Method and Device for Controlling a Valve

摘要

A method includes applying a specified starting voltage to a valve actuator in a first specified operating mode for closing the valve, the valve having a spring with a spring force against which an actuator force of the actuator acts. In the first operating mode, a first period of time is ascertained which represents that a maximum current value has been reached. Furthermore, a second period of time is ascertained which represents that a minimum current value has been reached. In a specified second operating mode, the specified starting voltage is applied to the actuator until the end of the first period of time is reached, and a control voltage is then applied to the actuator until the end of the second period of time is reached, wherein the average value of the control voltage is lower than the average value of the starting voltage.

主权项

1. A method for controlling a valve which has a spring with a spring force and an actuator with an actuator force which counteracts the spring force, the method comprising:
for the purpose of closing the valve in a predefined first operating mode by a process including:
applying a predefined starting voltage to the actuator,determining a maximum current value representing a current peak of a current impressed by the applied starting voltage,determining a first time period representative of a duration between the starting voltage being applied and the maximum current value being reached,determining a minimum current value representing a local minimum of the impressed current, wherein the minimum current value follows the maximum current value, anddetermining a second time period is determined, said second time period being representative of a duration between the starting voltage being applied and the minimum current value being reached, and for the purpose of closing the valve in a predefined second operating mode by a process including: applying the predefined starting voltage to the actuator for the determined first time period, and then, after the first time period and until the end of the second time period, using a predefined control voltage to adjust the current impressed onto the actuator, wherein an average value of the predefined control voltage is lower than an average value of the starting voltage.