Numerical Evaluation and Experimental Test on a New Giant Magnetostrictive Transducer with Low Heat Loss Design

Abstract

Giant magnetostrictive transducer with micro and nano precision has a wide application prospect in the field of remote sensing. However, excessive heat loss of components could generate during the energy conversion and transfer from electric energy to magnetic energy, and magnetic energy to mechanical energy, thereby affecting its long-term service and also reducing energy utilization. In this paper, a new magnetostrictive transducer is proposed and its excitation coil, internal and external magnetic circuit are optimized from the perspective of reducing heat loss. With the help of theoretical and finite element analysis, the response law between key parameters and heat loss of key components are summarized, which provides a basis for reducing heat loss. Finally, according to the optimization scheme, the prototype is processed, and the temperature rise and dynamic output performance of the transducer are tested by constructing an experimental setup. The results show that the transducer has a low temperature rise and good frequency response characteristics, which can provide support for long-time precise actuation on-orbit.

Physics-based modeling and multi-objective parameter optimization of excitation coil for giant magnetostrictive actuator used on fuel injector

“…12 In addition, Fan et al propose optimization methods intended to minimize the power consumption utilizing shape factors, while Bai et al design parallel coil with heat loss by decreasing the coupling inductance. 13,14 Several useful conclusions are drawn in these publications, which can provide some general roadmaps to conduct excitation coil design and optimization. 15,16 However, compared with other application conditions, GMA for ECI is a little different, for the magnetic field intensity uniformity and energy efficiency are usually not the most important indices to evaluate the output performance of this kind of actuator but the response speed.…”

“…12 In addition, Fan et al propose optimization methods intended to minimize the power consumption utilizing shape factors, while Bai et al design parallel coil with heat loss by decreasing the coupling inductance. 13,14 Several useful conclusions are drawn in these publications, which can provide some general roadmaps to conduct excitation coil design and optimization. 15,16…”

Thermal Analysis of Terfenol-D Rods with Different Structures

“…Ma et al [ 13 ] presented a novel rotatable giant magnetostrictive transducer in which the excitation coil is fixed and the Terfenol-D rod in the rotary part is excited by the magnetic field; this transducer worked well with much improved ultrasonic vibration stability compared with the traditional transducer. Bai et al [ 14 ] proposed a new design for a giant magnetostrictive transducer with low heat loss. The finite element software was used to design and analyze the internal and external yoke and heat transfer structure, and the results show that the transducer has a low temperature rise.…”

Modeling of Magnetoelectric Microresonator Using Numerical Method and Simulated Annealing Algorithm

“…While piezoelectric materials exhibit remarkable capabilities, scholarly interest in magnetostrictive materials has surged, particularly because of their wireless excitation potential in displacement actuators [10]. The combination of magnetostrictive and piezoelectric Micromachines 2023, 14, 1878 2 of 21 layers in magnetoelectric composites enables simultaneous magnetic and charge ordering capabilities.…”