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2. Rotary actuator - Wikipedia

   en.wikipedia.org/wiki/Rotary_actuator

   A rotary actuator is an actuator that produces a rotary motion or torque. The simplest actuator is purely mechanical, where linear motion in one direction gives rise to rotation. The most common actuators are electrically powered; others may be powered pneumatically or hydraulically , or use energy stored in springs .

3. Resolver (electrical) - Wikipedia

   en.wikipedia.org/wiki/Resolver_(electrical)

   The exciter winding is located on the top; it is a coil of a turning (rotary) transformer. This rotary transformer induces current in the rotor without wires or brushes to provide a direct electrical connection. The two other windings are on the bottom, wound on a lamination. They are configured at 90 degrees from each other.

4. Servomotor - Wikipedia

   en.wikipedia.org/wiki/Servomotor

   This is the steering actuator of a large robot vehicle. Industrial servomotors and gearboxes, with standardised flange mountings for interchangeability. A servomotor (or servo motor or simply servo) [1] is a rotary or linear actuator that allows for precise control of angular or linear position, velocity, and acceleration in a mechanical system.

5. Servo (radio control) - Wikipedia

   en.wikipedia.org/wiki/Servo_(radio_control)

   Centrifugal fly-ball actuator. The fly-ball actuator was introduced to R/C modelling in 1951 by Brayton Paul, [5] and consisted of an electric motor and a centrifugal governor connected to a free-running axis that could, with the motor running, pull a rudder control rod by varying degrees. Used with a keyed radio system, this allowed some ...

6. Actuator - Wikipedia

   en.wikipedia.org/wiki/Actuator

   Electric rotary actuators use a rotary motor to turn the target part over a certain angle. [11] Rotary actuators can have up to a rotation of 360 degrees. This allows it to differ from a linear motor as the linear is bound to a set distance compared to the rotary motor.

7. Stewart platform - Wikipedia

   en.wikipedia.org/wiki/Stewart_platform

   A Stewart platform is a type of parallel manipulator that has six prismatic actuators, commonly hydraulic jacks or electric linear actuators, attached in pairs to three positions on the platform's baseplate, crossing over to three mounting points on a top plate.