Model Architecture and Interfaces Recommended Practice for Ground Vehicle System and Subsystem Dynamical Simulation

Ground Vehicle Standard
J3049_201508
Issued

Published August 27, 2015 by SAE International in United States

Sector:

Automotive

Issuing Committee:

Dynamical Modeling and Simulation Committee

Language: English

Scope

The “Model Architecture and Interfaces Recommended Practice for Ground Vehicle System and Subsystem Dynamical Simulation” defines the architectural structure of a ground vehicle system dynamical model by partitioning it into subsystem models and by defining subsystem interfaces required to enable plug-and-play operation of a dynamical simulation models. All types of ground vehicle were considered in the development of the architecture, such as, passenger cars, light and medium duty trucks, heavy duty tractor trailer trucks, and vehicles/equipment for military, farming, construction, and mining. Versatility of this architectural partitioning is demonstrated by showing how it can be applied to different vehicle configurations. Application examples of architecture are provided for a large number of the publicly known ground vehicle configurations in production, testing, or development.

This recommended practice encompasses standards to enable seamless plug-and-play reusability of dynamical models for simulating the functional behavior of a ground vehicle system and its subsystems. A single ground vehicle system is the system of interest. The architecture and interfaces support vehicle models that describe vehicle motion in one dimension (longitudinal), two dimensions (longitudinal and lateral or longitudinal and vertical), and three dimensions (longitudinal, lateral, and vertical). The scope includes defining recommended practices for:

1
Model architectural structure, and interfaces that enable the plug-and-play development of: (1) a top-level ground vehicle system model from subsystem models, and (2) subsystem models from other subsystem models; and
2
Model architecture and interfaces for all hardware and controller interfaces; however, the internal structure of control algorithms and software will not be included in this recommended practice.

Since, other groups (such as, AUTOSAR) are addressing architecture and interfaces of models for control applications and software; they are not included in the scope of the recommended practice. However, in the future, the internal structure of control algorithms and software should be addressed for special issues of dynamical modeling and simulation of ground vehicle systems that are not covered by other standards groups.

Rationale

Increasingly, global vehicle engineering teams span domains of engineering and physics within organizations and include external collaborations between commercial businesses (original equipment manufacturers (OEMs), and suppliers), government agencies, and research institutions. For increased efficiency, reduced costs, faster design iterations, and fewer hardware prototypes, these teams use math-based engineering methods to build and test virtual ground vehicles in simulation environments. These types of inter-organizational engineering collaborations require a common shared simulation model for an entire ground vehicle system and/or the related subsystems of which it is composed. Use of dynamical modeling and simulation for virtual engineering development and testing of the functional performance of ground vehicles by inter-organizational teams has increased and resulted in a need for standardizing the architecture and interfaces of a ground vehicle system model by partitioning it into subsystem models to enable plug-and-play of subsystem simulation models. A standardized ground vehicle system model with an architectural structure partitioned into subsystem models, and with defined subsystem model interfaces enables: (1) model reuse, (2) division of modeling tasks across multifunctional teams, (3) parallel model development, verification and validation, and (4) rapid and efficient integration of subsystem models for reduced development time and costs. The recommended practice for model architecture and interfaces will: (1) create a common language, (2) increase productivity of processes, (3) promote uniform testing, (4) permit common interfaces, and (5) reduce costs.

