EBOOK - Analysis of Toyota ETCS-i System Hardware - Toyota Pressroom ( Phân tích phần cứng của hệ thống điều khiển bướm ga thông minh Toyota )

List of Figures viii
List of Tables xv
Acronyms and Abbreviations xvii
Executive Summary xix

1 Introduction 1
1.1 System Operation 2
1.2 Investigation Effort 5
1.3 Vehicle Model Selection 7
1.4 Report Summary 7
2 Approach 14
3 ETCS-i Basics and Operation 26
3.1 Introduction 26
3.2 Predecessor Cable System Design 27
3.3 ETCS-i 30
3.4 Fail-safes and Diagnostic Trouble Codes 31
3.5 Advantages of ETCS-i 33
3.6 Camry ETCS-i technology 34
4 Accelerator Pedal 37
4.1 Introduction 37
4.2 Pedal Circuit and Operation 38
4.2.1 Potentiometer based Pedals 39
4.2.2 Hall Effect sensor based pedals 43
4.2.3 Characterization Tests 47
4.3 Pedal Interaction with ETCS-i system 48
4.4 Accelerator Pedal Fail-safes 51
4.5 Pedal Position Learning and Related Vehicle Operating Modes 53
4.5.1 Narrow Lane 53
4.5.2 Wide Region 55
4.6 Pedal Circuit Failure Modes 56
4.6.1 Sensor Failures 56
4.6.2 Calibration 58
4.6.3 Electrical Noise 58
4.6.4 Resistive Faults and Contaminant Intrusion 60
4.6.5 Power Supply Variations 83
4.7 Multiple Failures 88
4.8 Resistive Faults between VPA1 and VPA2 and Vehicle Behavior on Restart 90
4.8.1 Non-linear Mode of Operation 93
4.9 Multiple Series Resistive Faults Leading to Low Supply Voltage 95
4.9.1 Low Voltage at Both Supply Terminals at Pedal End 96
4.9.2 Low Voltage Due to Power Supply Overload 97
4.10 Summary 97
5 Throttle Body 99
5.1 Introduction 99
5.2 Throttle Circuit and Operation 101
5.2.1 Potentiometer Based Throttles 102
5.2.2 Hall Effect Sensors 105
5.2.3 Characterization Tests 108
5.3 Throttle-Body Related Fail-Safes 109
5.4 Throttle Position Learning 111
5.5 Throttle Circuit Failure Modes 111
5.5.1 Sensor Failure Modes 112
5.5.2 Calibration 113
5.5.3 Electrical Noise 113
5.5.4 Resistive Faults 113
5.5.5 Power Supply Variations 127
5.5.6 Valve Sticking/Stuck Throttle Valve Condition 129
5.6 Multiple Failures 130
5.7 Summary 131
6 ECM Hardware 132
6.1 Introduction 133
6.2 ECM Variations 135
6.2.1 Number of Processors 135
6.3 ECM Construction and Testing 137
6.3.1 Housing Construction 137
6.3.2 ECM Operating and Storage Temperatures 140
6.3.3 ECM Tests 140
6.3.4 ECM Connectors 142
6.4 ECM Design and Theory of Operation 142
6.5 Filters and Protection Components 143
6.5.1 EMI/ESD Protection 143
6.5.2 Summary 145
6.6 Power Supply 145
6.6.1 Configuration 145
6.6.2 Filtering 147
6.6.3 Potential Failure Modes 147
6.6.4 Summary 153
6.7 Processors 153
6.7.1 Main Processor 153
6.7.2 Sub Processor 158
6.7.3 Failure Modes 159
6.7.4 Toyota Tin Whisker Testing 167
6.7.5 ECM Inspections and Testing 168
6.7.6 Summary 170
6.8 Analog to Digital Converter 170
6.8.1 Failure Modes 170
6.8.2 Summary 178
6.9 Throttle Motor Driver IC 178
6.9.1 Principle of H-Bridge Configuration 178
6.9.2 Logic Section 179
6.9.3 Failure Modes 180
6.9.4 Summary 187
6.10 Summary 188
7 ECM Software 190
7.1 Introduction 190
7.2 Approach 190
7.3 Flow Review 193
7.4 Static Analysis 193
7.4.1 Module Selection 194
7.4.2 PolySpace ® Results 194
7.4.3 2002 V6 Camry 194
7.4.4 2007 V6 Camry 196
7.4.5 Summary 199
 7.5 Mirroring 200
7.6 Error Correction Code (ECC) 201
7.7 Resource Locking 201
7.8 Test Data/Validation Report Review 202
7.9 Hardware-in-the-Loop Simulation 202
7.9.1 Input Variables 203
7.9.2 Tests performed 204
7.9.3 Summary 209
7.10 Summary 210
8 Other Hardware and System Level Considerations 212
8.1 Introduction 212
8.2 Electromagnetic Interference (EMI) 212
8.3 Latch-up 215
8.3.1 Causes of Latch-Up 215
8.3.2 Protection against Latch-Up 217
8.3.3 System Design 221
8.4 Software System Guards 223
8.4.1 Summary 230
8.5 Cruise Control System 231
8.5.1 Modes of Control 233
8.5.2 Cruise Control and Unintended Acceleration 236
8.6 System Level Protection Features 236

