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A modified structure internal model robust control method for the integration of active front steering and direct yaw moment control

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Science China(Technological Sciences) 2015年第1期58卷 75-85页

作者： WU Jian ZHAO YouQun JI XueWu LIU YaHui YIN ChengQiang Department of Automotive Engineering College of Energy and Power Engineering Nanjing University of Aeronautics and Astronautics School of Mechanical and Automotive Engineering Liaocheng University State Key Laboratory of Automotive Safety and Energy Tsinghua University

Taking into account the nonlinearity of vehicle dynamics and the variations of vehicle parameters,the integrated control strategy for active front steering(AFS)and direct yaw control(DYC)that can maintain the performance and robustness is a key issue to be ***,the H∞method is widely applied to the integrated control of chassis dynamics,but it always sacrifices the performance in order to enhance the *** modified structure internal model robust control(MSIMC)obtained by modifying internal model control(IMC)structure is proposed for the integrated control of AFS and DYC to surmount the conflict between performance and *** lane change(DLC)simulation is developed to compare the performance and the stability of the MSIMC strategy,the PID controller based on the reference vehicle model and the H∞*** results show that the PID controller may oscillate and go into instability in severe driving conditions because of large variations of tire parameters,the H∞controller sacrifices the performance in order to enhance the stability,and only the MSIMC controller can both ensure the robustness and the high performance of the integrated control of AFS and DYC.

关键词： modified structure internal model control robust control chassis integrated control double lane change

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Quantification of Ride Comfort Using Musculoskeletal Mathematical Model Considering Vehicle Behavior

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Computer Modeling in Engineering & Sciences 2023年第6期135卷 2287-2306页

作者： Junya Tanehashi Szuchi Chang Takahiro Hirosei Masaki Izawa Aman Goyal Ayumi Takahashi Kazuhito Misaji Graduate Student Graduate School of Industrial TechnologyNihon UniversityChiba275-8575Japan Hitachi Astemo Ltd.Tochigi321-3325Japan Former Graduate Student Graduate School of Industrial TechnologyNihon UniversityChiba275-8575Japan College of Industrial Technology Nihon UniversityChiba275-8575Japan

This research aims to quantify driver ride comfort due to changes in damper characteristics between comfort mode and sport mode,considering the vehicle’s inertial *** comfort of riding in an automobile has been evaluated in recent years on the basis of a subjective sensory evaluation given by the ***,reflecting driving sensations in design work to improve ride comfort is abstract in nature and difficult to express ***,we evaluated the human body’s effects while driving scientifically by quantifying the driver’s behavior while operating the steering wheel and the behavior of the automobile while in motion using physical *** this end,we collected driver and vehicle data using amotion capture system and vehicle CAN and IMU *** also constructed a three-dimensional musculoskeletal mathematical model to simulate driver movements and calculate the power and amount of energy per unit of time used for driving the joints and muscles of the human ***,we used comfort mode and sport mode to compare damper characteristics in terms of *** comfort mode,damper characteristics are soft and steering stability is mild,but vibration from the road is not easily transmitted to the driver making for a lighter load on the *** sport mode,on the other hand,damper characteristics are hard and steering stability is comparatively ***,vibration from the road is easily transmitted to the driver,whichmakes it easy for a load to be placed on the *** a result of this comparison,it was found that a load was most likely to be applied to the driver’s *** result in relation to the neck joint can therefore be treated as an objective measure for quantifying ride comfort.

关键词： Human engineering biomechanics driver’s sense of fatigue double lane change musculoskeletal mathematical model

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Analysis of the Effect of Trailer Tire Size on the Articulated Vehicle’s Stability

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Journal of Applied Mathematics and Physics 2023年第8期11卷 2343-2360页

作者： Glenn Xavier Vaz Zeinab El-Sayegh Department of Automotive and Mechatronics Engineering Ontario Tech University Oshawa Canada

This research paper aims to identify the effect of tire size on the handling characteristics of a trailer attached to a vehicle. In various stability tests, different models with different tires from the market were tested. A successful outcome of this research would generate an efficient tire selection process and improve the handling of a trailer attached to a vehicle while maximizing fuel efficiency. In this study, different accurate tire models using the magic formula were developed in vehicle dynamics modelling and simulation software. These models were then simulated on on-road conditions to predict vehicle and trailer behaviour under different conditions within the software. Two distinct tests were conducted, the J-Turn test and the double lane change test. The results of these tests were used to evaluate the handling characteristics and decide on a better tire size for the trailer attached to the vehicle.

关键词： Trailer-Vehicle Slip Angle Lateral Forces Lateral Acceleration J-Turn double lane change

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