正弦運動 的英文怎麼說
中文拼音 [zhēngxiányùndòng]
正弦運動
英文
sine movement-
The case of a harmonic oscillator driven by sinusoidally varying force is an extremely important one in many branches.
在許多領域中受正弦變化力策動的諧振子是一種十分重要的運動。This dissertation emphasizes on the creation of image space, the author present a display system in which screen moves with a sinusoidal velocity profile to create image space. this paper uses linear approximation to make the system display homogeneous graphic and analyzes worst - case positional error due to linear approximation
本論文重點分析了顯示單元中成像空間的構造,提出屏幕按正弦曲線運動的方式來構造成像空間,用線性近似的方法得到均勻的圖像,並分析了由於線性近似帶來的最大屏幕位置誤差。In view of this situation this article has conducted research to the design of metallurgy auxiliary biography with the frequency conversion table electrical machinery first multianalysis to the frequency changer and the frequency conversion table electrical machinery movement characteristic is carried out, the voltage waveform harmonious which the frequency changer outputs is big, attacks in a big way, and the voltage climbing rate reaches as high as 6600v / mu s which is 20 times ordinary sine alternating voltage, the rolling mill auxiliary biography table set the extremely strict request to the electrical machinery ; its movement frequency is very low, rate frequency in 8 - 20hz ; the velocity modulation scope is wide, the lowest movement frequency lowers to 1hz, and the starting number of times is quite frequently, each hour reaches as high as 600 - 800 time, the impact shoulders in a big way, the overload capacity request is high
針對這一情況本文對冶金輔傳用變頻輥道電機的設計進行了系統研究。首先對變頻器和變頻輥道電機的運行特性進行詳細分析,變頻器輸出的電壓波形諧波大,沖擊大,電壓上升率高達6600v / s ,是普通正弦交流電壓的20倍;軋機輔傳輥道對電機提出了十分嚴格的要求:其運行頻率很低,額定頻率在8 - 20hz ;調速范圍寬,最低運行頻率低到0 . 5hz ,起動次數相當頻繁,每小時高達600 - 800次,沖擊負荷大,過載能力要求較高。Based on the 3d geometry vision, using java3d, for each of worktable and sine welding seam part of sheet, the ve modeling experiments achieve the construct of macrostructure, security virtual thickness and virtual guide based on error, and accomplish the space restriction of robot running. via the structured laser sensor ’ s getting three - dimension information, the experiments achieve the modeling of sine welding seam part of sheet by using programming
在立體視覺傳感系統獲得三維信息的基礎上,利用java3d建模技術,分別對工作臺、薄板正弦曲線焊縫工件進行建模實驗,完成了虛擬環境中宏觀環境模型的建立,並根據誤差建立了安全虛擬厚度和虛擬向導,完成了對機器人運動的空間約束;通過結構光傳感器獲得三維信息,編程實現對薄板正弦曲線焊縫模型的建立。Thus every motion corresponding to any initial curve is no more than a sum of sinusoidal periodic modes.
這樣,每一個對應于任一初始曲線的運動不外乎是正弦周期模式的和。Adopting the form closure error and the motion transmission error of sine curve to carrying out theoretical analysis of this cam mechanism
對該凸輪機構採用正弦曲線的形封閉誤差和運動傳遞誤差進行了理論分析。Non - sinusoidal oscillation has the characters that the upward time of the continuous casting mold is longer than the downward time. it can reduce the friction between the mold wall and the strand surface, and prevents the strand from leaking and cracking, it can also improve the surface quality of slabs. it is the main development of continuous casting mold in the future
其中非正弦振動具有上升運動時間比下降運動時間長的特點,能減小結晶器與坯殼之間的摩擦力,防止坯殼的拉漏和拉裂,改善鋼坯的表面質量,是今後連鑄結晶器振動發展的主要方向。A study on the proposed scanlan linearity has discovered that if the self - excited loads and movement of the model and velocity constitute a linear relationship, and the model vibration accounts for a sine function of the frequency, the rate of the high - order harmonic waves should be quite small
考查了scanlan的線性假定:如果自激力與模型運動的位移、速度成線性關系,模型振動是某一頻率的正弦函數,那麼相應的自激力也應是這一頻率的正弦函數,高次諧波的分量應極小。Based on the model of a three - phase hybrid stepping motor, the torque expression is deduced. the effect of subdivided driving on operating performance is analysed. it is illustrated that sine wave subdivided driving can make stepping angle and torque equal
