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Modal disturbance investigation of rod-shaped ultrasonic motor using bending vibrations

ZHANG Jiantao, ZHU Hua, ZHAO Chunsheng

Frontiers of Mechanical Engineering 2008, Volume 3, Issue 3,   Pages 343-347 doi: 10.1007/s11465-008-0058-6

Abstract: Modal disturbance of a rod-shaped ultrasonic motor using bending vibrations can cause problems such asAccordingly, the structure parameters of the stator are modified to separate working modes from disturbanceThe frequency separation between working modes and disturbance modes is more than 2 kHz.

Keywords: Hamilton principle     disturbance     separation     frequency separation     dynamic analysis    

Virtual reality system of manned maneuvering unit taking into consideration the disturbance from an astronaut

CHENG Jian, FAN Xiu-min, XU An, HONG Xin, HUANG Wei-dong

Frontiers of Mechanical Engineering 2006, Volume 1, Issue 3,   Pages 282-287 doi: 10.1007/s11465-006-0042-y

Abstract: Based on the dynamics/kinematics model of an astronaut equipped with an MMU, a disturbance model of theFinally, the paper presents two different results between loading and unloading the disturbance model

Keywords: real-time emendation     disturbance     maneuvering     MMU     correction    

Application of a Novel Fuzzy Clustering Method Based on Chaos Immune Evolutionary Algorithm for Edge Detection in Image Processing

Frontiers of Mechanical Engineering 2006, Volume 1, Issue 1,   Pages 85-89 doi: 10.1007/s11465-005-0023-6

Abstract: In CIEFCM, a tiny disturbance is added to a filial generation group using a chaos variable and the disturbance

Keywords: disturbance amplitude     disturbance     diversity     generation     processing    

Disturbance rejection via iterative learning controlwith a disturbance observer for active magnetic bearing None

Ze-zhi TANG, Yuan-jin YU, Zhen-hong LI, Zheng-tao DING

Frontiers of Information Technology & Electronic Engineering 2019, Volume 20, Issue 1,   Pages 131-140 doi: 10.1631/FITEE.1800558

Abstract: A disturbance observer based ILC scheme is proposed that consists of a universal extended state observer

Keywords: Active magnetic bearings (AMBs)     Iterative learning control (ILC)     Disturbance observer    

Polycystic ovary syndrome

Zi-Jiang CHEN, Yuhua SHI

Frontiers of Medicine 2010, Volume 4, Issue 3,   Pages 280-284 doi: 10.1007/s11684-010-0098-2

Abstract: Polycystic ovary syndrome (PCOS) is a common gynecologic endocrinopathy. The pathogenesis of PCOS is associated with both heredity and environment. PCOS has adverse impacts on female endocrine, reproduction, and metabolism. PCOS can impact women’s reproductive health, leading to anovulatory infertility and higher rate of early pregnancy loss. PCOS has additional metabolic derangements, such as insulin resistance, impaired glucose tolerance, and dyslipidemia. The risks of diabetes, cardiovascular disease, hypertension, metabolic syndrome, and endometrial cancer among PCOS patients are significantly increased as well.

Keywords: polycystic ovary syndrome     genetics     metabolic disturbance    

Numerical Simulation of Rotor/Stator Interaction in Turbomachinery by Use of a Disturbance Vortex Method

Chen Maozhang,Peng Bo

Strategic Study of CAE 2000, Volume 2, Issue 2,   Pages 15-23

Abstract:

A disturbance vortex method for simulating rotor/stator interaction in turbomachinery was developedaim to lay down a solid mathematical and physical foundation for the disturbance vortex method.and energy transport equations for disturbance motion in a coupled way.the disturbance expansion is taken into consideration.disturbance motion.

