置位脈沖 的英文怎麼說
中文拼音 [zhìwèimàichōng]
置位脈沖
英文
set pulse-
This paper describes an automatic contest robot from the cctv holding “ the first robot tv contest all over the academician ”, describes the function and the realization of the robot in greater detail. the robot adopts two stepper motors in the stepped driving control system and putting - ball control system like fishing, with the control of at89c52 single - chip microcomputer, it can synchronously produce driving pulse for two stepper motors and control the moving of the robot along the predetermined line
該競賽機器人採用步進電機作為行走驅動,釣魚桿式的放球控制系統,在at89c52單片機的控制下,分別為左、右步進電機產生脈沖,控制機器人按照預設的固定路線行走,待機器人到達預定的目標位置后,同時控制多個放球機構,從而能分別將賽球準確地放入到比賽圓筒中。Based on the diopter status of myopia and hypermetropia, the paper presented the principle of excimer laser refractive surgery, the change of impacting cornea curvature on the cornea diopter. in this chapter, we also discussed excimer laser - corneal tissue interactions and photoablation. determine the relationship between the fluence of arf excimer laser and the cornea ablation rate, attain the relationship between the energy density and the ablation depth
研究了激光與生物組織相互作用、光蝕作用及準分子激光消融角膜的機理;首次定量研究193nm準分子激光高斯光束的切削量與能量密度的關系,計算單個激光脈沖角膜切削量;發現了角膜曲率對切削效果的影響,首次提出了角膜曲率半徑、切削位置與切削深度的關系;首次定量確定了激光光斑參數及其排列方式對術后角膜表面粗糙度的影響,為更精確實現角膜切削和提高切削后角膜表面光潔度、減少手術后角膜渾濁及角膜表面術后不規則提供了理論依據。Its current products include : top oscillation electrical precipitator, side electrical oscillation precipitator, magnetism controlled static electricity precipitator, wet electrical precipitator, honeycomb electric catching tar instrument, high - pressur silicon rectifier equipment and plc low - pressure controlling system, blast furnace gas impulse precipitator, high concentration pulverized coal collector, coke oven and boiler flue gas low pressure impulse precipitator, blower fan inhaler, crossing piping gas cooler, high temperature fume cooler, gyre - orientation impulse hop - pocker and all sorts of molded sections
目前主要產品有:頂部振打臥式電除塵器、側部振打電除塵器、磁控靜電除塵器、濕式電除塵器、蜂窩電捕焦油器、高壓硅整流裝置及plc低壓控制系統、高爐煤氣脈沖除塵器、高濃度煤粉收集器、焦爐及鍋爐煙氣用低壓脈沖除塵器、風機空氣過濾器、橫管式煤氣冷卻器、高溫煙氣冷卻器、回轉定位脈沖大布袋及加工各種冷彎型鋼。In this paper, the signal processing of sum and difference patterns of amplitude dual - plane monopulse radar and the effect of amplitude - plane non - consistency are analyzed from the coordinates relationship of four - horn antenna at length, and its corresponding simulation is verified, which bring convenience to engineering implementation
文中從四喇叭天線的位置坐標關系,詳細分析了雙平面振幅和差式單脈沖雷達信號處理過程以及三通道幅相不一致性的影響,並且進行了相應的模擬,為工程實現帶來了很大的便利。Position control of d. c. motors has been done by means of pulse width modulation.
