數字量 的英文怎麼說
中文拼音 [shǔzìliáng]
數字量
英文
digital quantity-
Counting - type analog quantity ( caq ), which is a new conception ， is introduced in this article. caq possesses some features of analog quantity and digital quantity, that is to say, it has double features
本文提出了計數型模擬量新概念，它同時具有模擬量和數字量的某些特徵或者說具有二重性特徵。The system comprises three modules : the first is the ccd driver module, which controlled with cpld. programming the cpld to produce ccd driving pulses and synchronized communication signals. after preprocessing, the output video signals are transmitted into high resolution adc module, in which they are converted into digital signals, and then processed in arm processing module
整個系統分為三個模塊: ccd驅動模塊的核心是一片復雜可編程邏輯器件（ cpld ） ，對其編程產生ccd的驅動脈沖及同步控制信號;視頻輸出信號經預處理后，由高精度ad轉換模塊進行采樣，將ccd輸出的模擬信號轉換成數字量;最後，將數據送入arm處理系統中進行后續處理。During the period of measurement, the transduction circuits transform the differential pressures, the absolute pressures and the temperatures received by the sensors into the voltage signals, and then, the voltage signals are transformed into digital signals by the a / d convertor. the mcu processes these digital signals and calculates the cumulation of the flow. finally the totalizers contact with the pc by rs - 485 bus to form a distributed measuring network
在測量過程中，系統以流量計節流所獲得的差壓信號作為主信號、絕壓和溫度信號作為補償信號進行流量積算，這三種信號分別由相應傳感器感知后，經各自的物理信號測量電路轉換為電信號，再由a / d轉換模塊轉變為數字量，交微控制器進行處理、積算。The diploma project researches the three - coordinate nc system of the boring and milling machine. the system must depend on the hardware - ipc ( industry personal computer ) and on the windows software. the hardwares have the framework of embedding nc in pc, which means that the hardware is composed of ipc, the intelligent sport control card ( pcl - 839 ) and the i / o card ( pcld - 782 / 785 ). we research the nc system based on the operating system of dos and develop it into the nc system based on the operating system of windows2000. the new nc system will do better for the three - coordinate nc machine tool than the old one
本文是以本學院自行研製開發的印製電路板鉆銑床為研究對象，以工控機為硬體平臺，以windows為軟體平臺，硬體系統採用「 nc嵌入pc式」結構，即運用現有的工控機+運動控制卡+數字量輸入輸出卡的基本結構，把機床控制系統開發成基於windows環境下的數控系統，代替原有的基於dos操作系統下的控制系統，從而實現對三坐標數控鉆銑床的控制。Fundamental standards. writing rules for numbers, quantities, units and symbols
基礎標準.關于數字量值單位和符號的書寫規則Digital quantity output card do181 wiring diagram
數字量輸出卡do181接線圖Digital quantity input card di181 wiring diagram
數字量輸入卡di181接線圖The software includes a monitor program, an initialization module, a watchdog module, a data fusion module, a can transmission module, a quadrature encoder pulse count module and an a / d interrupt service program
該系統軟體包括監控程序、初始化模塊、看門狗模塊、數據融合模塊、 can通信模塊、數字量採集模塊、正交編碼脈沖計數模塊和a d中斷服務程序。12 - channel digital quantity input output channel
12路數字量輸入輸出通道( 4 ) mathematic models are derived for digital weirs and electromagnetic flow meter inflow controlling systems. for which, dynamic characteristics, controlling errors, applicable limits are compared
（ 4 ）提出了數字量水堰和電磁流量計兩種入流控制系統的數學模型，並對其動態性能、測控誤差和適用范圍進行了分析比較。( 4 ) to record the running situation. and this software was developed by c + + under microsoft vc + + 6. 0 and is composed of 5 modules : the initial module to finish the video card and i / o card initializations ; the start - stop module to create and destroy the thread used to supervise light room and process image ; the image - capturing module to capture the image from ccd to ram ; the image processing module to get classified information through analysis ; the signal i / o module to send the signals to the outside and also to send outer information to the inside ; the system log module to record the running situation of the system and the quantity of detected eggs
系統由5個模塊組成：初始化模塊完成圖像採集卡和數字量i o卡的初始化；啟動停止模塊建立和消亡用於監控光室狀況和進行圖像處理與分析的線程；圖像採集模塊將光室中所成的像通過ccd經由圖像採集卡採集到主機內存中；圖像處理模塊對主機內存2001碩士論文摘要中的圖像進行分析，得出所需要的分級信息;信號1 / 0模塊將得出的分級信號送出至計算機外部，同時也將計算機外部的控制反饋信息傳至計算機內部;系統日誌模塊記錄系統的啟動運行情況和當前系統檢測鴨蛋的數量。This paper include the following parts. firstly the sine exciting - voltage is guaranteed by direct digital synthesize technology ; secondly the digital output of cos ( 9 ) and sin ( 9 ) are generated by microcontroller ; thirdly the two voltage signals which are the product of the two former signals gained by the multiplying d / a converter, being filtered and amplified, have constant frequency, and one amplitude has sine function relationship of with the input angle, and the other amplitude has cosine function relationship of with the input angle ; finally the two signals are acquired and analyzed by relative instrument and software
