Rotationskompensator

Rotationskompensator is a device or algorithm used in mechanical and control systems to compensate for undesired rotational motion. It aims to maintain orientation, pointing accuracy, or synchronization of rotating parts by counteracting angular disturbances such as vibrations, gyroscopic drift, torsional flexure, or platform rotation.

In mechanical implementations, a rotationskompensator may comprise a gimbal-mounted counter-rotating assembly, a rotational actuator, and a feedback loop. Electronic implementations use control algorithms that generate compensating angular commands using sensor data from gyroscopes and encoders; common methods include feedforward, PID-based controllers, lead-lag networks, or state estimators like Kalman filters. The compensation is applied to maintain a stable reference frame or to synchronize multiple axes, reducing the impact of rotational disturbances on the system's output.

Applications of rotationskompensatoren span stabilization of camera gimbals, antenna systems, satellite attitude control, optical telescopes, robotic manipulators, CNC machine tools, and vehicle navigation. Key design considerations include bandwidth and phase margin, latency, sensor noise, cross-axis coupling, and temperature drift. Performance is typically evaluated by residual angular error, settling time, and disturbance rejection, guiding the selection of mechanical design and control strategy for a given use case.