There exist large amount of data and frequent transmission of data in virtual environment chassis dynamometer test system. To deal with the limitations of real-time data transmission and data throughput of the system, a data distribution service (DDS) technology is applied into the virtual environment chassis dynamometer test system. Based on the principle analysis of the virtual environment chassis dynamometer test and data transmission requirements, through the research of DDS technology and application, a virtual environment chassis dynamometer test system based on DDS technology is constructed. The key technical problems of DDS data transmission in the test system are solved through a series of implementations, including establishing subscribing models for different members, registering data types, defining themes, designing DDS interface classes, and encapsulating DDS interfaces. The data transmission delay and throughput of the test system are tested and analyzed, and test results show that the delay is only 9.4 ms and the data transmission throughput can reach 20 Mbit/s for the data volume reaches 4000 kB, which meets the requirements of vehicle chassis dynamometer virtual test system.
ZHANG Xiaorui, ZHOU Zhili
. Application of DDS Technology in Virtual Environment Chassis Dynamometer Test[J]. Journal of Applied Sciences, 2021
, 39(6)
: 995
-1005
.
DOI: 10.3969/j.issn.0255-8297.2021.06.010
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