| 摘要 |
A vehicle steering apparatus ( 10 ) includes a steering gear assembly ( 20 ) which is connected with a steerable vehicle wheel ( 12 ). A first sensor ( 26 ) has an output signal which is a function of steering wheel position. A second sensor ( 28 ) has an output signal which is a function of steerable wheel position. A controller ( 30 ) is operable to provide an output signal when the steerable vehicle wheel position does not correspond to the steering wheel position. A motor ( 34 ) is connected with a differential gear mechanism ( 36 ). The motor ( 34 ) is operable in response to the output signal from the controller ( 30 ) to effect operation of the differential gear mechanism ( 36 ) to actuate the steering gear assembly ( 20 ) and change the position of the steerable vehicle wheel ( 12 ).
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