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Multiplex control system for returning a motor driven element to a stored position

  • US 4,845,415 A
  • Filed: 12/08/1987
  • Issued: 07/04/1989
  • Est. Priority Date: 12/08/1987
  • Status: Expired due to Term
First Claim
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1. In a vehicle of the type comprising a driver'"'"'s seat;

  • a plurality of motors coupled to the seat to adjust seat position along respective axes, means for generating a plurality of input signals, a multiplex system comprising at least one first remote station coupled to the input signals generating means to generate multiplexed input signals in response to the input signals, a central controller, at least one second remote station coupled to the motors to control operation of the motors in response to multiplexed motor control signals generated by the controller; and

    at least one control bus interconnected between the controller and the remote stations to carry the multiplex input signals from the first remote station to the controller and to carry the multiplexed motor control signals from the controller to the second remote station, and means, included in the controller, for generating the multiplexed motor control signals to control the motors in response to the multiplexed input signals;

    the improvement comprising;

    first means, included in the controller, for generating motor control signals to automatically drive each of motors to a respective home position;

    means, included in the controller, for storing a set of motor activation times which define a selected seat position, said storing means comprising;

    means for activating the first means to drive the motors to the respective home positions;

    means for automatically timing periods of motor activation for each of the motors as the motors are manually controlled by the input signal generating means to move the seat to the selected position; and

    means for storing the times periods of motor activation as said motor activation times; and

    means, included in the controller, for automatically moving the seat to the selected seat position, said moving means comprising;

    means for activating the first means to drive the motor to the respective home positions; and

    means for automatically generating motor control signals to drive each of the motors for a time corresponding to the respective motor activation times to drive the seat to the selected position.

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