功能控制环境下信息单位编码的特性

T. B. Martyniuk, O. V. Voytsekhovska, M. A. Ochkurov, O. Y. Voinalovych
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引用次数: 0

摘要

对于功能性控制问题,存在一个特别紧迫的解决方案,即不仅在数据阵列的传输过程中,而且在作为车载系统一部分的控制装置的激活过程中,都要确保免疫。因此,在控制设备中,首先,有必要抓住可能导致其失败的所谓“竞赛信号”发生的时刻,其次,实时纠正这种错误情况,以确保整个系统的有效运行。从这个意义上说,分析特定类型控制装置抽象综合过程中所使用的信息编码方法的控制性质是很重要的。本文考虑了采用单元位置码合成基于微程序r自动机的控制单元的选择,其特点是在移位寄存器上构造其存储部分。等距作为单位位置码的属性,当码字中有两个相邻的个位数而不是一个个位数时,您可以识别错误情况。这种情况是在控制装置的操作中出现«比赛信号»类型错误的标志。本文提出了两种节点的功能方案:包含(N-1)个AND元素和一个多输入OR元素的错误检测节点和包含(N-1)个不等式元素的纠错节点,其中N-为移位寄存器的位位数。它展示了如何将这些节点构建到微程序r自动机中。同时,错误检测节点输出处的错误信号的出现用于纠正移位寄存器输出处的代码组合中的错误。因此,考虑到单元位置码的相邻码组合的表示特殊性,冗余和等距等属性允许基于微程序r自动机的控制装置在操作中消除故障。
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PROPERTIES OF UNIT ENCODING OF INFORMATION IN THE CONTEXT OF FUNCTIONAL CONTROL
particularly acute solution to the problem of functional control exists to ensure immunity not only during the transmission of data arrays, but also during the activation of control devices as part of on-board systems of mobile vehicles. So, in control devices, firstly, it is necessary to catch the moment of the occurrence of the so-called «race signals» that can cause it to fail, and secondly, to correct this erroneous situation in real time to ensure the efficient operation of the entire system. In this sense, it is important to analyze the properties of control in those methods of information coding used in the process of abstract synthesis of control devices of a specific type. The article considers the option of using a unit positional code for the synthesis of a control unit based on a microprogram R-automaton, the feature of which is the construction of its memory part on a shift register. Equidistance as a property of a unit positional code allows you to identify an erroneous situation, when instead of one single digit, there are two neighboring single digits in the code word. Such a situation is a sign of an error of the «race signals» type in the operation of the control device. The article proposes functional schemes of two nodes: an error detection node containing (N-1) AND elements and a multi-input OR element, and an error correction node containing (N-1) INEQUALITY elements, where N – is the bit number of the shift register. It is shown how these nodes are built into the microprogram R-automaton. At the same time, the appearance of the Error signal at the output of the error detection node is used to correct the error in the code combination at the outputs of the shift register. Therefore, such properties of a unit positional code as redundancy and equidistance allow to eliminate a failure in the operation of the control device based on the microprogram R-automaton, taking into account the representation specificity of neighboring code combinations of this code.
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