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Control device for vehicle including anti-skid braking system and power steering control system

  • US 5,335,979 A
  • Filed: 10/06/1993
  • Issued: 08/09/1994
  • Est. Priority Date: 10/09/1992
  • Status: Expired due to Term
First Claim
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1. A control device for a vehicle including an anti-skid braking system and power steering control system including an electric motor for proving an assisting steering torque for a steering wheel of said vehicle, said control device comprising:

  • torque sensor means for determining a torque of said steering wheel;

    road wheel velocity sensor means for detecting velocities of road wheels of said vehicle;

    brake sensor means for detecting an operation of a brake of said vehicle;

    first control means, coupled to said torque sensor means, for determining a driving direction and a driving torque of said electric motor on the basis of an output of said torque sensor means, said first control means generating a first direction signal and a torque signal for said electric motor on the basis of said driving direction and said driving torque of said electric motor determined by said first control means;

    second control means, coupled to said torque sensor means, said road wheel velocity sensor means and said brake sensor means, for generating a brake operation signal for said anti-skid braking system on the basis of outputs of said road wheel velocity sensor means and said brake sensor means, wherein said second control means determines a driving direction of said electric motor on the basis of said output of said torque sensor means and outputs a second direction signal for said electric motor on the basis of said direction of said electric motor determined by said second control means;

    logical circuit means, coupled to said first and second control means, for generating a direction command signal, coinciding with said first and second direction signals, only when said first and second direction signals output from said first and second control means, respectively, coincide; and

    motor drive circuit means coupled to said first control means and said logical circuit means, said motor drive circuit means driving said electric motor in accordance with said torque signal and said direction command signal.

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