Servo Drives are beyond matching voltage and current output for meeting motor’s requirements. A complete servo system needs specialized functions too.
Two of the most common types of motors that servo drives are paired with are asynchronous AC and brushless DC. Most recently, several manufacturers are offering brushless DC motors with integrated motion control and speed control.
Invariably, the servo drive type prompts the commutation based on on motor type and application sensitivity. While brushless DC motors operate with trapezoidal or sinusoidal commutation, asynchronous AC picks up both.
If torque ripple is an issue, then surely sinusoidal commutation eliminates it, though it would need a high-res feedback device for precise control. As we already know, a complete servo system requires a feedback system for detection & correction of errors, encoders & resolvers have been beneficial. Meanwhile, a servo drive should have no compatibility issues for signal processing and communicating that to the controller.
In the attempt to select the right servo drive, it’s basic to know about continuous current, maximum and peak voltage for producing the right output like velocity, position, and torque in the motor. These are co-dependent factors and are likely to go under observation for performance analysis.
Communication protocol, integrated safety, and AC or DC servo drive mounting type configuration also play a pivotal role in selecting servo drives for the motor. A few reliable motion control product manufacturing companies respond to customized orders for clients, especially concerning requirements at various facilities.
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