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The keystone of this research is to carry out the construction quality control with Shewhart control chart and some statistical method effectively used in foreign countries. On the other hand, we collected the construction data of Jiangsu province, analyzed with these methods, and found out some problems in highway construction.

本文研究的重点是采用各种控制图方法实现对施工过程的质量控制,并借鉴国外在施工质量控制及验收中采用的某些统计控制方法的成功经验,结合江苏省高速公路建设中近两年积累的施工数据,进行了有效的分析,分析过程中发现了目前该省高速公路施工中存在的一些问题。

Using MK- 801 double board computer and digit to anolog interface circuit as hardwar, de-sign and a set of temperature autocortrol system , sassociating with DWK- 702 instrument of tempera-ture fine control, applying to production technique of T1 -superrconductors and making this automa-tize.

采用MK-801双板计算机及其数模接口电路为硬件,设计并制造一套温度自动控制系统,联合DWK-702精密温度控制装置,对T1系超导材料的烧制过程进行自动控制,使这一过程自动化、程序化、并提高了温度控制精度。

College of Guandong Business, Guanzhou 510320, China)Abstract: Since large-scale vertical quench furnace is voluminous, whose working condition is a typically complex process with distributed parameter, nonlinear, multi-inputs/multi-outputs, close coupled variables, etc, dynamically decoupling control algorithm of temperature distributed parameter system in the furnace was presented, by which the whole system was decoupled to several subsystems and the implementation of controller was simplified. With finite difference approximation, the space and time step size was solved to ensure the convergency of finite difference approximation. After decoupling, the subsystems were controlled with self-learning PID control algorithm. The results show that the temperature control precision and homogeneity are improved; the overshoot and process in temperature rising period are reduced simultaneity.

摘 要:针对大型立式淬火炉体积庞大,工况复杂,炉内温度分布呈本征非均匀性,具有多输入/多输出、非线性、强耦合等特性,难以实现炉内温度高精度高均匀性控制目标等问题,提出一种温度分布参数系统动态解耦控制算法,其原理是:采用有限维逼近方法将对象解耦为多个独立的子系统,简化控制器的实现过程;通过分析有限维逼近方法的收敛性,获得保证收敛性的空间和时间步长应满足的条件;解耦后的子系统采用自学习PID控制算法,实现炉内温度高精度和高均匀性控制以及升温过程的快速性和小超调。

How to balance the fact that technology immanently requires an infinite improvement of product quality and the actually realized economic benefit and how to properly control product quality from an economic view.

本文的研究是基于自己所承担的、有关企业质量管理活动中工序质量控制的两项科研课题:"机加工过程中的产品质量控制与诊断系统设计"及"工序质量控制过程的质量预警及控制研究"。

This article mainly introduced completes with programmable software to the saccharification pot , the dextrinize pot, Boils the pot, the lye pot, the thermal flask, the ice watering can and the disc heat interchanger carries on the temperature xamination control, carries on the examination to the filter-tank temperature To the balance tank fluid position examination control, the thermal flask and the ice watering can fluid position carries on the examination; To wheat juice current capacity examination control, The steam current capacity carries on the measurement; To the saccharification pot, the dextrinize pot, boil the pot clamp cover steam pressure as well as the steam distributor pressure carry on the examination; To various unclear wines liquid pump, Delivers Mai Zhibeng, the mixer and various pipe-line valve according to each operating time order realization automatic control.

本课题综述了啤酒糖化过程自动化过程的软件设计,本文主要介绍了用VB语言来完成对糖化锅、糊化锅、煮沸锅、碱液罐、热水罐、冰水罐及板式换热器进行温度检测控制,对过滤槽温度进行检测;对平衡罐液位检测控制、热水罐和冰水罐液位进行检测;对麦汁流量检测控制,蒸汽流量进行计量;对糖化锅、糊化锅、煮沸锅夹套蒸汽压力以及蒸汽分配器压力进行检测;对各醪液泵、送麦汁泵、搅拌器及各管道阀门按各工作时间顺序实现自动控制。

Software to design. This article mainly introduced completes with programmable software to the saccharification pot , the dextrinize pot, Boils the pot, the lye pot, the thermal flask, the ice watering can and the disc heat interchanger carries on the temperature xamination control, carries on the examination to the filter-tank temperature To the balance tank fluid position examination control, the thermal flask and the ice watering can fluid position carries on the examination; To wheat juice 环境/给排水论文 current capacity examination control, The steam current capacity carries on the measurement; To the saccharification pot, the dextrinize pot, boil the pot clamp co 土建水利论文 ver steam pressure as well as the steam distributor pressure carry on the examination; To various unclear wines liquid pump, Delivers Mai Zhibeng, the mixer and various pipe-line valve according to each operating time order realization automatic control.

