Configuring linear servo motor
Linear servo motor is an actuator producing linear force or motion and is constructed from a linear motor and a linear feedback device such as linear encoder.
Linear servo motor is electrically equivalent to a rotary motor, so drive sees no difference between the two. However, as drive parameters are entered for rotary motor only, they need some calculations to suit for linear motor.
Configuration
Preparations
Needed parameters of linear motor:
- Magnetic pole pitch (or pole pair pitch)
- Forcer winding specifications:
- Maximum currents: continuous and peak
- Inductance and resistance
- Thermal time constant (optional but recommended)
Needed linear feedback device parameters:
- Resolution (lines or pulses per millimeter)
Conversion of parameters
In this step we convert the values so that motor can be driven from a servo drive. The drive is made to believe that the linear motor is rotary motor, so we need to figure out the equivalent rotary motor parameters. This example works with Granity software.
In no event the Product Information or parts hereof shall be regarded as guarantee of conditions or characteristics. The Product Information or any part thereof may also not be regarded as a warranty of any kind. No liability of any kind shall be assumed by Author with respect to Product Information or any use made by you thereof, nor shall Author indemnify you against or be liable for any third party claims with respect to such information or any use thereof.
As content of this Wiki may be edited by user community, Granite Devices Oy or it's affiliates do not take any responsibility of the contents of this Wiki. Use information at your own risk. However, Granite Devices staff attempts to review all changes made to this Wiki and keep information trustworthy.
Without written consent, Granite Devices' Products or Intellectual Property shall not be used in situations or installations where living beings, material property, or immaterial property could be harmed by the operation, features or failures of Product. Products may only be used in a way where hazards like moving parts, electric shock, laser radiation, or fire can't be realized even if the content of this Wiki would suggest otherwise.
