气动的

Presents the design of longitudinal control for ASTOVL lift-fan aircraft, a multi-variable, strong-coupling, complicated nonlinear system to make the system nonlinear offset and decouple, and the method used for linear system in designing the system to gain expectant flying qualities and the combination of aerodynamic control surfaces with thrust vectors to delay the control surfaces getting into saturation, and the minimum N-norm generalized inverse theorem of weighted generalized inverse adopted to apportion the moments commands, which make the control surfaces gain appropriate deflection and the simulation results to verify the dynamic inverse control laws designed really make the system nonlinear offset and decouple; when one command is given, only this output will response, and others do not response; when all commands are given together, the responses will be just the linear superpose of the response of each command, therefore the operation of the pilot will be simplified greatly.

摘 要： ASTOVL升力风扇飞机是多变量、强耦合、复杂的非线性系统，采用非线性动态逆理论设计控制律以实现系统的非线性对消及解耦，然后，采用线性系统的设计方法对系统进行设计，以使系统获得期望的飞行品质。同时，考虑到ASTOVL升力风扇飞机是由气动舵面和推力矢量融合作用的，为了延缓各舵面进入饱和的时间，采用加权广义逆中的极小N-范数广义逆定理分配力矩指令，从而使各舵面达到适当的偏转角。并将所设计的控制律进行了仿真，结果验证了所设计的动态逆控制律使系统实现了非线性对消和解耦，单个指令作用时，只有该项响应，其余不受影响；所有指令作用时，其结果就等于单个指令作用时的线性叠加，这样使驾驶员的操纵大大简化而易于控制，从而大大降低了飞行事故率。

Among lots of research results, the method of describing stiction of pneumatic control valve s and detecting stiction developed by Kano is simple and effective.

但是，Kano 气动控制阀静摩擦模型存在着不足，本文指出了该模型的缺陷所在，并给出了改进方案，使得模型的输入输出与物理过程完全一致；针对控制阀静摩擦的统计检测方法参数较多的特点，系统分析了影响检测结果的因素，总结了检测参数的指导原则。

At the same time, the gas flow acting on the keyhole is simulated by finite element method. The gas flow fields of pneumatic circumferential motion and pressure distribution nephograms around and in the keyhole are obtained. Analysis shows that when plasma is blown backwards i.e., in direction towards the trailing edge of the weld pool, plasma can be eliminated better.

利用有限元法对激光焊接时保护气体在小孔内部和表面气流状况进行了数值模拟，通过对不同焊接条件下模拟形成的小孔气动扰流的气流场和压力分布云图的分析，解释了采用逆向侧吹保护气体吹除等离子体的方法，可以更有效地抑制等离子体云的产生，防止小孔塌陷，有利于维持小孔的稳定性。

Also the normal form and thediagram of the Hopf bifurcation are deduced with the normal form direct method.Secondly, the influences of the physical and aerodynamic parameter on the type of theHopf bifurcation are analyzed. Study shows that the "hard" structural non-linearitiesand the longer distance of the suspension point and the center of mass render theairfoil safer, whereas the "soft" ones render the airfoil more unsafe.

同样应用规范型直接法，研究得出系统颤振的Hopf分岔解的规范型以及分岔图；其次，研究了系统结构和气动参数对Hopf分岔类型的影响，结果表明，表明具有&硬&弹簧性质的结构及增大悬挂点与质心的距离都有助于提高安全性，而应该避免应用&软&弹簧性质的结构。

It can implement different path construction and deviation correction of the mole through applying a steering torque to the mole to change its working configuration and the orientation of the steering head slant face and make the mole advance according to the predetermined path. In this paper, Fussy Control is selected as the method of controlling the construction path of the mole and a set of detailed control strategy is established.

此外，针对气动冲击式轨迹可控穿孔机的施工特点，还专门设计了微型化和抗冲击的定位测量系统，以实现在施工过程中对穿孔机的监测，其测得的穿孔机实际运行轨迹用于和设计轨迹进行比较，作为对穿孔机施工轨迹进行控制的依据；以及由控向机构和挠性杆组成的控向系统，其作用是通过施加控向扭矩于穿孔机来改变穿孔机的工作模式及导向穿孔头斜面的朝向，从而实现不同性质轨迹施工和偏离修正，保证穿孔机尽可能按照设计轨迹进行施工。

What's more, a special locating and measuring equipment is designed according to the characteristics of the pneumatic percussive steerable mole, which is minisized and able to stand strong impact. By using it, the mole can be monitored during construction. By comparing the actual path to the predetermined path, the construction path of the mole can be controlled. The steering equipment comprises a steering tool and flexible pipes. It can implement different path construction and deviation correction of the mole through applying a steering torque to the mole to change its working configuration and the orientation of the steering head slant face and make the mole advance according to the predetermined path.

