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Auto-tuning of Optimal PI Controller Satisfying Sensitivity Value Constrains

机译:最优PI控制器的自动调整满足灵敏度值约束

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For a first-order lag process with dead-time models (FOPDT) under step load disturbances, optimal parameters of proportional and integral (PI) controller are obtained through numerical optimization based on minimizing the integrated time and absolute error (ITAE), or maximizing the integral gain. The optimizations are under constrains of sensitivity functions. Then, the tuning formulas for PI controllers are adjusted according to parameters from numerical fittings of optimized values within a large scope of the ratio of the inertia time to the dead-time of processes. Finally, the process information is acquired from closed-loop tests of a two-channel relay and the process is approximately modeled with a FOPDT model in order to achieve parameter auto-tuning of controllers. The approach proposed is proved to be effective according to simulation results.
机译:对于在阶梯负荷干扰下的一阶滞后过程(FOPDT),通过基于最小化综合时间和绝对误差(ITAE),或最大化,通过数值优化获得比例和积分(PI)控制器的最佳参数。或最大化积分增益。优化是灵敏度函数的约束。然后,根据从惯性时间比率与过程的死区时间的大范围内的优化值的数值配件的参数来调整PI控制器的调整公式。最后,从两个通道继电器的闭环测试获取处理信息,并且该过程大致用FOPDT模型建模,以实现控制器的参数自动调整。提出的方法被证明根据模拟结果有效。

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