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AN2388 bảng dữ liệu(PDF) 3 Page - STMicroelectronics |
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AN2388 bảng dữ liệu(HTML) 3 Page - STMicroelectronics |
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3 / 54 page ![]() AN2388 Contents 3/54 4.4.2 Numerical considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 4.4.3 ST10-DSP features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 4.5 Analog value scaling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 4.5.1 Current sensing and scaling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 4.5.2 Rotor mechanical position sensing . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 4.5.3 The PI regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43 4.6 Clark and Park transformation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44 4.6.1 (a,b)->( α,β) projection (Clark transformation) . . . . . . . . . . . . . . . . . . . . 44 4.6.2 The ( α,β)-> (d,q) projection (Park transformation) . . . . . . . . . . . . . . . . . 45 4.6.3 The Current model implementation (rotor flux estimator) . . . . . . . . . . . 45 4.6.4 Generation of sine and cosine values . . . . . . . . . . . . . . . . . . . . . . . . . . 46 4.6.5 The space vector modulation module . . . . . . . . . . . . . . . . . . . . . . . . . . 47 5 References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52 6 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53 |
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