Motor Drive Technology Comparison
Compare and get a better understanding of features with the Motor Drive Technology Comparison. For any further questions or inquiries contact us!
|Velocity||The velocity depends on the
switching frequency. Typically, 20 to 30 revolutions/second
|Proportional to the voltage, higher as with 2SM. Higher velocities with ActiveDrive. Typically, 50 revolutions/second (limited by drive screw and noise)||Proportional to the voltage, higher as with DC. Typically, 60 revolutions/second (limited by drive screw)||High velocity stability|
|Smooth running||Possibly vibrations at high velocity, smooth running through mechanical damper and sinusoidal commutation||Quieter than 2SM||Sinusoidal commutation for very smooth running (typical in ACS controllers, PI C- 891 controller, and SMC Hydra)|
|Resolution / Precision||Position information without encoder, high position stability, very high resolution in microstepping mode||Requires encoder for positioning information, resolution depends on the encoder, position jitter caused by the control loop|
|Torque||Low torque in microstepping mode, high torque at low speeds||Proportional to the current||High, determined by the number of pole pairs|
|Self-locking||High holding force, self-locking only at a full-step (load- dependent)||Low, can only be increased by drive gear and precision drive screw||N/A|
|Lifetime||Higher than DC, comparable to BLDC/SSVM||Limited by brushes, typically 1,000-5,000 hours||Limited by bearings, typically several 10,000 hours, comparable with magnetic linear motors|
|Miscellaneous||Less expensive than DC, long lifetime, reliable, position error at step loss||Less expensive than BLDC/SSVM, lower control effort required, high dynamics and smooth running, low heat build-up||Low maintenance, efficient and low noise, light, high reliability and dynamics, low heat build-up and few vibrations, suitable for industrial applications||Direct drive, high drive rigidity, high repeatability, high torques, play-free, hollow shaft, flat, suitable for industrial applications|
* This Motor Drive Technology Comparison page is a rendition from our Supplier, Physik Insturmente GmbH, White Paper Rotating Electric Motors for Precision Positioning.