Design Considerations

Power supply DC Battery supply possible
Driver electronics need Yes External or inside motor
Speed accuracy Low Effected by load torque
Manufacture tol ±10% of no load speed
Speed control Voltage Driver output voltage controlled by PWM
Closed loop - using integrated Hall sensors
Position control High effort Closed loop position control and sensor need
Possible Hall sensors applicable
Overloadablity / load inertia High High start torque or peak load torque
Able to accelerate high load inertia
Lifetime High Only limited by bearings
Depends on lateral force and speed
Speed range [rpm] 1000...25000 For no load speed
Efficiency 60...80% At operating point of max. efficiency
Power vs. size High
Winding thermal protection Need If overload (mechanical blocking) not excluded - Current limitation in Driver circuitry
Load sensing Easy Current rises with load
Stalling permissible No No or only short time (winding overheat)
Electromag.interference EMI Not Critical No brushes; PWM voltage may cause EMI
Braking/Holding torque Low Detent torque
Braking improvable by winding short circuit
Max.output power from JE [W] 80 Approximately, for continuous duty cycle
Linear motors from JE No

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