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Vehicle Ride Comfort Based on Matching suspension system

Chinese Journal of Mechanical Engineering 2011年第2期24卷 271-276页

作者： SHI Jianpeng State Key Laboratory of Automobile Dynamic Simulation Jilin University Changchun 130025 China Technical Center Dongfeng Motor Corporation Wuhan 430056 China

The existing investigations of vehicle ride comfort mainly include motion characteristics analysis based on creating a multi-body dynamic simulation model,and the parameters analysis to improve the suspension control for the *** the study of creating multi-body dynamics simulation models,there is usually without considering calibration and test verification,which make it difficult to ensure the production of *** the study of improving the suspension control parameters for the target,there is a lack of systematic match about comfortable and human characteristics,so it is difficult to implement in the field of driving and leading the vehicle *** this paper,based on the different characteristic of suspension system that effects on the vehicle ride comfort, according to the suspension system dynamic mechanism,the research methods of vehicle road test,bench test and CAE simulation is used,at the same time,several sensitivity analysis of vehicle ride comfort related to suspension stiffness and damping and speed is made. As a result,the key suspension systematic parameters are given that have important impact on vehicle ride *** matching parameters,a calibration analysis of suspension system based on human comfort is *** analysis results show that the analysis methods for the design target of making the vehicle with best comfort are *** the basis of the theory study,five suspension parameter matching principles are explored to promise the vehicle with perfect ride comfort,which also provide theoretical basis and design methods for the passenger car best match of suspension system stiffness and *** research results have the promotional value of practicability and a wide range of engineering application.

关键词： automobile vehicle ride comfort suspension system matching

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Electrorheological Damper and Its Application for Semi-Active suspension system

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Journal of Beijing Institute of Technology 2007年第1期16卷 9-12页

作者：赵霞张永发 School of Science Beijing Institute of Technology Beijing 100081 China

A semi-active control of vehicle suspension system with eleetrorheolngieal （ER） damper is presented. ER fluid characteristics are introduced based on the Bingham plasticity model first. Then ER damper working force is given. Finally a quarter car model with ER damper is constructed. The skyhook control strategy is adopted to simulate the amplitude-frequency characteristics and the vibration of suspension system under random road excitation on the basis of ER damper characteristics. The response curves of the vertical acceleration, the suspension dynamic working space and the tyre dynamic loading are obtained. Simulation results show that the acceleration is reduced effectively and then the ride comfort is improved by the skyhook control law.

关键词： dectrorheological(ER) fluid ER damper suspension system semi-active control skyhook control

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Analyses and Simulation of Fuzzy Logic Control for suspension system of a Track Vehicle

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Journal of Beijing Institute of Technology 2008年第2期17卷 164-167页

作者：于杨魏雪霞张永发 School of Science Beijing Institute of Technology

The vibration caused by terrible road excitation affects the ride quality and safety of track vehicles. The vibration control of suspension systems is a very important factor for modern track vehicles. A fuzzy logic control for suspension system of a track vehicle is presented. A mechanical model and a system of difft, rential equations of motion taking account of the mass of loading wheel are established. Then the fuzzy logic control is applied to control the vibration of suspension system of track vehicles for sine signal and random road surfaces. Numerical simulation shows that the maximum acceleration of suspension system can be reduced to 44 % of the original value for sine signal road surface, and the mean square root of acceleration of suspension system can be reduced to 21% for random road surface. Therefore, the proposed fuzzy logic control is an efficient method for the suspension systems of track vehicles.

关键词： suspension system track vehicle vibration fuzzy logic control numerical simulation

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Model Aerodynamic Tests with a Wire-driven Parallel suspension system in Low-speed Wind Tunnel

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Chinese Journal of Aeronautics 2010年第4期23卷 393-400页

作者：肖扬文林麒郑亚青梁斌厦门大学航空系厦门361005 华侨大学机电及自动化学院泉州362021 中国电信深圳分公司深圳518034

Owing to the advantages of wire-driven parallel manipulator, a new wire-driven parallel suspension system for airplane model in low-speed wind tunnel is constructed, and the methods to measure and calculate the aerodynamic parameters of the airplane model are studied. In detail, a static model of the wire-driven parallel suspension is analyzed, a mathematical model for describ- ing the aerodynamic loads exerted on the scale model is constructed and a calculation method for obtaining the aerodynamic parameters of the model by measuring the tension of wires is presented. Moreover, the measurement system for wire tension and its corresponding data acquisition system are designed and built. Thereafter, the wire-driven parallel suspension system is placed in an open return circuit low-speed wind tunnel for wind tunnel tests to acquire data of each wire tension when the airplane model is at different attitudes and different wind speeds. A group of curves about the parameters for aerodynamic load exerted on the airplane model are obtained at different wind speeds after the acquired data are analyzed. The research results validate the feasibility of using a wire-driven parallel manipulator as the suspension system for low-speed wind ttmnel tests.

关键词： wire-driven parallel manipulators low-speed wind tunnel suspension system aerodynamic loads tests

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Dynamic Resonant Frequency Bands of suspension system of Vehicles with Varying Speeds Based on Time⁃Frequency Spectrum

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Transactions of Nanjing University of Aeronautics and Astronautics 2021年第2期38卷 333-343页

作者： ZHANG Buyun ZENG Falin TAN Chin-An Automotive Engineering Research Institute Jiangsu UniversityZhenjiang 212013P.R.China Department of Mechanical Engineering Wayne State UniversityDetroit 48202USA

The dynamic responses of suspension system of a vehicle travelling at varying speeds are generally nonstationary random processes,and the non-stationary random analysis has become an important and complex problem in vehicle ride dynamics in the past few *** paper proposes a new concept,called dynamic frequency domain(DFD),based on the fact that the human body holds different sensitivities to vibrations at different frequencies,and applies this concept to the dynamic assessment on non-stationary *** study mainly includes two parts,the first is the input numerical calculation of the front and the rear wheels,and the second is the dynamical response analysis of suspension system subjected to non-stationary random *** time integration method is used to obtain the vertical acceleration of suspension barycenter and the pitching angular acceleration,both root mean square(RMS)values of which are illustrated in different accelerating *** results show that RMS values of non-stationary random excitations are functions of time and increase as the speed increases at the same *** DFD of vertical acceleration is finally analyzed using time-frequency analysis technique,and the conclusion is obviously that the DFD has a trend to the low frequency region,which would be significant reference for active suspension design under complex driving conditions.

