Camacho Oscar, De la Cruz Francisco
Postgrado en Automatización e Instrumentación, Grupo en Nuevas Estrategias de Control Aplicado, Universidad de los Andes, Mérida 5101, Venezuela.
ISA Trans. 2004 Apr;43(2):257-70. doi: 10.1016/s0019-0578(07)60035-4.
An approach to control integrating processes with elevated deadtime using a Smith predictor sliding mode controller is presented. A PID sliding surface and an integrating first-order plus deadtime model have been used to synthesize the controller. Since the performance of existing controllers with a Smith predictor decrease in the presence of modeling errors, this paper presents a simple approach to combining the Smith predictor with the sliding mode concept, which is a proven, simple, and robust procedure. The proposed scheme has a set of tuning equations as a function of the characteristic parameters of the model. For implementation of our proposed approach, computer based industrial controllers that execute PID algorithms can be used. The performance and robustness of the proposed controller are compared with the Matausek-Micić scheme for linear systems using simulations.
提出了一种使用史密斯预估器滑模控制器来控制具有大时滞的积分过程的方法。采用了PID滑模面和积分一阶加时滞模型来合成控制器。由于存在建模误差时，现有的带史密斯预估器的控制器性能会下降，本文提出了一种将史密斯预估器与滑模概念相结合的简单方法，这是一种经过验证的、简单且鲁棒的方法。所提出的方案有一组作为模型特征参数函数的整定方程。为了实现我们提出的方法，可以使用执行PID算法的基于计算机的工业控制器。通过仿真将所提出控制器的性能和鲁棒性与线性系统的马陶塞克-米西奇方案进行了比较。
