進動力矩 的英文怎麼說
中文拼音 [jìndònglìjǔ]
進動力矩
英文
moment of precession-
Through an application of the improved nonlinear vks model based on complex modulus, for the cases of general connections and inter - blade connections for the nonlinear elastomeric lag dampers, the small disturbance momental equation is given
採用基於復模量的非線性vks改進模型,建立葉間粘彈減擺器和普通連接粘彈減擺器的小擾動力矩方程。The content of this thesis comes from the fujian natural science found following research task 。 it studies on a space cantilever single beam attached to a moving support 。 inertia forces which are brought by the support ' s movement , are acceded to the equivalent initiative forces and the equivalent initiative moments 。 when we consider the relation of the forces and deformation , we change the method of material mechanical analysis to the elastic mechanical analysis 。 further more , we discusses the feasibility of the method which uses the multi - rigid - body discrete model to simulate the dynamic characteristic of a elastic body 。 first , the finite segment method is adopted to establish the models of the beam 。 based on kane ' s equations , dynamic math - model for the beam are derived 。 and by use of c - language and runge - kutta procedure , the computer - oriented procedure can give the whole responses of the beam 。 second , with compare to the numerical examples , the method which uses the multi - rigid - body discrete model to simulate the dynamic characteristic of a elastic body which is under the condition of movement is verified to be feasible 。
本論文為福建省自然科學基金后續研究課題,以已知支撐運動的單個空間懸臂梁為對象,在等效主動力與等效主動力矩中加入支撐轉動引起的慣性力,並在考慮力與變形關系時,用更一般的彈性力學分析代替材料力學分析,進一步研究用多剛體離散模型來模擬其動力學特性的可行性。首先,用有限段建立機械臂的多剛體離散模型,用kane動力學方法建立其動力學方程。並用c語言編制演算法程序,採用了四階runge - kutta積分程序求解微分方程組,給出構件的全部動態歷程。The optimum balancing of a four bar linkage with elastic links is studied, in which the control torque of redundant drives is taken as the design variable, and the shaking force and shaking moment of the mechanism are taken as the objective. the numerical simulation shows validity of the method
針對一平面彈性四連桿機構,以其震動力和震動力矩的加權和為目標函數,以冗餘驅動力矩為變量,對附加冗餘驅動的彈性機構進行最優平衡,其模擬結果表明該方法是有效的。The measurement of the friction moment and motor torque wave verifies that the stribeck friction model is accurate and the wave is periodic
進行了摩擦力矩和電機波動力矩的實驗測試,實驗驗證了非線性摩擦模型的準確可靠性,電機力矩波動的周期性。Taking the 718 model gimble as an object, the paper focuses on the influences of the nonlinear friction moment and the motor torque wave to the system ' precision at low speed first, then, makes the theoretical analysis and simulation. the experimental verification is carried out in the 718 model for the effectiveness and feasibility of the discussed compensation methods. the low speed properties and the main reasons for the jitter are analysed
本文以718模型轉臺為研究對象,針對伺服系統低速工作時影響其精度的非線性摩擦力矩、電機波動力矩,從理論上進行了一系列的分析和模擬研究,討論了低速補償方法,並在718模型轉臺伺服控制系統中實驗驗證了補償方法的可行性和有效性。Moment gyroscope is implement institution of the satellite attitude control system. the dynamics equation of single gimbal control moment gyroscope is set up, the control law of moment gycroscope is designed and the distribute matrix is confirmed reasonly
選擇力矩陀螺作為該衛星控制系統的執行機構,建立單框力矩陀螺的動力學方程,在此基礎上進行力矩陀螺控制律設計,合理地確定力矩陀螺的分配矩陣。In an in - wheel - motor drive vehicle the tire - road friction coefficient is observed by means of drive torque, which can be acquired accurately and controlled easily
摘要路面附著系數是影響車輛行駛安全性的重要因素,利用輪邊驅動電動汽車驅動力矩可以對路面利用附著系數進行觀測。First, a great deal of aerodynamics and moment parameters are processed by look - up table, and then the flight simulation model of normal aircraft and fault aircraft are established
首先,利用look - uptable對大量的氣動力參數及氣動力矩參數數據進行了插值處理,並在此基礎上建立了正常和故障飛機飛行的模擬模型。Firstly, under the assumption that the output driving torque generated by the stepper motor of the mirror is constant, such influence analysis is conducted. secondly, a mathematic model of the stepper motor is given. under the assumtion that the input impulse frequence is constant, the rotational motion of the stepper motor of the mirror with the mutual exertions of damping torque, friction torque and disturbance torque generated by satellite platform ' s attitude motion is simulated and analyzed
