| 摘要 |
The invention is directed to a method for periodically clock driving a through-flow control valve between a first position wherein the valve is closed and a second position wherein the control valve is open to pass a flow of fluid therethrough. The valve is driven by a drive signal having a period duration and the valve opens in response to the drive signal only after a delay time (tv) has elapsed. In the method, the period duration of the drive signal is changed, and a reaction of a variable, which is operatively coupled to the flow, is detected. A value of the delay time (tv) is utilized when forming the drive signals and the value of the delay time (tv) is changed in dependence upon the detected reaction of the variable. |
