Method for controlling power to a motor in a vehicle door mirror
First Claim
Patent Images
1. In a vehicle door mirror including a motor and an adjuster assembly driven by the motor for moving a mirror glass connected with the adjuster assembly, a method for controlling delivery of power to the motor comprising:
- detecting a voltage being supplied by a vehicle battery; and
controlling delivery of power to the motor based on the detected voltage, wherein the step of controlling delivery of power to the motor further includes;
calculating a motor speed for the motor;
determining a maximum overshoot for a slip detection, which occurs when the mirror glass contacts an obstruction and the adjuster assembly generates an audible click as a result of the motor driving the adjuster assembly while the motor glass is precluded from moving;
comparing the calculated motor speed with the maximum overshoot; and
stopping delivery of power to the motor when the calculated motor speed equals the maximum overshoot.
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Abstract
In a vehicle door mirror including a motor and an adjuster assembly driven by the motor for moving a mirror glass connected with the adjuster assembly, a method for controlling delivery of power to the motor is described. The method can include detecting a voltage being supplied by a vehicle battery of the vehicle that includes the vehicle door mirror, and controlling delivery of power to the motor based on the detected voltage. A memory mirror system is also disclosed.
27 Citations
15 Claims
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1. In a vehicle door mirror including a motor and an adjuster assembly driven by the motor for moving a mirror glass connected with the adjuster assembly, a method for controlling delivery of power to the motor comprising:
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detecting a voltage being supplied by a vehicle battery; and controlling delivery of power to the motor based on the detected voltage, wherein the step of controlling delivery of power to the motor further includes; calculating a motor speed for the motor; determining a maximum overshoot for a slip detection, which occurs when the mirror glass contacts an obstruction and the adjuster assembly generates an audible click as a result of the motor driving the adjuster assembly while the motor glass is precluded from moving; comparing the calculated motor speed with the maximum overshoot; and stopping delivery of power to the motor when the calculated motor speed equals the maximum overshoot.
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2. In a vehicle door mirror including a motor and an adjuster assembly driven by the motor for moving a mirror glass connected with the adjuster assembly, a method for controlling delivery of power to the motor comprising:
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detecting a voltage being supplied by a vehicle battery; and controlling delivery of power to the motor based on the detected voltage, wherein the step of controlling delivery of power to the motor further includes; determining a prohibition time based on the voltage detected from the vehicle battery; sensing for a change in mirror glass position via at least one mirror glass position sensor; waiting a predetermined amount of time; after waiting the predetermined amount of time, again sensing for another change in mirror glass position via the at least one mirror glass position sensor; determining whether a position of the mirror glass has changed based on signals received from the at least one mirror glass position sensor; where the position of the mirror glass has not changed after the prohibition time has elapsed, stopping power delivery to the motor; and where the position of the mirror glass has changed before the prohibition time has elapsed, continuing power delivery to the motor. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A vehicle memory mirror system comprising:
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a vehicle battery; a mirror glass; an adjuster assembly connected with the mirror glass, the adjuster assembly including a gear; a motor including an output shaft operatively connected with the gear, wherein rotational movement of the output shaft results in movement of the gear, which results in movement of the mirror glass; a mirror controller in electrical communication with the vehicle battery and the motor, wherein the mirror controller is configured to control delivery of electrical power to the motor based on a voltage output from the vehicle battery; and a mirror position sensor in electrical communication with the mirror controller and configured to detect a change in position of the mirror glass, wherein the mirror controller is configured to stop delivery of electrical power to the motor based on detecting no movement of the mirror glass after a predetermined time has elapsed with no change in the position of the mirror glass, wherein the predetermined time is based on the voltage output from the battery. - View Dependent Claims (13, 14, 15)
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Specification