Control of a Magnetostrictive-Actuator-Based Micromachining System for Optimal High-Speed Microforming Process

PROJECT TITLE :

Control of a Magnetostrictive-Actuator-Based Micromachining System for Optimal High-Speed Microforming Process

ABSTRACT:

During this paper, the method control of a magnetostrictive-actuator-based mostly microforming system is studied. Microforming has recently become an rising advanced manufacturing technique for fabricating miniaturized product for applications including medical devices and microelectronics. Significantly, miniaturized desktop microforming systems based mostly on unconventional actuators possess great potential in each high productivity and low value. Process control of those miniaturized microforming systems, but, is challenging and still at its early stage. The challenge arises from the difficult behaviors of the actuators used, the switching and therefore the transition involved within the actuation/motion, and therefore the uncertainty of the system dynamics during the entire microforming method. The dynamics and therefore the hysteresis effects of the magnetostrictive actuator will be excited, ensuing in positioning errors of the workpiece throughout each the trajectory tracking and therefore the output transition phases. The speedy tracking-transition switching is additionally accompanied with substantial variation of the system dynamics. Moreover, the process control is any sophisticated by the employment of multistage actuators and the augmentation of ultrasonic vibrations to the microforming process. During this paper, a management framework integrating iterative learning management and an optimal transition trajectory style along with feedforward–feedback control is proposed to realize high-speed, high-quality microforming. The efficacy of the proposed management approach is demonstrated through experiments.

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