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Electrorheological damper for the ultra-precision air bearing stage

ZHU Yu, JIA Songtao, CHEN Yaying, LI Guang

Frontiers of Mechanical Engineering 2008, Volume 3, Issue 2,   Pages 158-163 doi: 10.1007/s11465-008-0031-4

Abstract: Meanwhile, the ultra-precision air bearing stage driven by the linear-motor is characterized by zero

Keywords： post-yield     linear-motor     advanced sliding     pre-yield     position    

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Design and analysis of linear oscillating motor for linear pump application-magnetic field, dynamics

Zongxia JIAO,Tianyi WANG,Liang YAN

Frontiers of Mechanical Engineering 2016, Volume 11, Issue 4,   Pages 351-362 doi: 10.1007/s11465-016-0407-9

Abstract:

A linear oscillating motor is an electromagnetic actuator that can achieve short-stroke reciprocatingIt has been widely used in linear pump applications as the source of power and motion.However, because of the demand of high power density in a linear actuation system, the performance ofIn this paper, a general framework of linear oscillating motor design and optimization is addressed inlinear pump applications.

Keywords： linear oscillating motor     linear pump     magnetic field     motor optimization    

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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: A primary permanent-magnet linear motor (PPMLM) has a robust secondary structure and high force density

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

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Linear ultrasonic motor using quadrate plate transducer

Jiamei JIN, Chunsheng ZHAO

Frontiers of Mechanical Engineering 2009, Volume 4, Issue 1,   Pages 88-91 doi: 10.1007/s11465-009-0016-y

Abstract: A linear ultrasonic motor using a quadrate plate transducer was developed for precision positioning.This motor consists of two pairs of Pb(Zr,Ti)O piezoelectric ceramic elements, which are piezoelectricallyexcited into the second-bending mode of the motor stator’s neutral surface in two orthogonal directionsfour projections move along an elliptical trajectory, which in turn drives a contacted slider into linearThe performance characteristics achieved by the motor are: 1) a maximum linear speed of more than 60

Keywords： ultrasonic motor     quadrate plate     coincident frequency     alternant contact    

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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: The model of a precision linear motor drive device (PLMDD) and its control requirements are analyzed.

Keywords： feedforward     tracking     ±5     anti-disturbance performance     algorithm    

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Ultrasonic linear motor using the L-B mode Langevin transducer with an exponential horn

SHI Shengjun, CHEN Weishan, LIU Junkao, ZHAO Xuetao

Frontiers of Mechanical Engineering 2008, Volume 3, Issue 2,   Pages 212-217 doi: 10.1007/s11465-008-0026-1

Abstract: An ultrasonic linear motor is proposed and fabricated by using the longitudinal and bending vibration

Keywords： longitudinal     vibration     bolt-clamped     semiconductor     ultrasonic    

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Research on the Longitudinal End Effect ofSingle Linear Induction Motor

Xu Wei,Sun Guangsheng

Strategic Study of CAE 2007, Volume 9, Issue 3,   Pages 21-27

Abstract: Because of its discontinuous magnetic circuit, the motor has transverse and longitudinal end effects.There are eddy currents, which become greater as motor spread increases, occurring in both entrance andestablishes SLIM control equations connected with the rotor-flux oriented(RFO)vector control theory in rotary motorreduces the torque ripple and makes the stator currents flat, speed smooth during the sudden change in motor

Keywords： single linear induction motor(SLIM)     rotor-flux oriented(RFO)control     end effect     decouple control     accommodation    

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Research on the equivalent circuit parameter　of single linear induction motor

Xu Wei,Sun Guangsheng

Strategic Study of CAE 2008, Volume 10, Issue 8,   Pages 76-80

Abstract:

The SLIM parameter has clear error to its real value on the base of the RIM parameter measurement method because it has larger air gap and edge effect. This paper proposes a new scheme suited for SLIM parameter detection. It only needs input total power, phase voltage, phase current, frequency, and then computes primary resistance, primary leakage induction, secondary resistance, secondary leakage induction, air induction and iron loss resistance. The performance analysis of SLIM indicates that this method is very effective and valuable.

