Tune

How it is used

Used in commissioning and optimization. You tune a loop, a drive or an axis, and the result is well tuned or poorly tuned. Many drives have auto-tuning; engineers then fine-tune by hand while watching a trend or a scope trace.

Example sentences

1. We need to tune the temperature loop again; it overshoots by 8 degrees.

2. After auto-tuning, I fine-tuned the servo gains to stop the vibration at the end of the move.

Common collocations

• tune the loop
• auto-tuning
• fine-tune
• well tuned
• tuning parameters

Related terms

• PID controlA common feedback control method that calculates its output from three terms: proportional (the present error), integral (the error built up over time) and derivative (how fast the error is changing).
• overshootThe amount by which a controlled value goes past its setpoint before settling, for example a temperature rising to 85 °C when the target is 80 °C. It is often given as a percentage.
• servo motorAn electric motor with a built-in position sensor, usually an encoder, so that a drive can control its position, speed and torque very precisely. Robot joints are normally moved by servo motors.
• commissioningThe stage of a project when a new machine or system is installed, tested, adjusted and started up until it works as specified and can be handed over to production.
• closed-loop controlControl in which the actual output is measured and fed back, so the controller keeps correcting its command until the output matches the target.

This word in other fields

The same English word can have a different meaning in another field:

• tune · Music

More terms: Control Systems

• controller
• feedback
• setpoint
• open-loop control
• process variable