automotive transmission - automated mechanical transmission
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Automotive Transmission - Automated Mechanical TransmissionTRANSCRIPT
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服务未来汽车人才
Technische Gemeinschaft der Chinesisch-Deutschen Automobilindustrie
Automotive Transmission2 – Automated Mechanical Transmission
Priciple and ECU Control of AMT
M.Sc. Lin Li, M.Sc. Tinghui Hu, M.Sc. Jiafei Peng
Braunschweig, 10.07.2010
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Contents
• AMT Structure and Principle
• AMT Actuator Types
• ECU Control Architecture for AMT
• Advantage and Disadvantage of AMT
• Summary
Automotive Transmission
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Contents
• AMT Structure and Principle
• AMT Actuator Types
• ECU Control Architecture for AMT
• Advantage and Disadvantage of AMT
• Summary
Automotive Transmission
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AMT Structure and PrincipleTransmission of VW Lupo 3L
• Gearbox
• Clutch
• Sensors
• Actuators
• Other accessories
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AMT Structure and PrinciplePrinciple of Manual Transmission
• The movement of gearstick in 2 directions
• Blue arrows show the movement of gear select
• Red arrows show the movement of gear engaging
• All movements triggered by driver
[VW SSP]
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AMT Structure and PrinciplePrinciple of AMT
• Replace the “mind” of driver with ECU
• Replace the “feel” of driver with sensors
• Replace the “hand” of driver with actuators
[VW SSP]
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AMT Structure and PrinciplePrinciple of AMT
• Replace the “mind” of driver with ECU
• Replace the “feel” of driver with sensors
• Replace the “hand” of driver with actuators
[VW SSP]
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AMT Structure and PrincipleTransmission of VW Lupo 3L
• Gearbox
• Clutch
• Sensors
• Actuators
• Other accessories
Hydraulic pump
Clutch Actuator
Potentiometer
Gear Actuator
Gearbox
Engine
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AMT Structure and PrincipleActuators for Gear Select and Engaging
Gea
r E
ngag
ing
Gear Select
Which actuator for which movement?
1 3
2 4
5R
N
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AMT Structure and PrincipleGear Actuators in VW Lupo 3L
Gear Actuator
Clutch Actuator
• 2 valves for gear select
• 2 valves for gear engaging
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AMT Structure and PrincipleValves for Gear Select and Engaging
[VW SSP]
• 2 valves for gear select
• 2 valves for gear engaging
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AMT Structure and PrincipleValves for Gear Select and Engaging
[VW SSP]
• 2 valves for gear select
• 2 valves for gear engaging
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AMT Structure and PrincipleGear Select
• On-off valve
• Electrical binary input
• 4 possible positions (Combination of 2 on-off valves)
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AMT Structure and PrincipleValves for Gear Select and Engaging
[VW SSP]
• 2 valves for gear select
• 2 valves for gear engaging
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AMT Structure and PrincipleValves for Gear Select and Engaging
• 2 3-way proportional valves
• Precise control of collar (dog gear)
• Position or force control
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Contents
• AMT Structure and Principle
• AMT Actuator Types
• ECU Control Architecture for AMT
• Advantage and Disadvantage of AMT
• Summary
Automotive Transmission
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AMT Actuator TypesManual Transmission
by HMTI
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AMT Actuator TypesAutomated Mechanical Transmission
Sensors by HMTI
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AMT Actuator TypesActuators (Sorted by Source of Power)
Hydraulic
Machine difficulty
Leakage
Oil Requirement
2
Pneumatic
Condensability of Air↓
Performance
Volume
1
Electric
Drift
Control Accuracy
3
Heavy-dutyCommercial
Vehicle
Heavy-dutyCommercial
