Encoders

A range of Micro-Drives encoders is available for applications that require accurate control of motor velocity, direction of rotation and positioning.  The performance of a drive or servo system depends on the precision and reliability of the servo feedback available.

Operating principle of capacitive encoders

Capacitive encoders use an AC field transmitter, patterned rotor, field receiver and a proprietary ASIC to convert modulated signals into output pulses that can be read by the same circuits used to receive optical or magnetic encoder output.

Micro-Drives' capacitive encoders are designed to used in conjunction with Micro-Drives' DC motors, Brushless Motors, and Precision Gearheads for a complete miniature drive system.

Operating principle of magnetic encoders

Magnetic encoders are based on a multi-pole, permanent magnet disc mounted directly on the motor shaft.   Magnetic  flux variations are detected by magnetic sensors and converted into output signals with a  90 degree phase shift.  This principle allows the configuration of micro encoders characterized by small dimensions and high resolutions.

Micro-Drives' magnetic encoders are designed to used in conjunction with Micro-Drives' DC motors, Brushless Motors, and Precision Gearheads for a complete miniature drive system.

Operating principles of optical encoders

Optical encoders use a continuous infrared light source transmitting through a low inertia multi-section rotor disk which is fitted directly on the motor rear end shaft.  The unit thus generates two output signals with a 90 degree phase shift.

Micro-Drives' optical encoders are designed to used in conjunction with Micro-Drives' DC motors, Brushless Motors, and Precision Gearheads for a complete miniature drive system.