Power steering direction sensor

Details Power steering direction sensor Power steering direction sensor

B - Operations, Transporting

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341/79, 340/135.

B62D 15/00 (2006.01) B62D 5/00 (2006.01) B62D 15/02 (2006.01) B63H 25/24 (2006.01) B63H 25/52 (2006.01) G01L 5/22 (2006.01)

Patent

CA 1178694

-i- Abstract of the Disclosure A plastic material, preferably polyvinylidene fluoride (PVDF) film, made highly piezoelectric by known methods, is placed in a sensor unit structure wherein pressure is exerted against the piezoelectric film by means of rotation of the steering wheel of the boat or vehicle to thereby cause the piezoelectric film to generate electric signals which are used in controlling the rpm of a low-inertia, instantaneously re- versible steering power assist motor. The rpm of the motor is substantially proportional to the electric signals, which, in turn, are determined by, and responsive to, the degrees of rotation and speed of rotation of the steering wheel. The direction of rotation of the steering wheel determines the direction of steering assist, i.e., to the left or right. Available torque of the motor however is substantially inversely proportional to rpm of the engine propelling the boat or vehicle.

384949

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