ON THE DYNAMIC RESPONSE CAPABILITIES OF ELECTRIC, AIR, AND HYDRAULIC MOTOR POWERED SERVODRIVES
1989 Volume 1989 Issue 1 Pages 191-196
Details
1989 Volume 1989 Issue 1 Pages 191-196
The paper is concerned with examining the performance potentials of electric, hydraulic and air motor drive technologies when applied to control the position of the same load. The work is referenced loosely to a 20 kg payload situation. It is recognized that the amplification between servoactuator output displacement and payload displacement for a particular drive axis can be anything from zero to perhaps 20 to 1. For this reason, the load to be directdriven by the proposed servodrives was taken as 0 to 200 kg; i.e. a 10: 1 mechanical amplification of motion was assumed. The work was pursued via digital simulation of dynamic models which were derived using power flow (bond graphs) techniques. The simulations were authenticated via measurements of the responses of hardware systems assembled for the purpose. The servodrives are described briefly and their responses to step input position change commands are presented and compared.
