Instruments based on the lower limit of two switch-contact device, the pressure to set a signal or when the value of on-off control circuit for the operating system's automatic control or the use.

仪表设上、下限二位开关型接点装置，在压力达到设定值时发出信号或通断控制电路，供作业系统自动控制或发讯用。

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The method of weakening integral when meeting limit is used in the common rail pressure PID control. The sampling cycle is obtained from the stepping curve, and many factors are considered.

在系统共轨管油压的控制中引入遇限制削弱积分法，采样周期是从试验测出的阶跃响应曲线获取的，并考虑诸多的影响因素。

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