Abstract
The paper aims at pressure compensation control of bus air brake system in under-pressure state, based on SAE J1939 protocol, using CAN bus technology, the nodes such as vehicle status data acquisition node, brake system pressure information collection node, brake pressure compensation controller node, brake actuator system node, test and diagnostic node were defined, hardware and software of communication interface were designed, under-pressure compensation control network of bus air brake system was built and test, the test results show reliability, stability, real-time of the network meet the requirements of brake control.
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