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颤振     
相关语句
  flutter
     Study on Characteristics of Nonlinear Flutter and Buffet of Wings of Aircraft
     机翼非线性颤振和抖振特性研究
短句来源
     Research on Aircraft Flutter Modal Parameter Identification
     飞机颤振模态参数识别方法研究
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     Active Flutter Suppression of Aircraft
     飞机的主动颤振抑制
短句来源
     Analysis and Test of the Active Flutter Suppression System of Aircraft
     飞机颤振主动抑制系统的分析与试验
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     NONLINEAR FLUTTER ANALYSIS FOR HELICOPTERROTOR BLADE
     直升机桨叶的非线性颤振分析
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  chatter
     Chatter Analysis and Control for Cutting Process
     切削颤振分析与模糊控制实验研究
短句来源
     Directionalit analysis of chatter and measures for adjustment
     切削颤振中的方向性分析及其调整措施
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     Wavelet Packet and EAR Model Based Feature Extraction and Assessment of Chatter in Milling
     基于小波包和EAR模型的铣削颤振特征提取和评价
短句来源
     The results show that the cross-section method can solve the instantaneous milling thickness effectively, and based on analyzing the dynamic characteristic simulation of milling process at different cutter path, the result is also proved that the Hilbert filling curves can restrain the regenerative chatter effectively.
     结果表明 ,提出的截法线法能有效地解决数控铣削过程瞬时名义铣削厚度的计算问题 ,同时对不同刀具路径的铣削过程动态特性仿真结果表明 ,Hilbert填充曲线刀具路径能有效地抑制铣削过程再生颤振的发生与发展 ,对提高机械零部件加工效率和加工表面质量有重要作用
短句来源
     Chatter Compensation and Simulation for the Pneumatic Cylinder with Friction
     气缸摩擦力的颤振补偿与仿真
短句来源
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  chattering
     Frequency Domain Centroid Criterion for Diagnosis of Machine Tool Chattering in Its Early Stage
     机床颤振预兆早期诊断的频率矩心判别法
短句来源
     The variable structure control ( VSC) of discrete time systems using discrete reaching law was discussed. The cause of the system's chattering were analyzed.
     针对离散时间系统 ,讨论了利用离散趋近律设计变结构控制问题 ,分析了趋近律系数造成系统颤振的原因 ,给出改进的离散趋近律 ,并利用它设计变结构控制 .
短句来源
     A Chattering Free Dynamical Variable Structure Control for Nonlinear Systems with Uncertainties
     不确定非线性系统的无颤振动态变结构控制
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     In order to reduce chattering phenomenon of variable structure control, a fuzzy variable structure control method is adopted and applied in the overload control system design of anti-ship missiles.
     为了削弱变结构控制中的颤振现象,采用了模糊变结构控制方法,并将该方法应用于反舰导弹的过载控制系统的设计中。
短句来源
     A Simplified Non-Linear Chattering Model for Cutting
     简化非线性切削颤振数学模型
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  flutters
     Experimentation research for the flutters in high speed grinding
     抑制高速磨削颤振实验研究
短句来源
     FEEDBACK CONTROL OF CUTTING-TOOL FLUTTERS IN MECHANICAL PROCESSES
     切削加工中刀具颤振的迟滞反馈控制
短句来源
     Research on the Flutters Mechanism of the Turn-milling Machining Micro-miniature Shafts
     微细轴车铣加工颤振机理研究
     The test results show that the flutters speed of the wing/remote pivot decoupler pylon/store is much higher than that of the wing/conventional pylon/store and is insensitive to the variation of the store inertia when the store pitch frequency lies in the soft region.
     试验结果表明:当外挂俯仰频率落在柔性区范围时,机翼/远铰解耦挂架/外挂的颤振速度比机翼/常规挂架/外挂的颤振速度有显著提高; 且其颤振速度对外挂惯性特性的变化不敏感.
短句来源
     Studied the enhancement the grinding surface quality by high speed grind,after high speed rubs the speed change which truncates to rub truncates the experiment,confirmed the speed change rubs truncates the performance certain degree suppression high speed to rub truncates flutters.
     系统研究高速磨削下的变速磨削试验,阐述提高高速磨削表面质量的方法,证实变速磨削能在一定程度上抑制高速磨削颤振
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  flutter
A new semiactive lever-type tuned mass damper (TMD) with an adjustable frequency is proposed to control vertical bending buffeting and torsional buffeting and flutter in the whole velocity range of bridge decks.
      
The wind excitations of the system are the buffeting and self-excited forces simulated in time domain using measured aerodynamic coefficients and flutter derivatives.
      
Flutter control effect and mechanism of central-slotting for long-span bridges
      
If the original section is inappropriate or the slot width is unsuitable, central-slotting will even deteriorate the structural flutter performance.
      
In an investigation of the flutter of turbines it is necessary to know what is the influence on the unsteady aerodynamic characteristics of a cascade of oscillating profiles of the interaction of cascades in a turbine.
      
更多          
  chatter
During chatter in metal cutting the tool vibration would cause a variation in "effective" rake angle of the cutter, generating a force variation that depends on penetration rate: a kind of process damping.
      
It is shown that there is no chatter in the hydraulic valve, which results in smoother operation of the system.
      
In addition, a novel discrete-time reaching law that can obviously reduce chatter is also put forward.
      
The resulting dynamic feedback is shown to provide chatter free control if the system is minimum phase with respect to the zero dynamics.
      
The third reason is to suggest that our linguistic minds create dream puns while we sleep, continuing the mind chatter of the previous day.
      
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  chattering
Furthermore, to eliminate the chattering resulting from the discontinuous switch controller and to guarantee system transient performance, a new adaptive fuzzy sliding mode controller was designed.
      
The simulation results indicate that the dynamical sliding-mode controller can not only track the given trajectory correctly but also reduce the chattering of sliding-mode control system considerably.
      
By modifying the sliding-mode errors in each switching period, the steady-state errors and chattering can be substantially reduced.
      
The binary disturbance observer is used to eliminate the chattering problem of a sliding mode disturbance observer.
      
The robustness is achieved, and continuous control is realized by employing the proposed observer without the chattering problem and the steady-state error.
      
更多          
  flutters
Left atrial flutters are not as common as peri-tricuspidian circuits.
      
Duodecapolar catheters (DPCs) have been widely used to diagnose isthmus block after ablation in patients with atrial flutters.
      
A cool crisp breeze flutters about my feet, sending an errant leaf on a flight towards the edge of the island.
      
Before copulation, female crouches on tree branch and flutters wings.
      
It flutters above the ground where it can get a panoramic awareness of its surroundings.
      
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