Transmission control device of automatic transmission

Abstract

Abstract PURPOSE:To smooth a feedback control by detecting the variation condition of the engaging pressure correcting amount in the feedback control of the engaging pressure in the former transmission, and correcting the initial value of the engaging pressure in this time depending on the result of the detection. CONSTITUTION:Depending on the initial value 3-1 of the engaging pressure determined by an initial value determination (learning) device 3, responding to a running parameter detected by a detecting device 1, and an engaging pres sure directing device 5 controls initially the engaging pressures of numerous rotation members 6-1 of an automatic transmission 6 through a hydraulic control device 6-2, and at the same time, feedback-controls the actual rotation conditions 6-3 of the rotation members 6-1 depending on the object rotation locus 4-1 from an object rotation locus determination device 4 of the determined member. In this case, the variation condition of the engaging pressure correcting amount in the feedback control of the engaging pressure in the former transmission is detected by an engaging pressure correcting amount detecting device, and depending on the result of the detection, the learning device 3 corrects the engaging pressure correcting amount in this time. In such a way, a much smooth er feedback control can be carried out.

Inventors

• 👤 Hideaki Otsubo
• 👤 秀顕 大坪
• 👤 Kunihiro Iwatsuki
• 👤 邦裕 岩月

Bibliographic Details