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Skyhook-based Semi-active Control of Full-vehicle Suspension with Magneto-rheological Dampers

Chinese Journal of Mechanical Engineering 2013年第3期26卷 498-505页

作者： ZHANG Hailong WANG Enrong min fuhong SUBASH Rakheja SU Chunyi School of Electric and Automation Engineering Nanjing Normal University Department of Mechanical Engineering Concordia University

The control study of vehicle semi-active suspension with magneto-rheological (MR) dampers has been attracted much attention internationally. However, a simple, real time and easy implementing semi-active controller has not been proposed for the MR full-vehicle suspension system, and a systematic analysis method has not been established for evaluating the multi-objective suspension performances of MR full-vehicle vertical, pitch and roll motions. For this purpose, according to the 7-degree of freedom (DOF) fullvehicle dynamic system, a generalized 7-DOF MR and passive full-vehicle dynamic model is set up by employing the modified Boucwen hysteretic force-velocity (F-v) model of the MR damper. A semi-active controller is synthesized to realize independent control of the four MR quarter-vehicle sub-suspension systems in the full-vehicle, which is on the basis of the proposed modified skyhook damping scheme of MR quarter-vehicle sub-suspension system. The proposed controller can greatly simplify the controller design complexity of MR full-vehicle suspension and has merits of easy implementation in real application, wherein only absolute velocities of sprung and unsprung masses with reference to the road surface are required to measure in real time when the vehicle is moving. Furthermore, a systematic analysis method is established for evaluating the vertical, pitch and roll motion properties of both MR and passive full-vehicle suspensions in a more realistic road excitation manner, in which the harmonic, rounded pulse and real road measured random signals with delay time are employed as different road excitations inserted on the front and rear two wheels, by considering the distance between front and rear wheels in full-vehicle. The above excitations with different amplitudes are further employed as the road excitations inserted on left and right two wheels for evaluating the roll motion property. The multi-objective suspension performances of ride comfort and handling

关键词： magneto-rheological damper skyhook policy semi-active control multi-objective performances full-vehicle suspension

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Semi-active Sliding Mode Control of Vehicle Suspension with Magneto-rheological Damper

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Chinese Journal of Mechanical Engineering 2015年第1期28卷 63-75页

作者： ZHANG Hailong WANG Enrong ZHANG Ning min fuhong SUBASH Rakheja SU Chunyi School of Physics and Technology Nanjing Normal University School of Electric and Automation Engineering Nanjing Normal University Department of Mechanical Engineering Concordia University

The vehicle semi-active suspension with magneto-theological damper（MRD） has been a hot topic since this decade, in which the robust control synthesis considering load variation is a challenging task. In this paper, a new semi-active controller based upon the inverse model and sliding mode control （SMC） strategies is proposed for the quarter-vehicle suspension with the magneto-rheological （MR） damper, wherein an ideal skyhook suspension is employed as the control reference model and the vehicle sprung mass is considered as an uncertain parameter. According to the asymptotical stability of SMC, the dynamic errors between the plant and reference systems are used to derive the control damping force acquired by the MR quarter-vehicle suspension system. The proposed modified Bouc-wen hysteretic force-velocity （F-v） model and its inverse model of MR damper, as well as the proposed continuous modulation （CM） filtering algorithm without phase shift are employed to convert the control damping force into the direct drive current of the MR damper. Moreover, the proposed semi-active sliding mode controller （SSMC）-based MR quarter-vehicle suspension is systematically evaluated through comparing the time and frequency domain responses of the sprung and unsprung mass displacement accelerations, suspension travel and the tire dynamic force with those of the passive quarter-vehicle suspension, under three kinds of varied amplitude harmonic, rounded pulse and real-road measured random excitations. The evaluation results illustrate that the proposed SSMC can greatly suppress the vehicle suspension vibration due to uncertainty of the load, and thus improve the ride comfort and handling safety. The study establishes a solid theoretical foundation as the universal control scheme for the adaptive semi-active control of the MR full-vehicle suspension decoupled into four MR quarter-vehicle sub-suspension systems.

关键词： magneto-rheological damper vehicle suspension multi-objective performance semi-active sliding mode control filtering

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Dynamic Analysis and Circuit Implementations of a Novel Memristive Chaotic Circuit 36

Dynamic Analysis and Circuit Implementations of a Novel Memr...

