The new Cat ® VFD-A800/W800 Variable Frequency Drive for longwall systems is designed to work in conjunction with Cat UEL and Cat CST gearboxes to deliver variable speed of the armored face conveyor, ...
Many motion applications require high accuracy during and at the completions of moves. Even with perfectly optimized PID (proportional, integral, derivative) values to control position, the ...
Can we improve performance by adding control elements external to the PID loop? Yes. Here we consider torque control and the related subject of torque feedforward — which can make systems run more ...
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