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本文提供的新工具不仅简化了仿真结果的分析与显示,而且简化了模型的编制和仿真。SLAM 语言可使建模者以任意组合方式使用网络、离散事件和连续模型来描述系统的各部分。SDL 数据库管理系统可使建模者收集仿真结果,又可在仿真运行的同时分析和显示仿真结果。我们将 SLAM 和 SDL 用于航天飞机试验软件包的分析。试验软件包的 SLAM模型显示网络、离散事件和连续模型组合的效用。SDL 数据库有如下优点:可存贮模型运行结果;可用计算机比较可供选择的方案;在仿真结果取得后,可确定和计算性能参数量;可把数据库中的模型结果制成报告和图形。我们的分析结果也是有意义的。试验软件包只能用有限量的航天飞机资源。因此,我们用仿真来确定每项试验和微处理器所需的内存量和每项试验数据传输延迟的原因。
The new tool provided in this paper not only simplifies the analysis and display of simulation results, but also simplifies the preparation and simulation of the model. The SLAM language allows modelers to use the network, discrete events, and continuous models to describe parts of the system in any combination. SDL database management system allows modelers to collect simulation results, but also simulate the operation of the analysis and display simulation results. We use SLAM and SDL for the analysis of shuttle test packages. The SLAM model of the experimental package shows the utility of network, discrete event and continuous model combination. The SDL database has the following advantages: It can store the results of the model operation; compare available alternatives with the computer; determine and calculate the performance parameters after the simulation result is obtained; and report and graph the model results in the database. The result of our analysis is also meaningful. The experimental package can only use a limited amount of space shuttle resources. Therefore, we used simulation to determine the amount of memory required for each experiment and microprocessor and the reason for the delay in the transmission of each experimental data.