隨機加速度 的英文怎麼說
中文拼音 [suíjījiāsùdù]
隨機加速度
英文
casual acceleration-
Shotcrete - rock bolt support and concrete lining are important parts of timbering structures in modern tunnel construction, and there are also essentials for natm. the intensity difference of concrete is big because of the big randomicity at the aspects of material, metage of additive, mix round, ratio of water and lime, spray construct and water maintain
由於噴射混凝土和二次襯砌在拌和料、外加速凝劑的稱量、拌勻以及水灰比的配比、在噴射作業及灑水養護上都存在著很大的隨機性，其強度的差異也較大。The analysis results show that the palcement styles and the rotating angles of such a large scale deployable boom systems are functional importantly. the motions and damps of the boom systems also take importance. if motions become larger, the time for the booms to reach their spreaded states is shorter, and the impact velocities become larger, the impact accelerations become larger too
分析結果表明，對于大尺度的伸桿機構，其布置方式和展開角度對其展開運動有重要的影響；同時也研究了鉸鏈處外力矩對展開運動的影響，隨著該力矩的增大，伸桿到達鎖定狀態的時間減少，碰撞時的速度增加，由此產生較大的加速度；分析了伸桿彈性和阻尼對伸桿展開過程的影響，彈性增大碰撞加速度增大，阻尼增大加速度減小，因此可將鉸鏈處外力矩和伸桿阻尼作為伸桿展開運動調節的手段。The main research work of the thesis is summarized as follows : 1. the improved fuzzy logic control method the phenomenon of steady - state errors and flutter exists in the traditional fuzzy controller. an improved fuzzy controller without quantilizing is presented
地形跟隨飛行控制律設計針對某型飛機應用控制航跡角法和控製法向加速度法對不同的反饋信號分別設計了pi控制器和模糊控制器，並做了模擬比較與魯棒性驗證。This paper describes the vibration equation of this structure, and derives the horizontal vibration displacement and acceleration response spectrum and the mean square response on the base of the complex modal analytical theory
建立該結構體系在脈動風作用下的振動方程，基於隨機振動的復模態理論，推導位移和加速度響應譜及均方響應的表達式。Using esvrst made in china, the road roughness is reappeared with high precision. and the multi - output acceleration expectant stochastic waveforms of independent suspension and bumper are acquired with unchangeable precision
並以獨立懸架和保險杠上的響應為對象，以穩定的精度再現了多點輸出的加速度隨機波形。This paper puts forward several views as the follows. for the siso test task, the esvrst ( electro - hydraulic servo vehicle road simulation test - bed ) system may be describe ^ by siso carma. for the multi - output test task, such as to reappear multi - channel waveform of acceleration, the inputs and outputs is coupled, the esvrst system must be describe ^ by mimo carma
針對上述問題本文提出了對于電液伺服汽車道路模擬試驗臺單輸入單輸出系統的試驗可以用單輸入單輸出carma模型描述；對于電液伺服汽車道路模擬試驗系統多點輸出的加速度隨機波形再現試驗以及其它多輸入多輸出問題，因為存在輸入輸出量之間耦合關系，所以必須用多輸入多輸出carma模型描述。This paper relates to some problems about the determination of design ground motion parameters, which include the choice of the attenuation relationship of rock horizontal acceleration response spectrum, the impact of focal depth to rock peak horizontal acceleration and rock response spectrum curves, the choice of intensity envelops function and random input phase, the choice of soil nonlinearity and shear wave velocity, scale of design ground motion response spectrum etc. in the researches of relative aspect, based on a typical section plane of the engineering site, influence of the change of some parameters on design ground motion parameters and the existing errors and corresponding rules are studied by using the method of one dimension model of equivalent linearization
摘要研究了確定設計地震動參數中涉及的若干問題，其中包括基巖水平加速度反應譜衰減關系的選擇、震源深度對基巖水平加速度峰值及基巖反應譜曲線的影響、強度包絡線函數及輸入隨機相位的選擇、土體非線性特性參數和土層剪切波速值的選擇、設計地震動反應譜的標定等問題。The random excitation of the four wheels is used as the input of this system. the changing rule of vertical displacement, three directions of acceleration power spectrum density function of person - chair system of model ca - 141 and etc. in the frequency domain is simulated using matlab. the rationality of the model is analyzed and validated by comparing of relevant testing results and theoretic analysis
