利用滤波器解决了前馈控制的物理不可实现问题。
By using a filter the physically unrealizable problem of the feedforward control is realized.
在并联型有源滤波器的控制过程中，前馈控制能够快速跟踪负荷波动，但需要精确的模型和参数。
For the control of shunt APF (Active Power Filter), feedforward is an effective way to track the load variation, but accurate models and parameters are demanded.
并采用一种前馈型的时滞滤波器技术，对加速度控制信号进行滤波来有效地控制抓斗的摆角。
A time delay filter technique is applied to shape the acceleration control signal, thus prevents the swing grab.
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