汽车工程学报2025，Vol.15Issue(4)：497-507,11.DOI:10.3969/j.issn.2095-1469.2025.04.07
基于改进差分算法的汽车ECU远程升级回滚策略
Rollback Strategy for Remote Automotive ECU Upgrades Based on Improved Differential Algorithm
摘要
Abstract
To address the inefficiency and weak robustness of existing rollback methods when a remote update of automotive ECU fails,this paper designs an efficient and stable upgrade rollback strategy.Firstly,an optimized rollback backup method and a comprehensive security-verification strategy are proposed to enhance rollback stability.Then,to avoid the long duration of traditional full rollback,a differential rollback technique based on an improved Bsdiff algorithm is proposed.The improved algorithm can significantly increase rollback efficiency by using the higher-ratio LZMA2(Lempel-Ziv-Markov chain-Algorithm 2)compression and optimizing the patch format.Finally,the proposed strategy is tested on real-vehicles.The results show that the rollback strategy using the improved differential algorithm reduces rollback time by 84.69％,and achieves a 100％test-case pass rate.The proposed strategy preserves vehicle functionality when an ECU upgrade fails while improving rollback efficiency.关键词
空中在线升级技术/差分算法/车载ECU/回滚策略Key words
over-the-air technology/Bsdiff algorithm/in-vehicle ECU/rollback strategy分类
交通工程引用本文复制引用
胡杰,邓佳慧,徐文才,岳意娥,范志容..基于改进差分算法的汽车ECU远程升级回滚策略[J].汽车工程学报,2025,15(4):497-507,11.基金项目
湖北省中央引导地方科技发展专项(2023CGB005) （2023CGB005）
