Because the workpiece is in dynamic balance, the resultant moment acting on it should be zero. Introducing the moment from lapping tool and press head a moving differential equation is built. In this equation only workpiece rotating speed is unknown. It means that workpiece rotating speed can be got by this equation. Since there is a transcendental function in integral function of the equation an analytic result can not be got, only digital result can be got by a computer. Thus a change rule of workpiece rotating speed with lapping parameters is known, e.g. the radius of press disc ball socket, radius of press head ball, the distance between the workpiece rotating axis and lapping tool rotating axis, workpiece radius, modulus of elasticity of the press head and press disc, friction coefficients between the lapping tool and workpiece, and between the head and disc, pressure between the lapping tool and workpiece and pressure between the press head and press disc.

因工件處于動(dòng)態(tài)平衡狀態(tài)成人h3d在线播放，其上所受到的來(lái)自于磨具和壓頭的力矩應(yīng)相等国产国语对白丝袜美女A片，將二力矩表達(dá)式聯(lián)立黑人久久，建立工件運(yùn)動(dòng)微分方程久久国产精品一区，該方程中只有工件的旋轉(zhuǎn)角速度是未知量97亚洲熟妇自偷自拍另类图片，因此可以求出工件旋轉(zhuǎn)角速度91福利精品自拍视频导航，但該方程積分式中含有超越函數(shù)，得不出解析解婷婷综合性，只能通過(guò)計(jì)算機(jī)求出數(shù)值解怕怕怕免费视频，得出工件旋轉(zhuǎn)角速度隨各研磨參數(shù)的變化規(guī)律，如壓蓋球座半徑国产精品全网在线观看、壓頭的球頭半徑18禁黄网站禁片流畅观看、工件回轉(zhuǎn)中心相對(duì)磨具回轉(zhuǎn)中心的偏心距、工件半徑国产综合第二页、壓頭和壓蓋材料的彈性模量亚洲最大网站在线、磨具與工件間的摩擦系數(shù)、壓頭壓蓋間的摩擦系數(shù)婷婷5月天综合色色、磨具與工件間的壓強(qiáng)国产激情午夜福利片在线观看、壓頭壓蓋間的壓力等。

When rotating speed of the tie bar is 132r/min, according to coarse or fine lapping processes, the rotating speed of the ring gear should be between 31~54r/min.

當(dāng)系桿的轉(zhuǎn)速設(shè)定為132r/min時(shí)更多国产精品，根據(jù)粗人人看人人摸人人艹、精研磨不同的工藝要求，其內(nèi)齒輪的轉(zhuǎn)速應(yīng)在31~54r/min調(diào)整国产级特妇黄A片。

When the other parameters are fixed, the SSD can be decreased with the decrease of wheel infeed, the increase of wheel rotating speed and the increase of chuck rotating speed, and the increase of chuck rotating speed within a suitable range.

在一定的范圍內(nèi)欧美肏大屄，當(dāng)其它磨削參數(shù)不變時(shí)，硅片的損傷深度隨著砂輪進(jìn)給率的增大而增大www.aaa4a.com，隨著砂輪轉(zhuǎn)速的增大而減小国产视频啊啊免费看，隨著工作臺(tái)轉(zhuǎn)速的增大而減小。

The calculation results shows that ,(1) when the rotor rotates at the working speed, a local regurgitant whirlpool that is rightabout to the rotor"s rotating direction appears in the classifying region, which makes the separated granules come back to the outside of the classification district and influences the classification efficiency of the turbine classifier;(2) in the condition of a low rotating speed of turbo rotor, ultrafine particles can follow the gas phase by and large, but when the rotating speed increases, a phenomenon of velocity slippage between two phases appears evidently;(3) A operating parameter, air flow rate is so important that can directly influence the stability of flow field in classifying chamber, the bigger the air flowrate is , the steadier the flow field is;(4) Compared with straight blades, the new shape of blades with backward crooked elbow are helpful to improve the stability of flow field and form whole stream easily, also beneficial to advance the classification accuracy and classification efficiency;(5) The motion trace of particles are very complicated when the turbo rotor rotates at a high speed, the constant bounce of the particles appear between the blades and the coarse particles are even bounce back from the inlet, only the finer can pass through the classification area from the oulet;(6) Along with the increase of the rotor"s rotating speed, radiah axial and tangential velocity all begain to fluctuate repetitively like sine-wave, the smaller the particles are, the more violently they fluctuates.

