A robust solution for precise motion feedback
ELECTRICAL & ELECTRONICS INDUCTIVE ENCODERS
PORTESCAP
A robust solution for precise motion feedback
An inductive sensor, also known as an inductive encoder, provides fast and precise feedback of motor speed and position. Compared to optical and magnetic encoders, they can optimize the reliability of feedback for miniature motion applications. However, their specification for motion design requires careful consideration, especially for different operational and environmental conditions.
Sayali Shinde, Design Engineer at Portescap, discusses the technology behind inductive sensors.
In a medical operating theatre, a hand-held surgical device, powered by a miniature BLDC motor, needs precise control to optimize the success of the procedure. Alternatively, a robot handling a tool for precision manufacturing needs accurate control to achieve micronlevel position adjustment.
In both these examples, an encoder is an essential feedback device that measures the speed or position of the shaft of an electric motor. The encoder communicates this information to the controller, which calculates the discrepancy between the setpoint and the actual speed or position. The controller then sends a corresponding signal back to the motor to correct any error. With this process operating continually at high speeds, this creates a closed loop
In a medical operating theatre, a hand-held surgical device, powered by a miniature BLDC motor, needs precise control to optimize the success of the procedure.
44 PECM Issue 78