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对令牌传递网络按优先级传输消息的机制进行了分析，提出了一种新的令牌旋转定时器初值的计算方法，该方法使网络消息依最大允许的延迟时间从小到大排序，并在一定网络负载下保证所有消息传输的实时性．本算法得出的结果与国外较成熟的工程实例相比有相当的精度，证明本文的分析和算法是合理有效的．
This paper analyzes the mechanism of token passing network sending messages by priority and proposes a new method of calculating the initial value of token rotation timer. This method sorts the network messages according to the maximum allowable delay time and Under certain network load to ensure the real-time transmission of all messages. The result obtained by this algorithm is quite accurate compared with the more mature engineering examples in foreign countries, which proves that the analysis and the algorithm in this paper are reasonable and effective.