Controller and method for preventing sending saturated control signals to an actuator
AssigneeChi Mei Communication Systems, Inc.
InventorCHIEN-HAO LIANG
Life of this patent
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Abstract
In a controller and method for preventing sending saturated control signals to an actuator, the controller receives parameters of controlling the actuator. The parameters include: a limit capacity value of the actuator, a predefined value which the status value of the plant needs to obtain, a ratio of the ideal control signal value to the limit capacity value, and a ratio of the actual control signal value to the limit capacity value. The controller calculates an ideal control signal value and an actual control signal value by applying a hyperbolic tangent function. And then the controller sends a control signal to the actuator according to the actual control signal value. The actuator drives a plant to move according to the control signal.
Claims15
A controller for preventing sending saturated control signals to an actuator comprising:
- a storage system;
- and
- at least one processor to execute one or more programs stored in the storage system, the one or more programs comprising:
- a receiving module operable to receive a status value “x” of a plant from a sensor connected the controller and the plant;
- a calculating module operable to calculate an ideal control signal value of the actuator “co” according to the status value “x”, and calculate an actual control signal value of the actuator according to the ideal control signal value “co”;
- and
- a sending module operable to send a control signal to the actuator according to the actual control signal value, so as to control the actuator to drive the plant to move.
A method for preventing sending saturated control signals to an actuator, the method comprising:
- (a) receiving by a controller a status value “x” of a plant from a sensor;
- (b) calculating an ideal control signal value of the actuator “co” according to the status value “x”;
- (c) calculating an actual control signal value of the actuator according to the ideal control signal value “co”;
- and
- (d) sending a control signal to the actuator according to the actual control signal value, so as to control the actuator to drive the plant to move according to the control signal.
A computer readable medium having stored therein instructions that, when executed by a controller, causes the controller to perform a method for preventing sending saturated control signals to an actuator, the method comprising:
- (a) receiving by a controller a status value “x” of a plant from a sensor;
- (b) calculating an ideal control signal value of the actuator “co” according to the status value “x”;
- (c) calculating an actual control signal value of the actuator according to the ideal control signal value “co”;
- and
- (d) sending a control signal to the actuator according to the actual control signal value, so as to control the actuator to drive the plant to move according to the control signal.
Dependencies are inferred from the claim text.