此外，针对气动冲击式轨迹可控穿孔机的施工特点，还专门设计了微型化和抗冲击的定位测量系统，以实现在施工过程中对穿孔机的监测，其测得的穿孔机实际运行轨迹用于和设计轨迹进行比较，作为对穿孔机施工轨迹进行控制的依据；以及由控向机构和挠性杆组成的控向系统，其作用是通过施加控向扭矩于穿孔机来改变穿孔机的工作模式及导向穿孔头斜面的朝向，从而实现不同性质轨迹施工和偏离修正，保证穿孔机尽可能按照设计轨迹进行施工。

Yangtze River glacier retreat has little to do with human factors Yangtze River glacier retreat has little to do with human factors Shangguan Dong-hui said that the short term, the glacier melt water to the Yangtze River has brought plenty of water, the surface, in the Northwest seems to be a good thing, but this supply led to the uneven seasonal river runoff in winter The early release of melt water, resulting in spring flood summer drought.

Yangtze River glacier retreat has little to do with human factors ；是由上海埃非凯阀门有限公司提供的阀门新闻，中文译文仅供参考(上海埃非凯阀门有限公司还生产疏水阀隔膜阀旋塞阀柱塞阀鸭嘴阀及电动调速蝶阀，气动通风蝶阀，美标波纹管闸阀，c，平行式双闸板闸阀，欢迎您的选购。)长江源冰川的退缩与人为因素关系不大上官冬辉说，短期内，冰川的融水给长江带来了充沛的水量，表面上看，对西北地区似乎是一件好事，但是，这种补给导致江河的径流量季节性不均，冬季的融水提前释放，从而造成春汛夏旱。

Its application in Maotai Distillery had realized big pot (120 t) blending the problem of unstable liquor quality by small pot (5 t blending was settled, shortened production time, brought satisfactory economic benefits to the enterprise through energy-saving, and successfully prevented the loss of flavoring substances during liquor blending. Besides, maintenance-free of the system had freed the maintenance necessary to mechanical stirring before. Tran. by YUE Yang

脉冲气动调和搅拌系统在MT酒厂的应用表明，不但可尊重该厂的原始工艺，确保成品的质量，企业还实现了大罐（120 t）勾兑，解决了小罐（5 t）勾兑批次成品质量不稳定问题；缩短生产时间，提高了企业生产效率；节约能耗，降低生产成本，给企业带来了良好的经济效益；不需要进行罐维修，解决了此前采用机械搅拌需要的维修；可解决白酒勾兑过程芳香物质的损失问题。

Is strict throughout the good quality pass, the crucial element by the CNC computer machining center processing, guaranteed completely the components the shape position common difference and the precision, select the import name brand hydraulic pressure, the pneumatic element, causes the complete machine the performance and the stability, the reliability obtains the guarantee, in addition the Yao prestige person's fine rigorous work, the specialized outstanding post-sale service troop, has won user community's trust, the product continuously best-selling domestic and foreign.

始终严格把好质量关，关键零件全部由CNC 电脑加工中心加工，确保零件的形位公差和精度，选用进口名牌液压、气动元件，使整机的性能和稳定性、可靠性得到保证，加上耀威人的精细严谨的工作态度，专业优秀的售后服务队伍，赢得了广大用户的信任，产品一直畅销国内外。

The computer simulation of ceramic thermal barrier coating on turbine engine blades during loading process has been conducted.

本文通过在计算机中建立航空发动机叶片的工作环境，进而模拟在飞行状态下叶片表面涂敷的陶瓷热障涂层的受力行为，获得了陶瓷涂层在热气动载荷作用下应力场分布，并得出应力场分布与涂层结构和叶片几何形状及与承受的载荷之间的关系，提出了进一步提高陶瓷热障涂层的使用寿命的途径。

He and Nina moved to California and lived at 2005 Ivar Street, Apt.

他和Nina搬到加州，并在2005年伊瓦尔街，公寓生活。

Droperidol （ potently inhibits transfected HERGchannels and this is the probable mechanism for QT prolongation.

氟哌利多有效地抑制了转染的 HERG 钾通道，可能是 QT 间期延长的机制。