Servo systems typically use a combination of three types of control loops: current, velocity, and position. The velocity control loop serves two purposes—it enables the system to respond to changing ...

First, the design of deep-space open-loop velocity measurement on the basis of China’s DSN (CDSN) is presented. The process of deep-space open-loop velocity measurement contains six steps. First, ...

The word servo has become synonymous with the words servomotor, servomechanism, and servosystem to indicate a closed-loop controlled system. A servo is most simply defined as any driven mechanism ...

This month’s Tune-Up column, which concludes a three-part series on position loops, addresses feed-forward gains. Motion control systems often use feed forward to speed up the response to rapidly ...

The importance of motor trajectory profiles and how they’re used in brushless DC (BLDC) motor control to minimize vibration and smooth out other performance issues. Why the PID loop is the most widely ...