| 半车非线性悬架的非平稳随机振动及控制 |
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| 引用本文： | 罗璇,靳艳飞.半车非线性悬架的非平稳随机振动及控制[J].动力学与控制学报,2013,11(1):70-76. |
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| 作者姓名： | 罗璇 靳艳飞 |
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| 作者单位： | 行器动力学与控制教育部重点实验室,北京理工大学宇航学院,北京100081 |
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| 基金项目： | 国家自然科学基金（10972032,11272051）、北京理工大学优秀青年教师资助计划持续支持项目（2010YS0101）资助 |
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| 摘 要： | 研究了1/2车非线性悬架模型在路面随机激励下的非平稳振动响应,并基于随机最优控制理论对其进行主动控制.首先利用等效线性化方法将具有非线性阻尼及迟滞刚度的非线性悬架模型线性化,然后将主动、被动悬架非平稳随机响应进行比较,结果表明非线性主动悬架的性能要优于被动悬架.最后,通过Monte-Carlo数值模拟验证了理论结果.
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| 关 键 词： | 非线性悬架 非平稳随机响应 等效线性化 随机最优控制 |
| 收稿时间： | 2012/4/17 0:00:00 |
| 修稿时间： | 2012/6/14 0:00:00 |
Non-stationary random vibration and optimal active control of a half-car nonlinear suspension |
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| Luo Xuan and Jin Yanfei.Non-stationary random vibration and optimal active control of a half-car nonlinear suspension[J].Journal of Dynamics and Control,2013,11(1):70-76. |
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| Authors: | Luo Xuan and Jin Yanfei |
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| Affiliation: | Luo Xuan Jin Yanfei (Key Laboratory of Dynamics and Control of Flight Vehicle Ministry of Education, School of Aerospace Engineering, Beijing Institute of Technology,Beijing 100081, China) |
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| Abstract: | This paper studied the non stationary stochastic response and the optimal control of a half car dynamical model with nonlinear active suspension under the excitation of random road surface. Using the method of equivalent linearization, the response statistics and stochastic optimal control of the nonlinear suspension were obtained. The comparison and analysis of the non stationary response of active and passive suspension show that the nonlinear active suspension is better than the passive suspension. Finally, the accuracy of the equivalent linearization technique was verified by Monte Carlo simulation. |
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| Keywords: | nonlinear suspension non-stationary random response equivalent linearization stochastic optimal control |
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