Power_Limit_Function_CM_MDD

Module –

High-Level Description

This module determines an appropriate limit for the system motor torque command based on reasonable output power and system temperature. It also determines to what degree the system command is being limited.

Figures

Component Diagram

Variable Data Dictionary

For details on module input / output variable, refer to the Data Dictionary for the application. Input / output variable names are listed here for reference.

Module Internal Variables

This section identifies the name, range and resolutions for module specific data created by this module. If there are no range restrictions on the variable, the term “FULL” is placed into the table for legal range.

User defined typedef definition/declaration

This section documents any user types uniquely used for the module.

Constant Data Dictionary

Calibration Constants

This section lists the calibrations used by the module. For details on calibration constants, refer to the Data Dictionary for the application.

Program(fixed) Constants

Embedded Constants

All embedded constants whose values are provided in Eng units will be evaluated to the equivalent counts by using the FPM_InitFixedPoint_m() macro within the #define statement.

Local

Global

This section lists the global constants used by the module. For details on global constants, refer to the Data Dictionary for the application.

Module specific Lookup Tables Constants

Functions/Macros used by the Sub-Modules

Library Functions / Macros

The library and functions / Macros that are called by the various sub modules are identified below,

1. LPF_KUpdate_f32_m

2. LPF_OpUpdate_f32_m

3. Abs_f32_m

4. Abs_s16_m

5. FPM_FixedToFloat_m

6. FPM_FloatToFixed_m

7. IntplVarXY_u16_u16Xu16Y_Cnt

9. TableSize_m

10. Limit_m

11. Min_m

12. Max_m

13. IntplVarXY_u16_s16Xu16Y_Cnt

14. Sign_f32_m

Data Hiding Functions

1. None

Global Functions/Macros Defined by this Module

None

Local Functions/Macros Used by this MDD only

None

Software Module Implementation

Runtime Environment (RTE) Initial Values

This section lists the initial values of data written by this module but controlled by the RTE. After RTE initialization, the data in this table will contain these values.

Initialization Functions

Init: _Init1

Design Rationale

None

Module Outputs

None

Module Internal

Periodic Functions

Per: _Per1

Design Rationale

None

Program Flow Start

Rte_Call_PwrLmtFuncCr_Per1_CP0_CheckpointReached

Store Module Inputs to Local copies

EstKe_VpRadpS_T_f32 = Rte_IRead_PwrLmtFuncCr_Per1_EstKe_VpRadpS_f32()

MotorVelMRF_MtrRadpS_T_f32 = Rte_IRead_PwrLmtFuncCr_Per1_MotorVelMRF_MtrRadpS_f32()Vecu_Volt_T_f32 = Rte_IRead_PwrLmtFuncCr_Per1_Vecu_Volt_f32()

CntDisMtrCmdMRF_MtrNm_T_f32 = Rte_IRead_PwrLmtFuncCr_Per1_CntDisMtrTrqCmdMRF_MtrNm_f32()

AltFaultActive_Cnt_T_lgc = Rte_IRead_PwrLmtFuncCr_Per1_AltFaultActive_Cnt_lgc()

Filter Motor Velocity

MtrVelFilt_MtrRadpS_T_f32 = LPF_OpUpdate_f32_m(MotorVelMRF_MtrRadpS_T_f32, & PwrLmtFuncCr_ MtrVelKSV_M_str)

Nexteer Power Limit

Output Velocity

Store Local copy of outputs into Module Outputs

PwrLmtFuncCr_OPVelOffset_MtrRadpS_D_f32 = OPVelOffset_MtrRadpS_T_f32

PwrLmtFuncCr_TrqEnvLmt_MtrRadpS_D_f32 = TrqEnvLmt_MtrRadpS_T_f32

PwrLmtFuncCr_TLimitMaxCurr_MtrNm_D_f32 = TLimitMaxCurr_MtrNm_T_f32

PwrLmtFuncCr_MinStdOpLmt_MtrNm_D_f32 = PwrLmtFuncCr_ MinStdOpLmt_MtrNm_M_f32

PwrLmtFuncCr_ SpdAdj_MtrRadpS_M_f32 = SpdAdj_MtrRadpS_T_f32

PwrLmtFuncCr_ TrqEnvLmt1_MtrNm_M_f32 =TrqEnvLmt1_MtrNm_T_f32;

PwrLmtFuncCr_TrqLmt1_MtrNm_D_f32 = TrqLmt1_MtrNm_T_f32;

PwrLmtFuncCr_TrqEnvLmt4_MtrNm_D_f32 = TrqEnvLmt4_MtrNm_T_f32;

PwrLmtFuncCr_TrqLmt4_MtrNm_D_f32 = TrqLmt4_MtrNm_T_f32;

PwrLmtFuncCr_MtrVelFilt_MtrRadpS_D_f32 = MtrVelFilt_MtrRadpS_T_f32;

PwrLmtFuncCr_ VecuSlewAdj_Volt_M_f32 = PwrLmtVecu1SlewAdj_Volt_T_f32

Rte_IWrite_PwrLmtFuncCr_Per1_MRFMtrTrqCmd_MtrNm_f32 (MRFMtrTrq_MtrNm_T_f32)

Program Flow End

Rte_Call_PwrLmtFuncCr_Per1_CP1_CheckpointReached

Per: _Per2

Design Rationale

None

Program Flow Start

Rte_Call_PwrLmtFuncCr_Per2_CP0_CheckpointReached

Store Module Inputs to Local copies

CntDisMtrCmdMRF_MtrNm_T_f32 = Rte_IRead_PwrLmtFuncCr_Per2_CntDisMtrTrqCmdMRF_MtrNm_f32();

Vecu_Volt_T_f32 = Rte_IRead_PwrLmtFuncCr_Per2_Vecu_Volt_f32();

MinStdOpLmt_MtrNm_T_f32 = PwrLmtFuncCr_ MinStdOpLmt_MtrNm_M_f32

TrqEnvLmt1_MtrNm_T_f32 = PwrLmtFuncCr_ TrqEnvLmt1_MtrNm_M_f32

MtrEnvSpd_MtrRadpS_T_f32 = PwrLmtFuncCr_ MtrEnvSpd_MtrRadpS_M_f32

Power Limit Status

Assist Limit Condition

Store Local copy of outputs into Module Outputs

PwrLmtFuncCr_LimitDifference_MtrNm_D_f32 = LimitDifference_MtrNm_T_f32

PwrLmtFuncCr_TrqLmt_Uls_D_f32 = TrqLmt_Uls_T_f32

Rte_IWrite_PwrLmtFuncCr_Per2_FltTrqLmt_Uls_f32(FltTrqLmt_Uls_T_f32)

Rte_IWrite_PwrLmtFuncCr_Per2_ThresholdExceeded_Cnt_lgc(PwrLmtFuncCr_ ThresholdExceeded_Cnt_M_lgc)

Program Flow End

Rte_Call_PwrLmtFuncCr_Per2_CP1_CheckpointReached

Fault Recovery Functions

None

Shutdown Functions

None

Interrupt Functions

None

Serial Communication Functions

None

Execution Requirements

Execution Rates for sub-modules called by the Scheduler

This table serves as reference for the Scheduler design

Execution Requirements for Serial Communication Functions

Memory Map Definition Requirements

Sub Modules (Functions)

This table identifies the software segments for functions identified in this module.

Local Functions

This table identifies the software segments for local functions identified in this module.

Known Issues / Limitations With Design

1. INLINE functions defined in GlobalMacro.h are not unit tested.

Revision Control Log