Journal of Vibration and Control最新文献_第6页

Research on composite hierarchical anti-disturbance strategy for magnetic bearing rotor using H∞ and observer 使用 H∞ 和观测器的磁悬浮轴承转子复合分层抗扰策略研究

Journal of Vibration and Control Pub Date : 2024-01-08 DOI: 10.1177/10775463231225689

Chaowu Jin, Yingqing Cao, Heng Zhou, Jin Zhou, Yuanping Xu, Zhoucheng Ye, Yu Xin

{"title":"Research on composite hierarchical anti-disturbance strategy for magnetic bearing rotor using H∞ and observer","authors":"Chaowu Jin, Yingqing Cao, Heng Zhou, Jin Zhou, Yuanping Xu, Zhoucheng Ye, Yu Xin","doi":"10.1177/10775463231225689","DOIUrl":"https://doi.org/10.1177/10775463231225689","url":null,"abstract":"The magnetic bearing rotor system is affected by internal uncertainties and various forms of external disturbances, which will affect the stability of the active magnetic bearing system. To address this issue, a composite hierarchical anti-disturbance strategy is used to improve the anti-disturbance ability of the magnetic bearing rotor system. The disturbance observer is used to compensate the system’s external disturbances, and the controller is used to suppress the system’s internal uncertainties. For this purpose, H∞ controller, disturbance observer (DOB), and linear extended state observer (LESO) are designed, respectively. Then, H∞ controller is combined with DOB and LESO to form H∞-DOB and H∞-LESO composite controllers and prove their stability. Finally, simulation and experiments show that H ∞-DOB and H ∞-LESO have better disturbance suppression effects than the H ∞ controller for external disturbances. And when the disturbance frequency or rotor rotation frequency of the system is high, H ∞-LESO controller has better disturbance suppression effect than H ∞-DOB.","PeriodicalId":508293,"journal":{"name":"Journal of Vibration and Control","volume":"56 7","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139447369","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The vibroacoustic characteristic of beam-plate coupled structure in similitude 模拟梁-板耦合结构的振动声学特性

Journal of Vibration and Control Pub Date : 2024-01-08 DOI: 10.1177/10775463241226866

Fengxia He, Zhong Luo, Huaitao Shi, Changshuai Yu, Lei Li

{"title":"The vibroacoustic characteristic of beam-plate coupled structure in similitude","authors":"Fengxia He, Zhong Luo, Huaitao Shi, Changshuai Yu, Lei Li","doi":"10.1177/10775463241226866","DOIUrl":"https://doi.org/10.1177/10775463241226866","url":null,"abstract":"Similitude theory can be used to extrapolate the experimental data of a small, inexpensive, and easily tested model into design information for a large prototype. Scaling laws provide the relationship between a full-scale structure and its scale models. However, one challenging issue is the similitude of complex structure. To address the problem, an energy similarity method is presented based on the principle of conservation of power flow. The emphasis is to predict the vibroacoustic characteristic of beam-plate coupled structure in an effective and convenient way. The vibration response and radiated sound are investigated on the beam-plate coupled structure under random excitation. Numerical simulation and model test are both implemented, which validate the effectiveness and efficiency of the proposed method. Both aluminum and honeycomb materials are considered in beam-plate coupled structures. In addition, the comparison between the classic similitude method and the presented method (energy similarity) is illustrated. The results show that the energy similarity presented in this study can achieve a better performance in reproducing the vibroacoustic characteristic of beam-plate coupled structure than the classic similarity method.","PeriodicalId":508293,"journal":{"name":"Journal of Vibration and Control","volume":"7 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139445843","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Research on dynamic response of centrifugal pendulum vibration absorber based on hybrid damping model 基于混合阻尼模型的离心摆式振动吸收器动态响应研究

Journal of Vibration and Control Pub Date : 2024-01-02 DOI: 10.1177/10775463231225785

