Hypertherm V9 Series Phoenix Rev.11 - Manual (Page 207)

Phoenix 9.76.0 Installation and Setup Manual 806410 207
Section 9
Motion Control
This section provides an introduction to the following topics on motion control theory:
 Closed loop servo control
 Encoders
 Following error
 Position and servo error
 Edge per inch parameter
 Gain
 Recommended tuning procedures
Closed Loop Servo Control
A servo system is the means of accurately controlling electrical motors to create force. The motor output is connected to
a gear system to translate the rotational force of the motor into linear motion. In addition, this gear system modifies the
strength and speed of the motion.
Closed loop servo control is the continuous process of monitoring position, or velocity commands, or both compared to
actual position and velocity and adjusting the output accordingly. A servo system without feedback devices and automatic
adjustment capabilities is called an open loop servo control.
WARNING
System tuning should be performed by a qualified service technician. Improper tuning
can cause personal injury or damage to the system.