In this paper , from the viewpoint of basic automatic control system , a cooling tower supervisory controller is designed and tested by applying it on the digital simulator to real time control the tower airflow and tower fan sequencing in central air - conditioning 摘要从集中空调冷却水侧基本自动控制系统的局部角度出发，设计了冷却塔风扇上位机控制器，对风扇风量和运行台数进行实时控制，并通过仿真试验分析了其对系统控制稳定性和系统能耗的影响。
In addition , in order to make the pumps realize constant injection pressure , the expert tuning pid vfvs constant injection pressure control sub - system for pumps is established and relevant software module is developed . the sub - system can control automatically the quantity and rotate speed of the pumps running to realize the pumps optimum run according to the seawater injection plan of the oil field , which realizes constant injection pressure , energy saving and decreases the consumption to a large degree 此外，为平台注水泵机组的优化运行构建了基于专家整定pid控制的变频调速恒压注水控制子系统，并开发了相应的软件模块，完全省却了pid控制器的硬件设备，使得注水泵机组可以根据油田注水量的配注方案优化运行，自动控制注水泵的转速和运转台数，既能实现平稳增压注水，又能在很大程度上节能降耗。
Mainly , the type of pump in the large - scale irrigation and drainage pumping station in our country is adjustable - blade propeller pump . we can regulate the pump ' s blade mounting angle following the variation of water level at the inlet and outlet of the station in order to control the discharge of pump , we also determine the number of running machines with machine ' s optimal combination . so we can reduce its energy consumption , and make it optimally and economically run 我国大部分大型电力排灌站所安装的泵都为可调节叶片的轴流泵，这一有利条件使我们可以根据排灌站进、出口水位的变化来调节水泵的叶片角度，控制水泵的流量，并合理的确定开机台数，通过机组间的优化组合，使整个泵站的能耗最少，达到整体最优、经济运行的目的。
From the qualitative point of view , the writer issued the problems and methods that should be noticed in the choice of equipment and the configuration in quantity . in quantitative study , the main task was to obtain the reasonable quantity of devices . two different quantitative methods , comprehensive cost model in the stage of port planning and a formula that could present the mathematical relation of possessed equipment amount , the efficiency of equipment in good condition and amount of equipment on duty , were employed in this research stage 在这一阶段，作者采用了两种不同的定量研究方法来进行讨论：在码头的投资规划期，采用了综合成本模型来确定港机的合理投资规模；在营运期，通过拟合模型中的参数，建立设备完好率、港机拥有量和设备最佳出勤台数三者之间的函数关系式，来计算港机的最佳拥有量。
Unfortunately , there was still light pollution although technology was improved many times . to ensure environment protection , wanbao company decided to remove all the old product lines and reinstall the product lines of oxide electrolysis . the total set is 30 , and equipped with two 25kg vacuum induce stoves , the yield is 1400 mt per year . the main production are low - zinc low - magnesium lanthanum metal , low - zinc low - magnesium mischmetall , neodymium metal , didymium metal , yttrium metal , dysprosium metal etc 多年来，万宝公司一直从事氯化物电解生产，虽经多次环保治理，仍有一定污染，为确保绿色环保生产，公司决定将原有生产线拆除，全部改装成氧化物电解生产，总台数为30台，年产量为1400吨，同时配备两台25kg真空感应炉。主要生产低锌低镁金属镧低锌低镁混合稀土金属金属钕镨钕金属
Using minimum water supply cost as objective function , the secondary series of optimal dispatch model was set up . the optimal combination of fixed - speed pump and the optimal range of rate and flow in varied - speed pump station were elaborated . applying these methods for water supply system in yuci city , the result show it can save energy , which illustrate this optimal dispatch model was successful 以供水费用最小为目标函数，建立了给水系统的一级优化调度和二级优化调度的宏观模型；详细阐述了泵站中只有恒速泵时恒速泵的最优组合方法，含有调速泵时，给出了确定调速泵最佳台数、最佳调速范围和调流范围的计算方法。
The first part . task analyse of handling technology design . is explain the place , basic establishments entironment of yangshan port and the conditions basic tenet and technical parameter of design . the second part , project study out . is discuss the design contents the choice of the leading and the assistant engine , the form of the handling mechanisation system , project study out . the third part , size design , is count the berth pass capacity , the amount of handling engine , the area and capacity of yard , road and gate , the worker amount . the fourth part . technology and economy argumentation , commendable project confirm , is confirm the commendable project by technology and economy argumentation . in the end , considering the technology , economy and use . discourse commend the project of rubber - tyred gantry crane . at present . centre government is studying yangshan project , but in handling technology part of container terminal , the design is simply . so this discourse has important consult value . and has important value of economy and community too 第一部分的装卸工艺设计任务分析主要就洋山港区的地理位置、基础设施、自然环境，设计前提条件，设计原则以及设计主要技术参数进行说明；第二部分的装卸工艺方案拟定主要就工艺设计的主要内容，主要机械及辅助机械选择，装卸机械化系统组成以及工艺设计方案拟定进行论述；第三部分的装卸工艺方案规模设计主要就泊位通过能力，装卸机械台数，堆场面积及堆存能力，道路及大门，司机及工人人数，工艺流程进行计算分析；第四部分的技术经济论证及推荐方案确定主要就技术、经济指标进行对比论证，并在此基础上确定推荐方案。
When the water head and the flow are given , we can regulate the pump ' s blade mounting angle to control the discharge of pump in this pumping station that contains only one type of pump . we also can determine the number of running machines with machine ' s optimal combination . so we can reduce its energy consumption , and make it run optimally and economically 当水头和抽水流量给定时，这类泵型单一的泵站，可以通过调节水泵的叶片角度，控制水泵的流量，并合理确定开机台数，通过机组间的优化组合，使整个泵站的能耗最少，达到整体最优、经济运行的目的。
