Control device for continuously variable transmission |
|||||||
| 申请号 | JP9880490 | 申请日 | 1990-04-13 | 公开(公告)号 | JPH0456A | 公开(公告)日 | 1992-01-06 |
| 申请人 | Fuji Heavy Ind Ltd; | 发明人 | SATO YOSHIJI; | ||||
| 摘要 | PURPOSE:To improve control precision by providing a correction amount calculating means to determine a correction amount of a dither by means of a total sum of deviation integration values of dither currents to a solenoid current and output it to a dither applying means. CONSTITUTION:A control unit 70 sets a solenoid current IS corresponding to a target secondary pressure. A dither D is applied in an output part 71 by means of a dither applying part 72, and a dither current ID periodically changed at the same level as that of the solenoid current IS flows to a proportional solenoid 51. In this case, a secondary pressure control valve is proportionally operated as it is vibrated by means of a dither current ID, for regulating pressure and controlling so that a secondary pressure coincides with a target value. Meanwhile, the dither current ID from an output part 71 is inputted to an integration value calculating part 73 together with the solenoid current IS. Deviation integration values of the solenoid currents IS to the dither currents are calculated, and by using a total value thereof, control is made by a correction amount calculating part 74 so that an average current of the dither currents ID coincides with the solenoid current IS. | ||||||
| 权利要求 | |||||||
| 说明书全文 | |||||||
QQ群二维码
意见反馈
意见反馈