Drehwinkelmesssysteme

Drehwinkelmesssysteme, also known as angle encoders or rotary encoders, are devices that convert angular position into an electrical signal. They are essential components in automation, robotics, and various industrial applications where precise measurement of rotation is required. These systems can be broadly categorized into two main types: absolute and incremental encoders.

Absolute encoders provide a unique digital code for each angular position. This means that even after power loss, the system retains its position information and does not require a homing procedure upon restart. They are typically used in applications where continuous position tracking is critical, such as robotic arms or machine tool axes.

Incremental encoders, on the other hand, generate pulses as the shaft rotates. The absolute position is not stored; instead, a reference point or "home" position must be established. The system counts the pulses from this reference to determine the current angular position. They are often favored for their cost-effectiveness and suitability for applications where continuous absolute position is not as crucial, like motor speed control.

Various sensing technologies are employed in Drehwinkelmesssysteme. Optical encoders use a coded disc and a light source/detector to generate signals. Magnetic encoders utilize magnetic fields and Hall effect sensors or magnetoresistive elements. Inductive encoders rely on changes in inductance caused by rotor movement. The choice of technology depends on factors such as required resolution, accuracy, environmental conditions, and cost.