Overview
ISO 19365:2016 specifies a repeatable method for validating a vehicle dynamic simulation tool by comparing simulation outputs to measured test data from passenger cars subjected to the sine with dwell steering manoeuvre. The standard targets validation of models used to predict Electronic Stability Control (ESC) performance when applied to vehicle variants. It applies to passenger cars as defined in ISO 3833 and is based on established ESC test procedures (for example, FMVSS 126 and UN/ECE R13‑H).
Key Topics and Requirements
- Test principle: Compare simulation results to physical sine with dwell test series (robot-steered sine wave at 0.7 Hz with a 500 ms dwell at the second peak).
- Measured variables: steering‑wheel angle, yaw rate, and lateral acceleration.
- Simulation tool requirements (Clause 6): models must represent mass and inertia, tires, suspensions, steering system, aerodynamics, brake system, powertrain, active control systems (ESC), data acquisition and driver controls. Hardware-in-the-loop setups are within scope.
- Physical testing (Clause 7): vehicle conditioning, slowly increasing steer tests, and systematically increasing-amplitude sine with dwell test runs; data filtering and processing procedures are specified.
- Performance metrics (Clause 7.6 & 9): stability and responsiveness criteria, identification of the first run with ESC intervention, and defined metrics and tolerances for comparison between test and simulation.
- Validation workflow: A tool must first be validated for steady-state circular driving behaviour per ISO 19364 before sine with dwell validation.
- Documentation: Requirements for recording inputs, test conditions, processing methods and comparison results.
Practical Applications
- OEM vehicle dynamics engineers validating models used in virtual prototyping and variant evaluation.
- ESC and active safety system developers verifying algorithm behaviour across vehicle variants.
- Simulation tool vendors demonstrating compliance and predictive accuracy for customers.
- Automotive test laboratories and certification bodies assessing model fidelity for regulatory or development use.
Benefits:
- Reduces physical test iterations by increasing confidence in simulation predictions.
- Supports regulatory compliance and ESC performance assessment.
- Enables safer, faster evaluation of vehicle variants and control strategies.
Related Standards
- ISO 19364 - Passenger cars: vehicle dynamic simulation and validation - steady‑state circular driving behaviour (required precursor validation).
- ISO 3833 - Vehicle category and passenger car definitions (applicability).
For implementation, consult the full ISO 19365:2016 text for exact procedures, metric definitions and tolerance values.