资料介绍
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 most motor control systems, several sensors are
used to provide feedback information on the motor.
These sensors are used in the control loop and to
improve the reliability by detecting fault conditions that
may damage the motor. As an example, Figure 1 pro-
vides a block diagram of a DC motor control system to
show the sensor feedback provided for a typical motor
control.M AN894
Motor Control Sensor Feedback Circuits
A list of the sensors that can be used to feedback
Author: Jim Lepkowski
information to a microcontroller are listed below:
Microchip Technology Inc.
Current sensors
- Shunt resistor
INTRODUCTION
- Current-sensing transformer
Sensors are a critical component in a motor control
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