LINK DOWNLOAD

List of Figures viii
List of Tables xv
Acronyms and Abbreviations xvii
Executive Summary xix

1 Introduction 1
1.1 System Operation 2
1.2 Investigation Effort 5
1.3 Vehicle Model Selection 7
1.4 Report Summary 7
2 Approach 14
3 ETCS-i Basics and Operation 26
3.1 Introduction 26
3.2 Predecessor Cable System Design 27
3.3 ETCS-i 30
3.4 Fail-safes and Diagnostic Trouble Codes 31
3.5 Advantages of ETCS-i 33
3.6 Camry ETCS-i technology 34
4 Accelerator Pedal 37
4.1 Introduction 37
4.2 Pedal Circuit and Operation 38
4.2.1 Potentiometer based Pedals 39
4.2.2 Hall Effect sensor based pedals 43
4.2.3 Characterization Tests 47
4.3 Pedal Interaction with ETCS-i system 48
4.4 Accelerator Pedal Fail-safes 51
4.5 Pedal Position Learning and Related Vehicle Operating Modes 53
4.5.1 Narrow Lane 53
4.5.2 Wide Region 55
4.6 Pedal Circuit Failure Modes 56
4.6.1 Sensor Failures 56
4.6.2 Calibration 58
4.6.3 Electrical Noise 58
4.6.4 Resistive Faults and Contaminant Intrusion 60
4.6.5 Power Supply Variations 83
4.7 Multiple Failures 88
4.8 Resistive Faults between VPA1 and VPA2 and Vehicle Behavior on Restart 90
4.8.1 Non-linear Mode of Operation 93
4.9 Multiple Series Resistive Faults Leading to Low Supply Voltage 95
4.9.1 Low Voltage at Both Supply Terminals at Pedal End 96
4.9.2 Low Voltage Due to Power Supply Overload 97
4.10 Summary 97
5 Throttle Body 99
5.1 Introduction 99
5.2 Throttle Circuit and Operation 101
5.2.1 Potentiometer Based Throttles 102
5.2.2 Hall Effect Sensors 105
5.2.3 Characterization Tests 108
5.3 Throttle-Body Related Fail-Safes 109
5.4 Throttle Position Learning 111
5.5 Throttle Circuit Failure Modes 111
5.5.1 Sensor Failure Modes 112
5.5.2 Calibration 113
5.5.3 Electrical Noise 113
5.5.4 Resistive Faults 113
5.5.5 Power Supply Variations 127
5.5.6 Valve Sticking/Stuck Throttle Valve Condition 129
5.6 Multiple Failures 130
5.7 Summary 131
6 ECM Hardware 132
6.1 Introduction 133
6.2 ECM Variations 135
6.2.1 Number of Processors 135
6.3 ECM Construction and Testing 137
6.3.1 Housing Construction 137
6.3.2 ECM Operating and Storage Temperatures 140
6.3.3 ECM Tests 140
6.3.4 ECM Connectors 142
6.4 ECM Design and Theory of Operation 142
6.5 Filters and Protection Components 143
6.5.1 EMI/ESD Protection 143
6.5.2 Summary 145
6.6 Power Supply 145
6.6.1 Configuration 145
6.6.2 Filtering 147
6.6.3 Potential Failure Modes 147
6.6.4 Summary 153
6.7 Processors 153
6.7.1 Main Processor 153
6.7.2 Sub Processor 158
6.7.3 Failure Modes 159
6.7.4 Toyota Tin Whisker Testing 167
6.7.5 ECM Inspections and Testing 168
6.7.6 Summary 170
6.8 Analog to Digital Converter 170
6.8.1 Failure Modes 170
6.8.2 Summary 178
6.9 Throttle Motor Driver IC 178
6.9.1 Principle of H-Bridge Configuration 178
6.9.2 Logic Section 179
6.9.3 Failure Modes 180
6.9.4 Summary 187
6.10 Summary 188
7 ECM Software 190
7.1 Introduction 190
7.2 Approach 190
7.3 Flow Review 193
7.4 Static Analysis 193
7.4.1 Module Selection 194
7.4.2 PolySpace ® Results 194
7.4.3 2002 V6 Camry 194
7.4.4 2007 V6 Camry 196
7.4.5 Summary 199
 7.5 Mirroring 200
7.6 Error Correction Code (ECC) 201
7.7 Resource Locking 201
7.8 Test Data/Validation Report Review 202
7.9 Hardware-in-the-Loop Simulation 202
7.9.1 Input Variables 203
7.9.2 Tests performed 204
7.9.3 Summary 209
7.10 Summary 210
8 Other Hardware and System Level Considerations 212
8.1 Introduction 212
8.2 Electromagnetic Interference (EMI) 212
8.3 Latch-up 215
8.3.1 Causes of Latch-Up 215
8.3.2 Protection against Latch-Up 217
8.3.3 System Design 221
8.4 Software System Guards 223
8.4.1 Summary 230
8.5 Cruise Control System 231
8.5.1 Modes of Control 233
8.5.2 Cruise Control and Unintended Acceleration 236
8.6 System Level Protection Features 236

LINK DOWNLOAD

Chuyên mục: C. Bài giảng C. Bài giảng chuyên ngành Cơ khí - Chế tạo máy (Mechanical & Manufacturing Engineering) C. Bài giảng kỹ thuật khác