| 频段内汽车悬架时滞反馈控制参数优化 |
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| 引用本文： | 刘建均,孙艺瑕,李 胜.频段内汽车悬架时滞反馈控制参数优化[J].教育技术导刊,2020,19(5):102-106. |
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| 作者姓名： | 刘建均 孙艺瑕 李 胜 |
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| 作者单位： | 上海工程技术大学 机械与汽车工程学院，上海 201620 |
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| 基金项目： | 国家自然科学基金项目（11602135） |
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| 摘 要： | 对有限频段内汽车悬架系统的时滞反馈控制参数优化问题进行研究。首先，建立时滞加速度反馈控制下 1/4 汽车悬架系统力学模型，推导出车身和车轮加速度幅值的解析表达式；其次，通过对系统稳定性分析，得到关于反馈增益系数和时滞的稳定性分区图，以数值计算验证稳定性分析的正确性；最后，在有限频段内以最大车身加速度变化的百分比为优化目标，以反馈增益系数和时滞为优化参数，利用粒子群优化算法获得有限频段内最优反馈增益系数和时滞。实验结果表明，与被动汽车悬架系统相比较，最优时滞反馈控制下汽车悬架系统的隔振性能获得了明显提高，在最优时滞反馈控制参数取值下，有限频段内车身加速度幅值至少降低37.27%。
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| 关 键 词： | 汽车悬架系统 有限频段 时滞反馈控制 参数优化 隔振性能 |
| 收稿时间： | 2019-06-06 |
Parameter Optimization of Time-delayed Feedback Control for Vehicle Suspension System in Finite Frequency Band |
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| LIU Jian-jun,SUN Yi-xia,LI Sheng.Parameter Optimization of Time-delayed Feedback Control for Vehicle Suspension System in Finite Frequency Band[J].Introduction of Educational Technology,2020,19(5):102-106. |
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| Authors: | LIU Jian-jun SUN Yi-xia LI Sheng |
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| Institution: | School of Mechanical and Automotive Engineering，Shanghai University of Engineering Science，Shanghai 201620，China |
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| Abstract: | The optimization of time-delayed feedback control parameters of vehicle suspension systems in finite frequency band is studied. Firstly，the mechanical model of 1/4 car suspension system with time-delayed acceleration feedback control is established，and the analytical expression of vehicle body and wheel acceleration amplitude is derived. Secondly，the stability partition map of feedback gain coefficient and time delay is obtained by stability analysis of the system，and the correctness of stability analysis is verified by numerical calculation. Finally，the optimal feedback gain coefficient and the optimal time delay in the finite frequency band are obtained by using the particle swarm optimization algorithm with the maximum percentage of body acceleration change as the optimization objective and the feedback gain coefficient and time delay as the optimization parameters. Compared with the passive vehicle suspension system，the vibration isolation performance of the vehicle suspension system under the optimal time-delayed feedback control has been significantly improved. Under the optimal time-delayed feedback control parameters value，the acceleration amplitude of the vehicle body in the finite frequency band can be reduced by at least 37.27%. |
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| Keywords: | automobile suspension system limited frequency band time-delayed feedback control optimization Vibration isolation performance |
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