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第36届中国控制会议

作者： Peng Guangya min fuhong Ye Biaoming School of Electrical and Automation Engineering

ISBN: (纸本)9781538629185

A new four-dimensional memristive chaotic circuit is proposed by adding a smooth active memristor to the modified Chua’s *** appropriate parameters of the memristor are selected and its characteristics are *** dissipativity,equilibrium point set and stability of this new memristive chaotic circuit are analyzed *** dynamic characteristics of the chaotic system are presented by means of phase-diagram,Lyapunov exponent and bifurcation ***,the circuit model of the memristive chaotic system is designed using Multism simulation *** experimental and simulation results are consistent that proves the feasibility of the system.

关键词： Smooth active memristor Memristive chaotic circuit Dynamic characteristics Circuit model

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The Analysis of Projective Synchronization for two Dynamical Gyros

The Analysis of Projective Synchronization for two Dynamical...

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第25届中国控制与决策会议

作者： fuhong min Shuyi Shao Enrong Wang Xuehong Wu School of Electric and Automation Engineering Nanjing Normal University

ISBN: (纸本)9781467355339

In this paper, the projective synchronization for two gyros with different motions is investigated based on a discontinuous feedback contoller. From the theory of discontinuous dynamical systems, the analytical conditions of such synchronization are developed, and the synchronization invariant domain is also presented. The full synchronizations for a noised chaotic gyro with an expected period-5 motion are presented to demonstrate the feasibility of the proposed method.

关键词： Projective Synchronization Gyros Discontinuous dynamical systems Full synchronization

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Some synchronization criteria for bidirectionally-coupled chaotic systems

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控制理论与应用（英文版） 2005年第3期3卷 235-240页

作者： fuhong min Zhiquan WANG Yong JU Department of Automation Nanjing University of Science ＆ Technology Nanjing Jiangsu 210094 China College of Electrical Engineering and Automation Nanjing Normal University Nanjing Jiangsu 210042 China

Based on the stability theory of linear time-varying continuous system, this paper investigates the synchronization of two linear bidirectionally-coupled systems. Sufficient conditions for asymptotic synchronization are obtained for general chaotic system with bidirectional coupling via linear error feedback. Since the trajectory of chaotic system is continuous and bounded, one can choose suitable coupled pararneters to satisfy the proposed criterion. The criterion can also be applied to the global synchronization for chaotic systems with linear unidirectional coupling. The chaotic Chen system and the generalized Lorenz-like system are taken as examples, the simulations verify the effectiveness of the proposed method.

关键词： Chaos synchronization Time-varying systems Bidirectional coupling

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含功率扰动电力系统混沌振荡的动态滑模控制

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通信学报 2019年第1期40卷 119-129页

作者：闵富红马汉媛王耀达南京师范大学电气与自动化工程学院江苏南京210023

随着电力行业的飞速发展,电力系统中出现极具危害的混沌振荡可能性增大,维持电力系统稳定的重要性日益突出。通过建立含功率扰动项的四阶电力系统模型,对Lyapunov指数、分岔图和谱熵等进行分析,讨论了功率扰动项的加入对电力系统运动状... 详细信息

随着电力行业的飞速发展,电力系统中出现极具危害的混沌振荡可能性增大,维持电力系统稳定的重要性日益突出。通过建立含功率扰动项的四阶电力系统模型,对Lyapunov指数、分岔图和谱熵等进行分析,讨论了功率扰动项的加入对电力系统运动状态的影响。同时,基于具有继电特性的切换函数设计了一种动态面滑模控制器,仿真结果表明该控制器在快速平滑抑制系统混沌振荡的同时,能够有效避免抖振问题,并且具有较强的顽健性。

关键词：功率扰动分岔图混沌振荡动态面滑模控制

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A new four-dimensional four-wing chaotic circuit based on Qi chaotic system

A new four-dimensional four-wing chaotic circuit based on Qi...

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第37届中国控制会议

作者： Lv Yanmin min fuhong Li Chuang Ye Biaoming School of Electrical and Automation Engineering

In this paper,a new four-dimensional four-wing chaotic circuit based on Qi chaotic system is proposed and the nonlinear characteristics are analyzed from the point of view of symmetry,dissipation and equilibrium ***,numerical analysis methods of nonlinear circuit,such as phase diagram,bifurcation diagram and Lyapunov exponent spectrum,are used to study the rich dynamic behavior with the change of system parameters and initial *** results indicate that the nonlinear system can generate attractor with different topological under distinct system ***,the coexistence of this system is abundant with diverse initial ***,the experimental results of circuit are in agreement with the numerical simulations which prove the circuit implantation of system is feasible completely.

