Design and validation of outer rotor magnetorheological brake with multiple poles. (May 2014)

• Record Type: Journal Article
• Authors: Shiao, Y.; Nguyen, Q.-A.; Huang, G.-D.
• Is Part Of: Materials research innovations. Volume 18:Number 3(2014)
• Page Start: S16
• Page End: S21
• Publication Date: 2014-05
• Subjects: Materials -- Research -- Periodicals; Matériaux -- Recherche -- Périodiques; 620.1105
• DOI: 10.1179/1432891714Z.000000000593
• Languages: English
• ISSNs: 1432-8917

Abstract

<abstract> <title> <x content-type="archive" xml:space="preserve">Abstract</x> </title> <p>A magnetorheological brake with multiple poles and an outer rotor structure is introduced in this paper. It is designed to be used as a resistant source for bicycle training equipment. The outer rotor structures works as a roller against the bike rear wheel for indoor exercise. The key factors to affect the brake torque were found after an analysis of the magnetic circuit of the brake. Two structures with different pole numbers were simulated to find the optimal one which harmonises between the maximum output torque and the input power. Simulation results confirm the feasibility of the outer rotor magnetorheological brake concept. The optimal brake was later manufactured and experimented for validation. Its torque can be controlled precisely by an input current with a very fast response. The maximum brake torque is 5 Nm at a 0·9 A input current. Those phenomena are applicable for the bicycle training equipment. Moreover, the compact design of the brake shows advantages in weight and space reductions.</p> </abstract>