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为改善潮汐模拟系统的动态和静态性能,需要建立精确的动态模型,并确定合理的控制策略.文中以水位和流量为被控变量,详细研究潮汐模拟系统的建模与自适应控制原理和应用,设计一种加权最小方差自校正调节器实现潮汐模拟系统的高精度控制.提出适用于潮汐模拟系统的时变参数估计方法以提高估计精度,引入“遗忘因子”避免数据饱和现象,提高系统的鲁性.仿真实验和实际应用都证实,新控制方案是成功的.
To improve the dynamic and static performance of the tidal simulation system, it is necessary to establish an accurate dynamic model and determine a reasonable control strategy. In this paper, the water level and the flow rate are controlled variables. The principle and application of modeling and adaptive control of tidal simulation system are studied in detail. A weighted minimum variance self-tuning regulator is designed to realize high-precision control of tidal simulation system. A time-varying parameter estimation method suitable for tidal simulation system is proposed to improve the estimation accuracy. The “forgetting factor” is introduced to avoid data saturation and improve the system’s robustness. Simulation experiments and practical applications have confirmed that the new control scheme is successful.