关键词： four-dimensional system four-wing chaotic attractor coexistence circuit simulation

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含励磁环节的分数阶电力系统混沌振荡分析与控制

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电子与信息学报 2017年第8期39卷 1993-1999页

作者：闵富红王耀达窦一平南京师范大学电气与自动化工程学院南京210042

该文以含励磁环节的分数阶四阶电力系统模型为对象,研究其动力学行为并加以同步控制。首先,固定系统参数,利用分岔图和最大Lyapunov指数谱计算系统产生混沌振荡的最低阶次。其次,以单变量法分别研究机械功率、阻尼系数和励磁增益的改变... 详细信息

该文以含励磁环节的分数阶四阶电力系统模型为对象,研究其动力学行为并加以同步控制。首先,固定系统参数,利用分岔图和最大Lyapunov指数谱计算系统产生混沌振荡的最低阶次。其次,以单变量法分别研究机械功率、阻尼系数和励磁增益的改变对系统动力学行为的影响,通过数值仿真绘制系统随参数变化下的分岔图、Lyapunov指数谱等,选取不同的系统初值,研究同一系统在不同初值的情况下存在的多吸引子共存现象。最后,基于分数阶系统稳定性理论和非线性反馈控制理论,设计同步控制器实现系统混沌控制,数值仿真验证了所设计控制器的有效性。

关键词：分数阶系统四阶电力系统吸引子共存同步控制器

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基于FPGA技术的双磁控忆阻Shinriki振荡器对称行为分析

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电子与信息学报 2021年第11期43卷 3384-3392页

作者：闵富红郑宏亮芮智曹弋南京师范大学电气与自动化工程学院南京210046

该文通过将无源磁控忆阻器替换Shinriki振荡器中的二极管串并联支路,并利用有源磁控忆阻代替RLC谐振回路中的电阻,同时在电感支路串联电阻,得到一个新型双磁控忆阻Shinriki振荡器。通过特定参数的共存分岔图和Lyapunov指数谱,开创性地... 详细信息

该文通过将无源磁控忆阻器替换Shinriki振荡器中的二极管串并联支路,并利用有源磁控忆阻代替RLC谐振回路中的电阻,同时在电感支路串联电阻,得到一个新型双磁控忆阻Shinriki振荡器。通过特定参数的共存分岔图和Lyapunov指数谱,开创性地发现了振荡器具有的对称分岔行为,在双参数平面内展现运动状态分布的对称性。同时,在对称参数-初值平面的吸引盆中,分析对称域内系统的多稳态特性。并对存在的对称反单调现象、多运动状态吸引子对称共存和对称域中依赖初值的不完全对称行为进行研究。此外,基于FPGA技术完成双磁控忆阻Shinriki振荡器的数字电路实验,示波器上捕捉的波形验证了系统对称动力学行为分析的正确性。

关键词：双磁控忆阻Shinriki振荡器对称动力学行为多稳态特性反单调性不完全对称行为

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新型忆阻器混沌电路及其在图像加密中的应用

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电子与信息学报 2016年第10期38卷 2681-2688页

作者：闵富红王珠林王恩荣曹弋南京师范大学电气与自动化工程学院南京210042

忆阻器是一种拥有记忆功能的电阻,目前忆阻器的研究热点及难点在于新模型的建立以及相关方面的应用。该文提出一种基于双曲正弦函数的新型磁控忆阻器模型,通过分析电压和电流的相轨迹关系,发现其具有典型的忆阻器电压-电流特性曲线。利... 详细信息

忆阻器是一种拥有记忆功能的电阻,目前忆阻器的研究热点及难点在于新模型的建立以及相关方面的应用。该文提出一种基于双曲正弦函数的新型磁控忆阻器模型,通过分析电压和电流的相轨迹关系,发现其具有典型的忆阻器电压-电流特性曲线。利用新建的忆阻器模型构造新型忆阻混沌系统,通过数值仿真绘出新系统的相轨迹图、分岔图、Lyapunov指数谱等,分析了不同参数时系统的混沌演化过程。另外,基于电路仿真软件Multisim研制了实验仿真电路,该电路结构简单、易于实际制作,且仿真实验与理论分析结论十分吻合,证实了提出的忆阻混沌系统电路在物理上是可以实现的。最后,利用新系统混沌序列对图像进行加密,重点分析了加密直方图、相邻像素相关性以及抗攻击能力与密钥敏感性,结果表明新系统对图像密钥及明文都非常敏感,密钥空间较大,新提出的忆阻混沌系统应用于图像加密具有较高的安全性能。

关键词：忆阻器混沌电路动力学行为图像加密

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