| 摘要 |
<p>The power assisted steering system includes an electrical transformer (41) comprising two coaxial coils (40,42). One coil is fixed whilst the other is able to rotate with the moving shaft which operates the steering mechanism. A sensor (55) is attached to the mechanism in order to provide a signal representing the angular movement between these two parts. The sensor is supplied with power via the transformer, and also provides its output to the control system via this same transformer. This obviates the need for any sliding electrical contacts which can cause poor transmission of the control signals. The sensor includes an emitter (56) and a receiver (57) of light in order to sense the relative angular positions of the two components of the steering mechanism.</p> |
