公开(公告)号：US11067171B2

公开(公告)日：2021-07-20

申请号：US16639965

申请日：2018-09-04

申请人： JATCO LTD

发明人： Ken Okahara

IPC分类号： F16H61/662 ,  F16H59/70 ,  B60W30/19 ,  B60W50/00 ,  B60W10/107

摘要： A control device for a continuously variable transmission performs feedback control so that an actual transmission control value becomes a target transmission control value. The control device includes a phase lead compensation unit configured to perform phase lead compensation of the feedback control, a phase delay compensation unit configured to perform phase delay compensation of the feedback control, a first peak value frequency determination unit configured to change a peak value frequency of the phase lead compensation according to a transmission ratio of the continuously variable transmission, and a second peak value frequency determination unit configured to change a peak value frequency of the phase delay compensation based on the peak value frequency of the lead compensation.

公开(公告)号：US10989301B2

公开(公告)日：2021-04-27

申请号：US16085363

申请日：2017-02-23

申请人： JATCO Ltd

发明人： Ken Okahara ,  Kazutaka Adachi ,  Yutaka Kaneko ,  Kenichi Mori

IPC分类号： F16H59/70 ,  F16H61/66 ,  F16H61/662 ,  F16H61/02 ,  F16H61/00 ,  F16H61/70 ,  F16H59/18 ,  F16H59/44

摘要： A controller constitutes a control device for continuously variable transmission for executing a feedback control of a transmission so that an actual speed ratio reaches a target speed ratio. The controller includes a first phase lead compensator and a second phase lead compensator configured to perform phase lead compensation of a feedback primary command pressure, and a peak value frequency determination unit configured to change a peak value frequency according to a speed ratio.

公开(公告)号：US10731757B2

公开(公告)日：2020-08-04

申请号：US16083431

申请日：2017-02-27

申请人： JATCO Ltd

发明人： Takurou Kawasumi ,  Ken Okahara ,  Midori Yamaguchi ,  Masahiro Yamamoto ,  Hiroki Iwasa ,  Hiroki Kumashiro ,  Masayuki Shimizu ,  Ryuuichi Furukawa ,  Kenichi Mori ,  Kazutaka Adachi ,  Yutaka Kaneko ,  Hiroyuki Ashizawa

IPC分类号： F16H61/662 ,  F16H61/70 ,  B60W10/107 ,  F16H59/14 ,  F16H59/40 ,  F16H59/42

摘要： The controller performs shift control of the transmission such that an actual pressure of a primary pressure becomes an indicating pressure. The controller includes a phase advance compensator which performs advance compensation of the indicating pressure, and a setting unit which sets an indicating pressure on which the advance compensation is performed by the phase advance compensator as the indicating pressure, in accordance with at least one of a rotation speed of a primary pulley, an input torque to a secondary pulley, a speed ratio, or a changing rate.

公开(公告)号：US11162581B2

公开(公告)日：2021-11-02

申请号：US16639947

申请日：2018-09-11

申请人： JATCO LTD

发明人： Ken Okahara

IPC分类号： F16H61/66 ,  F16H59/18 ,  F16H59/44 ,  F16H59/70 ,  F16H59/72 ,  F16H61/662

摘要： A control device for a continuously variable transmission performs feedback control so that an actual transmission control value becomes a target transmission control value. The control device for a continuously variable transmission includes a phase lead compensation unit configured to perform phase lead compensation of the feedback control, a phase delay compensation unit configured to perform phase delay compensation of the feedback control, and a phase compensation on/off determination unit configured to stop the phase delay compensation by the phase delay compensation unit when an unstable traveling state of a vehicle is detected, and to restore the phase delay compensation when a traveling state of the vehicle has changed.

公开(公告)号：US11137071B2

公开(公告)日：2021-10-05

申请号：US16639958

申请日：2018-09-04

申请人： JATCO LTD

发明人： Ken Okahara

IPC分类号： F16H61/66 ,  F16H59/14 ,  F16H59/70 ,  F16H59/72 ,  F16H61/662 ,  F16H61/04

摘要： A control device for a continuously variable transmission mounted in a vehicle, includes a lead compensation unit and a delay compensation unit. The lead compensation unit is configured to perform phase lead compensation in a transmission ratio control system of the continuously variable transmission according to an operating state of the vehicle with a lead amount being variable according to a vibration frequency of a torsional vibration of an input shaft of the continuously variable transmission. The delay compensation unit is configured to perform phase delay compensation in the transmission ratio control system with a delay amount being variable according to the operating state of the vehicle.

