查询词典 computer based

In this paper, a high performance digital servo-system based on an industrial control computer is studied.

本文研究了一种以工控机作为控制计算机的高性能数字伺服系统。

The motor is competent for long low-speed or stopping up and the clutch has fine characteristic of control with torque. Sensors as forward access obtain signal, an industrial computer with abundant hardware resource as background utilize set-in boards based on PCI bus and serial modules to fulfill data transmission and instruction communication.

传感器作为前向通道拾取各信号，后台以工业控制计算机丰富的硬件资源为基础，利用基于PCI高速总线的插卡式测量板卡和串口模块实现与计算机的数据传输和命令通讯。

So we designed a adaptive synchronizing controller based on hereinbefore hardware environment: first a small magnitude reference signal r is outputted to system through the signal card (to ensure that the vibrating system works in a linear state), and this signal is sent to the moving coil of vibrator through the power amplifier, so vibration is produced through electromagnetic induction. Secondly the vibration signal can feedback to the data acquiring card in the servo system through the acceleration sensor on the Vibroseis reactor M〓 and the base-plate M〓, then the computer can get the current vibrating state y〓 of the coil of vibrator according to the feedback information from the data acquiring card, and give a real time comparing between the current state y〓 and the reference output y〓 of the set-in reference model with current reference input being r , then regulates the correlative controlling parameters according to the error e〓=y〓-y〓 till y〓→y〓, finally normal signal sweeping begins with a certain phase fixed. Meanwhile a synchronization signal for seismic signal record is sent to seismograph from synchronization signal outputting component in the Vibroseis system to perform the controlling process of synchronization of sweeping phases.

为此，我们基于以上的硬件环境设计了一个自适应同步控制器：首先通过信号发生卡对系统输出小幅度的参考信号r(从而保证振动系统工作处于线性状态)，信号通过前置放大器、功率放大器等送到激震器动圈，并通过电磁感应产生振动，振动信号通过可控震源激震器反应块M〓和基板M〓上的加速度传感器反馈给伺服系统中的数据采集卡，工控计算机根据采集卡的反馈信息，获取当前激震器动圈的振动状态y〓，并实时地将该状态与内置的参考模型在当前参考输入r下的参考输出y〓进行辨识，再将两者输出误差e〓＝y〓-y〓对系统的有关控制参数进行调整，直至y〓→y〓，最后在经过某一固定的相位后，开始信号的正常扫描过程，与此同时，由可控震源系统的同步信号输出部件向地震仪送出一地震信号记录同步信号，进而完成扫描相位同步控制过程。

Based on holographic reproduction theory, the shape of the reflector in the copying system was improved, which was designed by computer.

根据全息图再现理论利用计算机设计改进了复制系统的光路中反射镜的面形。

At last it is applied in computer communication. A new stream cipher approach based on shift register is proposed.

本文提出了一种明文为字符序列的基于移位寄存器的序列加密新方法。

Based on Sievert's law, a computer-aided analysis system used in measuring hydrogen quantity absorbed in liquid state aluminum alloy was developed.

基於Sieverts定律，研制了检测液态铝合金吸氢量的计算机辅助实验系统。

Based on Sievert's law, a computer aided analysis system used in measuring hydrogen quantity absorbed in liquid state aluminum alloy was developed.

基于 Sieverts定律，研制了检测液态铝合金吸氢量的计算机辅助实验系统。

The former is the core of hardware, it is based on industrial control computer that expended with analog signal input board and digital signals input and output board.

其中工控机是自动化测试系统的硬件核心，在工控机内扩展了数据采集卡和数字量I/O卡，完成对电源输入、输出信号的采集和对系统的控制。

The hardware includes industrial control computer, high sample rate DAQ card and signal transform box, and the software is designed based on Labwindows/CVI.

该测试系统硬件部分主要由工控机、高速数据采集卡及信号调理箱构成，软件部分基于NI公司的Labwindows/CVI虚拟仪器开发平台设计。

Based on Matlab, simulation program of grating diffraction is complied. By changing adjustable parameters, computer simulations of white light interference and diffraction experiments (i. e., grating diffraction, single slit and double-slit diffraction, double-beam and multi-beam interference experiments) can be achieved.

基于Matlab软件编写出白光光栅衍射仿真程序，通过改变可调参数实现白光干涉、衍射实验（包括：光栅衍射、单缝及双缝衍射、双光束及多光束干涉等）的计算机仿真。

By the time of its fall, most of the prisoners were writers who had written against the corruptions of the government.

到它被攻陷的时候，里面多数的犯人是写了反对政府贪污文章的作家。

The most obvious variation to ovum morphological character was that the color was changed from light green to sepiaceous in embryonic development, and all the ovums were almost hatched after 96h.

在胚胎发育过程中卵的形态特征最明显的变化是颜色从淡绿到深褐色，卵在发育96h后卵基本全部孵化。