控制机构

Therefore recommended that a land bank financial institutions lending institutions to adopt the following evaluation criteria: First, a land bank institutions assess where the city governments in strengthening macroeconomic regulation and control of land and the establishment of a land reserve system the situation.

因此，建议土地银行金融机构贷款机构采取下列评价标准：首先，土地储备机构评估的城市政府在加强宏观调控和控制土地和建立土地储备制度的情况。

The paper takes the steam turbine valve actutors and control systems as the object of study, and the fast valving of regulating valves in case of electrified wire netting failure plays an important role. The disadvantages of electro-hydraulic control systems for steam turbine available are discussed, and the principle of the new system and its design method are presented, experimental study and theoretical analysis results concerning the steam turbine electro-hydraulic control system based on the new combination principle are reported in this paper.

本文把汽轮机蒸汽阀门电液执行机构及控制系统作为主要的研究对象，尤其是针对于电网故障时，调节汽门快关控制问题进行了深入的研究，指出现有汽轮机电液控制系统存在的问题，在继承和总结前人研究的基础上，提出了汽轮机电液控制系统组成原理的新思想与系统设计的新方法，对基于这种新原理的汽轮机电液控制系统进行了系统的理论分析与试验研究。

Two cylinders drive the tipping unit, loading the bars; one asynchronous motor drives chain motion mechanism, implementing the feed and back off movement of bars; bar lifting movement in the process of chamfering and blanking movement after machining are carried out by another two cylinders; one asynchronous motor rotates the bar and one cylinder swings the wheel head when grinding; the feeding of the wheel head is accomp...

它通过控制两套汽缸驱动翻爪完成上料，一台异步电动机驱动链条式多轮运动机构完成磨削前的进料和磨削后的退料，两套汽缸完成磨削倒角加工时的预料和加工完成后的落料，一台异步电机在磨削加工时驱动棒料旋转，一个汽缸驱动磨头在加工时摆动，一台步进电机驱动磨头实现磨削进给，两套汽缸驱动翻爪完成下料，而磨头是用一台异步电机驱动砂轮旋转的机构，并给出了控制系统原理图及程序流程图，解决了控制器输入点数相对不足的技术问题。

Recorded high empty homework organization parts of upper arm liquids to press the design process of the urn in detail in the text, Chien designed slightly the arm liquid press the flexible liquid of the urn and the jack mechanism part to press an urn.

起重部分主要是控制伸缩臂伸缩运动的液压缸，以及控制起重钢丝绳收进放出的液压马达。本文着重高空作业机构的变幅液压缸和回转液压马达设计，简略起重机构。

For Variable Valve Lift system, classical PID control arithmetic was adopted as the main control strategy.

针对可变升程机构，采用了经典的PID控制方法；针对可变相位机构，提出了一种自学习型的控制方法。

According to the mechanical configuration of the rover, operation pattern of the wheel, and principle of speed matching of wheels, we present a control algorithm which can fit various uneven terrains and merge it into the whole locomotion control system.

根据八轮扭杆摇杆摇臂月球探测车的机构特点，结合轮子操作模式，利用月球车机构特征和速度匹配原理，提出一种具有良好地形适应能力运动控制算法，把它融合到了整个运动控制系统当中，提高了月球车在崎岖地形中的运动性能。

First of all, the scheme of attitude stable control system is put forward, then attitude sensors, attitude determination arithmetic and implement devices are introduced. Lastly, reaction wheel system is studied and simulated.

首先给出了姿态稳定控制系统的总体方案；然后具体介绍了本系统所采用的姿态敏感器、姿态确定算法和执行机构；最后对以反作用飞轮为执行机构的姿态主动稳定系统进行了研究，并结合前面设计的控制律进行了仿真。

Firstly, based on the sliding mode control and backstepping technique, a new attitude tracking controller is derived to control the attitude motion of spacecraft, the stability of the system is analyzed via Lyapunov method and the reaction wheel dynamics is also considered from the real applications point of view. The whole design process is divided into two steps: the first step is to use sliding control technique to design suppositional adaptive variable structure controller; and the second step is to design attitude tracking controller based on SMC and backstepping technique. Numerical simulations are performed to show that both tracking maneuver and vibration suppression can be accomplished effectively.

首先，采用自适应后步法结合主动振动控制技术设计了姿态跟踪鲁棒控制器，基于Lyapunov方法分析了系统的渐近稳定性；在此基础上，显性地考虑了执行机构动态特性问题，将整个设计过程分为两个步骤：第一步采用滑模控制技术设计了变结构虚拟控制器，给出自适应控制律的设计方法；第二步，将后步法与滑模控制技术相结合，设计了姿态跟踪鲁棒控制器，给出飞轮电压的输入算法及稳定性分析；最后，将提出的控制方法应用于挠性航天器的姿态跟踪控制，通过数值仿真对所提方法的可行性与有效性进行分析和验证。

The system uses PID controller and fuzzy controller to design automatic control loops, a study of fuzzy three-element feed-water control system for a CFB municipal waste incinerator is introduced. The incinerator is faced with problems such as large-scale fluctuation of furnace heat load and low regulation resolution of main control feed-water valve. The fuzzy logic control system is applied to modulate PI control parameters according to steam drum water level to fit fluctuated heat load, the inner and outer control loops are realized in an asynchronous way to effectively decrease regulation time and improve regulation precision.

针对垃圾炉炉膛负荷波动较大，同时给水调节阀门执行机构的调节精度较低的现状，在传统三冲量串级汽包水位控制方式的基础上，采用模糊控制策略对内、外串级回路的PI控制参数进行分区域调整，强调了PI参数在被控参量处于不同范围时的分离作用，同时内、外控制回路采用异步控制方式，浙江大学硕士学位论文从而有效地减小了被控参量的调节时间，提高调节精度，使水位波动控制在△为士12~范围内。

Lid landing gear box body is formed with the motor gearbox. When the furnace cover needs opening , simply press the button in the control box then the furnace cover will descend at a uniform speed .For the sake of safety ,two movements institutions tops trip switch are mounted in the carburizing EAF .When the furnace cover is ascending , the lower movements institutions tops trip switch will automatically cut off the seepage carbon EAF control cabinet main circuit power supply, forcing the heating elements stop working since the power is cut off, The upper switch is used to restrict the height of the movements axis ,it can prevent the movements pumped up too high to cause theelevating screw abscisicing from the gear box.

炉盖升降机构由电机齿轮箱组成，当需要开启炉盖时，只需按下控制箱上的按组，炉盖即以均速上升下降，为了安全起见，在渗碳电炉升降机构上装设有两个行程开关，当炉盖上升时，下边的行程开关自动切断渗碳电炉控制柜主回路电源，使加热元件断电停止工作，上边的行程开关则限制升降轴升起的高度，以防升降抽升起过高，升降丝杆脱出齿轮箱。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。