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本刊78年第三期《前馈调节系统应用专集》发表了“锅炉给水系统的前馈—反馈控制试验小结”一文,曾指出:“……前馈控制能克服假信号的作用,……改善了调节品质”(第80页左栏下)。实际上是得出了前馈控制作用能解决反馈控制无法克服的虚假信号造成误动作的结论,从而扩大了前馈控制的应用范围。然而对于在有虚假信号下,弄清如何正确应用不变性原理求取前馈补偿模型,是使用好前馈控制在这一类问题(即
The third issue of 78, “Feedforward Regulating System Application” published a “summary of Feedforward - Feed-Back Control Test of Boiler Feedwater System”. It pointed out: “... feedforward control can overcome the function of glitch ... Improved quality of adjustment ”(page 80, left column). In fact, it is concluded that the feedforward control can solve the false operation caused by the false signal which can not be overcome by the feedback control, which enlarges the application scope of feedforward control. However, under the false signals, we can see how to apply the principle of invariance to obtain the feedforward compensation model correctly, which is to use the feedforward control in this kind of problem