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research-article

A New Design of Horizontal Electro-Vibroimpact Devices

[+] Author and Article Information
Van-Du Nguyen

Mechanical Engineering Faculty, Thai Nguyen University of Technology, 3/2 street, Thai Nguyen city, Viet Nam
vandu@tnut.edu.vn

Huu-Cong Nguyen

Electronic Engineering Faculty, Thai Nguyen University of Technology, 3/2 street, Thai Nguyen city, Viet Nam
conghn@tnu.edu.vn

Nhu-Khoa Ngo

Mechanical Engineering Faculty, Thai Nguyen University of Technology, 3/2 street, Thai Nguyen city, Viet Nam
khoann@tnut.edu.vn

Ngoc-Tuan La

Manufacturing Faculty, Vinh University of Technology Education, Viet Nam, No.117, Nguyen Viet Xuan street, Vinh city, Nghe An, Viet Nam
langoctuan.ktv@gmail.com

1Corresponding author.

ASME doi:10.1115/1.4035933 History: Received August 15, 2016; Revised January 28, 2017

Abstract

This paper presents a development in design, mathematical modeling and experimental study of a vibro-impact moling device which was invented by the author before. A vibratory unit deploying electro-mechanical interactions of a conductor with oscillating magnetic field has been realized and developed. The combination of resonance in an RLC circuit including a solenoid is found to create a relative oscillatory motion between the metal bar and the solenoid. This results in impacts of the solenoid on an obstacle block, which causes the forward motion of the system. Compared to the former model which employs impact from the metal bar, the improved rig can offer a higher progression rate of six times when using the same power supply. The novel geometrical arrangement allows for future optimization in terms of system parametric selection and adaptive control. This implies a very promising deployment of the mechanism in ground moling machines as well as other self-propelled mobile systems. In this paper, insight to the design development based on physical and mathematical models of the rig is presented. Then the obtained coupled electro-mechanical equations of motion are solved numerically, and a comparison between experimental results and numerical predictions is presented.

Copyright (c) 2017 by ASME
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