Keywords： single linear induction motor     open-secondary circuit experiment     blocked-secondary circuit experiment    

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Observer design for induction motor: an approach based on the mean value theorem

Mohamed Yacine HAMMOUDI,Abdelkarim ALLAG,Mohamed BECHERIF,Mohamed BENBOUZID,Hamza ALLOUI

Frontiers in Energy 2014, Volume 8, Issue 4,   Pages 426-433 doi: 10.1007/s11708-014-0314-x

Abstract: In this paper, observer design for an induction motor has been investigated.To transform the nonlinear error dynamics for the induction motor into the linear parametric varyingStability conditions based on the Lyapunov function lead to solvability of a set of linear matrix inequalities

Keywords： observer design     differential mean value theorem (DMVT)     sector nonlinearity transformation     linear matrixinequalities (LMI)     induction motor    

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Classical state feedback controller for nonlinear systems using mean value theorem: closed loop-FOC of PMSM motor

Abrar ALLAG,Abdelhamid BENAKCHA,Meriem ALLAG,Ismail ZEIN,Mohamed Yacine AYAD

Frontiers in Energy 2015, Volume 9, Issue 4,   Pages 413-425 doi: 10.1007/s11708-015-0379-1

Abstract: nonlinear error dynamics as a convex combination of known matrices with time varying coefficients as linearUsing the Lyapunov theory, stability conditions are obtained and expressed in terms of linear matrixThe controller gains are then obtained by solving linear matrix inequalities.

Keywords： Takagi-Sugeno (T-S) fuzzy systems     sector nonlinearity     nonlinear controller     linear matrix inequality (LMI) approach     differential mean value theorem (DMVT)     field oriented control (FOC)     linear parameter varying    

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Mechatronic design of a novel linear compliant positioning stage with large travel range and high out-of-plane

Hua LIU, Xin XIE, Ruoyu TAN, Lianchao ZHANG, Dapeng FAN

Frontiers of Mechanical Engineering 2017, Volume 12, Issue 2,   Pages 265-278 doi: 10.1007/s11465-017-0453-y

Abstract: In this study, a 2-degree-of-freedom linear compliant positioning stage (LCPS) is developed by mechatronic

Keywords： mechatronic design     linear compliant positioning stage     large travel range     high out-of-plane payload capacity     spatial parallelogram     voice coil motor     sensitivity analysis    

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modified neural learning algorithm for online rotor resistance estimation in vector controlled induction motor

A. CHITRA,S. HIMAVATHI

Frontiers in Energy 2015, Volume 9, Issue 1,   Pages 22-30 doi: 10.1007/s11708-014-0339-1

Abstract: Online estimation of rotor resistance is essential for high performance vector controlled drives. In this paper, a novel modified neural algorithm has been identified for the online estimation of rotor resistance. Neural based estimators are now receiving active consideration as they have a number of advantages over conventional techniques. The training algorithm of the neural network determines its learning speed, stability, weight convergence, accuracy of estimation, speed of tracking and ease of implementation. In this paper, the neural estimator has been studied with conventional and proposed learning algorithms. The sensitivity of the rotor resistance change has been tested for a wide range of variation from -50% to+50% on the stability of the drive system with and without estimator. It is quiet appealing to settle with optimal estimation time and error for the viable realization. The study is conducted extensively for estimation and tracking. The proposed learning algorithm is found to exhibit good estimation and tracking capabilities. Besides, it reduces computational complexity and, hence, more feasible for practical digital implementation.

Keywords： neural networks     back propagation (BP)     rotor resistance estimators     vector control     induction motor    

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Review of human–robot coordination control for rehabilitation based on motor function evaluation

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 2, doi: 10.1007/s11465-022-0684-4

Abstract: As a wearable and intelligent system, a lower limb exoskeleton rehabilitation robot can provide auxiliary rehabilitation training for patients with lower limb walking impairment/loss and address the existing problem of insufficient medical resources. One of the main elements of such a human–robot coupling system is a control system to ensure human–robot coordination. This review aims to summarise the development of human–robot coordination control and the associated research achievements and provide insight into the research challenges in promoting innovative design in such control systems. The patients’ functional disorders and clinical rehabilitation needs regarding lower limbs are analysed in detail, forming the basis for the human–robot coordination of lower limb rehabilitation robots. Then, human–robot coordination is discussed in terms of three aspects: modelling, perception and control. Based on the reviewed research, the demand for robotic rehabilitation, modelling for human–robot coupling systems with new structures and assessment methods with different etiologies based on multi-mode sensors are discussed in detail, suggesting development directions of human–robot coordination and providing a reference for relevant research.

