A Method of Reliability Data Compression in Numerical Control System
A numerical control system and data compression technology, applied in the numerical control field, can solve the problems such as the inability to effectively compress the reliability data of the numerical control system.
Active Publication Date: 2021-03-05
SHENYANG GOLDING NC & INTELLIGENCE TECH CO LTD
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[0005] A compression algorithm has different compression effects on different types of data. The reliability data of the CNC system is not a single type, so using a single compression algorithm cannot effectively compress the reliability data of the CNC system. It is necessary to design compression for different types of reliability data algorithm
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[0067] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.
[0068] The method of the invention is a compression algorithm research for different types of reliability data in a numerical control system. The reliability data collected by the CNC system mainly includes: equipment information data, configuration data, operating status data, diagnostic data, etc. According to the characteristics and functions of the data, it can be divided into static data, trigger data, time value, process data and network transmission data.
[0069] Static data includes equipment information, configuration data, diagnostic data, etc.; equipment information includes CNC system model, number, software version, hardware version, etc.; servo and motor model, number, software version, hardware version, etc.; machine tool model, number and other data. Configuration data includes CNC system and servo parameters, user proc...
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The invention relates to a numerical control system reliability data compression method. The numerical control system reliability data compression method comprises the following steps: compressing static data with an improved LZW algorithm combining a static dictionary with a dynamic dictionary separately according to the reliability data type of the numerical control system; compressing trigger class data or time values with the RLE algorithm of a PCX file; compressing process data with an improved revolving door algorithm storing deviation points; and compressing network transmission data with a two level compression method combining the static dictionary with the Huffman algorithm. It is proved that the numerical control system reliability data compression method can efficiently compress the reliability data of the numerical control system, and decompressing the data does not affect the reliability test of the numerical control system.
Description
technical field [0001] The invention relates to a data compression technology in the technical field of numerical control, in particular to a method for compressing reliability data of a numerical control system. Background technique [0002] The reliability data of the numerical control system is the basis for improving product reliability, and plays a key guiding role in the location and elimination of early faults and the development of new products. In order to test the reliability of the CNC system, it is necessary to collect and save the reliability data for a long time, which requires a considerable storage space. In order to ensure that reliability data can be stored in real time, save storage space and cost as much as possible, and reduce bandwidth occupied in network transmission, reliability data needs to be compressed. [0003] Data compression algorithms can be divided into lossy compression and lossless compression according to their compression accuracy. Com...
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IPC IPC(8): H03M7/40
CPCH03M7/4037
Inventor 郑飂默林新然孙一兰李伦兴韩旭陈世康
Owner SHENYANG GOLDING NC & INTELLIGENCE TECH CO LTD