More torque, more integration

摘要

The direct-drive, permanent-magnet (PM) torque motor is characterised by a large diameter-to-length ratio (giving it the 'flat' look) and large number of magnetic poles to optimise torque production. These relatively low speed motors, usually operating under 1,000 rpm, combine several design features to deliver their intended function. Direct drive - meaning no power transmission elements between motor and driven load - brings advantages of high dynamic motion with essentially no backlash and excellent static / dynamic load stiffness that allows precise motion control. Large numbers of magnet pole pairs in the rotor aid high torque generation.