In order to give full pay to the advantages of rapid torque response and independent controllable torque of the distributed driven electric vehicle, this paper adopted the chassis stability coordination control method, through the coordinated control of the electronic stability control system and the torque vector control unit to deal with the stability requirements of the vehicle under various working conditions-improve the dynamic performance of the vehicle under stable conditions through TVCU independent control, ensures the power and stability of the vehicle by ESC when it tends to be unstable. The robustness of the stability coordination control method was verified based on a real vehicle.

In the semantics mapping construction of Simultaneous Localization And Mapping (SLAM) algorithm, to solve the problem that the semantics information extracted by using deep learning technology contains noise, this paper proposes a representation method for semantic observation by probabilistic grid. The influence of noise is reduced by grid matching and probability updating, in this way, a clear map can be incrementally constructed without auxiliary means like features matching. The effectiveness of the proposed method is verified by experiments in which clear zebra crossings and lane lines are contained in the constructed map.

Based on a 200 kW peak power three-stack common-rail Proton Exchange Membrane Fuel Cell (PEMFC), the steady Computational Fluid Dynamics (CFD) iterative calculation between the single pulse valve ejector and the multi-stack common-rail pulse valve ejector under and hydrogen supply system was carried out by Fluent software, and the ejector scheme was determined. Then the reliability of the design and simulation was verified by the ejector bench test. The influence factors of pulse valve ejector were simulated and analyzed, from which we can know that with the same pressure variation, the injection pressure of secondary flow has the greatest influence on the ejection coefficient, followed by the inlet pressure, and the injection pressure has the least influence. Meanwhile, nitrogen content has great influence on the ejection coefficient. Finally, the transient simulation analysis of the pulse valve ejector was carried out. The results show that, compared with the steady state results, the ejection coefficient calculated under transient state has a large margin, so it can further cover the low power condition. Keeping the duty cycle unchanged and increasing injection frequency are beneficial to the improvement of ejection coefficient.

To shorten the development cycle of Dedicated Hybrid Transmission (DHT), the Hardware In the Loop (HIL) simulation platform was built to perform the virtual calibration of the electric control parameters for DHT. The obtained calibration dataset was compared with the conventional calibration data of real vehicle. The results show that the calibration data obtained from virtual calibration method is similar to that obtained from conventional method, can shorten vehicle development cycle effectively.

In order to recognize driving fatigue, this paper proposed a fatigue detection method based on wavelet characteristics and Long Short-Term Memory (LSTM) neural network classifier. Two kinds of EEG signals (non-fatigue and driving fatigue) were collected in the real driving environment. The EEG signals were decomposed by wavelet, and the statistical values, energy values and relative energy values of four wavelet coefficients were calculated as the characteristic data, which were used for classification training and test of the LSTM neural network. The results of experiment show that the classification performance of LSTM neural network gradually improves with the increase of the number of channels involved in constructing characteristic data. Especially, in the scheme of 14 channels, the average classification accuracy is about 96.1%.

In order to satisfy the requirement of experiment and verification of vehicle platooning research, a vehicle with driving assistance function was designed, and an extensible and multi-scenario switchable vehicle platooning experimental platform was developed. The platooning vehicles are controlled horizontally by pure tracking algorithm based on visual perception and vertically by cooperative adaptive cruise based on millimeter wave. Hardware system architecture of the platooning experimental platform is built based on vehicles with driving assistance function, and vehicle role and function scene element from the software system are used to realize extension and multi-scenario switch of vehicle platooning. Finally, vehicle platooning experimental platform was established based on three minicars, function and performance test were conducted. The results show that this platooning experimental platform has function including vehicle queuing, vehicle platoon forming, and vehicle platoon driving steadily, with good control effect.

To address the issue of the increase of unsprung mass and suspension parameters needing adjustment after upgrading a central motor electric vehicle to a wheel hub motor car, a half-car passive suspension model was established in MATLAB/Simulink. The spring stiffness and damping coefficients of the front and rear suspensions were taken as independent variables, while the root mean square values of the vehicle’s center of gravity acceleration, pitch angle acceleration, suspension deflection, and tire dynamic load were considered as optimization objectives. The grey wolf optimization algorithm was employed to search for the optimal stiffness and damping parameters. The simulation results show that after optimization, the handling stability of the suspension remains within a reasonable range, while the comfort level is improved by 12.73%.

For the problem that it is difficult to determine the influence of the opening size of automobile electric sunshade on the operating performance, this paper, by analyzing the structure of the electric sunshade and the basic motion parts in detail in the process of unrolling and winding of the sunshade, obtained the relationship between the stress state and the position of the sunshade in the motion process, thus established a mathematical expression of the system resistance and its opening size of the sunshade. The calculation data of the design sunshade is compared with the measurement data of the real sample, which show that, the calculated data of the sunshade model is basically consistent with the measured data of the real sample, verifying the effectiveness of the mathematical model of the sunshade system resistance.