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Current control system for linear solenoid

  • US 5,951,616 A
  • Filed: 03/24/1997
  • Issued: 09/14/1999
  • Est. Priority Date: 04/15/1996
  • Status: Expired due to Term
First Claim
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1. A current control system for a linear solenoid for feedback-controlling an output voltage value on the basis of a difference between a command current value to the linear solenoid, as set according to a vehicle running state, and a feedback current value, as produced by monitoring a current value actually passing through the linear solenoid, comprising:

  • decision means for deciding whether or not the resistance value of the linear solenoid can be calculated;

    real resistance value calculating means for calculating a real resistance value of said linear solenoid on the basis of a signal coming from said decision means, said command current value and said output voltage value;

    comparison means for comparing the calculated real resistance value and a resistance value in a memory unit; and

    correction means for correcting the resistance value in said memory unit on the basis of the comparison result of said comparison means,wherein said output voltage value is outputted on the basis of the corrected resistance value.

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