Yi Zhang, Jie Qiu, Guangqiang Wu

{"title":"Research on dynamic response of centrifugal pendulum vibration absorber based on hybrid damping model","authors":"Yi Zhang, Jie Qiu, Guangqiang Wu","doi":"10.1177/10775463231225785","DOIUrl":"https://doi.org/10.1177/10775463231225785","url":null,"abstract":"The application of the centrifugal pendulum vibration absorber (CPVA) has expanded from the aerospace sector to the automotive sector. To date, in most previous studies, viscous damping has been assumed to be present between the absorber and rotor, and damping has been neglected in other studies. To reflect and control the dynamic behaviour of the CPVA in vehicular applications realistically, a hybrid damping model incorporating viscous damping and rolling resistance was developed in this study and validated by conducting tests. Under the combined action of the centrifugal force, gravity, viscous resistance, and rolling resistance, an equation of motion of the CPVA was established using the Lagrangian function equation of the second type. The wear state of the kinematic pair between the absorber and rotor, which is common in practical applications, was included into a mathematical model in which the rolling resistance coefficient changes with the travel of the absorber, whereas the viscous resistance coefficient remains unchanged. A model was established to simulate the response of the absorber under a wide range of working conditions, and corresponding tests were performed. Compared with the results obtained using only viscous damping as reported in other studies, those of the proposed hybrid damping model are more consistent with the experimental results. This work fills the existing research gap and lays a foundation for further control of the dynamic behaviour of CPVAs in the gravitational field, particularly at low rotational speeds.","PeriodicalId":508293,"journal":{"name":"Journal of Vibration and Control","volume":"136 10","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139452988","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Fully analytic approach to study bifurcation phenomenon for a shape memory alloy beam under temperature variation and lateral white-noise excitation 用全解析方法研究温度变化和横向白噪声激励下形状记忆合金梁的分叉现象

Journal of Vibration and Control Pub Date : 2024-01-02 DOI: 10.1177/10775463231222779

Alireza Asnafi

引用次数: 0

Transverse free vibration analysis of thin sectorial plates by the weak form quadrature element method 用弱形式正交元素法分析扇形薄板的横向自由振动

Journal of Vibration and Control Pub Date : 2024-01-02 DOI: 10.1177/10775463231225276

Hebin Liu, Hongzhi Zhong

引用次数: 0

Discrete sliding mode control based on a new fractional order power reaching law 基于新分数阶功率达成律的离散滑模控制

Journal of Vibration and Control Pub Date : 2024-01-02 DOI: 10.1177/10775463231223273

Aicha Znidi, Rim Jallouli Khlif, A. S. Nouri

引用次数: 0

Investigating the Sommerfeld effect in the rotating shaft with internal and external damping using the Timoshenko beam theory 利用季莫申科梁理论研究带有内部和外部阻尼的旋转轴中的萨默菲尔德效应

Journal of Vibration and Control Pub Date : 2024-01-02 DOI: 10.1177/10775463231225691

Hossein Movahedi, P. T. Birgani, E. Mirshekari

{"title":"Investigating the Sommerfeld effect in the rotating shaft with internal and external damping using the Timoshenko beam theory","authors":"Hossein Movahedi, P. T. Birgani, E. Mirshekari","doi":"10.1177/10775463231225691","DOIUrl":"https://doi.org/10.1177/10775463231225691","url":null,"abstract":"The Sommerfeld effect is a destructive phenomenon in rotating systems with a non-ideal electrical source, which causes instability in the system by applying a dynamic jump around critical speeds. In this article, the Sommerfeld effect has been investigated for the first time using the Timoshenko beam theory for an eccentric continuous shaft with internal and external damping. After deriving the governing equations and finding displacement functions using the semi-analytical method, the Sommerfeld effect near the critical speeds is detected using the instantaneous power balance method. As confirmation of the correctness of the derived relations, it has been shown that for thin shafts, there is a good consistency between the results obtained from the Euler–Bernoulli and Timoshenko theories in the early modes. However, it was observed that at higher critical speeds, the jump amplitude decreases, and the unstable speed range increases significantly, so the probability of entering the vicinity of the instability range in the next mode is not unexpected. Since no effect has been ignored in this study, the dynamic analysis of the Sommerfeld jump in thick shafts is also possible. Despite the common belief that Timoshenko beam theory is only considered suitable for studying thick shafts, it has been shown that the effects of shear deformation are significant in high-speed systems, even for non-thick shafts, and regardless of them in higher modes, it causes a calculation error in determining the point of occurrence of the Sommerfeld phenomenon.","PeriodicalId":508293,"journal":{"name":"Journal of Vibration and Control","volume":"134 28","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139453195","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0