Method for controlling an electric pump drive motor of a power steering device
First Claim
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1. A method for controlling an electric pump drive motor of a power steering device for a motor vehicle, the method comprising the steps of:
- (a) providing a drive motor having at least three operational output stages, the output stages including a high output stage in which the motor speed is independent of the vehicle speed, a low output stage in which the motor speed is a function of the vehicle speed and at least one further middle output stage in which the motor speed also is a function of the vehicle speed, the motor being connected to a device for monitoring the motor current consumption;
(b) monitoring the current consumption of the motor; and
(c) switching over between the three output stages with the switching over taking place as a function of the current consumption of the motor.
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Abstract
In a method for controlling an electric pump drive motor of a power steering device, a high output stage and a low output stage are provided, in which the motor can be operated. Between the two output stages at least one further middle output stage in which the motor can be operated is provided. A switchover between the three output stages takes place as a function of the current consumption of the motor.
23 Citations
9 Claims
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1. A method for controlling an electric pump drive motor of a power steering device for a motor vehicle, the method comprising the steps of:
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(a) providing a drive motor having at least three operational output stages, the output stages including a high output stage in which the motor speed is independent of the vehicle speed, a low output stage in which the motor speed is a function of the vehicle speed and at least one further middle output stage in which the motor speed also is a function of the vehicle speed, the motor being connected to a device for monitoring the motor current consumption; (b) monitoring the current consumption of the motor; and (c) switching over between the three output stages with the switching over taking place as a function of the current consumption of the motor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification