Transcription of Motor Control Sensor Feedback Circuits
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Motor Control Sensor Feedback Circuits
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 - Hall effect current Sensor system. They are used to sense the current, position, Speed/position sensors speed and direction of the rotating Motor . Recent - Quadrature encoder advancements in Sensor technology have improved the accuracy and reliability of sensors, while reducing - Hall efect tachometer the cost. Many sensors are now available that integrate Back EMF/Sensorless Control method the Sensor and signal-conditioning circuitry into a single package.
• Increasing R SENSE increases the V SENSE voltage, which makes the voltage offset (VOS) and input bias current offset (IOS) amplifier errors less significant. • A large R SENSE value causes a voltage loss and a reduction in the power efficiency due to the I 2 x R loss of the resistor. Regr a•A l SENSE value will cause a voltage offset to
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