本文以三相混合式步進電動機數學模型為基礎,推導出其轉矩解析式,分析了細分驅動對于改善步進電動機運行性能的作用,論述了正弦波細分驅動可以實現等步距角、等力矩均勻細分驅動的原理。A programmable dynamic target system is presented in this paper. on basis of analyzing the deficiency of traditional rotary target system, the significance and practicability of programmable dynamic target is proposed. through obtaining the corresponding relationship between target and theodolite, simulation model that aims at founding the laws of the moving target produce influence on theodolite was set up
根據靶標與光電經緯儀之間相對運動關系的數學模型建立了模擬模型,並應用模擬模型進行了大量的模擬試驗,對比了靶標做勻速運動和做正弦擺動對被檢測的光電經緯儀的跟蹤曲線產生的影響,證實了靶標在編程式控制制下按正弦規律進行擺動可以更好的檢測光電經緯儀的跟蹤性能。Packaging - complete, filled transport packages and unit loads - sinusoidal vibration tests using a variable frequency
包裝.完全滿裝運輸包裝和單元裝載.用變頻進行正弦波振動試驗The third chapter proposed three ways in making three - dimensional animation based on collecting all databases, which are the key of developing cai software. the author built the animations of belt drive and chain drive independently using 3ds max and solidworks. at the same time, a general machine and moving of balls were animated by some program languages
用3dsmax與solidworks結合製作了機械設計課程中的帶傳動、鏈傳動的三維動畫;用編程語言開發了機械原理課程中的鉸鏈四桿機構的動畫模擬;闡述了編程語言與應用軟體結合開發動畫的原理,且用vb與autocad結合開發球體沿正弦曲線運動的動畫的例子來說明二者結合的一般方法。The dynamic response of the cam mechanism fan - out was found with the rule of sinusoid acceleration, and these establish the foundation of the design of the cam contour line, and provide a fire - new idea for the research of the mortar pump
通過正弦加速度運動規律得到了凸輪機構輸出端的動態響應,為凸輪廓線的沒計-奠定了基礎,為砂漿泵的研究提供了嶄新的思路。After studying the traits and operating characteristic of the repmsm, a speed adjusting scheme combining the in - phase variable - frequency speed adjusting with a speed - closed loop is introduced specially
本文研究了正弦波永磁同步電動機的特點及其運行特性,確定了以他控式磁通軌跡法變頻調速和轉速閉環調節相結合的調速方案。The performance of the electric vehicle is improved greatly in which the harmonic wave of output voltage, power loss and torque pulsation of the system are decreased by controlling the switch angles
它運用規則采樣法產生正弦脈寬調制波,通過開關角的控制抑制逆變器輸出電壓中的諧波分量,降低了電動機的損耗和轉矩脈動,使電動車的運行性能得到了較大改善。To adapt the width of welding lines and improve the welding quality, adding swing to the moving on theoretical center track is put forward with the actual welding process synthetically thought of. circle swing mode and. sine swing mode are discussed as typical ones and the equations of moving tracks are established
為了適應焊縫的寬度,提高焊縫的質量,並結合焊接過程的實際情況,確定了在理論中心軌跡的基礎上添加附加擺動,討論了圓擺動和正弦擺動兩種典型模式,建立了運動軌跡的方程。Many types of dynamic load can be used to analyze the problems of interaction of soils and structures with this program. and it is necessary to use effective stress method to study dynamic deformation problems of soil subgrade. for convenience, traffic load is simplified as half - sinusoidal load, and the soil of subgrade is assumed to be strain - hardening
將交通荷載簡化為半波正弦荷載,假定地基土體為硬化型土,運用本文編制的動態彈塑性有限元程序,分析了單次動力加載和循環動力加載條件下道路橫截面與軟土地基共同變形特性。Firstly, according to the characteristic that the doppler frequency shift signal can be approximated as a single sinusoid signal, the extended sinusoid signal retrieval ( pisarenko and esprit ) methods are presented and signal state and measurement formulations are developed, so the kalman filter recursive method is got. the brief introduction of low velocity moving target doppler frequency shift signal wigner - ville transformation and wavelet transformation expression are presented in this paper. secondly, because the clutter is gaussian distribution, cumement and high - order spectrum based methods are presented and the simulation results prove their good performance to suppress gaussian clutter in low velocity moving target doppler frequency shift signal processing
一個方面是根據低速目標的多普勒信號可簡化為單一正弦波形式這一特點,得到了擴展的高斯色噪聲背景下的諧波恢復演算法,即高斯色噪聲中的pisarenko諧波恢復法和旋轉因子不變法( esprit ) ;並推導了信號的狀態方程和觀測方程,進而得到基於卡爾曼濾波的遞推演算法對信號進行提取;本文還簡單的介紹了低速運動目標的多普勒頻移信號的wigner - ville變換與小波變換;另一個方面是針對雜波服從高斯分佈這一特點,提出了對接收信號求累積量和高階譜來對高斯雜波進行抑制。The results show that the algorithm has remarkable effect on suppressing structure vibrations, excited under the periodic and random excitations
最後,運用該演算法對懸臂梁分別在正弦及隨機激振作用下的主動控制進行了模擬研究。Analysis of steady - state operating of current mode sine - wave driving bldcm
電流型正弦波驅動無刷直流電機穩態運行分析分享友人