單片機(jī)外文翻譯永磁無(wú)刷直流電機(jī)-單片機(jī)-文庫(kù)吧
2024-12-30 07:58 本頁(yè)面
【正文】 erface and A / D interface circuit modules. ADSP21992 for the 160 M highperformance mixedsignal DSP chips, the chip in addition to a powerful dataprocessing capabilities, for motor control, but also to provide 6channel PWM output, 8channel 14bit A / D conversion channels, 16 generalpurpose I / 0 I, as well as three 32bit dedicated hardware resources, such as counting unit. 2. Power circuit Drive circuit from the diode rectifier bridge, filter capacitor and the IGBT inverter constituted。 drive circuit using IR39。s I82130 dedicated MOs power device gate drive dedicated chip, the chip can not only achieve the optimal IGBT driver, and has a perfect protection, can significantly improve system integration and reliability。 isolated part of the use of highspeed optocoupler HCPL4504, isolation from the role of potential. 3. Rotor position and current detection circuit Due to current highspeed motor, backEMF waveform distortion is more serious, it is not suitable for position sensorless control for easy installation, the use of small size, convenient installation and electromagic Hall sensor mounted on the end of stator windings, the output signal by the partial pressure , filter the buffer. PI current regulator current aim is to achieve fast and accurate tracking of a given value, the incremental selection of PI regulator。 speed PI regulator related to the system dynamic and static performance, it is separated from the use of integral PI regulator. Encountered in software design PI regulator design that is the proportion coefficient and integral coefficient kP selection of ki. System uses a factor of AD and Industrial standard procedures set forth in PI coefficient (Kp = 25, Wpi = kp / ki = 50H
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