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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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UM0324 데이터시트(PDF) 59 Page - STMicroelectronics |
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UM0324 데이터시트(HTML) 59 Page - STMicroelectronics |
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59 / 105 page  UM0324 Library functions 59/105 Figure 37. Rotor flux angle calculation (tachogenerator) IFOC_CalcFluxTorqueRef Synopsis void IFOC_CalcFluxTorqueRef (void) Description This function provides current components iqs* and ids* to be used as reference values (by the IFOC_Model function) in closed-loop speed mode (see “Torque & Flux opt” block in Figure 38). Speed setpoint and actual rotor speed ωr are compared in a PID control loop, whose output is iqs**. This component, together with the previous flux reference and the rotor speed ωr, is used to work out the stator frequency that has to be generated. With this information, two lookup-tables (described in MC_ACmotor_prm, Section 2.2.5 , defined by taking into account the field weakening strategy explained in Section 4.4.4) are run through, in order to get the optimal flux reference (ids*) and the saturation value of the torque current component (iqs max) that allow to reach the desired speed (under the obvious limitations of rated torque and rated power). Input None. Returns None. Functions called PID_Speed_Regulator; mul_q15_q15_q31, div_q31_q15_q15. |
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