Patent ID: 9618943
Date: 2017-04-11
CPC Classifications: G05D,Y10T

Claim:
1. A fluid control system comprising a flow rate adjusting valve that adjusts a flow rate of a fluid flowing in a flow channel by changing an open degree of the flow rate adjusting valve in accordance with a value of a driving signal, a flow rate measuring device for measuring the flow rate of the fluid that flows in the flow channel, and a control circuit that conducts feedback control on the flow rate adjusting valve by outputting the driving signal so as to make a measured flow rate obtained by the flow rate measuring device equal to a given target flow rate, wherein the control circuit comprises an initial value generation part which outputs an initial value of the driving signal applied to the flow rate adjusting valve at a time when the control circuit initiates control of the flow rate adjusting valve from a fully closed state; and the initial value generation part does not conduct the feedback control, but sets an initial value of the driving signal by the use of at least a type of the fluid or a temperature of the fluid at a time, as a parameter, wherein the initial value of the driving signal is set based on the type of the fluid or the temperature of the fluid that is detected at a time when the feedback control is not being conducted.