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The purpose of an amplifier in a motion control system is to provide a controlled amount of current or voltage to a motor based on a command signal from the motion controller. This is done by a current (transconductance) or voltage amplifier. Each of these two type of amplifiers has benefits and drawbacks which must be considered in order to choose the correct structure for a given motion control application. This paper will examine the similarities and differences between the two main types of switching amplifiers by addressing three key areas: performance, safety, and efficiency.
Figure 1: Typical H-Bridge Circuit of Switching Amplifier
The Closed-Loop Microstepping firmware is an excellent solution for applications that need end point accuracy when using stepper motors. However, this added complexity creates a challenge when tuning.
Our next two-day product school is Thursday August 3, 2017 through Friday August 4, 2017. The training will be at our headquarters in Rocklin, CA (near Sacramento).