Most of the motion solutions we work on typically require either point-to-point positioning or constant velocity scanning motion. In these applications, customers are usually concerned with accuracy, repeatability, or velocity regulation.
One special type of motion that is occasionally required is sinusoidal scanning motion. In these applications, the motion stage is expected to oscillate back and forth at a certain displacement and frequency. In these applications, customers are concerned with following error – which is the system’s ability to follow the commanded motion trajectory.
Sine scanning is common in the optics world, where actuators, like galvanometers, oscillate mirrors and lenses at several kHz. However, the motion created by such systems is rotational. For customers who want to create true linear motion, a different technology must be used.