本课题综述了啤酒糖化过程自动化过程的软件设计,本文主要介绍了用VB语言来完成对糖化锅、糊化锅、工科论文煮沸锅、碱液罐、热水罐、冰水罐及板式换热器进行温度检测控制,对过滤槽温度进行检测;对平衡罐液位检测控制、热水罐和冰水罐液位进行检测;对麦汁流量检测控制,蒸汽流量进行计量;对糖化锅、糊化锅、煮沸锅夹套蒸汽机械设计压力以及蒸汽分配器压力进行检测;对各醪液泵、送麦汁泵、搅拌器及各管道阀门按各工作时间顺序实现自动控制。

This thesis dedicated to research the investment control of BT project, researched the risk in the program construction, the compose portion and the factors effecting the investment. The research includes the conception and the character of the BT project; the actualize process and the questions should be pay attention to; the conditions of BT contract and the sector of the compose poison of the contract price. In this part researched the conception of the BT purchase price and concluded that the relation between the purchase price and the investment. Then studied the risk factors that effect the investment according to the character of the project and then brought forward several advices of the contract item about how to share the risk. Studied compose sector and it's calculatingly methods of the construction cost which is the main part of the investment, then studied how to control the cost during the construct process and analyzed project variations as well as how control that. In the end, researched the capital cost of BT program, the main content include the concept of the capital cost, the calculatingly methods using the engineering economic method, the method writer suggest in the thesis according to the project practice, how to control the capital cost, mainly through setting up an account and inspecting it, and regulating the program financing rate in reason.

本论文的研究重点即BT项目的投资控制,围绕该问题,本论文的主要研究内容有,从BT模式和BT项目的基本分析开始,研究了BT模式的基本概念、BT项目的运作过程、基本特征;研究了BT项目的合同条件和合同价款,该部分分析了BT项目的合同结构、BT项目的承发包工作范围、BT项目的回购价款组成和确定;根据项目建设特征分析了影响BT项目投资的风险因素,并且提出了在对风险进行分配和分担类合同条款制定时建议;建设工程费用是构成BT投资的主体费用,本文对其各组成部分的基本构成、计算方式进行了分析,研究了实施过程中管理控制和工程变更及变更控制的问题;文章的最后对构成BT项目投资的资金成本进行了探讨,分析了资金成本的概念和形成,运用工程经济学的基本理论分析了资金成本各部分的基本计算方式,依据现有的工程实践情况提出了本文建议的计算方式,最后分析了如何对资金成本进行控制――主要通过设立资金账户对其进行监管以及对项目融资的利率进行合理规定。

In organization level, design activity fragmentizing strategy and negotiation mechanism are applied to schedule the collaborative design process. To present the uncertainty in design, resource sharing, message passing and real-timed interaction between programs, the integrated control Petri net is adopted to model and simulate the collaborative level. Control level is realized by workflow model, which control the tasks in collaborative design by means of user management, access control and task control rules.

本文通过细化设计活动策略和协商机制,实现了组织级的协同设计过程规划;针对常用的有色Petri网方法不能解决实际系统运行中出现的不确定性、资源共享、信息传递和外部程序的实时交互等问题,通过对有色Petri网的扩充,提出了采用集控Petri网方法,用于协调级的建模和仿真;采用工作流模型为控制级实现,从用户管理、访问控制模型、协同任务控制规则三个方面实现协同设计过程的任务流控制。

Aiming at the characteristics of car retarder control system and its performance requirement, a fuzzy self tuning PD controller for retarder control is designed. It takes speed error and its change as fuzzy variables to determine the fuzzy control rules. Using the determined rules, the parameters of PD controller is adjusted on-line, which can be adapted well to required speed and the process parameter variation of retarder feedback control.

针对车辆减速器控制系统的特点和性能要求,设计减速器模糊在线自校正控制器,以调速过程中速度误差及其变化为输入语言变量,建立模糊控制规则;根据模糊控制规则在线调整PD控制器的参数,使控制器能较好地适应减速器闭环控制定速设定及过程参数时变。

Based on solidification theory and analysis of process of Aluminum alloy Direct Chill casting, the control system of DC casting for big size billet has been designed. For improving the quality of billet-optimized control strategy of cooling water must be determined to eliminate the instability of the traditional feedforward control, PID control and cascade control have been introduced.

通过对铝合金DC铸造工艺过程的分析,建立了铝合金DC铸造的控制系统;在分析DC铸造铸锭结晶凝固原理的基础上,完成了冷却水量自动控制的系统设计,并进行了控制策略的选择;基于对铝合金直接水冷铸造,DC凝固原理和工艺过程的分析,本文提出了大尺寸铝合金圆锭铸造的控制系统设计方案。

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推荐网络例句

I didn't watch TV last night, because it .

昨晚我没有看电视,因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来,在北京的很多小区里,电梯液晶电视被撤了下来。

I'm running my simile to an extreme.

我比喻得过头了。