5. Control without speed sensor
With an "incremental" transducer, speed is measured by counting pulses over a time interval, or by measuring the time between two pulses (at very low speeds).
In many applications, there is a strong desire to dispense with the need for a mechanical speed sensor, in order to guarantee reliable operation. Here are a few arguments in favor of sensorless control.
This is because the speed sensor is integral with the machine shaft, and held stationary in relation to the stator. It is therefore subject to all mechanical vibrations and shaft movements.
5.1 Assembly problems
The speed sensor is very sensitive to mounting problems. As the shaft of an induction motor is occupied at one end by the process to be driven and...
Exclusive to subscribers. 97% yet to be discovered!
Already subscribed? Log in!
Control without speed sensor
Conclusion
Article included in this offer
"Conversion of electrical energy"
(
278 articles
)
Updated and enriched with articles validated by our scientific committees
A set of exclusive tools to complement the resources
