The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 08, 1990
Filed:
Jul. 07, 1988
Hideaki Fujioka, Itami, JP;
Tatsuji Matsumoto, Itami, JP;
Sumitomo Electric Industries, Ltd., Osaka, JP;
Abstract
A traction control system, or an anti-lock brake system comprises a wheel behavior detecting system which comprises a coefficient calculating circuit for calculating, on the basis of output values from wheel speed detectors, a bad road coefficient A of representative of the road surface irregularity upon which the vehicle is moving, and a control variable filtering circuit for producing a filtered value Lm which exhibits a normal waveform when the bad road coefficient A is small and a filtered waveform when the bad road coefficient is great thereby keeping abrupt changes caused by the bad road from erroneously controlling the traction or antilock systems. With the wheel behavior detecting system used in the traction control system or the anti-lock brake system, a control command determining circuit responds to the output from the filtering circuit, that is, the control variable which has been modified, to determine the command necessary to control braking forces to be applied to the wheels.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile