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:
Jun. 17, 2003
Filed:
Aug. 07, 2001
Yoshiyuki Aoyama, Nishio, JP;
Mitsutoshi Kamiya, Kariya, JP;
Takeshige Miyazaki, Anjo, JP;
Ryuji Choshi, Aichi-ken, JP;
Yoshihiro Ichikawa, Gifu-ken, JP;
Aisin AI Co., Ltd., Nishio, JP;
Abstract
A gear shifting control device for varying a gear ratio of a synchromesh transmission which controls an actuator to agree with an actual value of sleeve load in an axial direction with a required value with higher accuracy at a synchronizer of the transmission. A continuously varying driving signal with time is supplied to the actuator when necessary to change the actual value of the sleeve load to the required value different from the current value. A reaching time of the driving signal reaching the value corresponding to the required value to the actuator is determined based on an initial speed which is a speed of the sleeve at start of supplying the driving signal and a vibration cycle when the sleeve load is vibrated in response to the supply of a step signal to the actuator.