Title:
GEAR SHIFTING INTERVENTION CONTROL METHOD FOR TWO-GEAR X-BY-WIRE AUTOMATIC TRANSMISSION OF ELECTRIC CAR
Document Type and Number:
WIPO Patent Application WO/2018/095006
Kind Code:
A1
Abstract:
A gear shifting intervention control method for a two-gear X-by-wire automatic transmission of an electric car. According to the method, a D-gear switching signal, a rotating speed signal n2 of a rotating speed sensor of a transmission output shaft, a rotating speed signal n1 of a rotating speed sensor of a motor, and an opening signal α of a position sensor of an accelerator pedal are detected by an electronic control unit (100) of the transmission, so that whether a first gear needs to be shifted to a second gear or the second gear needs to be shifted to the first gear is determined, and intervention control over the rotating speed of the motor is performed during a gear shifting process. When the first gear is shifted to the second gear, a target rotating speed of the motor for shifting the first gear to the second gear is determined according to a target rotating speed function of the motor for shifting the first gear to the second gear, the electronic control unit (200) of the motor controls the rotating speed of the motor to reach the target rotating speed of the motor for shifting the first gear to the second gear, and the intervention control over the upshifting process of the X-by-wire automatic transmission is performed, so that stable upshifting of the X-by-wire automatic transmission is implemented.
Inventors:
QU JINYU (CN)
LV NANA (CN)
GUO ZHENGBIN (CN)
REN CHUANBO (CN)
LV NANA (CN)
GUO ZHENGBIN (CN)
REN CHUANBO (CN)
Application Number:
PCT/CN2017/086616
Publication Date:
May 31, 2018
Filing Date:
May 31, 2017
Export Citation:
Assignee:
UNIV SHANDONG TECHNOLOGY (CN)
International Classes:
B60W10/10; B60L15/00; F16H59/02
Foreign References:
| CN106481803A | 2017-03-08 | |||
| CN104389997A | 2015-03-04 | |||
| CN101590852A | 2009-12-02 | |||
| CN103775623A | 2014-05-07 | |||
| CN102295000A | 2011-12-28 | |||
| US20150000450A1 | 2015-01-01 |
Attorney, Agent or Firm:
BEIJING GAOWO LAW FIRM (CN)
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