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Bandwidth-limited active suspension controller for an off-road vehicle based on co-simulation technology

FENG Jinzhi, ZHENG Songlin, YU Fan

Frontiers of Mechanical Engineering 2008, Volume 3, Issue 1,   Pages 111-117 doi: 10.1007/s11465-008-0020-7

Abstract: This paper presents the design process of a controller for bandwidth-limited active hydro-pneumatic suspensionSecond, a combined PID and fuzzy controller is designed for the bandwidth-limited active suspension system

Keywords： co-simulation technology     exchange interface     conventional     bandwidth-limited     algorithm    

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High-bandwidth nanopositioning via active control of system resonance

Linlin LI, Sumeet S. APHALE, Limin ZHU

Frontiers of Mechanical Engineering 2021, Volume 16, Issue 2,   Pages 331-339 doi: 10.1007/s11465-020-0619-x

Abstract: Typically, the achievable positioning bandwidth for piezo-actuated nanopositioners is severely limitedHowever, in almost all these cases, the achievable closed-loop bandwidth is still limited by the originalShifting this resonance to a higher frequency would undoubtedly result in a wider bandwidth.the resonant frequency of a nanopositioner’s axis, thereby delivering a wider closed-loop positioning bandwidthIt is shown that by employing the active resonance shifting, the closed-loop positioning bandwidth is

Keywords： nanopositioning stage     high-bandwidth     resonant mode control     tracking control     integral resonant control    

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Emergent limited perioperative transesophageal echocardiography: should new guidelines exist for limited

Yong G. Peng, Gregory M. Janelle

Frontiers of Medicine 2012, Volume 6, Issue 3,   Pages 332-337 doi: 10.1007/s11684-012-0212-8

Abstract:

Bedside limited echocardiography, or focused cardiac ultrasound, continues to gain popularity in many

Keywords： transesophageal echocardiography     curriculum     competency training     hemodynamic instability    

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Highlights of special issue on ‘Agriculture in Water-Limited Areas’

Pute WU

Frontiers of Agricultural Science and Engineering 2017, Volume 4, Issue 2,   Pages 123-125 doi: 10.15302/J-FASE-2017147

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Two-stage scheduling on batch and single machines with limited waiting time constraint

Zhongshun SHI, Zewen HUANG, Leyuan SHI

Frontiers of Engineering Management 2017, Volume 4, Issue 3,   Pages 368-374 doi: 10.15302/J-FEM-2017034

Abstract: This study addresses the problem of two-stage scheduling on batch and single machines with limited waiting

Keywords： batch machine     flow shop     makespan     limited waiting time    

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Adaptation of Chinese and German maize-based food-feed-energy systems to limited phosphate resources—a

Torsten MÜLLER, Fusuo ZHANG

Frontiers of Agricultural Science and Engineering 2019, Volume 6, Issue 4,   Pages 313-320 doi: 10.15302/J-FASE-2019282

Abstract: Phosphate is a limited essential nutrient, however, with very uneven distribution worldwide.research training group “Adaptation of Chinese and German maize-based food-feed-energy systems to limitedThe interdisciplinary and complementary research is driven by the hypothesis that under phosphate limited

Keywords： international research training group     limited resources     maize     phosphate    

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Non-convex sparse optimization-based impact force identification with limited vibration measurements

Frontiers of Mechanical Engineering 2023, Volume 18, Issue 3, doi: 10.1007/s11465-023-0762-2

Abstract: Impact force identification is important for structure health monitoring especially in applications involving composite structures. Different from the traditional direct measurement method, the impact force identification technique is more cost effective and feasible because it only requires a few sensors to capture the system response and infer the information about the applied forces. This technique enables the acquisition of impact locations and time histories of forces, aiding in the rapid assessment of potentially damaged areas and the extent of the damage. As a typical inverse problem, impact force reconstruction and localization is a challenging task, which has led to the development of numerous methods aimed at obtaining stable solutions. The classical ℓ2 regularization method often struggles to generate sparse solutions. When solving the under-determined problem, ℓ2 regularization often identifies false forces in non-loaded regions, interfering with the accurate identification of the true impact locations. The popular ℓ1 sparse regularization, while promoting sparsity, underestimates the amplitude of impact forces, resulting in biased estimations. To alleviate such limitations, a novel non-convex sparse regularization method that uses the non-convex ℓ1−2 penalty, which is the difference of the ℓ1 and ℓ2 norms, as a regularizer, is proposed in this paper. The principle of alternating direction method of multipliers (ADMM) is introduced to tackle the non-convex model by facilitating the decomposition of the complex original problem into easily solvable subproblems. The proposed method named ℓ1−2-ADMM is applied to solve the impact force identification problem with unknown force locations, which can realize simultaneous impact localization and time history reconstruction with an under-determined, sparse sensor configuration. Simulations and experiments are performed on a composite plate to verify the identification accuracy and robustness with respect to the noise of the ℓ1−2-ADMM method. Results indicate that compared with other existing regularization methods, the ℓ1−2-ADMM method can simultaneously reconstruct and localize impact forces more accurately, facilitating sparser solutions, and yielding more accurate results.

Keywords： impact force identification     inverse problem     sparse regularization     under-determined condition     alternating direction method of multipliers    

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Full-field dynamic strain reconstruction of an aero-engine blade from limited displacement responses

Frontiers of Mechanical Engineering 2023, Volume 18, Issue 1, doi: 10.1007/s11465-022-0731-1

Abstract: proposes a method of full-field and real-time strain reconstruction of an aero-engine blade based on limitedLimited optical measured displacement responses are utilized to reconstruct the full-field strain.