直流電機位置用脈沖寬度調製法控制。Second, the results of theory analysis and simulation research show that the output of one cycle controlled bridge switching power amplifier have dc offset because of the nonideal characteristic of reset signal. the magnitude of output dc offset voltage is proportional to width of reset pulse. a voltage compensation technique is used to solve this question, and the computation formula of compensation voltage is gived. the circuit compensated and not are researched through simulation and experiment, which results show that compensated circuit solve the output dc offset effectively
其次,理論分析和模擬研究結果表明,由於復位脈沖的非理想特性,單周控制的全橋開關功率放大器輸出端存在直流偏置問題,其大小與復位脈沖的寬度成正比。針對輸出直流偏置問題,提出了電壓補償的改進方案,給出了補償電壓的具體計算公式。對補償前和補償后的方案進行了對比模擬研究和實驗研究。A new method to estimate doppler centroid and doppler rate applicable to real flight condition is proposed
該方法設置飛機速率和脈沖重復頻率比為常數,保證方位向接收信號均勻空間取樣,使用實時最小二乘擬合演算法。Advantages, disadvantages and limits of arm are thoroughly examined using signal processing methods. based on the above, incoherent and coherent two - point - source decoy methods and modified coherent two - point - source decoy methods to deflect arm are brought forward. arm ’ s homing heads are generally of mono - pulse structure, so coherent two - point - source ’ s interference resembles that to mono - pulse radar except that interference to radar belongs to far field scope, but interference to arm varies from far field to near field because relative distance drastically changes between the homing head and the two - point - source with missile ’ s homing head continually approaching the target
Arm的導引頭一般為單脈沖體制,因此,相干兩點源對導引頭的干擾類同於對單脈沖雷達的干擾,不同的是:對雷達的干擾都是遠場,而導引頭隨著導彈不斷接近目標,兩點源與導引頭的相對位置發生劇烈變化,由遠場變化到近場;導引頭天線口面上的合成場也發生了大的變化,相位波前的畸變產生干擾,這就是相干兩點源誘偏的基本思想。At the aspect of hardware design, it adopts pulse distributor and the technology of single polar voltage drive to accomplish the function of controlling and driving stepmotor ; it adopts the technology of pulse width modulation and cmos h - bridge drive to accomplish the function of controlling and driving dc servomotor ; it adopts d / a convertor to accomplish the function of controlling ac transducer ; it adopts the technology of digital phase detection to accomplish the function of detecting the feedback position signal of induction phase shifter ; it adopts dsp ’ s capture cell to accomplish the function of detecting the feedback position signal of photoelectric coder
硬體方面,採用脈沖分配器和單極性電壓驅動技術實現了步進電機的控制和驅動功能;採用脈寬調制技術和cmos互補h橋驅動技術實現了直流伺服電機的控制和驅動功能;採用d / a轉換器實現了交流變頻器的控制功能;採用數字化相位檢測技術實現了感應移相器位置反饋信號的檢測功能;採用dsp的捕獲單元實現了光電編碼器位置反饋信號的檢測功能。Simulation results show that the value of performance index, considering the influence of the first impulse ' s position, is better than that if not considering, and prove that the design of ga is successful
模擬結果表明,考慮和不考慮第一次脈沖的位置的影響,優化指標值相差懸殊。Its high resolution in range is fulfilled by using pulse compression method. its high resolution in azimuth is achieved by utilizing the doppler information among the signals received by sar at different locations. hence, the acquired image of the targets is of very high resolution
它採用距離向的脈沖壓縮技術和方位向不同位置上接收到的脈沖間的多普勒信息來獲得兩維的高解析度,從而得到高解析度的目標圖像。We build a close vibration compensation system which can successfully achieve the measurement of interference fringes movement and - vibration compensation. it puts forward pre - setting fill - in pulses method to implement phase shifting with the same pzt. with this new method, the interference fringe can be stabilized at any pre - setting phase position
提出了填充脈沖數預設定的方法,可以將干涉條紋鎖定在任意設定的位相位置,實現了用pzt同時實現振動補償和移相測量;深入分析討論了pzt的延遲問題,創造性地提出了用多次逼近補償的辦法,給出了反饋補償的演算法,解決了補償過程中存在的系統不穩定和過補償的問題。With the mathematic model of tracking beam current by velocity, real - time tracking can be obtained ; with current simulation controlling transducer and subsection linearity, precision of velocity ( error in ? 1 % ) is triumphantly can be controlled ; with inspection of the pulse numbers of switches, the position of all vehicles are checked to eliminate the error of calculating distance between all ones
