Servo Amplifier Sizing & Tools

First time using Linear Amplifiers? Maybe you are a Mechanical Engineer tasked with selecting the servo amplifier for a precision stage? Are you using another amplifier like a PWM, that’s causing noise or bandwidth problems that you need fixed RIGHT NOW!?!?  Try Varedan’s servo amplifier sizing & tools to help.  Sometimes you’d just like to automate or offload some of the servo analysis work for a new machine.

Varedan Technologies Engineering Team is here to help! 

Getting Started

Varedan wants to make it easy to successfully size and select the right amplifier for your application.  Below are a series of tools, application notes and tutorials aimed at simplifying an inherently complicated process.  If you are not familiar with the process, a great place to start is on our Frequently Asked Questions page.

Step 1: Understanding your motion profile

The first step in sizing and designing a high-performance motion control system is to generate a motion profile for the load that you want to control.  For your assistance with your calculations we have provided you with our, “Smart Motion Cheat Sheet.” The motion profile shows the relationships between time, position, velocity and acceleration of the load.

Step 2: Calculating Peak and Continuous Power

Calculating the peak and continuous power dissipation in a linear amplifier is non-intuitive.  To assist you we have Application Notes, tutorial videos and sizing spreadsheets for the four most popular motor types, (linear brushless, rotary brushless, rotary brush-type, and voice-coil).  The tools in the section below will help you calculate the values needed to size and select an appropriate amplifier.

Understanding Back-EMF and Torque/Force Constants for 3-Phase Brushless Motors

If you are unfamiliar with Back-EMF motor constants, the tutorial at the right will take you through what you need to know in order to work with our sizing tools.  While this example is for a Linear Brushless Motor, it also applies to Rotary Brushless Motors.

Step 3: Fill out and submit application information worksheet

Once you have the required information about your application, simply use our application information worksheet to tell our engineers what you need and we will take the guesswork out of selection the proper amplifier.  If you don’t have everything figured out just tell us what you know and we will be happy to assist you with the rest.