Servo systems, however, present a distinct challenge. Unlike fixed-speed induction motors that run at a steady rate, and can be easily classified and assigned a rating, servo motors operate dynamically. They accelerate, decelerate, reverse, and hold position thousands of times per hour. Their operating conditions vary constantly, making it difficult to assign a single efficiency rating.
Understanding where losses occur, and how to minimise them, is key to improving performance across the system.
Read the full article in DPA's December 2025 issue