Investigation of Slow-Active Suspension System’s Non-linearity on The Performance of The Anti-lock Brake System
Onsy, A., Sharaf, A., Ashry, M., El-demerdash, S. (2015). Investigation of Slow-Active Suspension System’s Non-linearity on The Performance of The Anti-lock Brake System. EKB Journal Management System, 16(AEROSPACE SCIENCES & AVIATION TECHNOLOGY, ASAT - 16 – May 26 - 28, 2015), 1-15. doi: 10.21608/asat.2015.22930
A. M. Onsy; A. M. Sharaf; M. M. Ashry; S. M. El-demerdash. "Investigation of Slow-Active Suspension System’s Non-linearity on The Performance of The Anti-lock Brake System". EKB Journal Management System, 16, AEROSPACE SCIENCES & AVIATION TECHNOLOGY, ASAT - 16 – May 26 - 28, 2015, 2015, 1-15. doi: 10.21608/asat.2015.22930
Onsy, A., Sharaf, A., Ashry, M., El-demerdash, S. (2015). 'Investigation of Slow-Active Suspension System’s Non-linearity on The Performance of The Anti-lock Brake System', EKB Journal Management System, 16(AEROSPACE SCIENCES & AVIATION TECHNOLOGY, ASAT - 16 – May 26 - 28, 2015), pp. 1-15. doi: 10.21608/asat.2015.22930
Onsy, A., Sharaf, A., Ashry, M., El-demerdash, S. Investigation of Slow-Active Suspension System’s Non-linearity on The Performance of The Anti-lock Brake System. EKB Journal Management System, 2015; 16(AEROSPACE SCIENCES & AVIATION TECHNOLOGY, ASAT - 16 – May 26 - 28, 2015): 1-15. doi: 10.21608/asat.2015.22930

Investigation of Slow-Active Suspension System’s Non-linearity on The Performance of The Anti-lock Brake System

International Conference on Aerospace Sciences and Aviation Technology
Article 38, Volume 16, AEROSPACE SCIENCES & AVIATION TECHNOLOGY, ASAT - 16 – May 26 - 28, 2015, May 2015, Page 1-15  XML PDF (469.4 K)
Document Type: Original Article
DOI: 10.21608/asat.2015.22930
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Authors
A. M. Onsy1; A. M. Sharaf2; M. M. Ashry3; S. M. El-demerdash4
1PhD Student, Automotive Engineering Dept., Military Technical College.
2Associate Professor, Head of Automotive Engineering Dept., Military Technical College.
3Associate Professor, Optoelectronics Dept., Military Technical College, Cairo, Egypt.
4Professor, Helwan University, Faculty of Engineering and Technology, Mataria, Cairo, Egypt.
Abstract
This paper presents an advanced integrated controller design for military vehicle slow-active suspension system and anti-lock brake system (ABS) considering the effect of the suspension components non-linearity on the braking dynamics. The presented investigation is applied to a quarter vehicle model using the Magic Formula tire model and the actual characteristics for suspension damper (throttle valve) and spring (gas spring). The suspension controller is designed based on LQR using a linearized vehicle model and the ABS controller is designed based on ON/OF control methodology using tire skid ratio of 15% as a reference value. The mathematical derivations as well as the control techniques are numerically implemented in MATLAB environment. Several simulation results are carried out considering typical performance measures such as stopping time, stopping distance and vehicle body vertical acceleration. The results illustrated that, the integrated controller reduces the stopping distance on different road surfaces and therefore improves the braking performance to avoid or reduce the impact of vehicle accident.
Keywords
Slow-active suspension; Anti-lock braking system; Vehicle dynamics and control
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