永磁同步电机伺服系统模糊分数阶滑模控制

针对传统整数阶滑模控制系统中的抖震问题,结合分数阶理论、模糊逻辑推理和滑模控制技术的优点,提出了模糊分数阶滑模控制策略.将传统滑模控制器中的整数阶切换面推广到分数阶并设计了全控制域滑模面,保证系统在整个控制域都具有较强的鲁棒性.采用模糊逻辑推理算法,实现了开关切换增益的自整定.仿真和实验验证了模糊分数阶滑模控制系统不但能有效地削减抖震,而且能保持滑模控制器对系统外部扰动的全局鲁棒性.

Fractional order fuzzy sliding mode control for permanent magnetsynchronous motor servo drive

A scheme of fractional order sliding mode controller based on fuzzy logic algorithm is proposed for dealing
with the chattering phenomenon existing in conventional integral order sliding mode controller. The fractional order sliding
mode surface covers the whole control domain so that the system is robust with disturbances all over the control domain.
In order to deal with the upper bound of uncertainties, fuzzy logic inference algorithm is used to obtain the gain of softswitching.
Simulations and experiments demonstrate that the proposed fractional order sliding mode controller not only
achieves favorable control performances, but also is robust with regard to external disturbances.