Speed controller
A speed controller is a control device that influences the speed of a rotating technical component in such a way that its value remains as constant as possible or changes in a targeted manner.
- The first developed and mechanically acting speed governor was the centrifugal governor used on steam engines . He was also the phone with dial and film cameras with the clockspring used -drive.
- In the case of electric motors , speed controllers equipped with electrical or electronic sensors for speed measurement are used in order to:
- to ensure a constant speed with changing load, for example with lathes , electronically controlled drills or film cameras and film projectors , water pumps ; or
- to change the speed electronically depending on a control signal, for example with remote-controlled models. Clocked controllers are mostly used here, with brushless motors also three-phase controllers (also known as Electronic Speed Control ).
- In Otto engines in automobiles , speed governors are used today in connection with intake manifold injection to keep the idling speed constant.