主要由以下幾部分組成：用數字頻率合成技術（ dds ）產生正弦激勵電壓信號u _ msin （ t ） ；用單片機產生幅度的數字量輸出sin （ ）和cos （ ） ；用乘法型d a轉換器實現激勵電壓和幅度的乘積，並通過濾波器和功放后即得到頻率固定，幅值隨輸入角成正餘弦變化的電壓信號；最後用數據採集卡採集輸出信號，顯示波形並進行頻譜分析。. pcl - 711b card offers many functions such as a / d conversion, d / a conversion, digital input and output and so on. in order to saving time, lightening the diffculty of programming, i take the programming method of driver level to control pcl - 711b card using visual basic6. 0 language
Pcl ? 711b卡提供了a d轉換、 d a轉換、數字量輸入和數字量輸出等i o功能，為了縮短開發時間，減輕開發的難度，本文採用了visualbasic6 . 0對pcl ? 711b卡進行驅動程序級編程來控制該卡。With the computer controlling the output of the digital signals and the analog signals, controls and adjusts startup, stop, turn and rotational rapidity of the transducer - electromotor and the strength of brake actuator ; installs the torque sensor on dynamical axis, and installs the encoder on non - dynamical axis of the dimensional globoidal indexing cam mechanism ; utilizes the virtual instrument language labview development the test and control system, with the computer real - time monitoring, late displays and storages the data of the test, and processes the data and analyses it
利用計算機控制數字量輸出和模擬量輸出來達到控制和調節變頻電機啟停、轉向、轉速;控制制動器的啟停和加載力;在弧面分度凸輪的加載軸和空軸上安裝扭矩傳感器和編碼器;應用虛擬儀器語言labview開發試驗臺的測控軟體系統，用計算機進行實時監測與事後顯示與存儲，並進行信號處理與分析。Measurement and characterization of surface texture is an important aspect of precision metrology. historically this has involved partitioning a profile into different wavelength regimes referred to as roughness, waviness and form followed by numerical quantization. parameters computed are then inspected for tolerance compliance to ensure a part performs its intended function. this approach is satisfactory when the specification has been carefully determined and the process is stable. however, when the manufacturing process is under development or when instability or modifications to the process invalidate specifications, there is a need to study surface finish parameters in relation to functional performance or process measures. in this context, the problem of surface texture classification and recognition are discussed. advanced techniques developed for this purpose along with applications are presented. also, the techniques discussed here will be useful across large bandwidth, from the characterization of nano scale to traditional micro scale surfaces
表面結構的測量與特徵描述是精密計量技術的一個重要方面，傳統上包括將輪廓情況根據不同的波長范圍劃分為粗糙度、波紋度和形狀及后續的數字量化.按算得的參數檢查它是否為公差允許，以保證零件執行其指定的功能.當技術特性已經經過仔細確定，並且其過程穩定時，該方法是令人滿意的;但是，當製造過程正在進行中或過程的不穩定、過程變化使技術特性失效時，就需要研究和功能表現及過程評定相關的表面參數.討論了表面結構的分類與識別問題.同時闡述了為此目的而開發的先進技術及其應用.所研究的技術對從納米尺度到傳統的微米尺度的較大帶寬范圍內的表面特徵描述都是有效的These field control modules include : analog input / output module ao / ai, digit input / output module di / do, sound alarm module, record module, etc. the key works is to develop canbus net card and its driver which is based on can2. 0a, configure software for the server pc and makeup communication protocol as well as modules driver programs
現場控制模塊主要有模擬量輸入輸出ai / ao模塊，數字量輸入/輸出di / do模塊，語音報警模塊和報警記錄模塊。本設計主要開發上位機組態軟體和網卡通訊驅動程序，制定符合can2 . 0a的模塊通訊協議和模塊驅動程序。They are voltage to digit data converting circuit board, current to digit data converting circuit board and digit data input / output circuit board. these circuit boards are used to acquire the main running parameter of hev experimental bed and to control the output of alarm message. in order to simplify the wire connection and signal conditioning, three piece of interface circuit boards correspondence to the three data acquisition circuit boards are equipped, and a wire connection box is also designed to contain them
本文監控系統的硬體以一臺工業控制pc機為核心並根據採集信號的性質配置了電壓-數字量轉換板、電流-數字量轉換板及數字量輸出輸出板，對hev運行系統的主要運行參數進行採集並進行報警控制；為方便接線和信號調理，配備了與採集板對應的接線和調理介面板以及接線盒。This solution uses digital switch to switching the current and voltage, the current circuit can not be broken when switching, and it is safety to the operator and device
採用數字量切換方式對電壓、電流進行切換，使得電流迴路切換沒有開路的可能，防止了電流迴路開路對人身及設備造成的危害。Designed the communication interface between the analytical system and process control computer with digital i / o card, realized the real - time acquisition of strip steel given information
摘要利用數字量i / o卡，設計了帶鋼質量數據分析系統與過程式控制制計算機之間的通信介面，實現了帶鋼給定信息的實時獲取。Input channel of digital quantity
數字量輸入通道分享友人