通過建立速度跟蹤束流的數學模型,較好地解決了速度跟蹤束流的實時性問題;通過採取用電流模擬量控制變頻器和分段線性處理的辦法,成功地解決了速度精度問題(誤差在士1 %內) ;通過檢測接近開關觸發的脈沖數,適時校核所有小車位置,消除各車之間距離計算誤差,從而很好地解決了距離累計計算誤差。Although there have been many application instances in the field of input / output device technology, we need an specific project and technology route aimed at an given application. in this thesis, we combine the introduction and analysis of relative technology to describe the accomplishment of a coordinate collecting device which is based on incremental rotary encoder. this device is an specific device applied to collect the corrdinate displacement of ground image ’ s three - dimensional model created by full digital photogrammetric station. cpld chip and vhdl are applied in this device to carry out the following work : phase control of the electrical pulse created by incremental rotary encoder, counting the number of electrical pulse, controling the state of signal processing circuit, exchanging data between this circuit and pci control
本文結合相關技術的介紹和分析,描述了一個基於增量式旋轉編碼器的坐標參量採集介面卡的實現,此介面卡是一種用於採集全數字攝影測量系統地面影像模型坐標位移量的專用設備,該設備採用cpld器件和vhdl語言實現增量式旋轉編碼器的脈沖信號鑒相和計數、信號處理部分的狀態控制以及和pci總線晶元ch365之間的數據交換和通信功能,同時該設備的驅動程序基於wdm模式,並且配置有結構良好的動態鏈接庫程序作為系統軟體和驅動程序之間的數據和控制交互中間介面,能夠方便地運行在windows98 / 2000 / xp操作系統平臺上,具有實時性強、工作穩定、通用性較好和性價比高等特點。The enhanced preamble detection must get the start time of the signal by the detection of valid pulse position and lead edge
報頭檢測的任務是檢測有效脈沖位置和上升沿檢測,從而確認一個四脈沖的報頭,得到信號的到達時間。Ultrasonic bio - instrumentation has several display modes used in medicinal field now, such as b - mode and m - mode, etc. b - mode uses the modulated brightness to represent the amplitudes of ultrasonic echoes, and the coordinates in the formed profiles correspond to positions of ultrasonic beam scans one by one
B型顯示是用亮度調制來顯示回波脈沖幅度,顯示的橫軸和縱軸與聲束掃描的位置一一對應,形成超聲切面圖像。Author has investigated the air - volume affect the pressure oscillation in piping system from converse viewpoint. when the structure parameters of the air - volume are some certain value, the pressure oscillation in the exit of the piping system is magnified. this idea makes us a new way to design the power source of high pressure water - jet
研究表明:當設計的空氣室結構參數(空氣室的容積,安裝位置等)取某組數值時,管道出口端的壓力波動幅值遠大於系統輸入壓力波動幅值,從而為設計高壓脈沖水射流的動力源提供了一條新的思路。Using the variational method, analytical conditions for stationary pulse propagation in dense period fibers with strong dispersion management are deduced. the expression of initial soliton peak power is given. by employing the obtained formulas, the soliton evolution semi - analytically in various dispersion maps can be investigated. effects of the third order dispersion are also studied in this paper. the results show that imperfect dispersion slope compensation can cause pulse central position shift and even serious degradation of soliton shape
利用變分方法,推導出了在強色散管理的密集周期光纖中脈沖穩態傳輸的解析條件,並給出了初始脈沖峰值功率的表達式.運用這些公式,對各種色散管理系統中孤子的演化進行了半解析的考察.三階色散也被考慮在內.結果表明:不完善的色散斜率補償將導致脈沖中心位置的偏移甚至嚴重的孤子形狀劣化The reflected wave will be received by the receive antenna and transferred to digital data. we can analyze the data that saved by the computer of gpr to deduce the medium ' s property, situation, location and so on. being a kind of nondestructive, untouched method, it has many advantages such as nondestructive, rapidness, simpleness and high precision, so it will have wide applications in the ways of examination, control and maintenance to road quality, especially for highway
路用探地雷達是近幾年發展起來的、應用於公路無損檢測的一項新技術,它利用超寬帶脈沖電磁波對路面結構層進行探測,當雷達發射天線發射的電磁波在路面結構層中傳播時會在介電特性突變處產生反射和透射,反射回來的波經由接收天線接收並轉化為數字信號儲存起來,通過分析探地雷達回波信號來估計路面結構層的性質、狀態和位置等特徵。For the measurement of analog signals such as voltage and current of astg, a filter card for pre - disposing is designed, in order to improve real - time performance, algorithms for ac analog sampling is simplified, and a compensation algorithms for phase error due to sequence - sampling is brought forward. for the measurement of impulse - width signals such as rotor - speed and rotor - position - angle, an intelligent interface card based on isa bus is designed. all programs for measure and control based on c + + are compiled and debugged and the flow for system debugging is summarized
為了提高實時性,對交流采樣演算法進行了簡化,並提出了由於非同步順序采樣所造成的相位誤差的補償演算法;針對轉速、轉子位置角等脈沖寬度信號的測量,深入分析了測量原理,設計了基於isa總線的智能介面卡;編制和調試了基於c + +的全部測量控製程序;完成了整個系統的調試,並總結了調試方法。分享友人