嵌入式 PLC 系统自动测试中数字滤波算法研究

摘要

嵌入式PLC系统自动测试是对嵌入式PLC系统进行全面的功能、性能测试，以保证嵌入式PLC系统的可靠性。数字滤波算法决定了自动测试系统的速度和精度，是自动测试中信号采集最重要的部分。在介绍了嵌入式PLC系统整体架构以及自动测试系统组成后，分析了现有滤波算法的优缺点，在此基础上结合嵌入式PLC系统的测试要求，修改与改进了一种滤波算法，为测试提供了精确、高效的数据来源。%Comprehensive function testing and performance testing are conducted through the automatic test for embedded PLC system to ensure the reliability of embedded PLC system .The speed and accuracy of automatic test system are determined by the digital filtering algorithm ,it is the most important part of signal acquisition in the automatic test .The advantages and disadvantages of existing filtering algorithms are analyzed after introduction to the overall architecture of the embedded PLC system and the composition of automatic test system .Based on the analysis ,combined with the test requirements of the embedded PLC system ,a filtering algorithm is modified and improved to provide accurate and efficient data sources for the test .