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Rapid Prototyping with the Controller Area Network (CAN)
Technical Paper
2001-01-1224
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Event:
SAE 2001 World Congress
Language:
English
Abstract
Rapid Control Prototyping (RCP) tools are becoming an essential part of the development process of modern automotive control strategies. The interface between the RCP real-time hardware and the existing electronic control unit (ECU) can be established via Controller Area Network (CAN). In a typical production ECU, the limited availability of unused message objects and the rate of data transfer on the CAN bus are limiting factors which influence the mechanism used for communication between the ECU and the RCP system. This document outlines the details involved in a CAN-based selective bypass approach. A data transfer mechanism is proposed which makes use of only two message objects to establish communication. The introduced time delays and the synchronization of the time driven main tasks are discussed. The proposed mechanism is validated through engine testing and the implementation details are described as well. A standard realization of the proposed mechanism is presented based on the CAN Calibration Protocol (CCP) standard. The CAN-based approach to RCP is shown to be a viable alternative to a Dual Port RAM (DPRAM)-based approach, especially in light of the fact that the hardware flexibility is maintained when the original ECU is being upgraded.
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Authors
Citation
Yacoub, Y. and Chevalier, A., "Rapid Prototyping with the Controller Area Network (CAN)," SAE Technical Paper 2001-01-1224, 2001, https://doi.org/10.4271/2001-01-1224.Also In
Electronic Engine Controls 2001: Sensors & Actuators, Hardware, Tools and Validation
Number: SP-1586; Published: 2001-03-05
Number: SP-1586; Published: 2001-03-05
References
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- Robert Bosch GmbH, Robert Bosch GmbH CAN Specification, version 2.0 1991
- International Organization for Standardization Case postalle 56, CH-1211 Geneve 20, Switzerland Road vehicles - interchange of digital information - Controller area network (CAN) for high-speed communication, ISO 11898 1993
- Intel Corporation P.O. Box 7641, Mt. Prospect, IL 60056-7641 82527 Serial Communications Controller Architectural Overview, 1996, Order Number: 272410-003 1996
- Kleinknecht H. CCP - CAN Calibration Protocol version 2.0 1996