Keywords： aero-engine blade     displacement response     dynamic strain reconstruction     mode shape     strain gauge    

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dynamics of polymer solar cells probed by a transient photocurrent nearby the regime of the space charge-limited

Boa Jin, Hyunmin Park, Yang Liu, Leijing Liu, Jongdeok An, Wenjing Tian, Chan Im

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 1,   Pages 164-179 doi: 10.1007/s11705-020-1976-z

Abstract: the saturation behavior at a high excitation-intensity range nearby the regime of the space charge-limited

Keywords： charge-carrier photogeneration     transient photocurrent     polymer solar cells     charge-carrier extraction     space charge-limited    

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An approach to bandwidth management based on fuzzy logic

Li Zuxin,Wang Wanliang,Lei Bicheng,Chen Huiying

Strategic Study of CAE 2008, Volume 10, Issue 7,   Pages 104-111

Abstract: can be further improved.Moreover,the upper and lower bound of the assignable bandwidth,which guaranteeresource conditions.Finally, normalizable criterions of the quality of control (QoC) and requirement of bandwidthOn those criterions, the proposed algorithm, namely fuzzy bandwidth management (FBM) , and traditionalfixed bandwidth allocation (FBA) are compared.simulation highlight that the proposed algorithm can significantly improve performance and save more bandwidth

Keywords： fuzzy bandwidth management     networked control systems     quality of control     requirement ofbandwidth    

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Probe into semi dryland agriculture limited supplemental irrigation model in the water deficit areas

Li Yingneng

Strategic Study of CAE 2012, Volume 14, Issue 3,   Pages 41-45

Abstract: the significance of the water deficit areas of North China, and gave the semi-dryland agricultural limitedthe water deficit areas in North China, the model and tactics of developing semi-dryland agriculture limited

Keywords： semi-dryland     agriculture     limited supplemental irrigation     mode    

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Industrial Structure Adjustment of Shaanxi Province under the Limited Water Resources Condition

Xiao-jun Liu,Zhen-yu Guo,Chao Ding,Han-liang Fu

Frontiers of Engineering Management 2014, Volume 1, Issue 4,   Pages 378-384 doi: 10.15302/J-FEM-2014057

Abstract: focuses on building multi-objective programming model of industrial structure optimization under the limited

Keywords： water resources     capacity of water resources     industrial transformation     multi-objective programming    

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Signaling the Future, Cell Phones Gain Limited Satellite-Link Capabilities

Mitch Leslie

Engineering 2023, Volume 28, Issue 9,   Pages 4-6 doi: 10.1016/j.eng.2023.07.003

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Monte Carlo simulation of the diffusion-limited aggregating process of particle suspension systems

Jiajing XU, Lin ZHANG, Yongjian TANG, Wei DAI, Wenwen SHAN,

Frontiers of Chemical Science and Engineering 2010, Volume 4, Issue 3,   Pages 270-274 doi: 10.1007/s11705-009-0273-7

Abstract: In this paper, the aggregating process was simulated with off-lattice diffusion-limited cluster-cluster

Keywords： cluster-cluster aggregation     distribution function     relationship     process     universal    

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Comments on “Adaptation of Chinese and German maize-based food-feed-energy systems to limited phosphate

Antje SCHWALB

Frontiers of Agricultural Science and Engineering 2019, Volume 6, Issue 4,   Pages 443-444 doi: 10.15302/J-FASE-2019288

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Title Author Date Type Operation

Bandwidth-limited active suspension controller for an off-road vehicle based on co-simulation technology

FENG Jinzhi, ZHENG Songlin, YU Fan

Journal Article

High-bandwidth nanopositioning via active control of system resonance

Linlin LI, Sumeet S. APHALE, Limin ZHU

Journal Article

Emergent limited perioperative transesophageal echocardiography: should new guidelines exist for limited

Yong G. Peng, Gregory M. Janelle

Journal Article

Highlights of special issue on ‘Agriculture in Water-Limited Areas’

Pute WU

Journal Article

Two-stage scheduling on batch and single machines with limited waiting time constraint

Zhongshun SHI, Zewen HUANG, Leyuan SHI

Journal Article

Adaptation of Chinese and German maize-based food-feed-energy systems to limited phosphate resources—a

Torsten MÜLLER, Fusuo ZHANG

Journal Article

Non-convex sparse optimization-based impact force identification with limited vibration measurements

Journal Article

Full-field dynamic strain reconstruction of an aero-engine blade from limited displacement responses

Journal Article

dynamics of polymer solar cells probed by a transient photocurrent nearby the regime of the space charge-limited

Boa Jin, Hyunmin Park, Yang Liu, Leijing Liu, Jongdeok An, Wenjing Tian, Chan Im

Journal Article

An approach to bandwidth management based on fuzzy logic

Li Zuxin,Wang Wanliang,Lei Bicheng,Chen Huiying

Journal Article

Probe into semi dryland agriculture limited supplemental irrigation model in the water deficit areas

Li Yingneng

Journal Article

Industrial Structure Adjustment of Shaanxi Province under the Limited Water Resources Condition

Xiao-jun Liu,Zhen-yu Guo,Chao Ding,Han-liang Fu

Journal Article

Signaling the Future, Cell Phones Gain Limited Satellite-Link Capabilities

Mitch Leslie

Journal Article

Monte Carlo simulation of the diffusion-limited aggregating process of particle suspension systems

Jiajing XU, Lin ZHANG, Yongjian TANG, Wei DAI, Wenwen SHAN,

Journal Article

Comments on “Adaptation of Chinese and German maize-based food-feed-energy systems to limited phosphate

Antje SCHWALB

Journal Article