Rotary control
A rotary control (colloquially also called a rotary knob ) generally refers to a small control element that can be adjusted by turning . Electric knobs are usually potentiometers (see main article: rotary switches ). Mechanical rotary controls can, for example, be small control elements for valves (see rotary valve ) or positioning elements .
Contrary to the name, a rotary control is not actually a regulator , but a purely controlling actuator . However, the technically correct term turntable is not used in the literature.
Rotary controls as input devices for a processor-controlled process are pulse generators, which provide directional information by distributing the pulses over two lines. The processor takes over the information and operates the controlled system. These rotary controls are maintenance-free and insensitive to vibrations, so that they are preferably also used as volume controls on car radios. When the radio is switched off, any rotation has no effect, so that when the radio is switched on either the old setting or a standard value takes effect. The cog on the computer mouse and many rotary controls in the cockpit also work according to this principle.
literature
- Manuel Kühner: Haptic distinguishability of mechanical parameters in rotary control elements , dissertation, Technical University of Munich, 2014 ( library link project page )