對衛星平臺姿態振動對紅外相機掃描機構轉動的影響進行了系統深入的模擬分析:首先在步進電機驅動力矩一定條件下,模擬分析了星體姿態運動干擾力矩對紅外相機掃描鏡轉動的影響;接著建立了步進電機的數學模型,在步進電機輸入脈沖頻率一定條件下,模擬分析了步進電機在阻尼力矩、干摩擦力矩、平臺干擾力矩等負載轉矩的共同作用下的轉動情況。A open - close mathematic model is introduced into calculation of torsional vibration. results show : kurtosisness and high harmonic will increase when crankshaft have crack. 5. cylinder score is also diagnosed by torsional vibration in this paper, when cylinder score occurring, the friction of piston will decrease the action of air pressure
本文借鑒了裂紋轉子剛度的開閉模型,首次對含有變剛度單元的柴油機動力裝置進行了扭振計算,結果表明柴油機曲軸有裂紋后,扭振的角位移和附加振動力矩的高諧次分量會增加,峭度值增加。Utilizing the dynamics simulative software adams to carry out computations on the dynamic response, driving moment and natural frequency of the robot, in view of the above the optimization was carried out on the structural parameters of the robot
利用動力學模擬軟體adams對機器人的動態響應、驅動力矩和固有頻率進行了計算,據此對機器人的結構參數進行了優化。The equation of the dynamical model of the intelligent system is educed when the dynamical model is established in the second part. and using matlab software simulates the mathematic model. this program gives the key curves of the intelligent system for manipulator
應用拉格朗日方程建立了智能化供彈系統的動力學方程,並應用matlab軟體進行了動力學模擬,得到了驅動力矩曲線、速度曲線、加速度曲線等動力學特性曲線。The cycloid function is used to generate the horizontal and vertical foot trajectory respectively, and a modified cycloid function is used to make the acceleration curve of the joint more smooth and successive, the trajectory and drive moment of each joint is calculated by simulation
使用擺線函數分別產生足的水平和垂直方向的運動軌跡,用修正擺線函數使其加速度進一步平滑、連續,對各關節的運動軌跡和關節驅動力矩進行了模擬。On the base of the kinematics modeling and lagrange dynamics equation, the mathematical modeling is set up to dynamics of the robot. by using this method, the driving moment needed by every joint is easy to be calculated, based on which dynamics analysis can be done and motor can be selected
在運動學建模的基礎上,基於拉格朗日動力學方程進行機器人的動力學建模,該建模方法可以方便地分析各關節所需的驅動力矩,作為動力學分析和機器人電機選型的依據。The structural vibrational equations for the former are also depicted. the disturbance torques imparted by space environment are analyzed, which include gravity gradient torque, solar pressure torque, aerodynamic torque and magnetic torque
對作用在衛星上的各種空間環境力矩進行了分析,包括重力梯度力矩、太陽光壓力矩、氣動力矩、剩磁力矩等。In order to satisfy the customer ’ s more strict command to the inertia brake, changsha sanzhan inertia brake co., ltd. and hunan university allied to develop a set of equipment of inertia brake test rigs, which can test and research the property of starting torque, braking torque, vibration of axis and so on to all kinds of models and specification of inertia brake to improve the property and quality of product
為了滿足用戶對慣性制動器產品提出的更高要求,長沙三占慣性制動有限公司和湖南大學合作開發一套慣性制動器試驗臺裝置,對各種型號及規格的慣性制動器的起動力矩、制動力矩、軸向振動等特性進行測試和研究,以改進產品性能和提高產品質量。The proportional relief valve is used to adjust control the pressure of hydraulic oil, therefore controls the brake moment by adjusting the thickness of oil film
用電液比例溢流閥對控制油壓進行調節,從而調節油膜的厚度來控制制動力矩。Through the analysis of attitude dynamic equation, how to realize three axis passivity stabilization of the mircrosatellite by just using environmental torque is presented. three sorts conformations of three axis passivity stabilization of the mircrosatellite by using environmental torque are put forward, one is to realize the passive attitude control of microsatellite by using the aerodynamic moment and the gravity gradient, the other two by making use of the gravity gradient and the geomagnetic moment, the attitude dynamics of microsatellite of the three sorts are analysed in detail
通過對衛星姿態動力學方程分析,給出如何利用環境力矩實現微小衛星三軸姿態被動穩定,並提出三種利用環境力矩實現微小衛星三軸姿態被動穩定方案,即一種利用氣動力矩和重力梯度實現微小衛星三軸姿態被動穩定方案和兩種利用重力梯度和地磁力矩實現微小衛星三軸姿態被動穩定方案,對採用這三種方案的衛星的姿態運動進行詳細分國防科技大學研究生院學位論文析。An experimental study on the aerodynamic characteristics of new concept car is conducted by model wind tunnel test, covering the pressure coefficient and wake vortices on longitudinal symmetry plane, as well as aerodynamic forces and moments under different yaw angles
摘要用模型風洞對新概念車在不同橫擺角下縱對稱面上壓力系數、整車氣動力和氣動力矩的變化以及縱對稱面尾部流態分佈進行了試驗研究。In the system of “ direct measurement ” of inertia brake, the braking torque is measured by the right torque sensor of inertia brake. in the thought of special construct of inertia brake, the work braking test data of inertia brake is analyzed, mathematic differential equation is founded, the variable situation of braking torque is analyzed through program calculation, some problem is discovered and suggestion is put forward to the application of test rigs and inertia brake
在慣性制動器的「直接測量」系統中,用慣性制動器右端的扭矩傳感器來測量制動力矩的,考慮到慣性制動器特有的結構,對慣性制動器工作制動試驗數據進行分析,建立了數學微分方程,通過編程計算分析了制動力矩的變化情況,發現了問題並對試驗臺和慣性制動器的應用提出了改進建議。分享友人