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:
Nov. 17, 1987
Filed:
Oct. 04, 1985
Applicant:
Inventor:
Yasuo Naitou, Himeji, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B60K / ;
U.S. Cl.
CPC ...
36443107 ; 123352 ; 123492 ; 180176 ;
Abstract
An automobile speed control system wherein a speed deviation between a desired speed as set by the driver of the vehicle and the current running speed is corrected by changing the pulse width of a pulse signal applied to a throttle valve of an engine through an actuator for driving the throttle valve. The pulse width is calculated in a control circuit every predetermined time interval by using the speed deviation, the acceleration of the speed, the rate of change of the acceleration, and control parameters as proportional coefficient for the acceleration. The control parameters are selected according to the relationship between the acceleration and the rate of change of the acceleration.