Design and simulation of a new bidirectional actuator for haptic systems featuring MR fluid

Nguyen Quoc Hung; Diep Bao Tri; Vo Van Cuong; Seung-Bok Choi

doi:10.1117/12.2259752

11 April 2017 Design and simulation of a new bidirectional actuator for haptic systems featuring MR fluid

Nguyen Quoc Hung, Diep Bao Tri, Vo Van Cuong, Seung-Bok Choi

Proceedings Volume 10164, Active and Passive Smart Structures and Integrated Systems 2017; 101641O (2017) https://doi.org/10.1117/12.2259752
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2017, Portland, Oregon, United States

Abstract

In this research, a new configuration of bidirectional actuator featuring MR fluid (BMRA) is proposed for haptic application. The proposed BMRA consists of a driving disc, a driving housing and a driven disc. The driving disc is placed inside the driving housing and rotates counter to each other by a servo DC motor and a bevel gear system. The driven shaft is also placed inside the housing and next to the driving disc. The gap between the two disc and the gap between the discs and the housing are filled with MR fluid. On the driven disc, two mutual magnetic coils are placed. By applying currents to the two coils mutually, the torque at the output shaft, which is fixed to the driven disc, can be controlled with positive, zero or negative value. This make the actuator be suitable for haptic application. After a review of MR fluid and its application, configuration of the proposed BMRA is presented. The modeling of the actuator is then derived based on Bingham rheological model of MRF and magnetic finite element analysis (FEA). The optimal design of the actuator is then performed to minimize the mass of the BMRA. From the optimal design result, performance characteristics of the actuator is simulated and detailed design of a prototype actuator is conducted.

Citation Download Citation

Nguyen Quoc Hung, Diep Bao Tri, Vo Van Cuong, and Seung-Bok Choi "Design and simulation of a new bidirectional actuator for haptic systems featuring MR fluid", Proc. SPIE 10164, Active and Passive Smart Structures and Integrated Systems 2017, 101641O (11 April 2017); https://doi.org/10.1117/12.2259752

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KEYWORDS

Actuators

Magnetorheological finishing

Haptic technology

Magnetism

Prototyping

Manufacturing

Finite element methods

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