數(shù)值模擬結(jié)果表明黄色视频在线观看免费入口，(1)在渦輪達(dá)到工作轉(zhuǎn)速時(shí)欧美黄片另类，在分級(jí)區(qū)域形成了一個(gè)與渦輪旋轉(zhuǎn)方向相反的局部回流渦，它使得分離出來(lái)的細(xì)粒重又被帶回分級(jí)輪外邊緣一级黄色片欧美，從而嚴(yán)重影響分級(jí)機(jī)的分級(jí)效率美女被破处视频网站；(2)粉塵粒子在渦輪低速運(yùn)動(dòng)情況下，基本上能跟隨氣體運(yùn)動(dòng)欧美自拍日韩经典，但隨著轉(zhuǎn)速加大女人天堂天天色，兩相之間出現(xiàn)了明顯的速度滑移現(xiàn)象；(3)分級(jí)機(jī)工作時(shí)的風(fēng)量也是一個(gè)比較重要的操作參數(shù)亚洲日韩中文字幕一区二区，它可以直接影響到分級(jí)機(jī)內(nèi)腔流場(chǎng)的穩(wěn)定性色婬视频激情视频，風(fēng)量越大，流場(chǎng)越穩(wěn)定；(4)同直葉片形狀相比較免费A片在线观看,，帶后彎導(dǎo)板的葉片看久久久久久久久特级毛片，有利于改善流場(chǎng)的穩(wěn)定性，流場(chǎng)容易形成整體流精品国产区，對(duì)提高分級(jí)效率和分級(jí)精度都非常有利99精品自拍视频在线播放；(5)粒子軌跡線在渦輪轉(zhuǎn)速較高時(shí)十分復(fù)雜，有的出現(xiàn)了反復(fù)的彈跳現(xiàn)象久久AV免费这里有精品，大顆粒不能通過(guò)分級(jí)區(qū)域而從進(jìn)口返流了欧美在线人一区二区三区视频，只有細(xì)小的顆粒才從出口處流出；(6)渦輪轉(zhuǎn)速加大時(shí)华人社区福利导航，粒子的徑向亚洲日韩国产高清mp4、軸向和切向速率出現(xiàn)了明顯的類似于正弦波的脈動(dòng)現(xiàn)象，顆粒越小一级a爱大片免费观看，脈動(dòng)程度越為劇烈99h久久久精品。

The analysis results indicate that the vibration fractional factor with rotating frequency has a close relationship with both rotating speed of rotor and damping of bearing under constant acceleration. When rotating acceleration is small and damping is large, the transient response is not sensitive to the variation of rotating speed; otherwise the imbalance response with constant acceleration and the response in stable state will build up obvious differences near critical rotating speed.

研究結(jié)果表明：在恒加速條件下，轉(zhuǎn)子同頻振動(dòng)分量與轉(zhuǎn)子的轉(zhuǎn)速美女黄污视频在线播放、支承阻尼等因素密切相關(guān)激情亚洲欧美另类录音，當(dāng)角加速度較小且阻尼較大時(shí)，其瞬態(tài)響應(yīng)對(duì)轉(zhuǎn)速的波動(dòng)不敏感婷婷五月情；而當(dāng)角加速度較大或阻尼較小時(shí)午夜理论片高清电影，恒加速過(guò)程不平衡響應(yīng)與穩(wěn)態(tài)響應(yīng)在臨界轉(zhuǎn)速附近將產(chǎn)生明顯的差異。

The complete wind turbine speed control firstly proposed here also improves the tracking effect of wind turbine rotating speed to variable wind speed. Wind turbine rotating speed synchronized power observer compensates the power ripple of wind turbine resulted in inverter dead time. A low pass filter used at the output of MPPT controller smoothes the speed reference, which makes the rotating speed of wind turbine more stable.

