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USB-2-RTMI датащи(PDF) 2 Page - TRINAMIC Motion Control GmbH & Co. KG. |
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USB-2-RTMI датащи(HTML) 2 Page - TRINAMIC Motion Control GmbH & Co. KG. |
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2 / 157 page ![]() TMC4671 Datasheet • IC Version V1.00 | Document Revision V1.04 • 2018-Dec-11 2 / 157 Contents 1 Order Codes 5 2 Functional Summary 6 3 FOC Basics 8 3.1 Why FOC? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 3.2 What is FOC? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 3.3 Why FOC as pure Hardware Solution? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 3.4 How does FOC work? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 3.5 What is Required for FOC? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 3.5.1 Coordinate Transformations - Clarke, Park, iClarke, iPark . . . . . . . . . . . . . . . . . 10 3.5.2 Measurement of Stator Coil Currents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 3.5.3 Stator Coil Currents I_U, I_V, I_W and Association to Terminal Voltages U_U, U_V, U_W 10 3.5.4 Measurement of Rotor Angle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 3.5.5 Measured Rotor Angle vs. Magnetic Axis of Rotor vs. Magnetic Axis of Stator . . . . . 11 3.5.6 Knowledge of Relevant Motor Parameters and Position Sensor (Encoder) Parameters 12 3.5.7 Proportional Integral (PI) Controllers for Closed Loop Current Control . . . . . . . . . . 12 3.5.8 Pulse Width Modulation (PWM) and Space Vector Pulse Width Modulation (SVPWM) . 12 3.5.9 Orientations, Models of Motors, and Coordinate Transformations . . . . . . . . . . . . 13 4 Functional Description 14 4.1 Functional Blocks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 4.2 Communication Interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 4.2.1 SPI Slave User Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 4.2.2 TRINAMIC Real-Time Monitoring Interface (SPI Master) . . . . . . . . . . . . . . . . . . . 17 4.2.3 UART Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 4.2.4 Step/Direction Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 4.2.5 Single Pin Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 4.3 Numerical Representation, Electrical Angle, Mechanical Angle, and Pole Pairs . . . . . . . . . 20 4.3.1 Numerical Representation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 4.3.2 N_POLE_PAIRS, PHI_E, PHI_M . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 4.3.3 Numerical Representation of Angles PHI . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 4.4 ADC Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 4.4.1 ADC Group A and ADC Group B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 4.4.2 Internal Delta Sigma ADCs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 4.4.3 External Delta Sigma ADCs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 4.5 Delta Sigma Con guration and Timing Con guration . . . . . . . . . . . . . . . . . . . . . . . . 24 4.5.1 Internal Delta Sigma Modulators - Mapping of V_RAW to ADC_RAW . . . . . . . . . . . 27 4.5.2 External Delta Sigma Modulator Interface . . . . . . . . . . . . . . . . . . . . . . . . . . 29 4.5.3 ADC Con guration - MDAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 4.6 Analog Signal Conditioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 4.6.1 FOC3 - Stator Coil Currents I_U, I_V, I_W and Association to Terminal Voltages U_U, U_V, U_W . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 4.6.2 Stator Coil Currents I_X, I_Y and Association to Terminal Voltages U_X, U_Y . . . . . . . 33 4.6.3 ADC Selector & ADC Scaler w/ Offset Correction . . . . . . . . . . . . . . . . . . . . . . . 33 4.7 Encoder Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 4.7.1 Open-Loop Encoder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 4.7.2 Incremental ABN Encoder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 4.7.3 Secondary Incremental ABN Encoder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 4.7.4 Digital Hall Sensor Interface with optional Interim Position Interpolation . . . . . . . . 37 4.7.5 Digital Hall Sensor - Interim Position Interpolation . . . . . . . . . . . . . . . . . . . . . 38 4.7.6 Digital Hall Sensors - Masking and Filtering . . . . . . . . . . . . . . . . . . . . . . . . . . 38 ©2018 TRINAMIC Motion Control GmbH & Co. KG, Hamburg, Germany Terms of delivery and rights to technical change reserved. Download newest version at www.trinamic.com |
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