The continuously variable transmission (CVT) is a type of transmission that can adopt any arbitrary gear ratio. Whereas typical transmissions utilize toothed gears, the CVT employs a sphere in rolling contact with a set of rollers; loads applied to the CVT are supported across these rolling contacts, resulting in microslips of varying amounts at each contact area. In this paper, we describe the causes of microslips in the CVT and ways to lessen them through an alternative CVT design.
1.
Peshkin
, M. A.
, Colgate
, J. E.
, Wannasuphoprasit
, W.
, Moore
, C. A.
, and Gillespie
, R. B.
, 2001, “Cobot Architecture
,” IEEE Trans. Rob. Autom.
1042-296X, 17
(4
), pp. 377
–390
.2.
Moore
, C. A.
, 1997, “Continuously Variable Transmission for Serial Link Cobot Architecture
,” MS thesis, Northwestern University, Evanston, IL.3.
Moore
, C. A.
, Peshkin
, M. A.
, and Colgate
, J. E.
, 2003, “Cobot Implementation of Virtual Paths and 3D Virtual Surfaces
,” IEEE Trans. Rob. Autom.
1042-296X, 19
(2
), pp. 347
–351
.4.
Akehurst
, S.
, Parker
, D. A.
, and Schaaf
, S.
, 2006, “CVT Rolling Traction Drives—A Review of Research Into Their Design, Functionality, and Modeling
,” ASME J. Mech. Des.
1050-0472, 128
(5
), pp. 1165
–1176
.5.
Gillespie
, R. B.
, Moore
, C. A.
, Peshkin
, M. A.
, and Colgate
, J. E.
, 2002, “Kinematic Creep in a Continuously Variable Transmission: Traction Drive Mechanics for Cobots
,” ASME J. Mech. Des.
1050-0472, 124
(4
), pp. 713
–722
.6.
Brokowski
, M.
, Kim
, S.
, Colgate
, J. E.
, Gillespie
, R.
, and Peshkin
, M.
, 2002, “Toward Improved CVTs: Theoretical and Experimental Results
,” ASME International Mechanical Engineering Congress and Exposition
, New Orleans, LA
.7.
Kim
, S.
, 2003, “Control of the Powered Armcobot and Analysis of a Continuously Variable Transmission
,” Ph.D. thesis, Northwestern University, Evanston, IL.Copyright © 2008
by American Society of Mechanical Engineers
You do not currently have access to this content.