Improving the directional stability of a traction control system without additional sensors

The traction control system (TCS) comprises a slip control subsystem and a directional stability subsystem. The slip controller can enhance the traction performance by maintaining the slip ratio within an appropriate range. Additional information about the lateral behaviour of the vehicle is necessary to enhance the directional stability during cornering or lane change on slippery roads. With an assumption of slowly varying steering input, a new method to measure the mixture of yaw rate and lateral acceleration, using the speed difference of non-driven wheels, is proposed. Using this measurement, the controller imposes independent pressure to each driven wheel and improves the stability during cornering on slippery roads or acceleration on split-μ roads without additional sensors such as yaw rate and lateral acceleration sensors. The proposed method is verified through simulation based on a 15-degrees-of-freedom (15 DOF) passenger car model.

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The sliding mode control for traction control system based on variable optimal slip ratio

2012 First National Conference for Engineering Sciences (FNCES 2012) ◽

10.1109/nces.2012.6543947 ◽

2012 ◽

Author(s):

Jian Zhao ◽

Jin Zhang ◽

Bing Zhu

Keyword(s):

Control System ◽

Sliding Mode Control ◽

Sliding Mode ◽

Slip Ratio ◽

Traction Control ◽

Traction Control System ◽

Mode Control ◽

Optimal Slip Ratio

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The Sliding Mode Control for Traction Control System Based on Variable Optimal Slip Ratio

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.380-384.485 ◽

2013 ◽

Vol 380-384 ◽

pp. 485-490

Author(s):

Jian Zhao ◽

Jin Zhang ◽

Bing Zhu

Keyword(s):

Control System ◽

Sliding Mode Control ◽

Control Method ◽

Sliding Mode ◽

Road Surface ◽

Information Measurement ◽

Slip Ratio ◽

Traction Control ◽

Traction Control System ◽

Mode Control

In this paper, the concept of intelligent tire and road surface information measurement methods are introduced, and the sliding mode algorithm for traction control system based on intelligent tire is proposed. By applying braking torque onto the driving wheels, the slip rates are adjusted to maintain within the optimal region on different road surface, and the optimal longitudinal traction is achieved. According to the simulation results on the CARSIM and MATLAB co-simulation platform of several working conditions, the TCS based on sliding mode control method improves the traction performance on different road surface effectively.

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A Study of Coordinated Vehicle Traction Control System Based on Optimal Slip Ratio Algorithm

Mathematical Problems in Engineering ◽

10.1155/2016/3413624 ◽

2016 ◽

Vol 2016 ◽

pp. 1-10 ◽

Cited By ~ 2

Author(s):

Gang Liu ◽

LiQiang Jin

Keyword(s):

Control System ◽

Control Strategy ◽

Control Method ◽

Road Surface ◽

Vehicle Model ◽

Slip Ratio ◽

Traction Control ◽

Traction Control System ◽

Optimal Slip Ratio ◽

Vehicle Acceleration

Under complicated situations, such as the low slippery road surface and split-μroad surface, traction control system is the key issue to improve the performance of vehicle acceleration and stability. In this paper, a novel control strategy with engine controller and active pressure controller is presented. First and foremost, an ideal vehicle model is proposed for simulation; then a method for the calculation of optimal slip ratio is also brought. Finally, the scheme of control method with engine controller and active brake controller is presented. From the results of simulation and road tests, it can be concluded that the acceleration performance and stability of a vehicle equipped with traction control system (TCS) can be improved.

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