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Field Oriented Control Algorithm for Sensorless Control of Permanent Magnet Synchronous Motors

Mon, 08/06/2007 - 11:25am

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Microchip Technology is providing free source code for the sensorless field oriented control (FOC) of permanent magnet synchronous motors (PMSMs), which can operate on any of the company’s motor control dsPIC digital signal controllers (DSCs) -- including the DSCPIC33FJ12MC family of DSCs. The algorithm is free, and prices for the DSCPIC33FJ12MC family start at $1.99 each in 10,000-unit quantities. Using this FOC platform, with downloadable code available at www.microchip.com/motor, motor-driven applications such as appliances can reduce energy consumption by replacing expensive optical or Hall-effect encoders with inexpensive shunt resistors, according to the company.

Microchip Technology
888-628-6247, www.microchip.com 

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