On the intelligent slope 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.

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Fuel Control Systems for Planetary Transmission Vehicles: A Contribution to the LPG-fueled Vehicles Community

Mechanical Engineering for Society and Industry ◽

10.31603/mesi.5263 ◽

2021 ◽

Vol 1 (1) ◽

pp. 14-21

Author(s):

Suroto Munahar ◽

Bagiyo Condro Purnomo ◽

Hasan Köten

Keyword(s):

Control System ◽

Control Systems ◽

Automatic Transmission ◽

Slope Angle ◽

The Road ◽

Automatic Transmissions ◽

Additional Control ◽

Long Time ◽

Planetary Transmission ◽

Road Slope

The bi-fuel system vehicle (gasoline/LPG) has been developed for a long time because it has the ability to switch fuels, both built as an original equipment manufacturer (OEM) or as a modified vehicle. However, on vehicles with planetary automatic transmissions, additional control systems are needed to produce optimal performance, both on gasoline and LPG operations, especially on uphill roads. Old vehicles with planetary automatic transmissions are not equipped with road slope angle sensors, so on uphill roads and the driver has not mastered road conditions, the engine tends to stop suddenly. Therefore, this study aims to develop a fuel control system (LPG operation) on a planetary automatic transmission to control gear shifts based on the level of the road slope. A simulation with MATLAB Simulink we used to create a control system, with objective function and constraint defined. As a result, the control system can recognize the level of the road slope to control the speed gear shift. This control system is promising and reliable to be implemented in real conditions.

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Love Story (1950s)

The Man Who Saw Tomorrow ◽

10.7551/mitpress/9780262037532.003.0005 ◽

2018 ◽

pp. 65-92

Author(s):

Lillian Hoddeson ◽

Peter Garrett

Keyword(s):

Nerve Cell ◽

Automatic Transmission ◽

State University ◽

Electric Power Steering ◽

Love Story ◽

Automotive Components ◽

Power Steering ◽

Wayne State University ◽

The Rich ◽

Research Director

In late 1951, Ovshinsky moved to Detroit, where as research director at Hupp Corporation he invented improved automotive components, including electric power steering and an electrical automatic transmission. In 1954 he and his brother Herb Ovshinsky started their company General Automation, where their most important inventions were new kinds of switches. Meanwhile, Ovshinsky’s personal life was transformed when he and Iris Dibner fell in love and planned to eventually marry and work together. With Iris’s encouragement, Ovshinsky extended his cybernetic interest to studying neurophysiology, performing research on nerve cells at Wayne State University. These studies resulted in his invention of an electrochemical switch he named the Ovitron, based on an analogy with the mechanism of a nerve cell. This nerve-cell analogy was pivotal for Ovshinsky: it oriented him to the rich possibilities of working with amorphous and disordered materials, which at that time most physicists dismissed as “dirt materials.”

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Integrated Control and Coordination of Vehicle System Dynamics

Volume 6: ASME Power Transmission and Gearing Conference; 3rd International Conference on Micro- and Nanosystems; 11th International Conference on Advanced Vehicle and Tire Technologies ◽

10.1115/detc2009-86096 ◽

2009 ◽

Author(s):

Hansong Xiao ◽

Wuwei Chen ◽

Changbao Chu ◽

Jean W. Zu

Keyword(s):

Control Systems ◽

Lower Layer ◽

Integrated Control ◽

Hierarchical Control ◽

Motor Vehicles ◽

Electric Power Steering ◽

Braking Performance ◽

Power Steering ◽

Chassis Control ◽

And Performance

Current and future motor vehicles are incorporating more and more sophisticated chassis control systems to improve vehicle handling, stability and comfort. These control systems often operate independently and thus interactions and performance conflicts among the control systems occur inevitably. To address the problem, this study proposes a two-layer hierarchical control architecture for integrated control of electric power steering (EPS) system and anti-lock brake system (ABS). The upper layer controller is designed to coordinate the interactions between the EPS system and the ABS. While in the lower layer, the two controllers including the EPS system and the ABS, are designed independently to achieve their local control objectives. Simulation results show that the proposed hierarchical control system is able to improve the vehicle lateral stability, and at the same time ensure the vehicle steering agility, and the braking performance.

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