The traditional linear constant parameter PID controller is very difficult to achieve the satisfying results.
传统的线性常参数PID控制器很难取得非常满意的效果。
When all elemental equations can be described by a set of constant parameter values, as in the familiar RLC circuit, the system is said to be stationary or time-invariant or constant coefficient.
当所有基础方程都能用一组定常参数值来描述，正如熟知的RLC电路的情况，就称该系统是稳态的，或时不变的，或常系数的。
A design procedure with constant parameter frequency method is developed for the temperature control system with variable parameter applicable especially to thermodynamics.
提出了热工专业中特殊的变参数控制系统的定参数频率设计法，应用计算机进行了仿真计算并进行了实际系统的测试。
The transmission of the earth wave is stable, hardly influenced by climate and its channel parameter does not change with time basically, it is Constant Parameter Channel.
地波传播受天气的影响较小，比较稳定，信道参数基本上不随时间的变化而变化，是恒参信道。
The transmission of the earth wave is stable, hardly influenced by climate and its channel parameter does not change with time basically, it is Constant Parameter Channel.
地波传播受天气的影响较小，比较稳定，信道参数基本上不随时间的变化而变化，是恒参信道。
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