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针对船舶主动力装置中机炉协调系统中存在的多变量强耦合、非线性及大延迟等特点,提出了基于SVM逆辨识的复合控制策略,并应用于协调控制系统的仿真研究.该方法将直接逆模控制与模糊控制结合,既利用了支持向量机逆控制设计简单,稳态精度高的优点,同时结合模糊控制响应快速,抗干扰能力强,鲁棒性好的优势,使得支持向量机模型即使没有经过足够充分的训练,也能保证控制器从一个快速和稳定的初始状态开始控制.仿真结果表明,该SVM复合控制算法在控制品质上有很大的提高.在动态响应速度、静态稳定性、抑制大超调以及鲁棒性等方面都表现出了极好的性能。
Aiming at the characteristics of multi-variable strong coupling, nonlinearity and large delay in the machine-boiler coordination system in the ship’s main power plant, a hybrid control strategy based on SVM inverse identification is proposed and applied to the simulation research of coordinated control system. The combination of direct inverse mode control and fuzzy control not only makes use of the advantages of support vector machine inverse control, such as simple design and high steady precision, but also combines the advantages of fast response, strong anti-interference ability and good robustness of fuzzy control, The control of the controller from a fast and steady initial state can be guaranteed even if the model is not adequately trained.The simulation results show that the SVM has a great improvement in the control quality.In dynamic response speed, static Stability, inhibition of large overshoot and robustness and other aspects have shown excellent performance.