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BS ISO 21233:2021

BS ISO 21233:2021

$142.49

Heavy commercial vehicles and buses. Vehicle dynamics simulation and validation. Closing-curve test

Published By Publication Date Number of Pages
BSI 2021 24
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This document specifies a method for comparing simulation results from a vehicle model to measured test data for an existing vehicle according to closing-curve tests as specified in ISO 11026. The purpose of the validation is to demonstrate that the vehicle dynamics simulation, combined with an integrated electronic stability control (ESC) system, can predict the roll and yaw stability behaviour of a physical vehicle, including the ESC system interventions, during a closing-curve test. The simulation method can be either hardware-in-the-loop [with the original electronic control unit (ECU) on a HiL test stand] or software-in-the-loop, based on a software code generated from the same source as for the ECU in the real vehicle. This document applies to heavy vehicles, including commercial vehicles, commercial vehicle combinations, buses and articulated buses as defined in ISO 3833 (trucks and trailers with a maximum weight above 3,5 tonnes and buses and articulated buses with a maximum weight above 5 tonnes, according to ECE and EC vehicle classification, categories M3, N2, N3, O3 and O4).

PDF Catalog

PDF Pages PDF Title
2 National foreword
6 Foreword
7 Introduction
9 1 Scope
2 Normative references
3 Terms and definitions
10 4 Principle
5 Variables
11 6 Simulation model parameters and requirements
6.1 General
6.2 Basic vehicle parameters
6.3 Estimated vehicle parameters
6.3.1 Principal moments of inertia
12 6.3.2 Tyre force characteristics
6.3.3 Damper characteristics
6.4 Electronic stability control
13 6.5 Braking system
6.6 Additional model requirements
7 Physical testing
7.1 General
7.2 Test method
14 7.3 Evaluation of test results
8 Simulation
8.1 General
8.2 Data recording
8.3 Documentation
15 9 Comparison of simulation and physical tests
9.1 General
9.2 Dynamic vehicle behaviour without ESC
9.2.1 Wheel lift-off
9.2.2 Comparison of yaw velocity and lateral acceleration
18 9.3 Dynamic vehicle behaviour with ESC
9.3.1 ESC intervention
19 9.3.2 Vehicle behaviour after ESC intervention
21 9.4 ESC safety margin gained from the measurements with and without ESC
22 Annex A (informative) Validation report

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BS ISO 21233:2021
$142.49