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利用卡尔曼滤波器对过程系统中一些随机状态和不可测的确定性干扰进行估计，使最优控制器能在此类随机系统中得到应用，获得较好的控制质量。
The Kalman filter is used to estimate some stochastic states and uncertain measurable disturbances in the process system, so that the optimal controller can be applied in such stochastic systems to obtain better control quality.