Keywords: turbomachinery     rotor/stator interaction     disturbance vortex method     compressible flow     unsteady flow    

Recognition of diamond grains on surface of fine diamond grinding wheel

HUO Fengwei, JIN Zhuji, KANG Renke, GUO Dongming, YANG Chun

Frontiers of Mechanical Engineering 2008, Volume 3, Issue 3,   Pages 325-331 doi: 10.1007/s11465-008-0071-9

Abstract: To recognize diamond grains, digital filtering is used to eliminate the high frequency disturbance from

Keywords: topography     frequency disturbance     filtering     analysis     wavelength    

Fuzzy impedance control of an electro-hydraulic actuator with an extended disturbance observer Regular Papers-Research Articles

Ming-jie LI, Jian-hua WEI, Jin-hui FANG, Wen-zhuo SHI, Kai GUO

Frontiers of Information Technology & Electronic Engineering 2019, Volume 20, Issue 9,   Pages 1221-1233 doi: 10.1631/FITEE.1800155

Abstract: Impedance control and an extended disturbance observer are combined to solve this issue.An extended disturbance observer is employed to account for external disturbances and parameter uncertaintiesA detailed model of load force dynamics is presented for the development of the extended disturbance

Keywords: Fuzzy control     Impedance control     Disturbance observer     Parameter uncertainties     Electro-hydraulic actuator    

Model-based nonlinear control of hydraulic servo systems: Challenges, developments and perspectives

Jianyong YAO

Frontiers of Mechanical Engineering 2018, Volume 13, Issue 2,   Pages 179-210 doi: 10.1007/s11465-018-0464-3

Abstract: uncertainty in hydraulic system is a major challenge, which includes parametric uncertainty and time-varying disturbancerequirements also arise ad hoc difficulties such as nonlinear friction during low velocity tracking, severe disturbance, periodic disturbance, etc.; to handle various challenges, nonlinear solutions including parameter adaptation, nonlinear robust control, state and disturbance observation, backstepping design and so on, are proposed

Keywords: hydraulic servo system     adaptive control     robust control     nonlinear friction     disturbance compensation     repetitive    

High-precision gyro-stabilized control of a gear-driven platform with a floating gear tension device

Frontiers of Mechanical Engineering 2021, Volume 16, Issue 3,   Pages 487-503 doi: 10.1007/s11465-021-0635-5

Abstract: This study presents an improved compound control algorithm that substantially enhances the anti-disturbanceproportional-integral controller is designed to eliminate the steady-state error caused by the time-invariant disturbancemultiple-integral-based state augmented Kalman filter is proposed to estimate and compensate for the time-varying disturbance

Keywords: inertially stabilized platform     floating gear tension device     nonlinear friction     disturbance compensation    

Research on the control systems of a precision linear motor drive device

YAN Han, WANG Xian-kui, DUAN Guang-hong

Frontiers of Mechanical Engineering 2006, Volume 1, Issue 3,   Pages 260-264 doi: 10.1007/s11465-006-0036-9

Abstract: In order to enhance the tracking and anti-disturbance performance of the system, its third-order modelis established, and disturbance-observer based input revising feedforward error compensation robustThe feedback controller improves system tracking performance and suppresses load and mechanical disturbancemethod increases the tracking precision of PLMDD from ±5 μm to ±2 μm and dramatically improves its anti-disturbance

Keywords: feedforward     tracking     ±5     anti-disturbance performance     algorithm    

System construction of a four-side primary permanent-magnet linear motor drive mechanical press

Jintao LIANG, Zhengfeng MING, Peida LI

Frontiers of Mechanical Engineering 2020, Volume 15, Issue 4,   Pages 600-609 doi: 10.1007/s11465-020-0597-z

Abstract: control system scheme is determined in accordance with the mathematical model of PPMLM, and active disturbance

Keywords: mechanical press     direct drive     primary permanent-magnet linear motor (PPMLM)     servo system     active disturbance    

The new design method of the reinforcing bars in the prestressed anchorage plates

Zhang Xiangqun,Lin Bo,Liu Zhao

Strategic Study of CAE 2010, Volume 12, Issue 4,   Pages 82-85

Abstract:

The tooth plate anchorage zones of the prestressed concrete girder bridge bear the anchorage forces and radial forces of prestressed bars and are easy to form cracks or break due to discontinuities in geometry. So the designs of anti-crack bars are critically important. Seven classical tension stress distributions are described in this paper and a model based on strut-and-tie bar theory is constructed to form a novel design method for the prestressed bar design in the anchorage plates.

