In this task , a test _ bed for engineering vehicles was developed based on virtual instrument . the whole system comprised 5 parts : the checking of running velocity , which was gotten on the test bed through the vehicles simulating real road running ; the temperature checking of the important points on the transmission system ; the temperature checking of the circling cooling water on the exit port of dynamometers ; the control of the loading power . which was given to vehicles by the power measuring machine ; the control of the total test - run time 本课题开发的基于虚拟仪器的工程机械跑合试验台,其测量和控制参数有:行驶速度检测(车辆在跑合试验台上模拟路面的行驶速度) ;传动系温度检测(试验车辆传动系主要部位多点温度) ;冷却水温度检测(测功机循环冷却水出口温度) :加载功率控制(测功机施加给车辆的载荷) ;跑合时间控制(试验车辆在试验台上加载跑合的总时间) 。
With a briefly introduction of the problems existing in the low voltage distribution system of guangzhou metro line 1 , such as indirection wiring , interference of combined piping and wiring , confused standard classification of load level , decentralization of low load power supply , inflexible control mode , etc . , the author argues that in the new design of low voltage distribution a great attention shall be paid to the above mentioned problems and a careful comparison between the old solution and the new one shall be made 摘要对广州地铁1号线车站低压配电系统现状及存在问题进行了分析,在此基础上有针对性地提出了新线低压配电系统方案设计应注意的问题和新线设计方案的建议,并对新方法与原方案进行了比较。