Experiments of Vibration Control for Active Pneumatic Suspension System in High Clearance Self-propelled Sprayer

被引：0
|
作者：
Wu X. [1 ,2 ]
Qin J. [1 ,2 ]
Du Y. [1 ,2 ]
Song Z. [1 ,2 ]
Chen Y. [3 ]
Xie B. [1 ,2 ]
机构：
[1] College of Engineering, China Agricultural University, Beijing
[2] Beijing Key Laboratory of Optimized Design for Modern Agricultural Equipment, Beijing
[3] College of Mechanical and Electronic Engineering, Northwest A&F University, Yangling, 712100, Shaanxi
来源：
Song, Zhenghe (songzhenghe@cau.edu.cn) | 2018年 / Chinese Society of Agricultural Machinery卷 / 49期
关键词：
Active pneumatic suspension; Discrete wavelets transform; Experiment; H[!sub]∞[!/sub] state-feedback control; High clearance self-propelled sprayer; Nonlinear time-frequency control;
D O I：
10.6041/j.issn.1000-1298.2018.06.007
中图分类号：
学科分类号：
摘要：
Owing to high center of mass, long and heavy spray beam, the high clearance self-propelled sprayer has a tendency to swing when it runs on the bumpy farmland. Especially the frequency of the excitation from ground is approximately the inherent frequency of the suspension, which will result in reduction of work quality or even endangering security of itself. So a scheme of an active pneumatic suspension controlled in due course was put forward to address the issue. But in practical control process of the active pneumatic suspension, several problems need to be taken into account simultaneously, including the nonlinearities existed in the air spring system, requirements about multivariable control of the acceleration and displacement as well as the constrained conditions for output force or suspension distance. Aiming at above problems, a vibration control scheme of joint controller with H∞ state-feedback control and time-frequency nonlinear control was established. Firstly, the optimal gain of state-feedback controller was solved under H∞ condition with constrains. With it the appropriately objective pressure of the air spring could be computed in each moment of the control process. Then, the time-frequency controller handled a proportional solenoid valve to enable the inner pressure of air spring to meet the objective pressure. Experiments were implemented to verify the control strategy based on a test-bench of active pneumatic suspension. Under the harmonic excitation of 1.3 Hz which was the first order resonance frequency of the system, the maximum sprung mass acceleration of passive pneumatic suspension was about 8.5 m/s2, that of the semi-active suspension was approximately 7 m/s2, whereas that of the active suspension was decreased to 2.5 m/s2. In whole control process, the displacement of suspension was controlled within the limitation and reverted to initial position after impacting. Besides, responses under the condition of road random excitation were also tested. All results showed the validation of the active vibration suppressed scheme as well as the vibration control method mentioned. © 2018, Chinese Society of Agricultural Machinery. All right reserved.
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页码：60 / 67
页数：7
相关论文
共 28 条
  • [1] Nguyen V.L., Zhang J., Le V.Q., Et al., Performance analysis of air suspension system of heavy truck with semi-active fuzzy control, Journal of Southeast University: English Edition, 33, 2, pp. 159-165, (2017)
  • [2] Sun X., Yuan C., Cai Y., Et al., Model predictive control of an air suspension system with damping multi-mode switching damper based on hybrid model, Mechanical Systems and Signal Processing, 94, pp. 94-110, (2017)
  • [3] Sun X., Chen L., Wang S., Et al., Research on damping multi-model adaptive control of semi-active air suspension, Transactions of the Chinese Society for Agricultual Machinery, 46, 3, pp. 351-357, (2015)
  • [4] Wu G., Huang H., Ye G., Semi-active control of automotive air suspension based on fractional calculus, Transactions of the Chinese Society for Agricultural Machinery, 45, 7, pp. 19-25, (2014)
  • [5] Todkar R.G., Design, development and testing of an air damper to control the resonant response of a SDOF quarter-car suspension system, Modern Mechanical Engineering, 1, 2, pp. 84-92, (2011)
  • [6] Zhang J., Simulation analysis on three concepts of active air spring suspension system of passenger car, Transactions of Beijing Institute of Technology, 27, 9, pp. 779-782, (2007)
  • [7] Zhu H., Yang J., Zhang Y., Et al., A novel air spring dynamic model with pneumatic thermodynamics, effective friction and viscoelastic damping, Journal of Sound and Vibration, 408, pp. 87-104, (2017)
  • [8] Zargar B., Fahim A., Jnifene A., Development, validation, and parameter sensitivity analyses of a nonlinear mathematical model of air springs, Journal of Vibration and Control, 18, 12, pp. 1777-1787, (2012)
  • [9] Liu H., Lee J.C., Model development and experimental research on an air spring with auxiliary reservoir, International Journal of Automotive Technology, 12, 6, pp. 839-847, (2011)
  • [10] Porumamilla H., Kelkar A.G., Vogel J.M., Modeling and verification of an innovative active pneumatic vibration isolation system, ASME Journal of Dynamic Systems, Measurement, and Control, 130, 3, (2008)
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