Keywords: tooth plate anchorage zone     D region (discontinuity or disturbance region)     strut-and-tie model    

Obstacle-circumventing adaptive control of a four-wheeled mobile robot subjected to motion uncertainties

Frontiers of Mechanical Engineering 2023, Volume 18, Issue 3, doi: 10.1007/s11465-023-0753-3

Abstract: Specifically, a novel anti-disturbance terminal slide mode control with adaptive gains is formulated,

Keywords: four-wheeled mobile robot     obstacle-circumventing adaptive control     adaptive anti-disturbance terminal    

MSSSA: a multi-strategy enhanced sparrow search algorithm for global optimization Research Article

Kai MENG, Chen CHEN, Bin XIN

Frontiers of Information Technology & Electronic Engineering 2022, Volume 23, Issue 12,   Pages 1828-1847 doi: 10.1631/FITEE.2200237

Abstract: The (SSA) is a recent meta-heuristic optimization approach with the advantages of simplicity and flexibility. However, SSA still faces challenges of premature convergence and imbalance between exploration and exploitation, especially when tackling multimodal . Aiming to deal with the above problems, we propose an enhanced variant of SSA called the multi-strategy enhanced (MSSSA) in this paper. First, a chaotic map is introduced to obtain a high-quality initial population for SSA, and the opposition-based learning strategy is employed to increase the population diversity. Then, an is designed to accommodate an adequate balance between exploration and exploitation. Finally, a is embedded in the individual update stage to avoid falling into local optima. To validate the effectiveness of the proposed MSSSA, a large number of experiments are implemented, including 40 complex functions from the IEEE CEC2014 and IEEE CEC2019 test suites and 10 classical functions with different dimensions. Experimental results show that the MSSSA achieves competitive performance compared with several state-of-the-art optimization algorithms. The proposed MSSSA is also successfully applied to solve two engineering . The results demonstrate the superiority of the MSSSA in addressing practical problems.

Keywords: Swarm intelligence     Sparrow search algorithm     Adaptive parameter control strategy     Hybrid disturbance    

Title Author Date Type Operation

Modal disturbance investigation of rod-shaped ultrasonic motor using bending vibrations

ZHANG Jiantao, ZHU Hua, ZHAO Chunsheng

Journal Article

Virtual reality system of manned maneuvering unit taking into consideration the disturbance from an astronaut

CHENG Jian, FAN Xiu-min, XU An, HONG Xin, HUANG Wei-dong

Journal Article

Application of a Novel Fuzzy Clustering Method Based on Chaos Immune Evolutionary Algorithm for Edge Detection in Image Processing

Journal Article

Disturbance rejection via iterative learning controlwith a disturbance observer for active magnetic bearing

Ze-zhi TANG, Yuan-jin YU, Zhen-hong LI, Zheng-tao DING

Journal Article

Polycystic ovary syndrome

Zi-Jiang CHEN, Yuhua SHI

Journal Article

Numerical Simulation of Rotor/Stator Interaction in Turbomachinery by Use of a Disturbance Vortex Method

Chen Maozhang,Peng Bo

Journal Article

Recognition of diamond grains on surface of fine diamond grinding wheel

HUO Fengwei, JIN Zhuji, KANG Renke, GUO Dongming, YANG Chun

Journal Article

Fuzzy impedance control of an electro-hydraulic actuator with an extended disturbance observer

Ming-jie LI, Jian-hua WEI, Jin-hui FANG, Wen-zhuo SHI, Kai GUO

Journal Article

Model-based nonlinear control of hydraulic servo systems: Challenges, developments and perspectives

Jianyong YAO

Journal Article

High-precision gyro-stabilized control of a gear-driven platform with a floating gear tension device

Journal Article

Research on the control systems of a precision linear motor drive device

YAN Han, WANG Xian-kui, DUAN Guang-hong

Journal Article

System construction of a four-side primary permanent-magnet linear motor drive mechanical press

Jintao LIANG, Zhengfeng MING, Peida LI

Journal Article

The new design method of the reinforcing bars in the prestressed anchorage plates

Zhang Xiangqun,Lin Bo,Liu Zhao

Journal Article

Obstacle-circumventing adaptive control of a four-wheeled mobile robot subjected to motion uncertainties

Journal Article

MSSSA: a multi-strategy enhanced sparrow search algorithm for global optimization

Kai MENG, Chen CHEN, Bin XIN

Journal Article