# Blog: Hybrid Motion Technology

## hMTechnology and Position Make-up II

In our last posting we raised some questions about how the “position make up” made up for the steps that were removed.

## hMTechnology and Position Make-up

Our last few postings talked about the “torque mode” operational theory that we added to our “Hybrid” drive. Prior to that we added “variable current mode” and “position makeup”

## Four Quadrant Drives: Torque Mode with Hybrid Drives Part II

In our last posting we discussed how we made our “Hybrid Drive” act like a torque motor. One issue that you do have be aware of is the fact that at some point in the stepper’s speed-torque curve the torque is going to begin to fall off as a function of speed just as it …

## Four Quadrant Drives: Torque Mode with Hybrid Drives

In our last posting we discussed an application where we used our “Hybrid” drive in the “Torque Mode” to apply tension to a web.And we asked how does the “Hybrid” drive know what speed to operate at when the web velocity changes? It’s looking at its own rotor encoder information. If the encoder begins to …

## Four Quadrant Drives: Torque Mode continued

In our last posting we introduced torque motors and posed the question about how we might be able to modify our new “Hybrid” drive to act like a torque motor. Have you thought of a way to do it?

## Four Quadrant Drives Part the Third: Torque Mode

Our last few posting introduced a number of improvements to our original stepper drive so we renamed it a “Hybrid” drive. This “Hybrid” drive operates in all four quadrants without missing any steps and without stalling. Think about that for a minute. A stepper system that doesn’t stall, when’s the last time you heard that?

## Four Quadrant Drives Part the Second: Hybrid Drives

Our last posting introduced the idea of four quadrant drives. Four quadrant drives allow the motor to generate torque in the same direction or in the opposite direction that the shaft is spinning. If the motor is operating in the first or third quadrant the rotor will lag the stator’s magnetic field. If the motor …