本文首次提出的變轉(zhuǎn)速擾動(dòng)的MPPT控制提高了風(fēng)車最大功率點(diǎn)追蹤的快速性和穩(wěn)定性先锋影音资源小说，風(fēng)車完全轉(zhuǎn)速控制提高了風(fēng)車轉(zhuǎn)速對(duì)變動(dòng)風(fēng)速的跟蹤效果小蝌蚪永久免费无码视频，轉(zhuǎn)速同步風(fēng)車功率觀測(cè)法消除了逆變器死區(qū)所造成的風(fēng)車功率波動(dòng)的影響，帶有低通濾波器的MPPT控制器使得風(fēng)車的轉(zhuǎn)速更加趨于平穩(wěn)黄色视频免费观看日本欧美www。

A mixed sensitivity H∞ control model is constructed and the band width of wind turbine speed control is designed according to the frequency characteristic of wind speed variation and noise of rotating speed sensor. The sensitivity function is decreased within this frequency band to restrain the wind torque perturbation to wind turbine rotating speed control.

通過(guò)構(gòu)造基于復(fù)合靈敏度的H∞魯棒控制模型www.com在线日，根據(jù)風(fēng)速的波動(dòng)頻率范圍和傳感器的噪聲頻率范圍設(shè)計(jì)了風(fēng)車轉(zhuǎn)速控制的帶寬，并在此帶寬內(nèi)降低系統(tǒng)的靈敏度函數(shù)性爱毛片无码在线观看，來(lái)抑制風(fēng)力轉(zhuǎn)矩對(duì)風(fēng)車轉(zhuǎn)速控制的干擾亞洲三級片性愛。

The rub-impact between rotor and stator often occurs because the rotor shaft stiffness decreases following the occurrence of the crack in the rotor shaft, and thus the coupling fault with rub-impact and crack is hackneyed fault type. Based on the nonlinear dynamical model of the cracked rotor-bearing system with rub-impact, the stability of the periodic motion and instability way were studied in unbalance-rotating speed plane and rotor/stator clearance- rotating speed plane and crack depth- rotating speed plane, and the main results were validated by the experiment.

轉(zhuǎn)子軸承系統(tǒng)裂紋故障的出現(xiàn)會(huì)引起轉(zhuǎn)子系統(tǒng)轉(zhuǎn)靜件之間碰摩故障的發(fā)生，因此裂紋碰摩耦合故障也是轉(zhuǎn)子系統(tǒng)常見(jiàn)的故障類型国产亚洲精品777777，本文在裂紋碰摩耦合故障轉(zhuǎn)子軸承系統(tǒng)的非線性動(dòng)力學(xué)模型基礎(chǔ)上国产一级牲交大片，分析了系統(tǒng)在不平衡量-轉(zhuǎn)速、碰摩間隙-轉(zhuǎn)速一级毛片不卡视频在线、裂紋深度-轉(zhuǎn)速等參數(shù)域內(nèi)，周期運(yùn)動(dòng)的穩(wěn)定性及其失穩(wěn)規(guī)律www欧美，并用實(shí)驗(yàn)驗(yàn)證了主要理論結(jié)果性激烈的欧美三级视频。

Some concrete suggestions for increases of packing fraction and rotating speed are presented, the rotating speed is 11.3% higher than the supercritical one by data analysis, which results in yield increasing and energy consumption decreasing within the optimum rang of rotating speed.

提出增加充填率和加快轉(zhuǎn)速的具體措施。尤其是通過(guò)數(shù)據(jù)分析確定該機(jī)轉(zhuǎn)速超過(guò)其臨界轉(zhuǎn)速11.3%左右，在最佳轉(zhuǎn)速區(qū)段黄色网站——18禁，其增產(chǎn)節(jié)能降耗效果最佳亚洲无码视频亚洲人的网站。

Such raw materials as waste polyethylent cable particles, pure polyvinyl chloride powder, wood powder, a metallic soap stabilizer, a coupling agent, chlorinated polyethylene and methacrylic acid polyesters and a lubricator are added into and mixed in a high speed mixer according to the formula, and the mixing temperature is 100 to 110 DEG C, the mixing time is 20 to 35 min; the well mixed material is added into an extruder for extrusion, the rotating speed of the mainframe of the extruder is 40 to 60r/min, the rotating speed of a feeding machine is 4 to 6r/min, and the materials are shaped after being extruded.

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