| 常见抢答器PLC程序的误差分析与改进 |
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| 引用本文： | 汤文利.常见抢答器PLC程序的误差分析与改进[J].孝感职业技术学院学报,2013(4):100-103,67. |
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| 作者姓名： | 汤文利 |
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| 作者单位： | 湖北职业技术学院机电工程学院,湖北孝感432000 |
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| 摘 要： | 用PLC实现抢答器的各种功能，其原理是基于电气控制系统中的继电器一接触器控制电路，利用自锁和互锁功能实现。由于PLC采用的是集中采样、集中输出、循环扫描的工作方式，即串联逻辑控制，照搬继电器控制的编程方式，对于抢答器的抢答结果有很大误差。文章分析了误差产生的原因，并给出了消除误差的另一种编程方法。
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| 关 键 词： | PLC（可编程控制器） 抢答器 顺序扫描 实时控制 |
Error Analysis and Improvement of PLC Program of Common Answering Racer |
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| Institution: | TANG Wen - li ( Mechanical and Electrical Engineering Department, Hubei Polytechnic Institute, Xiaogan, Hubei 432000, China) |
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| Abstract: | The principle of realizing the functions answering racer by PLC program design is on the basis of the function of self - locking and interlocking in relay - contactor electric circuit. But the way PLC works is centralized sampling, centralized outputting and sequential scanning, that is series logic control, which adopts relay control programming and may leave a huge margin for error in answering racer. This paper analyzes the reasons and pro- vides another method to eliminate such kind of error. |
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| Keywords: | PLC （ Programmable Logic Controller） answering racer sequential scan real - time control |
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