment the control parameters of fractional order PIλDμcontroller online. The control algorithm was simulated. The simulation results show that comparing with the traditional PID controller, this control algorithm has better dynamic stability, better tracking performance and better robustness with external disturbances.
出处
《机床与液压》
北大核心
2012年第13期106-109,共4页
Machine Tool & Hydraulics
关键词
永磁直线同步电机
模糊自适应控制
分数阶微积分
分数阶PIλDμ控制
Permanent magnet linear synchronous motor
Fuzzy adaptive control
Fractional order calculus
Fractional orderPIλDμ controllers
