Giant magnetostrictive clamping mechanism for heavy-load and precise positioning linear inchworm motors

Yang, Bintang; Meng, Guang; Feng, Zhi-Qiang; Yang, Dehua

doi:10.1016/j.mechatronics.2010.08.011

Cited by 21 publications

(5 citation statements)

References 13 publications

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“…The magnetic field H , axial strain ɛ , and stress σ distribute throughout the GMM rod uniformly. 10,11…”

Section: Displacement Model Of the Actuatormentioning

confidence: 99%

“…The magnetic field H, axial strain ", and stress distribute throughout the GMM rod uniformly. 10,11 The giant magnetostrictive rod is processed as a mass-spring-damper device and the SBA could be modeled as a linear time-invariant system just as shown in Figure 5. Concluded from the vibration theory, the equation of motion of the actuator is written as…”

Section: Displacement Model Of the Actuatormentioning

confidence: 99%

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Displacement model of the giant magnetostrictive actuator with strong bias magnetic field at low frequency

Xue

Zhang

Zhao

et al. 2016

Proceedings of the Institution of Mechanical Engineers, Part C:

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A giant magnetostrictive actuator is designed with strong bias magnetic field. The influence of the strong bias field is introduced, and the corresponding exciting input signal is selected. Magnetic reluctance estimation, approximate linearity between the strain and magnetic field, and a mass–spring–damper system assumption are employed to analyze the actuator’s displacement with low-frequency signal input. An experimental system is designed, and properties of the proposed actuator are tested. With the help of square wave test, appropriate direction of exciting signal for the magnetostrictive actuator is determined. With the help of sinusoidal wave test, the established model is validated and the relationship between the maximum value of the displacement and of the current is analyzed. With exciting frequency lower than 200 Hz, the errors between the calculating and testing results are within 1.0 m, which validates the model.

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“…The magnetic field H , axial strain ɛ , and stress σ distribute throughout the GMM rod uniformly. 10,11…”

Section: Displacement Model Of the Actuatormentioning

confidence: 99%

Section: Displacement Model Of the Actuatormentioning

confidence: 99%

Displacement model of the giant magnetostrictive actuator with strong bias magnetic field at low frequency

Xue

Zhang

Zhao

et al. 2016

Proceedings of the Institution of Mechanical Engineers, Part C:

View full text Add to dashboard Cite

show abstract

“…Currently, the most commonly used magnetic field strength model was the reluctance model. 5–12 This model is based on the principle that high-permeability material can occupy most of the magnetic flux. 13 In this model, the closed magnetic circuit is established just like an electric circuit.…”

Section: Introductionmentioning

confidence: 99%

Revised reluctance model of the axial magnetic field intensity within giant magnetostrictive rod

Xue

Zhang

Zhao

et al. 2016

Proceedings of the Institution of Mechanical Engineers, Part C:

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A theoretical magnetic field intensity model within giant magnetostrictive material was presented. This model was established just like the reluctance model, while could describe the non-uniform distribution flexibly for its integral form. This model employed magnetic circuit theorem calculating the mean of the magnetic field, while used a normalized function describing the distributing character. The distributing function was determined by Biot–Savart law and relative permeability of the material. The model was validated with the help of the experimental device. At last, the fitting degree of the model with the tested results in predicting the performance of the actuator is researched.

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“…Actuators developed from GMM have a large loading capacity and large output displacement amplitude, which allow them to be successfully applied in industries such as high-power sonar system [12] and underwater transducers [13]. The applications of GMM in precision positioning were also reported [14,15]. Moreover, it was also proposed to use GMM for force sensing purposes [16].…”

Section: Introductionmentioning

confidence: 99%

Vibration Suppression Evaluation of Smart Journal Bearing Using Giant Magnetostrictive Actuators

Wang

Cai

et al. 2015

KEM

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A new kind of smart hydrodynamic journal bearings with giant magnetostrictive actuators (GMA) is introduced. The static and dynamic displacement outputs of the designed GMA are up to tens of microns, about the same order of magnitude as the conventional journal bearing clearance. Vibration suppression of the new smart journal bearing is theoretically evaluated using a simple Jeffcott rotor-bearing system. Kinematic equations are set up including the magneto-mechanical coupling model for GMA. The bearing oil film force under large vibration is calculated using a fast and efficient non-stationary oil film database technique. The unbalance vibration orbit of the rotor center is simulated. A simple synchronous proportional control method for GMA with different control phases and gains is investigated. The suppress effect of unbalance vibration and improvement of oil whip unstable speed is evaluated. The simulation proves that the new journal bearing has better stability, and that rotor vibration can be actively suppressed.

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Giant magnetostrictive clamping mechanism for heavy-load and precise positioning linear inchworm motors

Cited by 21 publications

References 13 publications

Displacement model of the giant magnetostrictive actuator with strong bias magnetic field at low frequency

Displacement model of the giant magnetostrictive actuator with strong bias magnetic field at low frequency

Revised reluctance model of the axial magnetic field intensity within giant magnetostrictive rod

Vibration Suppression Evaluation of Smart Journal Bearing Using Giant Magnetostrictive Actuators

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