Vehicle
Suitable for any type
Suitable for any type
Suitable for any type (Light-duty)Suitable for any type (Light-duty)
Viscosity → Performance
Power/Mass
Spatial Arrangement
Cost
Power Consumption
Cost
Machining Process
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AMT Actuator TypesComparison of 3-type Actuators
Type
Property
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AMT Actuator TypesPneumatic Actuator
by HMTI
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AMT Actuator TypesHydraulic Actuator
1. Oil Supply Orifice
2. Hydraulic Cylinder
3. Piston Rod
4. Select and Shift Fork
5. Oil Outlet Orifice
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AMT Actuator TypesElectric Actuator
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Contents
• AMT Structure and Principle
• AMT Actuator Types
• ECU Control Architecture for AMT
• Advantage and Disadvantage of AMT
• Summary
Automotive Transmission
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ECU Control Architecture for AMTAutomotive Transmission
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ECU Control Architecture for AMTSoftware Development Flow
• Hardware Driver: I/O, A/D, PWM, CAN, LIN…
• Basic Software
• Simulink / Stateflow Modeling (Inputs, Outputs and Algorithmus)
• Application SW Components Implementing
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ECU Control Architecture for AMTPossible Inputs and Outputs for Transmission ECU
Recieving Rx Signals Sending Tx Signals
Airbag State Gearshift Lock
Emotor State Clutch Status
Gateway State Driving Position
Hybrid State Aimed Gear Position
Motor State Aimed Motor Speed
Engine Cooling Temperature StartStopp Info
ABS Throttle Position Input Motor Speed
ABS Load Value Charisma Status
ABS Pedal Position Clutch Temparature
Rad Bremse Moment Additional Warnings
Gearshift Status Sperre Errors
Gearshift Sensor Position
Gearshift Status
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ECU Control Architecture for AMTECU Software Module Architekture Example
Communication Services
Microcontroller
Real Time Operating System
Microcontroller Drivers I/O Drivers
I/O Hardware Abstraction
Memory HW Abstraction
System Services
Onboard Device Abstraction
Communication Drivers
Communication HW Abstraction
Application
PO
RT
Driv
erP
OR
T D
river
Memory Abstraction Interface
Memory Abstraction Interface
I/O Hardware Abstraction
I/O Hardware Abstraction
WatchdogInterface
WatchdogInterface
AD
C D
river
AD
C D
river
PW
M D
river
PW
M D
river
DIO
Driv
erD
IO D
river
CanInterface
CanInterface
Boo
tloa
der
Boo
tloa
der
FlexRayInterfaceFlexRayInterface
Memory Drivers
LIN Interface
LIN Interface
Memory Services
COMCOM DCMDCMECU State ManagerECU State Manager
Watchdog ManagerWatchdog Manager
Watchdog Driver
Watchdog Driver
MCU DriverMCU Driver EEPROMEEPROM FLASHFLASH SPI
Handler DriverSPI
Handler DriverLIN
DriverLIN
DriverCANDriverCANDriver
FlexRay Driver
FlexRay Driver
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ECU Control Architecture for AMTV Model
Test Grade SW Test
Test Grade SW Integration Test
Test Grade SW Modul Test
SW Fine Design
SW Raw Design
SW- Requirements-Spezification
Software-Code
Compliance, Risk, Quality Management
Review-Process Test-Process
CRQ-Process
Requirements from OEM
Development-Process
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Contents
• AMT Structure and Principle
• AMT Actuator Types
• ECU Control Architecture for AMT
• Advantage and Disadvantage of AMT
• Summary
Automotive Transmission
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Advantage and Disadvantage of AMTAutomotive Transmission
• Advantages:
• High efficiency
• Low costs
• Relieve the driver from gear shifting and prevent driving error
• Better fuel consumption
• Better drivng comfort
• Disadvantages:
• Tractive force interruption during shifting process (Shift Quality)
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服务未来汽车人才
Technische Gemeinschaft der Chinesisch-Deutschen Automobilindustrie
Thank You!M.Sc. Lin Li, M.Sc. Tinghui Hu, M.Sc. Jiafei Peng
TG-CDATechnische Gemeinschaft der Chinesisch-Deutschen Automobilindustrie
www.tg-cda.de