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基于外挂减振器整车平顺性联合仿真方法 被引量:3
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作者 刘通 王海 +2 位作者 刘艳华 赵晓亮 黄小征 《科学技术与工程》 北大核心 2021年第10期4219-4225,共7页
针对传统Adams模型平顺性分析对减振器摩擦考虑不全的问题,基于减振器摩擦原理建立了数学拟合模型,依据不同工况下的试验曲线对外挂减振器模型进行参数同定,通过参数优化使得拟合曲线与试验曲线具有很好的一致性;运用ADAMS与MATLABSimul... 针对传统Adams模型平顺性分析对减振器摩擦考虑不全的问题,基于减振器摩擦原理建立了数学拟合模型,依据不同工况下的试验曲线对外挂减振器模型进行参数同定,通过参数优化使得拟合曲线与试验曲线具有很好的一致性;运用ADAMS与MATLABSimulink模块建立了联合仿真模型;并在不同特征路面上分别对ADAMS模型减振器与外挂减振器所体现的振动特性进行对比分析。研究表明,与ADAMS中只体现阻尼力-速度(F-V)特性的减振器相比,外挂减振器所体现的摩擦特性对整车垂向加速度振动峰值抑制效果更接近实际情况:脉冲路面,驾驶员侧地板垂向加速度振幅减小9.57%;随机路面根据特征的激励的不同,也会使驾驶员侧地板振动加速度振动峰值下降5%~10%。研究结果为平顺性仿真精度的提高提供了一种全新的方法。 展开更多
关键词 外挂减振器 摩擦 参数同定 抑制
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建立高精度数学模型的研究
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作者 田政 神谷好承 冈部佐规一 《机械与电子》 1997年第6期20-22,共3页
论述了对于电动机驱动系统,如何通过误差评价,不断修正近似数学模型,从而建立起高精度化的数学模型的一种有效方法。
关键词 参数同定 电动机 驱动系统 数学模型
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A General Approach for Synchronization of Chaotic Systems with Parameters Perturbation
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作者 LONGMin QIUShui-Sheng PENGFei 《Communications in Theoretical Physics》 SCIE CAS CSCD 2005年第3期455-458,共4页
By making use of the theory of stability for dynamical systems, a general approach for synchronization of chaotic systems with parameters perturbation is presented, and a general method for determining control functio... By making use of the theory of stability for dynamical systems, a general approach for synchronization of chaotic systems with parameters perturbation is presented, and a general method for determining control function is introduced. The Rossler system is employed to verify the effectiveness of the method, and the theoretical results are confirmed by simulations. 展开更多
关键词 CHAOS SYNCHRONIZATION parameters perturbation
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Function Projective Synchronization in Discrete-Time Chaotic System with Uncertain Parameters
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作者 CHEN Yong LI Xin 《Communications in Theoretical Physics》 SCIE CAS CSCD 2009年第3期470-474,共5页
The function projective synchronization of discrete-time chaotic systems is presented. Based on backstepping design with three controllers, a systematic, concrete and automatic scheme is developed to investigate funct... The function projective synchronization of discrete-time chaotic systems is presented. Based on backstepping design with three controllers, a systematic, concrete and automatic scheme is developed to investigate function projective synchronization (FPS) of discrete-time chaotic systems with uncertain parameters. With the aid of symbolic-numeric computation, we use the proposed scheme to illustrate FPS between two identical 3D Henon-like maps with uncertain parameters. Numeric simulations are used to verify the effectiveness of our scheme. 展开更多
关键词 function projective synchronization backstepping design discrete-time chaotic system Henon-like map
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Mixed H_∞ and Passive Projective Synchronization for Fractional Order Memristor-Based Neural Networks with Time-Delay and Parameter Uncertainty 被引量:1
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作者 宋晓娜 宋帅 +1 位作者 Inés Tejado Balsera 刘磊坡 《Communications in Theoretical Physics》 SCIE CAS CSCD 2017年第10期483-494,共12页
This paper investigates the mixed Ho~ and passive projective synchronization problem for fractional-order (FO) memristor-based neural networks. Our aim is to design a controller such that, though the unavoidable phe... This paper investigates the mixed Ho~ and passive projective synchronization problem for fractional-order (FO) memristor-based neural networks. Our aim is to design a controller such that, though the unavoidable phenomena of time-delay and parameter uncertainty are fully considered, the resulting closed-loop system is asymptotically stable with a mixed H∞ and passive performance level. By combining active and adaptive control methods, a novel hybrid control strategy is designed, which can guarantee the robust stability of the closed-loop system and also ensure a mixed H∞ and passive performance level. Via the application of FO Lyapunov stability theory, the projective synchronization conditions are addressed in terms of linear matrix inequaiity techniques. Finally, two simulation examples are given to illustrate the effectiveness of the proposed method. 展开更多
关键词 H∞ and passive performance fractional-order memristor-based neural networks adaptive pro-jective synchronization time delay uncertain parameters
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