HwAgSnsrls_MDD

Module Design Document

For

HwAgSnsrls

VERSION: 4.0

DATE: 17-Nov-2016

Prepared For:

Software Engineering

Nexteer Automotive,

Saginaw, MI, USA

Prepared By:

TATA ELXSI

CHENNAI, INDIA

Change History

Table of Contents

1 Introduction 5

1.1 Purpose 5

2 HwAgSnsrls & High-Level Description 6

3 Design details of software module 7

3.1 Graphical representation of HwAgSnsrls 7

3.2 Data Flow Diagram 8

3.2.1 Component level DFD 8

3.2.2 Function level DFD 8

4 Constant Data Dictionary 9

4.1 Program (fixed) Constants 9

4.1.1 Embedded Constants 9

5 Software Component Implementation 10

5.1 Sub-Module Functions 10

5.1.1 Init: HwAgSnsrlsInit1 10

5.1.1.1 Design Rationale 10

5.1.1.2 Module Outputs 10

5.1.2 Per: HwAgSnsrlsPer1 10

5.1.2.1 Design Rationale 10

5.1.2.2 Store Module Inputs to Local copies 10

5.1.2.3 (Processing of function)……… 10

5.1.2.4 Store Local copy of outputs into Module Outputs 10

5.2 Server Runnables 10

5.2.1 FSnsrlsHwCentr 10

5.2.1.1 Design Rationale 10

5.2.1.2 (Processing of function)……… 10

5.2.2 RstSnsrlsHwCentr 11

5.2.2.1 Design Rationale 11

5.2.2.2 (Processing of function)……… 11

5.3 Interrupt Functions 11

5.4 Module Internal (Local) Functions 11

5.4.1 Local Function #1 11

5.4.1.1 Design Rationale 11

5.4.1.2 Processing 11

5.4.2 Local Function #2 12

5.4.2.1 Design Rationale 12

5.4.2.2 Processing 12

5.4.3 Local Function #3 12

5.4.3.1 Design Rationale 12

5.4.3.2 Processing 13

5.4.4 Local Function #4 13

5.4.4.1 Design Rationale 13

5.4.4.2 Processing 13

6 Known Limitations with Design 14

7 UNIT TEST CONSIDERATION 15

Appendix A Abbreviations and Acronyms 16

Appendix B Glossary 17

Appendix C References 18

Introduction

Purpose

MDD for Handwheel Angle Sensorless.

HwAgSnsrls & High-Level Description

Please refer FDD.

Design details of software module

Graphical representation of HwAgSnsrls

Data Flow Diagram

Component level DFD

Please refer FDD.

Function level DFD

Please refer FDD.

Constant Data Dictionary

Program (fixed) Constants

Embedded Constants

Local Constants

Software Component Implementation

Sub-Module Functions

Init: HwAgSnsrlsInit1

Design Rationale

None

Module Outputs

None

Per: HwAgSnsrlsPer1

Design Rationale

None

Store Module Inputs to Local copies

None

(Processing of function)………

Please refer FDD

Store Local copy of outputs into Module Outputs

Please refer FDD

Server Runnables

FSnsrlsHwCentr

Design Rationale

None

(Processing of function)………

Please see FSnsrlsHwCentr block in FDD

RstSnsrlsHwCentr

Design Rationale

None

(Processing of function)………

Please see RstSnsrlsHwCentr block in FDD

Interrupt Functions

None

Module Internal (Local) Functions

Local Function #1

Design Rationale

None.

Processing

Refer to the “WhlSpdAutocentr” block of the Simulink model of the design.

Local Function #2

Design Rationale

None.

Processing

Refer to the “VehDynAutoCentr” block of the Simulink model of the design.

Local Function #3

Design Rationale

None.

Processing

Refer to the “PinionTqCalc” and “LpFilOneEna” blocks of the Simulink model of the design.

Local Function #4

Design Rationale

None.

Processing

Please refer to the “Arbitration” and “Smoothing” blocks of the Simulink model of the design.

Known Limitations with Design

None.

UNIT TEST CONSIDERATION

None.

Abbreviations and Acronyms

Glossary

Note: Terms and definitions from the source “Nexteer Automotive” take precedence over all other definitions of the same term. Terms and definitions from the source “Nexteer Automotive” are formulated from multiple sources, including the following:

• ISO 9000

• ISO/IEC 12207

• ISO/IEC 15504

• Automotive SPICE® Process Reference Model (PRM)

• Automotive SPICE® Process Assessment Model (PAM)

• ISO/IEC 15288

• ISO 26262

• IEEE Standards

• SWEBOK

• PMBOK

• Existing Nexteer Automotive documentation

References