关键词： non-stationary random process suspension system vehicle modeling dynamical frequency domain(DFD) ride comfort

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A Study of IVECO Automobile suspension system by Simulation

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International Journal of Plant Engineering and Management 2008年第4期13卷 232-236页

作者： SU Xiao-ping LU Dong-sheng ZHENG Dan-dan WANG Liang-mo College of Mechanical & Power Engineering Nanjing University of Technology Nanjing 210009 P.R. China School of Mechanics Nanjing University of Science and Technology Nanjing 210094 P.R. China

For analyzing the ride comfort performance, a dynamical model of an IVECO vehicle was built in this paper. The simulation study of the IVECO vehicle suspension performance on random uneven road is carried out by means of the dynamical model. The effects of suspension system parameters on the vehicle ride comfort parameter, i. e. , the root mean square （ RMS） of the vibrating acceleration of the vehicle body, are analyzed. The optimal parameters and initial value of the suspension system can be determined by the model and the method of this paper.

关键词： IVECO vehicle suspension system simulation model ride comfort

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MBPLS-Based Rail Vehicle suspension system Fault Detection

MBPLS-Based Rail Vehicle Suspension System Fault Detection

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第26届中国控制与决策会议

作者： Xiukun Wei Ying Guo Limin Jia State Key Laboratory of Rail Traffic Control and Safety Beijing Jiaotong University

ISBN: (纸本)9781479937097

The suspension system plays a crucial role of rail vehicles. The fault detection of the suspension system is an effective way to ensure the security, stable operation of rail vehicles. This paper concerns the fault detection issue of rail vehicle suspension systems with the extended form of Partial Least Squares（PLS）, which is Multi-block Partial Least Squares（MBPLS）. The signal information used in the fault detection is obtained from the SIMPACK and MATLAB co-simulation environment. In this paper, the typical primary spring and damper faults and secondary spring and damper faults are detected successfully using MBPLS. MBPLS is applied to the block data, and the statistical index SPE and 2T are used to monitor the performance of the suspension system. Compared with DPCA, the effectiveness of the proposed approach is demonstrated by the simulation results for several fault scenarios of primary and secondary faults.

关键词： Fault detection suspension system MBPLS Railway

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Fuzzy Logic Control for suspension systems of Tracked Vehicles

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Journal of Beijing Institute of Technology 2009年第1期18卷 37-40页

作者：于杨魏雪霞张永发 State Key Laboratory of Explosion Science and Technology Beijing Institute of Technology

A scheme of fuzzy logic control for the suspension system of a tracked vehicle is presented. A mechanical model for the whole body of a tracked vehicle, which is totally a fifteen-degree-of-freedom system, is established. The model includes the vertical motion, the pitch motion as well as the roll motion of the tracked vehicle. In contrast to most previous studies, the coupling effect among the vertical, the pitch and the roll motions of the suspension system of a tracked vehicle is considered simultaneously. The simulation of fuzzy logic control under road surface with random excitation shows that the acceleration, pitch angle and roll angle of suspension system can be efficiently controlled.

关键词： suspension system tracked vehicle vibration control fuzzy logic control numerical simulation

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Cross-coupled Synchronizing Control of Dual suspension systems of Gantry CNC Machine

Cross-coupled Synchronizing Control of Dual Suspension Syste...

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第25届中国控制与决策会议

作者： Chunfang Liu Gang Rong Yuxian Zhang School of Electrical Engineering Shenyang University of Technology

ISBN: (纸本)9781467355322

In order to solve the problem which the dual-suspension systems was not always synchronous, air gap and speed double cross-coupled synchronizing method was proposed in this paper. At first electromagnetic suspension system mathematical model was established. Then the coupled model of two suspension systems could be deduced, and double cross-coupled controller was designed on the base of the model. The simulation results show that the designed controller can make the system achieve better anti-interference performance and robustness. The beam can suspend steadily without any friction.

关键词： suspension system cross-coupled control synchronizing control.

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μ-Syntheses of suspension systems for EMS and EDS Maglev Vehicles

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Journal of Southwest Jiaotong University(English Edition) 2003年第1期11卷 1-8页

作者：张汉全姚兴苗冀贞海 School of Computer and Communication Engineering Southwest Jiaotong University

Under model uncertainty and complex disturbance, the robust control strategy should be used in suspension control systems for various Maglev vehicles to obtain ride comfort of passengers. In this paper, the robust controllers are synthesized using μ approach for levitation system of electromagnetic Maglev vehicle and active suspension system of super conducting Maglev vehicle. The numerical simulations for different parameter perturbations and different disturbances are accomplished, and a comparison of μ control and H ∞ control is performed. The simulation results show that, both H ∞ control and μ control for two kinds of Maglev vehicles exhibit good stability robustness to plant model uncertainty, but μ control exhibits better performance robustness than H ∞ control, therefore better ride quality could be obtained by μ control.

关键词： Maglev vehicles suspension system robust control μ control strategy

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