The control of the variable frequency automatic booster pump is not based on the upper and lower limit pressure values, but is implemented based on the concept of closed -loop control. The so -called closed -loop control is to perform correction methods based on the output feedback of the control object. It is corrected according to the quota or standard when measured the actual deviation between the actual and the plan. Closed -loop control, take out the control signal from the output volume change as a comparative amount to the input terminal control input volume. Generally, the amount of extraction and input volume is the opposite, so it is called negative feedback control. The automatic control of industrialization is usually based on the concept of closed -loop control. To put it simply, the closed -loop control principle of the frequency conversion water pump is to compare the [actual setting target pressure value] with [currently detected pressure value]. Through some column function algorithm Can. During the frequency conversion speed adjustment process of the water pump equipment, when the water pressure drops fast, the speed regulation process of the frequency converter is accelerated, and vice versa will become slower. As an end user, you do n’t need to learn more about the specific working principles and processes of the automatic pump automatic pressure pump in detail. Simply summarize: quickly operate quickly to achieve the set pressure value; if the amount of water is small, run at low speed so that it will not exceed the setting. Pressure value. In the case where the pump flow is sufficient, whether it is large or small, the actual pressure value of the pipe network is very close to the set pressure value (the effect of controller accuracy, the pressure error is about ± 0.01MPa). In this way, the frequency frequency automatic pressure -booster pump achieves the purpose of constant pressure water supply.