公开(公告)号：US11236824B2

公开(公告)日：2022-02-01

申请号：US16980502

申请日：2019-02-28

申请人： JATCO Ltd

发明人： Ken Okahara ,  Atsushi Shimada

IPC分类号： F16H61/66 ,  F16H59/04 ,  F16H59/06 ,  F16H59/18 ,  F16H59/44 ,  F16H59/02 ,  F16H59/36

摘要： A continuously variable transmission has a variator (4) structured to be able to continuously vary a transmission ratio and a control unit (100). The control unit (100) continuously varies a transmission ratio of the variator (4) in a continuously variable shift mode. In a manual mode in which a manual mode switch (36c) is ON, the transmission ratio is maintained. When a shift switch (36a, 36b) is operated by a driver during the manual mode, the control unit (100) performs shift of the variator (4) so as to change an input rotation speed of the variator (4) by a predetermined rotation speed (ΔN1) regardless of a vehicle speed.

公开(公告)号：US20190226580A1

公开(公告)日：2019-07-25

申请号：US16329610

申请日：2017-08-01

申请人： Nissan Motor Co., Ltd. ,  JATCO Ltd

发明人： Soojung Hong ,  Kenichi Mori ,  Yutaka Kaneko ,  Kazutaka Adachi ,  Ken Okahara ,  Masayuki Miyazono

IPC分类号： F16H61/662

摘要： A control method of a continuously variable transmission mounted on a vehicle includes performing advance compensation in a speed ratio control system of the continuously variable transmission, and making an advance amount according to a vibration frequency of torsional vibration of an input shaft of the continuously variable transmission which is the advance amount of the advance compensation variable in accordance with an operation state of the vehicle. A feedback gain of speed ratio control of the continuously variable transmission performed in the speed ratio control system is variable in accordance with an operation state of the vehicle. When the advance amount is made variable, the advance amount is made variable in accordance with the feedback gain.

公开(公告)号：US11204092B2

公开(公告)日：2021-12-21

申请号：US16082597

申请日：2017-02-17

申请人： JATCO LTD

发明人： Ken Okahara ,  Hiroyasu Tanaka

IPC分类号： F16H59/06 ,  F16H61/14 ,  B60W30/188 ,  F16H59/18 ,  F16H59/38 ,  F16H59/70 ,  F16H61/04 ,  F16H61/66 ,  F16H63/46 ,  F16H59/36 ,  F16H61/662 ,  B60W10/02 ,  F16H61/00 ,  B60W50/00 ,  G07C5/08 ,  F16H61/16 ,  F16H59/02

摘要： A control device for an automatic transmission includes a continuously variable transmission mechanism, a torque converter, a target transmission ratio calculation unit, a feedback control unit, and a phase compensation unit. The torque converter has a lock-up clutch. The target transmission ratio calculation unit is configured to calculate a target transmission ratio based on a travelling state. The feedback control unit is configured to perform feedback control based on an actual value indicative of a state of the continuously variable transmission mechanism. The phase compensation unit is configured to perform phase lead compensation of the feedback control based on the travelling state. The phase compensation control unit is configured to halt the phase lead compensation when an unstable travelling state of a vehicle is detected. The phase compensation control unit is further configured to release the lock-up clutch when the phase lead compensation is halted.

公开(公告)号：US11067172B2

公开(公告)日：2021-07-20

申请号：US16639941

申请日：2018-09-11

申请人： JATCO LTD

发明人： Ken Okahara

IPC分类号： F16H61/664 ,  F16H59/14 ,  F16H59/42 ,  F16H59/70 ,  F16H61/04 ,  F16H61/662

摘要： A control device for a continuously variable transmission performs transmission control so that an actual transmission control value becomes a target transmission control value. The control device includes a lead compensation unit, delay compensation unit, and a setting unit. The lead compensation unit performs lead compensation of the target transmission control value. The delay compensation unit performs delay compensation of the target transmission control value. The setting unit is configured to set as the target transmission control value a post-compensation target transmission control value for which compensation is performed by the lead compensation unit and the delay compensation unit according to at least one of an input side rotation speed of the continuously variable transmission, an input torque to a driven side rotation element of the continuously variable transmission, a transmission ratio of the continuously variable transmission, and a rate of change of the transmission ratio.