查询词典 engine control

A turbojet engine and its main fuel control system with hydro-mechanical regulator are studied. The rotational speed control system is modeled according to the analysis of the engine control program.

以某型涡喷发动机及其主燃油系统的机械液压式调节器为研究对象，在考虑其控制规律的前提下，建立了转速控制系统及其各部件的数学模型。

The authors studied the electronic control injection fuel-feed system and CDI digital ignition SCM control system implemented on the motor engine by liquefied petroleum gas and optimized electronic control parameters in engine dais experiment.

研究了液化石油气在摩托车发动机上实现电控喷射燃料供给和CDI数字点火的单片机控制系统，并在发动机台架实验中优化电控参数。

The research work of this paper is divided into five parts: The first ,according to the work characteristics of ship's auxiliary boiler, this paper is to design applied project in the automatic control system of ship's auxiliary boiler; The second, according to the work request of the cargo winch of alternating three-speed change-pole speed-adjusting, this paper is to determine adopting the method of the PLC control; The third, this paper is to design PLC application in three -phase induction motor control, to give the ladder chart, program and input and output circuit diagram; The fourth, this paper is to research the method of the ship's combined starting screen automatic control with the PLC; The fifth, this paper is to inquire the possibility of apply the PLC in ship's engine room surveillance system; According to the comprehensive analysis of above actual example of ship's auxiliary machinery automatic system with the technique of PLC; not only can use the technique of PLC to replace traditional relay-contactor control technique in ship's auxiliary machinery automatic system, but also can get the conclusion of the former is more dependable and more clever than the latter, the maintenance is more convenient, thus develop a new path for ship automation.

本文研究的工作主要包括五个部分：第一，根据船舶辅锅炉的工作特点，设计PLC在船舶辅锅炉自动控制系统中的应用方案，主要有PLC选型及输入输出点的设计，画出系统控制梯形图并分析工作原理；第二，根据交流三速变极调速起货机的工作要求，确定采用PLC控制的方法，进行控制系统的硬件设计和软件设计，并分析工作原理：第三，设计了PLC在三相异步电动机控制中的应用，给出了控制梯形图、程序及输入、输出接线图；第四，研究了用PLC实现船舶组合起动屏自动控制的方法，进行了系统的电源设计和软件设计，给出系统工作流程图；第五，探讨了船舶机舱监视系统应用PLC的可行性，将继电器报警线路改为用PLC控制报警，给出系统硬件图和软件梯形图，并分析了PLC机的选型、抗干扰和应用PLC的经济效益和社会效益等问题。综合以上船舶辅助机械自动控制系统采用PLC技术的实例分析，可以得出船舶辅助机械自动控制系统不但可以使用PLC技术取代传统的继电器接触器控制技术，而且前者比后者更可靠、更小巧，维护保养更方便的结论，从而为船舶自动化开辟了一条新的路径。无忧毕业设计网 www.5ubs.cn

More than ten years ago,"the negative day" the numerical control line cutting engine bed first applies and the actual production, starts the control bench is uses the transistor separative element assembly to become, after but uses the integrated circuit, now to is using the direction which the microcomputer controls to develop, Therefore this definition design "the electrical fire colored thread cutter automatic control" is by 8031 shrapnel machine took the control core, step-by-steps the electrical machinery achievement to actuate the electrical machinery, the diffraction grating a closed-loop control system which constitutes as the position examination part.

十多年前，&负旦型&数控线切割机床首先应用于实际生产，最早控制台是由晶体管分离元件组装而成，逐渐采用集成电路，现在正向采用微型计算机控制的方向发展，因此本论文设计的&电火花线切割机的电气控制系统&是以89C55单片机作为控制核心，步进电机作为驱动电机，光栅作为位移检测元件而构成的一个闭环控制系统。

Intelligent control technology of large-scale equipments in comprehensive mechanized coal mining face (including the electric explosion-proof technique, control circuit design of essence safety type and double-engine double-speed dragging heavy load control technique of scraper conveyer); no exceeding limit gas safety and high efficiency emission technique (including air flow control strategy, control method, and etc.); failure protection technique for safe power supply of mine power grid (including two-grade selective electric leakage protection and phase sensitive protection technique, etc.).

关键技术分别为多局部通风机故障诊断和冗余控制技术（包括掘进工作面供电系统多源信息融合、故障测寻、故障诊断、多局部通风机三重冗余控制方法和控制策略等）；综采工作面大型设备的智能控制技术（包括电气防爆技术、本质安全型控制电路设计、刮板输送机双机双速拖动重载控制技术等）；瓦斯无超限安全高效排放技术（包括风量控制策略、控制方法等）；矿井电网安全供电的故障保护技术（包括两级选择性漏电保护和相敏保护技术等）。

In the last chapter,we study the control problems of the distributedparameter system governed by a class of higher order pseudohyperbolicequation related to the symmetric regularized long wave equation.we havediscussed the controllability and optimal control problems.we have obtainedcompatibility condition of the constraint when the state is controllable,therepresentation of the optimal control for both the time optimal control problemand the optimal control problem of minimum energy type,and the equationsatisfied by the minimum time.we have shown that the optimal control belongsto the boundary of the admissible control set.

