motor control sensor feedback circuitsM Author: Jim Lepkowski Microchip Technology Inc. AN894 A list of the sensors that can be used to feedback information to a microcontroller are listed below: Current sensors - Shunt resistor - Current-sensing transformer - Hall effect current sensor Speed/position sensors - Quadrature encoder - Hall efect tachometer Back EMF/Sensorless control method Motor Control Sensor Feedback Circuits INTRODUCTION Sensors are a critical component in a motor control system. They are used to sense the current, position, speed and direction of the rotating motor. Recent advancements in sensor technology have improved the accuracy and reliability of sensors, while reducing the cost. Many sensors are now available that integrate the sensor and signal-conditioning circuitry into a single package. In mo……