The new generation of Siemens 6RA70 series d. c. speed adjustment device is selected as the key controller of the system, which satisfies the requirements of controlling carriage speed well.
该系统选用西门子新一代的6RA70系列直流调速装置作为核心控制器，较好地实现了船模拖车速度的控制要求。
The data collection and adjustable frequency solution: using state machine to control A/D conversion controller, the system could get higher speed and higher reliability;
数据采集及可变频率的解决方案：采用状态机实施对A/D转换器的控制，速度高，可靠性高；
The system is a experiment , so use more micro-sensors about asynchronous motor, Programmable Logic Controller PLC, D/A transducer and variable frequency and speed adjusting.
该系统是一个实验型的设计，所以主要运用的元件 是异步电动机、可编程控制器 PLC、D/A 转换器和变频器等微型 元件。
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