System Analysis and Robust Anti-Jerk Control in Elastic All-Wheel Drive of an Electric Car

Motivation and Objectives

Oscillatory properties due to elastic characteristic of drive shafts in automobiles are well known for posing the risk of structural instability in drive shafts and hence inevitably the dramatic deterioration of the overall performance in drive systems as well as in various related control and navigation tasks. Hazardous rotation oscillation is even more distinctive in elastic electrical all-wheel drive since electric engine is much more sensitive and susceptible to disturbances such as gear rattling during load inverse in traction control. This problematic therefore poses a challenge for a novel control design approach which has to guarantee the performance of the various presently incorporated traction control strategies by prevention of possible disastrous drive oscillations.

Methods

• Analysis of the Eigen-behavior of the oscillatory properties in various operating conditions and verification with corresponding measurements
• Characterization of disturbances caused by nonlinearities such as gear mesh, frictions and etc.
• Mathematical modeling of the dynamical behavior of wheel drives with related actuator dynamics
• Model based anti-jerk control design approaches and simulations for verification
• Scaled test bench for functions verification through implementation on an extracted electric wheel drive

Project Duration

06/2011 - 06/2014

Contact

Khang Zhun Yeap