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Sliding mode controller of hydraulic generator regulating system based on the input/output feedback linearization method

机译:基于输入/输出反馈线性化方法的水轮发电机调节系统滑模控制器

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An input/output feedback linearization method based sliding mode control strategy is proposed for the hydraulic generator regulating system (HGRS) with external disturbance and system uncertainties to enhance its response. Based on the input/output feedback linearization method, the relationship between reference output and control output is established. Then a sliding mode controller is designed to reject the influence of external disturbance and system uncertainties on the system performance and compelled the current dynamic output exponentially stabilized at their reference states. In order to eliminate the inherent harmful chattering phenomenon of sliding mode controller, a high-slope saturation function is used to replace the discontinuous sign function in the sliding mode manifold design. Several simulations with respect to the dynamic analysis of HGRS system without controller, fixed point stabilization, periodic orbit tracking and robustness test against random noises have been carried out to test the effectiveness of the proposed controller technique. The results show that the proposed sliding mode controller improves the nonlinear HGRS system performance with an accurate precision and a shorter time in all cases.
机译:针对具有外部干扰和系统不确定性的水力发电机调节系统,提出了一种基于输入/输出反馈线性化的滑模控制策略,以提高系统的响应性。基于输入/输出反馈线性化方法,建立参考输出与控制输出之间的关系。然后设计了一种滑模控制器,以消除外部干扰和系统不确定性对系统性能的影响,并迫使电流动态输出呈指数稳定在其参考状态。为了消除滑模控制器固有的有害颤振现象,在滑模歧管设计中使用高斜率饱和函数代替不连续符号函数。针对不带控制器的HGRS系统进行动态分析,定点稳定,周期性轨道跟踪以及针对随机噪声的鲁棒性测试,已经进行了一些模拟,以测试所提出的控制器技术的有效性。结果表明,所提出的滑模控制器在所有情况下均以精确的精度和较短的时间改善了非线性HGRS系统的性能。

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