Data Sets - Support Documents

Title	Description	Download
[Unnamed Dataset 1]
[Unnamed Dataset 2]
Table 1	Environment Subsystem interface connections
Table 2	Driver/Passengers Subsystem interface connections
Table 3	Vehicle Subsystem interface connections
Table 4	Atmospheric Subsystem interface connections
Table 5	Road/Terrain Subsystem interface connections
Table 6	Traffic/Surroundings Subsystem interface connections
Table 7	Remote HMI Subsystem interface connections
Table 8	Driver Subsystem interface connections
Table 9	Remote Driver Subsystem interface connections
Table 10	Passengers Subsystem interface connections
Table 11	Vehicle Supervisory Control Subsystem interface connections
Table 12	Power Subsystem interface connections
Table 13	Chassis Subsystem interface connections
Table 14	Trailer 1 Subsystem interface connections
Table 15	Power Supervisory Control Subsystem interface connections
Table 16	Electrical Subsystem interface connections
Table 17	Thermal Management Subsystem interface connections
Table 18	Fuel Subsystem interface connections
Table 19	Propulsion Power Subsystem interface connections
Table 20	Transmission Subsystem interface connections
Table 21	Driveline Subsystem interface connections
Table 22	Auxiliary Power Subsystem interface connections
Table 23	Chassis Supervisory Control Subsystem interface connections
Table 24	Steering Subsystem interface connections
Table 25	Braking Subsystem interface connections
Table 26	Wheels/Tracks Subsystem interface connections
Table 27	Suspension Subsystem interface connections
Table 28	Body-Frame Subsystem interface connections
Table 29	Power Take-Off Accessories Subsystem interface connections
Table 30	Body-Frame Supervisory Control Subsystem interface connections
Table 31	Under Body Subsystem interface connections
Table 32	Upper Body Subsystem interface connections
Table 33	Cabin Interior Subsystem interface connections
Table 34	Cabin Climate Subsystem interface connections
Table 35	Trailer i Supervisory Control Subsystem interface connections
Table 36	Trailer i Steering Subsystem interface connections
Table 37	Trailer i Braking Subsystem interface connections
Table 38	Trailer i Wheels/Tracks Subsystem interface connections
Table 39	Trailer i Suspension Subsystem interface connections
Table 40	Trailer i Body-Frame Subsystem interface connections
Table 41	Trailer i Power Take-Off Accessories Subsystem interface connections
Table 42	Trailer i Body-Frame Supervisory Control Subsystem interface connections
Table 43	Trailer i Under Body Subsystem interface connections
Table 44	Trailer i Upper Body Subsystem interface connections
Table 45	Trailer i Interior Subsystem interface connections
Table 46	Trailer i Climate Subsystem interface connections
Table 47	SI base units for measuring physical quantities
Table 48	Derived units created from the SI base units
Table 49	Power transfer port types
Table 50	Physical conditions port types
Table 51	Controller port types
Table 53	Vehicle Information Bus architecture definition
Table 54	Subsystem scope and content

Issuing Committee

Dynamical Modeling and Simulation Committee

Background Need: Complexity of automotive systems (as used in passenger cars, heavy duty trucks, military vehicles, and agricultural and construction equipment) is increasing at a rapid rate along with competitive pressures to reduce product development cycle times. Development of these modern automotive systems requires highly coordinated collaboration across several disciplines of engineering and physics within organizations, and between a network of OEM’s, suppliers, research laboratories and universities across the industry and around the globe. To keep up with technology change and competitive pressures, these global teams need virtual engineering methods for responsive, cost effective and efficient collaborative development.

The future development of automotive systems will continue to be driven by the same forces and trends that they experience today. These factors will require continual improvements in terms of higher fuel efficiency, higher quality and reliability, lower emissions, and improved safety, while providing more value to the customer at a lower cost. To minimize costs and time, systems will be developed by global teams collaborating across an industry network using virtual engineering processes and methods with minimal physical builds required only to confirm designs and performance. Virtual engineering of automotive systems will require dynamical modeling and simulation (DM&S) using the integration of models from different companies and disciplines with varying levels of abstraction (fidelity and complexity). Additionally, DM&S is a critical enabler for an integrated development process needed to establish seamless and efficient flows of new technologies from research to production.

In order to make global enterprise and cross-enterprise virtual engineering methods cost effective, efficient and robust, automotive industry wide standards for dynamical modeling and simulation are required.

Objective: The objective of the committee is to establish modeling and simulation standards to facilitate dynamical modeling and simulation of automotive systems. These standards will facilitate integrated and multidisciplinary virtual engineering processes for highly coordinated and collaborative engineering work. SAE Standards, Recommended Practices and Information Reports (standards) will be established and published to facilitate and promote cost effective, efficient and robust: 1) model and data sharing and reuse, 2) seamless modeling, simulation and analysis workflows, 3) virtual engineering processes, 4) modeling and simulation tool interoperability, 5) model portability across simulation tools, and 6) verification and validation.

Scope: The committee’s activities will develop standards for dynamical models and simulations that mathematically describe an automotive system’s time varying response, behavior and interactions of subsystems and components. These standards will include processes, methods, performance metrics and analyses related to dynamical modeling and simulation of automotive systems. The focus is on standards to make models reusable and simulation results predictable and repeatable across engineering and physics disciplines, application tools, and the automotive industry.

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Reference

Number	Title
ISO 80000-1	This document is not part of the subscrption.
ISO 8855	This document is not part of the subscrption.
J2546_200202	Model Specification Process Standard
J3016_201609	Taxonomy and Definitions for Terms Related to Driving Automation Systems for On-Road Motor Vehicles
J670E_197607	Vehicle Dynamics Terminology
TSB003_199905	Rules for SAE Use of SI (Metric) Units

Ground Vehicle Standard	Model Description Documentation Recommended Practice for Ground Vehicle System and Subsystem Simulation
Ground Vehicle Standard	Antilock Brake System Review
Technical Paper	Active Roll Control of a Semi-Trailer

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Model Architecture and Interfaces Recommended Practice for Ground Vehicle System and Subsystem Dynamical Simulation

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