ABSTRACT

Generally, controls are the interface elements in a manmachine system through which energy or information is transferred from the user to the technical system. The most common way to transmit movement by mechanical controls is rotation. There are numerous different types of rotatory controls which are normally standardized. In order to operate with rotatory controls a torque is required. According to their shape different types of rotatory controls can be differentiated: (hand)wheels, rotary disks, rotary switches, knobs and cranks. Rotatory controls can be equiped with pointers or scales.