An improved smooth shift strategy for clutch mechanism of heavy tractor semi-trailer automatic transmission

2022 ◽  
Vol 121 ◽  
pp. 105040
Author(s):  
Tiancheng Ouyang ◽  
Yucai Lu ◽  
Shuoyu Li ◽  
Rui Yang ◽  
Peihang Xu ◽  
...  
Keyword(s):  
Automatic Transmission ◽  
Shift Strategy ◽  
Clutch Mechanism

Study on Shift Schedule of Pure Electric Vehicles Automatic Transmission

2012 ◽  
Vol 591-593 ◽  
pp. 1212-1216 ◽  
Author(s):  
Kang Huang ◽  
Min Liang Yan ◽  
Zhao Wang ◽  
Dan Dan Zhu
Keyword(s):  
Electric Vehicle ◽  
Electric Vehicles ◽  
Design Method ◽  
Automatic Transmission ◽  
Average Speed ◽  
Vehicle Simulation ◽  
Urban Road ◽  
Shift Schedule ◽  
Shift Strategy ◽  
Simulation Results

This paper puts forward a research design method of pure electric vehicle automatic transmission shift schedule based on the urban road conditions in connection with the problems of the low average speed, the high percentage of idle, and frequently shifting in pure electric vehicle. In order to improve the performance of pure electric vehicle automatic transmission and the using efficiency of the motor, this paper formulates a fuzzy shift schedule in the view of the economy. At the same time, this paper supplies a vehicle simulation in the view of economy through a application instance and the MATLAB / SIMULINK / ADVISOR software. The simulation results show that the fuzzy shift strategy can meet the requirements of the economy very well.

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

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.

On the intelligent slope shift strategy

2007 ◽  
Vol 221 (8) ◽  
pp. 991-999 ◽  
Author(s):  
Hui Jin ◽  
Anlin Ge
Keyword(s):  
Control Systems ◽  
Automatic Transmission ◽  
Vehicle Control ◽  
Management Systems ◽  
Recognition Method ◽  
Electric Power Steering ◽  
Power Steering ◽  
Shock Absorbers ◽  
Automatic Transmissions ◽  
Shift Strategy

The vehicle longitudinal dynamics was investigated and a slope recognition method based on reference tables was proposed, to overcome the problems encountered when a vehicle with conventional automatic transmission travels on slopes. Shift strategies on uphill and downhill slopes were also developed. The intelligent slope shift strategy is significant because it can improve the performance on slopes of not only conventional automatic transmissions, but also many other vehicle control systems, such as engine management systems, electric power steering, and shock absorbers.

Research on Intelligent Shift Strategy of Automatic Transmission

2014 ◽  
Vol 988 ◽  
pp. 586-589
Author(s):  
Guo Xin Zhang ◽  
Min Li ◽  
Xia Wei
Keyword(s):  
Decision Problem ◽  
Automatic Transmission ◽  
Control Technology ◽  
Shift Strategy ◽  
Driving Condition

The control technology of automatic transmission is mainly to solve the decision problem of shift strategy, namely according to the factors of intention of the driver, vehicle running state, road conditions and the principle of the optimal vehicle performances, determine the best gear. This paper mainly studies shift strategy under different driver intention, different driving condition of the vehicle, different use of vehicle.

scholarly journals Shift Strategy Optimization for Automatic Transmission of Heavy Trucks Based on Dynamic Programming Algorithm

2021 ◽  
Vol 11 (12) ◽  
pp. 5555
Author(s):  
Heng Zhang ◽  
Xinxin Zhao ◽  
Jue Yang ◽  
Weiwei Yang
Keyword(s):  
Dynamic Programming ◽  
Fuel Consumption ◽  
Automatic Transmission ◽  
Dynamic Programming Algorithm ◽  
Transmission Model ◽  
Programming Algorithm ◽  
Engine Fuel ◽  
Work Cycle ◽  
Shift Strategy ◽  
Two Parameter

The shift strategy of automatic transmission plays a vital role in the smoothness and economy of heavy-duty mining trucks. In this paper, an engine fuel consumption model, a 6 + 2 speed automatic transmission model, and a vehicle resistance model are built in MATLAB. Combined with the development of smart mining technology, the traditional two-parameter economic shift strategy is corrected based on vehicle load and road slope. The dynamic programming optimization algorithm is used to extract the best economical shift strategy under known working conditions to reduce the fuel consumption and the number of shifts. Finally, simulation experiments of the optimized shift strategy by dynamic programming in a typical mine work cycle are carried out. The simulation results show that the engine speed and output torque are maintained in a relatively stable and efficient working range by using the proposed shift strategy. Compared with the traditional two-parameter shift strategy, dynamic programming has advantages in reducing fuel consumption and shift numbers.

Sign in / Sign up

Export Citation Format

Share Document