Valve controller

Details Valve controller Valve controller

2006-12-12

2006-12-12

Ip, Paul (Department: 2837)

Electricity: motive power systems

Motor-reversing

C318S445000, C123S090150, C123S090170

Reexamination Certificate

active

07148640

ABSTRACT:
The invention provides a valve controller of a motor utilizing type for improving control accuracy and reducing cost. The valve controller controls valve opening and closing of an engine by utilizing rotation torque of the motor, and has a driving circuit receiving a control signal generated by a control circuit, and applying an electric current to the motor and driving the motor on the basis of a target rotation number of the motor shown by this control signal using a frequency, and a target rotating direction of the motor shown by this control signal using a duty ratio.

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