以頻域內四輪隨機激勵作為系統輸入，用matlab模擬低地板城市客車等三種車型人椅系統三向加速度功率譜的變化規律，逐項分析車速、懸架剛度與阻尼參數變化對車輛平順性的影響，通過與相關研究結果的比較及理論分析驗證了模型的合理性。The acceleration time process of road surface plainness is got by using two integral calculus of the acceleration time process which is measured by five - wheel equipments. this data is worked as the input of the road surface for theoretical calculation. the result of experiments mostly fits that of calculation, and then the multiple - acceleration power spectrum distribution of the artillery and tractor are acquired
在瀝青路面、破損鋪磚路和砂石路面上以不同速度進行了平穩隨機激勵牽引試驗，用五輪儀測量得到的加速度時間歷程進行兩次積分的方法得到路面不平度的時間歷程做為路面輸入進行對應的理論計算，試驗結果和計算結果基本相符，得到了火炮和牽引車多個加速度功率譜分佈。To improve dynamic performance control effect for air suspension vehicle with half vehicle model as a control object and perpendicular motion and longitudinal acceleration as control indexes, the half - vehicle model fuzzy control simulation was performed by taking grade b road as random input
摘要為了改善空氣懸架客車動態性能的控制效果，以空氣懸架客車1 / 2模型為控制對象，以車身垂直運動和俯仰運動加速度為控制指標，以b級路面為隨機輸入，應用模糊控制技術對1 / 2車輛模型進行了計算機控制模擬分析。( 2 ) the response characteristics of wind - induced vibration under uncertain parameters were analyzed, which suggested a simplified method for evaluating mean and standard variance of acceleration responses. compared with the results given by a form and fosm method, the suggested methods can give a more precise estimation
（ 2 ）研究了隨機參數作用下的結構風振均方根加速度響應的分佈規律，給出了直接估計均方根加速度響應均值和方差的解析表達式。Kinematic analysis : by denavit - hartenberg method, space geometry relationship of each pole relative to fixed reference frame can be described with equal index transform, also do space relationship of two adjacent poles with 4x4 equal index. so equivalent equal index transform matrix can be deduced from them. when sportive equations and sportive coordinate frame of workpiece exercise point are set up, the coordinate values of exercise point can be got, the pose and situation of two manipulators are analysed, in the end each joint valiable and its velocity, acceleration are worked o ut
運動學分析：利用denavit ? hartenberg法，用齊次變換描述各個桿件相對于固定參考系的空間幾何關系，用一4 4的齊次變換矩陣描述機鄰兩桿的空間關系，從而推導出等價齊次變換矩陣，建立兩機械手運動方程，確定工件作業點隨動坐標系，求出作業點坐標，對兩機械手的位姿進行解析，求出兩機械手的各關節變量及其速度、加速度值。Power bond graph is used to established the bond graph model of the lifting and dropping of hydraulic pile hammer and state space equation in the paper for hydraulic pile hammer is perplexing nonlinear system. in order to attain the graph that pressure, position, velocity, acceleration vary with time in the course of driving pile simulation procedure solving state space equation is designed on the basis of combining four - order runge - kutta method with predicator - corrector method, dynamic simulation of the hydraulic system is studied in matlab 6. 5. it is convenient to analyse dynamic characteristics of the hydraulic syste m, beneficial to the design and parameter optimization of the hydraulic system. in the final part of the paper, under detailed analysis of the control characteristics for double - acting hydraulic pile hammer with double cylinders, control system based on the programmable logic controllers founded on technology of modern compute is designed
由於液壓打樁錘液壓系統是一個復雜的非線性系統，本文採用功率鍵合圖法建立液壓打樁錘上行、下降的鍵合圖模型和狀態空間方程，通過四階龍格?庫塔法和預估?校正法相結合編制了模擬程序對狀態空間方程求解，在matlab6 . 5中進行液壓系統的動態模擬，獲得液壓打樁錘運動過程中壓力、位移、速度、加速度等隨時間變化的曲線圖。此曲線圖方便了對液壓系統動態特性分析，為液壓系統的設計和參數優化提供了有益的借鑒。最後，在深入分析雙缸雙作用液壓打樁錘控制系統的功能要求后，採用了以現代計算機技術為基礎的新型工業控制裝置? plc可編程式控制制器，設計出了雙缸雙作用液壓打樁錘的電器控制系統。This paper uses of the actual mechanics form, cantilever bending stiffness is adopted in the mega structure, however shearing stiffness in the sub structure. based on the complex mode theory, this paper gains the expression of dynamical response of the system based the model of municipal no. l building of tokyo city and analyses the affection of the main parameters ( stiffness and damping ) on the two configurations ( sustaining type and hang type ). the results indicate that the rational stiffness of the sub structure can control the deformation of the mega structure perfectly, but the acceleration of the sub structure increases at the same time
