A Study on the Quantitative Assessment Method for Shift Quality of Automatic Transmission in a Wheel Loader

The quantitative classification of transformer supervision can improve the quality of transformer supervision. For the contents of transformer supervision, this paper establishes an index system of transformer supervision. Example results show that the extension matter-element theory which is applied to transformer supervision quantitative evaluation is more reasonable. According to the categories of transformer supervision, this paper quantifies the uncertainty and builds the evaluation system of transformer supervision. It realizes the evaluation of transformer supervision and gets the key factors which influence the transformer supervision. This evaluation system is conducive to guide the transformer supervision to be more scientific and effective.

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A Study on Evaluation Method and Improvement of Shift Quality of Automatic Transmission

10.4271/930673 ◽

1993 ◽

Cited By ~ 4

Author(s):

Toshitaka Naruse ◽

Yasuhiro Nakashima ◽

Yasuhiro Murayama ◽

Yasuji Akiyoshi ◽

Tamotsu Kurachi

Keyword(s):

Evaluation Method ◽

Automatic Transmission ◽

Shift Quality

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Prediction of the Life of Friction Material and Shift Quality of an Automatic Transmission

10.4271/860385 ◽

1986 ◽

Cited By ~ 2

Author(s):

Hiromichi Nakata ◽

Shuzo Moroto ◽

Kouji Kobayashi

Keyword(s):

Automatic Transmission ◽

Friction Material ◽

Shift Quality

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Influence of a clutch control current profile to improve shift quality for a wheel loader automatic transmission

International Journal of Precision Engineering and Manufacturing ◽

10.1007/s12541-017-0027-2 ◽

2017 ◽

Vol 18 (2) ◽

pp. 211-219 ◽

Cited By ~ 6

Author(s):

Joo-young Oh ◽

Jin-young Park ◽

Jung-woo Cho ◽

Jeong-gil Kim ◽

Jae-hoon Kim ◽

...

Keyword(s):

Automatic Transmission ◽

Current Profile ◽

Wheel Loader ◽

Shift Quality ◽

Control Current ◽

Clutch Control

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Study of Objective Assessment Indexes of Shuttle Shift Quality of Wheel Loader

IOP Conference Series Materials Science and Engineering ◽

10.1088/1757-899x/490/5/052021 ◽

2019 ◽

Vol 490 ◽

pp. 052021

Author(s):

Haoyue Zhu ◽

Chang Lv ◽

Yanhui Liu

Keyword(s):

Objective Assessment ◽

Wheel Loader ◽

Shift Quality

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Modelling and simulation of a fuzzy controller of automatic transmission of a tracked vehicle in complicated driving conditions

Proceedings of the Institution of Mechanical Engineers Part D Journal of Automobile Engineering ◽

10.1243/09544070jauto335 ◽

2007 ◽

Vol 221 (10) ◽

pp. 1259-1272

Author(s):

J Yi ◽

X-L Wang ◽

Y-J Hu ◽

C-G Li

Keyword(s):

Fuzzy Controller ◽

Automatic Transmission ◽

Closed Loop System ◽

Tracked Vehicle ◽

Shift Quality ◽

Shift Control ◽

Shift Strategy ◽

Cross Country ◽

Driving Conditions

Based on a human-vehicle-road closed-loop system of vehicle steering parameter, road surface status, and driver manipulating information, the primary principle of fuzzy intelligent shift control of a tracked vehicle is proposed and the simulation model of a drivetrain is established to adapt the automatic transmission to the complex driving conditions of a tracked vehicle. Using the fuzzy control theory, an intelligent fuzzy shift control system composed of a basic fuzzy shift strategy and a fuzzy modification module is developed to improve the dynamic characteristics and cross-country manoeuvrability. The simulation result shows that the fuzzy shift strategy can improve the shift quality of a tracked vehicle under manifold driving conditions and avoid shift cycling effectively, therefore proving that the intelligent fuzzy shift strategies are better.

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Synchroniser control with proportional pressure reducing valves and displacement feedback

Proceedings of the Institution of Mechanical Engineers Part D Journal of Automobile Engineering ◽

10.1177/09544070211004463 ◽

2021 ◽

pp. 095440702110044

Author(s):

Wei Wu ◽

Junlin Luo ◽

Jibin Hu ◽

Shihua Yuan ◽

Bingqing Xiao

Keyword(s):

Control System ◽

Automatic Transmission ◽

Back Pressure ◽

Chamber Pressure ◽

Loop Control ◽

Shift Quality ◽

Electrohydraulic System ◽

Engagement Process ◽

Engagement And Disengagement

In order to improve the shift quality of automatic transmission with synchroniser, a synchroniser electrohydraulic control system equipped with the proportional pressure reducing valves is proposed. The principle of the control system is introduced in detail. The PID controller is used to realise closed-loop control of shift displacement to achieve the synchronisation. A numerical model and a test apparatus have built up to validated the control performance. The simulated and measured engagement and disengagement of the synchroniser with the proposed control system are investigated in detail. The results indicate that the shift displacement is controllable by changing the cylinder chamber pressure. The back pressure value is useful for a smooth synchroniser operation. It is determined by the sleeve motion and the throttle parameter. The back pressure affects little on the synchronisation stage during the engagement process. The proposed method can be used for the optimising design of the electrohydraulic system for the synchroniser control.

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