数控系统第三方测试可靠性数据处理技术的研究与实现

发布时间：2018-07-05 19:29

本文选题：数控系统 + 可靠性数据　；参考：《中国科学院大学(中国科学院沈阳计算技术研究所)》2017年硕士论文

【摘要】：数控系统被称为机床的“灵魂”和“大脑”,它的可靠性直接关系着高档数控机床的发展。可靠性测试会产生大量的运行状态数据,数据的有效性和完备性是获得真实的数控系统可靠性信息的基础。因此,论文从数据传输的可靠性、数据处理的规范化和高效存储方面入手,研究数控系统可靠性数据的处理技术,为数控系统的可靠性研究提供技术支持。首先,分析可靠性研究需求,确定了传输和存储的可靠性数据,由于不同终端之间的数据传输和数据操作需求不同,针对不同的数据制定了合适的传输计划:采集端和服务器端结合多线程、多缓冲技术传输数据,服务器端和用户端采用Ajax和WebSocket通信,服务器端和第三方测试中心也采用多线程和多缓冲技术并且设计了断点续传和数据压缩算法传输数据。其次,根据数控系统静态数据和动态数据的变化特点,设计缺省值和冗余数据的处理方法:采用牛顿插值法和线性外插法解决缺省值问题,设计算法解决冗余问题。根据不同种类可靠性数据的特点和变化规律,设计了合适的压缩算法:改进LZW算法实现静态文本数据的压缩,改进旋转门算法压缩过程数据,对网络传输数据采用二级压缩方式进行压缩。最后,分析可靠性数据的高效存储需求,建立可靠性数据模型,采用内存数据库和关系数据库结合的存储策略实现可靠性数据的高效存储和访问,并且优化存储过程加快数据存取速度。实验表明,论文研究的可靠性数据处理技术能够为数控系统第三方测试提供可靠的、完备的、规范化的数据,并且实现了可靠性数据的有效传输和高效存储,减少传输带宽和存储空间。
[Abstract]:Numerical control system is called "soul" and "brain" of machine tool, its reliability is directly related to the development of high grade numerical control machine tool. Reliability testing will produce a large number of running state data. The validity and completeness of the data is the basis of obtaining the real reliability information of NC system. Therefore, this paper starts with the reliability of data transmission, standardization and efficient storage of data processing, studies the processing technology of reliability data of CNC system, and provides technical support for the research of reliability of CNC system. First of all, the requirements of reliability research are analyzed, and the reliability data of transmission and storage are determined. Because of the difference of data transmission and data operation requirements between different terminals, According to the different data, the appropriate transmission plan is made: the collection end and the server end combine multi-thread, the multi-buffer technology transfers the data, the server and the user end adopt the Ajax and the Web socket to communicate, Multithreading and multi-buffering techniques are also used in the server and third party test centers, and breakpoint continuation and data compression algorithms are designed to transmit data. Secondly, according to the change characteristics of static and dynamic data in NC system, the methods of dealing with default and redundant data are designed: Newton interpolation method and linear extrapolation method are used to solve the default value problem, and the algorithm is designed to solve the redundancy problem. According to the characteristics and variation rules of different kinds of reliability data, a suitable compression algorithm is designed: improved LZW algorithm to compress static text data, improved rotary gate algorithm to compress process data, The data of network transmission is compressed by two-stage compression method. Finally, the requirement of high efficiency storage of reliability data is analyzed, the reliability data model is established, and the storage strategy combining memory database and relational database is adopted to realize the efficient storage and access of reliability data. And optimize the stored procedure to speed up the data access. The experimental results show that the reliability data processing technology studied in this paper can provide reliable, complete and standardized data for the third party testing of NC system, and realize the effective transmission and efficient storage of the reliability data. Reduce transmission bandwidth and storage space.
【学位授予单位】：中国科学院大学(中国科学院沈阳计算技术研究所)
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TG659

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