Keywords： human–robot coupling     lower limb rehabilitation     exoskeleton robot     motor assessment     dynamical model    

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Comparison between linear and non-linear forms of pseudo-first-order and pseudo-second-order adsorption

Junxiong LIN , Lan WANG ,

Frontiers of Environmental Science & Engineering 2009, Volume 3, Issue 3,   Pages 320-324 doi: 10.1007/s11783-009-0030-7

Abstract: The best-fit equations of linear and non-linear forms of the two widely used kinetic models, namely pseudo-first-orderThe results show that the non-linear forms of pseudo-first-order and pseudo-second-order models weremore suitable than the linear forms for fitting the experimental data.The experimental kinetics may have been distorted by linearization of the linear kinetic equations, andthus, the non-linear forms of kinetic equations should be primarily used to obtain the adsorption parameters

Keywords： adsorption     pseudo-first order     pseudo-second order     kinetic model     linear method     non-linear method    

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Estimation of composite load model with aggregate induction motor dynamic load for an isolated hybrid

Nitin Kumar SAXENA,Ashwani Kumar SHARMA

Frontiers in Energy 2015, Volume 9, Issue 4,   Pages 472-485 doi: 10.1007/s11708-015-0373-7

Abstract: It is well recognized that the voltage stability of a power system is affected by the load model and hence, to effectively analyze the reactive power compensation of an isolated hybrid wind-diesel based power system, the loads need to be considered along with the generators in a transient analysis. This paper gives a detailed mathematical modeling to compute the reactive power response with small voltage perturbation for composite load. The composite load is a combination of the static and dynamic load model. To develop this composite load model, the exponential load is used as a static load model and induction motors (IMs) are used as a dynamic load model. To analyze the dynamics of IM load, the fifth, third and first order model of IM are formulated and compared using differential equations solver in Matlab coding. Since the decentralized areas have many small consumers which may consist large numbers of IMs of small rating, it is not realistic to model either a single large rating unit or all small rating IMs together that are placed in the system. In place of using a single large rating IM, a group of motors are considered and then the aggregate model of IM is developed using the law of energy conservation. This aggregate model is used as a dynamic load model. For different simulation studies, especially in the area of voltage stability with reactive power compensation of an isolated hybrid power system, the transfer function of the composite load is required. The transfer function of the composite load is derived in this paper by successive derivation for the exponential model of static load and for the fifth and third order IM dynamic load model using state space model.

Keywords： isolated hybrid power system (IHPS)     composite load model     static load     dynamic load     induction motor load    

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Title Author Date Type Operation

Electrorheological damper for the ultra-precision air bearing stage

ZHU Yu, JIA Songtao, CHEN Yaying, LI Guang

Journal Article

Design and analysis of linear oscillating motor for linear pump application-magnetic field, dynamics

Zongxia JIAO,Tianyi WANG,Liang YAN

Journal Article

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

Jintao LIANG, Zhengfeng MING, Peida LI

Journal Article

Linear ultrasonic motor using quadrate plate transducer

Jiamei JIN, Chunsheng ZHAO

Journal Article

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

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

Journal Article

Ultrasonic linear motor using the L-B mode Langevin transducer with an exponential horn

SHI Shengjun, CHEN Weishan, LIU Junkao, ZHAO Xuetao

Journal Article

Research on the Longitudinal End Effect ofSingle Linear Induction Motor

Xu Wei,Sun Guangsheng

Journal Article

Research on the equivalent circuit parameter　of single linear induction motor

Xu Wei,Sun Guangsheng

Journal Article

Observer design for induction motor: an approach based on the mean value theorem

Mohamed Yacine HAMMOUDI,Abdelkarim ALLAG,Mohamed BECHERIF,Mohamed BENBOUZID,Hamza ALLOUI

Journal Article

Classical state feedback controller for nonlinear systems using mean value theorem: closed loop-FOC of PMSM motor

Abrar ALLAG,Abdelhamid BENAKCHA,Meriem ALLAG,Ismail ZEIN,Mohamed Yacine AYAD

Journal Article

Mechatronic design of a novel linear compliant positioning stage with large travel range and high out-of-plane

Hua LIU, Xin XIE, Ruoyu TAN, Lianchao ZHANG, Dapeng FAN

Journal Article

modified neural learning algorithm for online rotor resistance estimation in vector controlled induction motor

A. CHITRA,S. HIMAVATHI

Journal Article

Review of human–robot coordination control for rehabilitation based on motor function evaluation

Journal Article

Comparison between linear and non-linear forms of pseudo-first-order and pseudo-second-order adsorption

Junxiong LIN , Lan WANG ,

Journal Article

Estimation of composite load model with aggregate induction motor dynamic load for an isolated hybrid

Nitin Kumar SAXENA,Ashwani Kumar SHARMA

Journal Article