Modeling and analysis of mover gaps in tubular moving-magnet linear oscillating motors

Luo, Xuesong; Zhang, Chao; Wang, Shaoping; Zio, Enrico; Wang, Xingjian

doi:10.1016/j.cja.2017.11.008

Cited by 4 publications

(3 citation statements)

References 32 publications

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“…Where BI 0 and BI 1 are modified Bessel functions of the first kind, BK 0 and BK 1 are modified Bessel functions of the second kind of orders 0 and 1 respectively, n is the harmonic order, the values of a n1 and b n1 are shown in reference [33], and the coefficient m n is equal to…”

Section: Nonlinear Magnetic Field Analysismentioning

confidence: 99%

See 1 more Smart Citation

Nonlinear electromagnetic force analysis and compensation control of electromagnetic linear actuator

Yu,

Tan,

Yan

et al. 2023

Phys. Scr.

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Nonlinear electromagnetic force is a common phenomenon in electromagnetic linear actuators (EMLA). This nonlinearity limits the application in high-precision control systems. For facilitating the controller design, the influencing factors of nonlinear electromagnetic force were analyzed, and the quadratic polynomial with unknown weights was designed to approximate the nonlinear relationship among electromagnetic force, excitation current and displacement. An adaptive integral robust control algorithm based on electromagnetic force compensation (AIRC-FC) was designed, which combined the adaptive control law of electromagnetic force nonlinear compensation, stable feedback and error signal continuous integral robust control. The tracking performance and the adaptability of the EMLA with and without compensation control were analyzed under different loads. The results show that AIRC-FC improve the tracking performance of the EMLA effectively, and maintain high control accuracy under different loads.

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Section: Nonlinear Magnetic Field Analysismentioning

confidence: 99%

“…Zhang et al proposed a linear motor with trapezoidal permanent magnets and the design was optimized by using genetic algorithm [15]. Although the nonlinear electromagnetic force of EMLA has been greatly reduced by the improvement of its structure, such nonlinear factors cannot be completely eliminated [16].…”

Section: Introductionmentioning

confidence: 99%

Nonlinear electromagnetic force analysis and compensation control of electromagnetic linear actuator

Yu,

Tan,

Yan

et al. 2023

Phys. Scr.

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“…Force fluctuations occurring in a linear motor feed system are a topical issue that affect the accuracy of system operation. Attempts are made to solve it by applying various algorithms; from the magnetic field model of the peranent magnet air gap [13], the model of permanent magnetic linear synchronous motors (PMLSM) [14], the equivalent circuit model obtained by theoretical analysis [15,16], the conformal mapping (CM) method for determining torque [17,18], PMLSM analysis method [14], multiple changes of traction harmonics of different motion parameters [19], development of compensation control strategies to improve traction oscillations as a periodic disturbance compensation strategy [20], force wave compensation strategy [21] and a comprehensive strategy for trinities, disturbances and surges [22,23]. To maintain the dynamic stability of the linear stage and its static error at its minimum, it is required to calibrate static error by optical methods and tune the transfer function in frequency domain.…”

Section: Introductionmentioning

confidence: 99%

Investigation of X and Y Configuration Modal and Dynamic Response to Velocity Excitation of the Nanometer Resolution Linear Servo Motor Stage with Quasi-Industrial Guiding System in Quasi-Stable State

et al. 2021

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Research institutions and industrial enterprises demand high accuracy and precision positioning systems to fulfil cutting edge requirements of up-to-date technological processes in the field of metrology and optical fabrication. Linear motor system design with high performance mechanical guiding system and optical encoder ensures nanometer scale precision and constant static error, which can be calibrated by optical instruments. Mechanical guiding systems has its benefits in case of control theory and its stability; unfortunately, on the other hand, there exists high influence of structure geometry and tribological effects such as friction and modal response. The aforementioned effect cannot be straightforwardly identified during the assembly process. Degradation of dynamic units can be detected only after certain operating time. Single degree of freedom systems are well investigated and the effect of degradation can be predicted, but there exists a gap in the analysis of nanometer scale multi degree of freedom dynamic systems; therefore, novel diagnostic tools need to be proposed. In this particular paper, dual axes dynamic system analysis will be presented. The main idea is to decouple standard stacked XY stage and analyse X and Y configuration as two different configurations of the same object, while imitators of corresponding axes are absolutely solid and stationary. As storage and analysis of time domain data is not efficient, main attention will be concentrated on frequency domain data, while, of course, statistical and graphical representation of dynamic response will be presented. Transfer function, dynamic response, spectral analysis of dynamic response, and modal analysis will be presented and discussed. Based on the collected data and its analysis, comparison of X and Y responses to different velocity excitation will be presented. Finally, conclusions and recommendations of novel diagnostic way will be presented.

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Optimization method for a moving-coil electromagnetic linear actuator using an improved Macaca thibetana behavior-based hierarchical GA–PSO algorithm

Wang

Lyu

Gao

et al. 2022

Struct Multidisc Optim

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Modeling and analysis of mover gaps in tubular moving-magnet linear oscillating motors

Cited by 4 publications

References 32 publications

Nonlinear electromagnetic force analysis and compensation control of electromagnetic linear actuator

Nonlinear electromagnetic force analysis and compensation control of electromagnetic linear actuator

Investigation of X and Y Configuration Modal and Dynamic Response to Velocity Excitation of the Nanometer Resolution Linear Servo Motor Stage with Quasi-Industrial Guiding System in Quasi-Stable State

Optimization method for a moving-coil electromagnetic linear actuator using an improved Macaca thibetana behavior-based hierarchical GA–PSO algorithm

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