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Due to the more demanding quality requirements for the vehicle manipulating comfort imposed by the market in recent years, the driver's feeling during gear shifting has become very important in the design stage of the shifting systems. This paper combines the ergonomics theory with the vehicle shifting device, and expounds the application and practice of the ergonomics in the innovative design of the vehicle shifting device. Firstly, GSA analysis system is used to pre-evaluate the static and dynamic shifting performance of the whole vehicle, and analyzes the shifting device of the vehicle transmission according to ergonomics theory. And then the corresponding improvement measures are put forward for the existing defects in the shifting device. Finally, the post-test analysis is carried out to verify the effectiveness in improving the driving experience of the whole vehicle, and ultimately enhance the competitiveness of the studied shifting device in the vehicle industry.

In this paper, a model-based nonlinear gearshift controller is designed by the backstepping method to improve the shift quality of vehicles with a dual-clutch transmission (DCT). Considering easy-implementation, the controller is rearranged into a concise structure which contains a feedforward control and a feedback control. Then, robustness of the closed-loop error system is discussed in the framework of the input to state stability (ISS) theory, where model uncertainties are considered as the additive disturbance inputs. Furthermore, due to the application of the backstepping method, the closed-loop error system is ordered as a linear system. Using the linear system theory, a guideline for selecting the controller parameters is deduced which could reduce the workload of parameters tuning. Finally, simulation results and Hardware in the Loop (HiL) simulation are presented to validate the effectiveness of the designed controller., (Copyright © 2014 ISA. Published by Elsevier Ltd. All rights reserved.)