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Taking the five-link suspension of a car as the subject investigated on the basis of ADAMS/Car, this paper builds the parameterized mode of the multi-link suspension. The simulation shows the influence relations among multi-link suspension structure parameter and the wheel location parameter, wheel track, roll center. On the base of this, aim for improving the ride safety and comfort, multi-link suspension optimization model is built and carried out parameter optimization design by using ADAMS/Insight. The result shows that this method is high-performance and can be used in the design of multi-link suspension conveniently.

Aiming at the problem of braking shock caused by the inconsistent response time of the inner motor (IM), the outer motor (OM) and the hydraulic brake when the regenerative braking mode of dual-rotor in-wheel motor (DRIWM) is switched, this paper proposes a U-shaped transition coordinated control strategy for the DRIWM. Ensure that the total braking torque can be smoothly transitioned when any one or more of the hydraulic braking torque, the braking torque of the IM and the braking torque of the OM enter/exit braking. The dynamic model of electric vehicle (EV) with DRIWMs is established, the division of braking mode is based on the principle of optimal DRIWM system efficiency, and the U-shaped transition coordinated controller of DRIWM is designed. Finally, two cases of switching the IM single braking mode to hydraulic braking mode and OM and hydraulic coordinated braking mode switching to compound braking mode are taken as examples to verify.

In China, although overload phenomena are serious and effective transportation management is urgently demanded, equipment mainly used to check overloads is platform scales for static weighing. To develop an effective and economical Weigh-In-Motion (WIM) system is imperative in China. With this awareness, we presented a new technology, using high-pressure oil pipe as the sensor of the WIM system. By acquiring and analyzing the pressure signals when vehicles run over the pipe, the wheel loads, axel loads and gross weight can be got. In this paper, the static characteristics and dynamic characteristics of the oil pipe have been researched, and the system's hardware and software were developed. Considering complicated characteristic of the oil pipe and other factors effecting WIM precision, we used neural networks to scale the WIM system dynamically. Test results showed that precision can satisfy the requirement of actual application.

In order to improve the driving safety, an integrated brake system of trailers is proposed, which can solve the problems of insufficient braking force and poor stability when braking. This system realizes the integration of the main braking system and the auxiliary braking system of articulated vehicles, thus avoiding the phenomenon of "folding" and "rollover" during braking. The integrated brake system developed in this paper is mainly composed of friction braking system and electromagnetic braking system. First, the design scheme for the integrated brake system was illustrated based on the system’s working principle and structures. After that, the mathematical model of electromagnetic braking system was derived based on electromagnetic theory. Then, the electromagnetic braking system was simulated by CAE technology, while the magnetic density distribution and braking torque value were studied.