在第六章中，我们研究了与对称正则长波方程相关的一类高阶拟双曲型方程支配的分布参数系统的控制问题。讨论了系统的状态能控性问题和最优控制问题，给出了状态能控时的约束相容性条件，给出了最速控制问题、最小能量型最优控制问题的最优控制表达式和最速时间所满足的方程式，证明了最优控制属于控制集合的边界。

The paper, first of all, particularly expounded the new characteristics of the control within the accountants of the enterprises on the accounting computerization basis-control object dualization, control key points singularity, control form procedure, control content data, control range magnifying, and control technique modernization; then put forward the new methods of increasing the enterprises.

具体地阐述了在会计电算化条件下，企业会计内部控制的新特点———控制对象二元化、控制重点单一化、控制形式程序化、控制内容数据化、控制范围扩大化、控制技术现代化；其次提出了企业会计内部控制应增加的新方法，并作了相关的建议。

Results: For CRF rats which made by fed with feedingstuff contains 0.75% of adenine for 4 weeks, the weight of model control group rats were lighter than that of Yi Shen Granule groups rats. The water wastage of Yi Shen Granule groups rats were less than that of model control group rats. Compared urine volume, the ejectable quantity of Na, K, Cl and proteinuria in 12 hours , the data of Yi Shen Granule groups rats were less than that of model control rats. The specific gravity of Yi Shen Granule groups rats was higher than that of model control rats. The numerical value of RBC, HGB, HCT, MCV, MCH in model control group was lower than that in Yi Shen Granule groups. The content of BUN and Cre in serum of model control groups rats were higher than that of Yi Shen Granule groups. The results of excretion test of phenolsulfonphthalein showed that the RPF of Yi Shen Granule groups rats was larger than that of model control group rats.

结果： 益肾颗粒可以使0.75%腺嘌呤饲喂法致大鼠慢性肾衰模型动物体重增长加快；给药后观察，给药组动物饮水量较少，12小时尿量、12小时钠、氯、尿蛋白排泄总量均显著低于模型组动物，尿液比重值较大；模型组动物的RBC、HGB、HCT、MCV、MCH等指标的数值较给药组动物的数值小；给药组动物血清中BUN和Cre的含量较低；给药组动物酚红排泄率均高于模型组动物；给药30天，处死各组动物，尸解观察，模型对照组动物肾脏呈灰白色，各给药组动物肾脏表面均出现不同程度的红、白相兼的颗粒状纹理，各组动物肾脏均肿大，切面可见不同程度的腺嘌呤结晶沉积。

The aerodynamics characteristic of the innovative control surfaces which are implemented on the flying wing aircraft with large aspect ratio were introduced, and elevon and split rudder were involved. And the control effects on three axis were analyzed basing on computetional fluid dynamics method. The concept of control volume was imported to introduce parameters-based method of control surfaces design. The control effect requirements of the control surfaces were also evaluated. The original design of certain aircraft's control surfaces was modified.

介绍了在该新布局飞机上采用的升降副翼和开裂式方向舵等新型操纵面的气动特点，并在计算空气动力学的基础上分析了其三轴控制效率，引进舵容量的概念提出了操纵面的参数化设计方法，基于飞机的可控性对各新型操纵面的操纵效率需求进行了评估，最终对某型飞机的操纵面初步设计进行了修正。

In the design of automatic control system for isomerization unit from heptane tower of PX devices, single-loop control is used in the control programme. There is a total of 11 circuit , of which is 8 single-loop control system and 3 cascade control system. It has done the choice and relevant calculation on the controller, control valves and measurement devices used in the control system. There is a total of eight chapters in this design.

在对PX装置异构化单元脱庚烷塔自动控制系统进行设计时，控制方案基本采用单回路控制，总共有11个设计回路，其中单回路控制系统8个，串级控制系统3个，并对控制系统所要用到的控制器，控制阀和测量元件等进行了选择且进行了相关的计算。

He has to relate with three women in the movie, and yet remain implicitly faithful to the unseen Lucinda.

让克劳德布里亚里成功地饰演试验了一个难度很大的角色：和三个女人打交道，但还要底下对观众未曾谋面的卢馨达保持忠诚。

The experiment was conducted to study effects of inulin on the growth performance, indices of immune organs and serum immunoglobulin of laying chicklings as well as the performance of inulin which replaced the antibiotics in diets by adding 0.2%, 0.4% and 0.8% of inulin, respectively.

试验旨在通过在蛋用雏鸡日粮中添加0.2%、0.4%和0.8%的菊粉，研究菊粉对蛋雏鸡生长性能、免疫器官指数和血清免疫球蛋白的影响，以及菊粉替代抗生素对蛋雏鸡的应用效果。