本文採用了更接近實際的力學模型，主結構採用彎曲剛度，子結構採用剪切剛度，利用隨機振動復模態理論，推導了巨型框架減振結構的動力響應表達式，並以日本東京市政一號樓為基本模型，討論了巨型框架減振結構兩種結構形式（座承式和懸掛式）的主要參數（剛度和阻尼）對減振效果的影響，結果表明：與普通巨型框架結構相比，減振結構通過合理選擇子結構剛度，可以較好的控制主結構在順風向脈動風作用下的位移響應，從而提高結構的安全性，但與此同時，子結構自身的加速度響應也有了一定程度的提高。Then the complete simulink simulation model of soft cut - in system is established. what is more, an effective control strategy of soft cut - in unit that the cut - in rotate speed of wtg and scr phase - shifting rule should be adjusted in accordance with the rotate acceleration of rotor is put forward. on the basis that the simulation model is validated, the simulation and analysis of direct cut - in and soft cut - in process of wtg are carried out, which aims at supplying necessary referential material for the r & d of soft cut - in unit
本文以軟並網裝置主電路的分析與設計?軟並網控制系統的建模與模擬分析?可控硅移相觸發軟並網控制電路的設計為主線，首先進行了軟並網裝置主電路部分的分析與設計；然後建立了雙繞組風電機組的完整模擬模型，在對模型進行驗證的基礎上，提出了有效的風電機組軟並網控制策略，即機組並網轉速與可控硅移相規律應隨電機轉子加速度進行調節，並進行了風電機組直接並網與軟並網過程的模擬分析，得出了相應的結論，為軟並網裝置的研製提供了必要的參考依據；最後設計了軟並網系統的可控硅移相觸發控制電路的硬體與軟體的實現方案，並提出了系統硬體與軟體的抗干擾措施，重點闡述了主要軟體模塊的實現方案。The table is a important device in the hardware - in - the - loop simulation system, and it simulates the flight of unmanned aerial vehicle so as to achieve flying parameters from those sensors. the signals of sensors in the table are transmitted by many cables previously, thus it confines the movement range of the three - axis frameworks. as the perfomance of uav become complicated, the signals cables are replaced by wire rings in some tables, but it brings many difficulties and unreliable factors for the simulation table ’ s design also. bluetooth, as a new short - range wireless communication technology, is a reasonable and feasible scheme in this condition
三軸模擬轉臺是無人機地面半實物模擬系統中的重要設備，用來模擬飛機在空中的姿態和角運動，以驅動傳感器產生飛行姿態、角速度及角加速度信號。早期轉臺上傳感器信號通過穿在框架中的電纜進行傳輸，這就限制了框架的運動范圍。隨著無人機任務的復雜程度不斷提高，出現了採用導電滑環傳遞信號的模擬轉臺，但這也給轉臺設計帶來了困難，且存在不可靠因素。This paper presented a new approach for stacking velocity analysis, and discussed the principles, procedure, applicability, and applications of suppression of prestack random noises and outliers based on the new stacking velocity analysis method
提出了一種新的疊加速度分析方法，並詳細描述了基於這種新的疊加速度分析進行疊前隨機噪音衰減和野值壓制的原理、實現步驟、應用條件以及應用效果。Based on this study the following conclusions are drawn : the responses of cable - stayed bridge under seismic excitations with spatial variations differ from those under uniform seismic excitations up to 30 % ; the responses obtained by considering travelling effect as well as incoherence effect are close to those obtained by only considering travelling effect ; travelling effect has more significant effect on the seismic responses of cable - stayed bridge than incoherence effect ; if r. m. s. ( root - mean - square ) of random seismic ground motions are equal, seismic responses are considerably greater for the case of soft soil than for the cases of firm soil or medium soil
研究結果表明：與一致地震激勵相比，地震動的空間變化特性可以使斜拉橋的地震響應改變30 % ；同時考慮行波效應、部分相干效應時的地震響應接近於僅考慮行波效應時的地震響應；行波效應對斜拉橋地震響應的影響明顯大於部分相干效應的影響；在加速度均方根相同的隨機地震作用下，斜拉橋在軟場地條件下的地震響應明顯大於在硬場地條件下的響應，中等場地條件下的地震響應介於兩者之間。Actual measurement indicates that the displacement and acceleration of rail vibration both have random property, the displacement spectrum mostly has obvious low frequency contets which occupy dominant peak value range
實測表明，軌道振動的位移和加速度都具有隨機特性，位移頻譜組成以低階頻率為主，且有明顯占優勢的峰值區域。The purpose of this thesis is to investigate the control effect of a semi - active vibration absorber developed for an offshore platform and a vibration control system is also designed. the vibration of the structure is suppressed by installing the new and innovative variable stiffness tuned mass damper ( vstmd ) on the top deck of the platform
計算表明，本控制裝置對由隨機波浪載荷引起的平臺振動有一定的控制效果，對平臺甲板加速度響應的控制效果最高可達29 ，其平均效果也在21以上，甲板的位移響應也能得到一定的抑制。分享友人