ISO 22140:2021
Passenger cars — Validation of vehicle dynamics simulation — Lateral transient response test methods
This document specifies methods for comparing computer simulation results from a vehicle mathematical model to measured test data for an existing vehicle according to ISO 7401. The comparison is made for the purpose of validating the simulation tool for this type of test when applied to variants of the tested vehicle.
It is applicable to passenger cars as defined in ISO 3833.
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Variables
6 Simulation tool requirements
6.1 General
6.2 Mass and inertia
6.3 Tires
6.4 Suspensions
6.5 Steering system
6.6 Aerodynamics
6.7 Brake system
6.8 Powertrain
6.9 Active control system (ESC system, active roll control, etc.)
6.10 Data acquisition
6.11 Driver controls
7 Physical testing
7.1 General
7.2 Measuring equipment
7.3 Test conditions
7.4 Filtering of measured data
7.5 Test methods
7.5.1 Step input
7.5.2 Sinusoidal input — One period
7.5.3 Random input
7.5.4 Pulse input
7.5.5 Continuous sinusoidal input
8 Simulation
8.1 General
8.2 Data recording and processing
8.3 Simulation method
8.3.1 Step input
8.3.2 Sinusoidal input — One period
8.3.3 Random input
8.3.4 Pulse input
8.3.5 Continuous sinusoidal input
9 Comparison between simulation and physical test results
9.1 Step input
9.2 Sinusoidal input — One period
9.3 Random input, pulse, and continuous sinusoidal input
9.3.1 General
9.3.2 Calculation of boundary point
9.3.3 Tolerance for frequency function
9.3.4 Validation criteria
10 Documentation
Bibliography
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Variables
6 Simulation tool requirements
6.1 General
6.2 Mass and inertia
6.3 Tires
6.4 Suspensions
6.5 Steering system
6.6 Aerodynamics
6.7 Brake system
6.8 Powertrain
6.9 Active control system (ESC system, active roll control, etc.)
6.10 Data acquisition
6.11 Driver controls
7 Physical testing
7.1 General
7.2 Measuring equipment
7.3 Test conditions
7.4 Filtering of measured data
7.5 Test methods
7.5.1 Step input
7.5.2 Sinusoidal input — One period
7.5.3 Random input
7.5.4 Pulse input
7.5.5 Continuous sinusoidal input
8 Simulation
8.1 General
8.2 Data recording and processing
8.3 Simulation method
8.3.1 Step input
8.3.2 Sinusoidal input — One period
8.3.3 Random input
8.3.4 Pulse input
8.3.5 Continuous sinusoidal input
9 Comparison between simulation and physical test results
9.1 Step input
9.2 Sinusoidal input — One period
9.3 Random input, pulse, and continuous sinusoidal input
9.3.1 General
9.3.2 Calculation of boundary point
9.3.3 Tolerance for frequency function
9.3.4 Validation criteria
10 Documentation
Bibliography