Abstract: In the cloud manufacturing model,with the cloudization of massive manufacturing resources and the explosive growth of user demands,the traditional cloud manufacturing platform has problems such as insufficient computing power,lack of real-time data and difficulty in guaranteeing data security in the service selection link.To solve the above issues,a novel cloud manufacturing service selection method based on blockchain was proposed.The method combined subjective and objective weight analysis technology to design a distributed cloud manufacturing service selection model,which realized the transfer of computing power sources and decentralization to solve the problem of insufficient computing power;a double-chain blockchain data storage model based on the proof-of-result mechanism was proposed to ensure the real-time and security of contract data and delivery data generated at different time periods in the cloud manufacturing process.The experimental results showed that the method could simultaneously improve the speed and quality of cloud manufacturing service selection and realize real-time and secure storage of cloud manufacturing data,thus significantly improving the production and manufacturing efficiency.

Key words: cloud manufacturing, blockchain, service selection, quality of service, subjective and objective weights

摘要： 云制造模式下,随着海量制造资源的云化和用户需求的爆炸式增长,传统云制造平台在服务选择环节出现了计算能力不足、实时数据缺乏及数据安全难以保证等问题。为解决上述问题,提出一种基于区块链的新型云制造服务选择方法。该方法结合主客观权重分析技术设计分布式云制造服务选择模型,实现算力源的转移和去中心化,解决计算能力不足的问题;提出基于结果证明机制的双链区块链数据存储模型,保证云制造过程中不同时间段产生的合约数据和交付数据的实时性和安全性。实验结果表明,该方法能够同时提高云制造服务选择的速度和质量,并实现云制造数据实时且安全的存储,从而大幅提升生产制造效率。

关键词: 云制造, 区块链, 服务选择, 服务质量, 主客观权重