Model-Based Calibration Toolbox™ 3.4

Product Description

• Introduction and Key Features
• Working with the Model-Based Calibration Toolbox
• Fitting the Model
• Calibrating the Powertrain

Calibrating the Powertrain

The CAGE (CAlibration GEneration) tool in the Model-Based Calibration Toolbox is a graphical user interface that lets you calibrate lookup tables for your electronic control unit (ECU). With CAGE, you can fill and optimize lookup tables in ECU software using Model Browser models.

Calibrating Control Features

CAGE lets you generate optimal calibrations for lookup tables that control engine functions, such as spark ignition, fuel injection, and inlet and exhaust valve timing. Calibration of these features typically involves trade-offs between engine performance, economy, reliability and emissions. With CAGE you can:

• Make trade-offs between competing design objectives
• Deal with multiple constraints
• Perform weighted optimizations based on typical drive cycles
• Use built-in or custom optimization routines
• Manipulate table values with custom functions
• Export calibrations to ETAS INCA and ATI Vision

CAGE also lets you perform multiobjective optimizations, which are useful for illustrating trade-off possibilities.


Left: Filling a table based on an engine response model. Right: Viewing optimized settings for engine control features. Click on image to see enlarged view.

Calibrating Estimator Features

ECU software often includes features for estimating states that are too difficult or costly to measure in production vehicles, such as torque and borderline spark. Using CAGE, you can describe estimator features graphically using Simulink block diagrams, fill the lookup tables for these features, and then compare the estimators to empirical engine models made from measured engine data. CAGE lets you:

• Generate optimal calibrations directly from empirical engine models
• Compare calibrations to test data
• Export calibrations to ETAS INCA and ATI Vision