Title:
PARKING ACTUATOR POSITION LEARNING METHOD
Document Type and Number:
WIPO Patent Application WO/2021/179585
Kind Code:
A1
Abstract:
A parking actuator position learning method involves a parking actuator. The parking actuator comprises a parking ratchet wheel (2), a parking pawl (13), and a shifting mechanism. The shifting mechanism comprises a rotating shaft (11) provided with an angle sensor, and a limiting column (12). Under the condition that the duty ratio of squeezing in a non-P direction by means of open-loop control is not allowed to exceed 50%, the value of a locked-rotor position is recorded, so that a locking position and an unlocking position in the open-loop control are found, and the technical problem of self-learning suitable P locking position and unlocking position to reduce the deviation between the parking actuator and a gearbox is solved. According to the method, a non-P position and a P position for the open-loop control are found by means of unilateral self-learning, and thus the non-P position and the P position are more suitable and more reliable.
Inventors:
ZHOU ZHIHUA (CN)
XU BO (CN)
MA TUI (CN)
SU LU (CN)
XU BO (CN)
MA TUI (CN)
SU LU (CN)
Application Number:
PCT/CN2020/119352
Publication Date:
September 16, 2021
Filing Date:
September 30, 2020
Export Citation:
Assignee:
NANJING MEIJUN ELECTRONIC TECH CO LTD (CN)
International Classes:
B60T13/74; F16H63/34; B60T17/22; G06N20/00
Domestic Patent References:
| WO2007114409A1 | 2007-10-11 |
Foreign References:
| CN110920589A | 2020-03-27 | |||
| CN111336250A | 2020-06-26 | |||
| CN110469659A | 2019-11-19 | |||
| CN207297854U | 2018-05-01 | |||
| CN110425277A | 2019-11-08 |
Attorney, Agent or Firm:
NANJING JIUZHI INTELLECTUAL PROPERTY FIRM (GENERAL PARTNERSHIP) (CN)
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