Controller of exhaust gas recirculation valve
AssigneeMitsubishi Denki Kabushiki Kaisha
InventorsSatoshi Kawamura, Sotsuo Miyoshi, Toshihiko Miyake, Youichi Fujita
Life of this patent
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Abstract
Hysteresis correction is carried out based on an amount of deviation between input data indicative of the target opening/closing position of a control valve, and the current opening/closing position of the control valve, or based on the output value of a PI controlled variable operation unit, to which a value of the deviation is entered.
Claims4
A controller for an exhaust gas recirculation valve adapted to open/close on torque balance between a return torque applied by pressing means in one direction selected from opening and closing directions of a control valve, and a motor torque applied by a DC motor in the opening or closing direction of the control valve, comprising:
- a PI controlled variable operation unit for receiving a deviation between input data indicative of a target opening/closing position of the control valve, and detection data indicative of a current opening/closing position of the control valve;
- a hysteresis correction unit for obtaining, a hysteresis correction quantity from an output quantity of the PI controlled variable operation unit;
- and
- a motor driving voltage conversion unit for receiving a sum of the output quantity of the PI controlled variable operation unit and the hysteresis correction quantity, and converting the result into a voltage to be supplied to the DC motor.
A controller for an exhaust gas recirculation valve adapted to open/close on torque balance between a return torque applied by pressing means in one direction selected from opening and closing directions of a control valve, and a motor torque applied by a DC motor in the opening or closing direction of the control valve, comprising:
- a PI controlled variable operation unit for receiving a deviation between input data indicative of a target opening/closing position of the control valve, and detection data, indicative of a current opening/closing position of the control valve;
- a hysteresis correction unit for obtaining a hysteresis correction quantity from an input quantity of the PI controlled variable operation unit;
- and
- a motor driving voltage conversion unit for receiving a sum an output quantity of the PI controlled variable operation unit and the hysteresis correction quantity, and converting the result into a voltage to be supplied to the DC motor.
Dependencies are inferred from the claim text.