- 更多网络例句与数字控制相关的网络例句 [注：此内容来源于网络，仅供参考]
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Most of present airborne platforms are analogic control system, digital control system can improve the system general performance, digital control is the development direction of platform systems, digital control has especial techonoly, this paper focus on researching the key technologies of digital control of airborne electro-optical stable platform.
现有的机载平台大多采用模拟控制，数字控制系统能提高系统综合性能，便于系统调试，采用数字控制方式是平台系统的必然发展方向，系统辨识、控制器设计和多采样率问题的研究是数字控制系统研究的关键问题，有关机载光电稳定平台数字控制的这些关键技术研究是本文的目的。
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This paper precisely conducts the special topic research in view of some important technologies of the digitized control module.(1) AC motor control circuit of PAN/TILT is designed ,which speed is controlled by AT89C51 MCU. DC motor control circuit of LENS is designed too.(2) The hardware and software of automatic temperature control is designed, which used in camera protect box without A/D IC. A kind of single wire communication IC is used in the circuit. So, the program is given.(3) A method of video switch without picture shock is discussed in this paper, and 16x8 video switch circuit is designed. AT89C51 can carry out time sequence logical control with the sync signals by request..(4) The module of real-time clock is designed, in which, LCM is used, a kind of three-wire communication IC is used too.
1给出了一种由89C51单片机控制的简单易行的交流云台转动变速控制电路，实现了云台及其电动三可变镜头的控制；(2)给出了无需外加A/D、单线通信的防护罩自动温度控制电路，完成了单片机温度控制软件的设计；(3)提出了"无抖动"视频切换的设计思想，给出了16×8的视频切换电路，利用单片机在视频信号的场消隐期控制切换，从而实现了"无抖动"切换；(4)给出了一种三线接口通信的液晶显示实时时钟电路，完成了程序设计；(5)提出了在视频监控系统数字控制模块中，用CAN总线取代传统的RS-485总线，实现PELCO-P协议传输的方案。
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The book is divided into 14 chapters, including Introduction, continuous control system theory, process and discrete sampling, Z transform, sampled-data systems, discrete approximation of continuous system the equivalent, based on mathematical transform the classical design method, based on state space pole placement design methodology, multi-variable system of quadratic optimal control, quantitative effects, the choice of sampling period, the digital control system modeling, digital control system for a variety of design methods, variables quadratic optimal control systems, sampling cycle of selection, non-linear control of the problem, as well as digital control system, a typical application - Disk drive servo control design.
全书共分14章，内容包括概论、连续控制系统理论、采样过程和离散化、Z变换、采样数据系统、连续系统的近似离散等效、基于数学变换的经典设计方法、基于状态空间的极点配置设计方法、多变量系统的二次型最优控制、量化效应、采样周期的选择、数字控制系统的建模问题、数字控制系统的各种设计方法、变量系统的二次型最优控制、采样周期的选择、非线性控制的有关问题，以及数字控制系统的一个典型应用——磁盘驱动器的伺服控制设计等。
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Especially, the technology of Automatic Gain Control and signal processing are studied which are key factors working on the performance of the receiver. Based on analyzing the theory of automatic Gain Control, operational amplifiers 0P37 and logarithmic D/Aconverter AD7111A are used to design variable gain amplifiers which can be controlled numerally, A/D convector LTC1405 is Used to test the echo, Complex Programmable Logic device is used for controller, and an arithmetic is designed for automatic Gain Control which is simulated and analyzed in order to test its feasibility.
本文在分析自动增益控制AGC原理的基础上，采用集成运放OP37和数控增益衰减器AD7111A设计可数字控制的可变增益运放模块；采用高速A／D转换器LTC1405作为回波信号检测模块；采用复杂可编程逻辑器件CPLD作为核心控制模块，构成数字自动增益控制电路，并设计粗调和细调步进控制相结合的算法，对回波信号的增益进行精确而快速的调节控制，使回波信号振幅快速稳定在设计指标范围内，利于接收机后续信号处理电路对回波信号作进一步的处理。
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A new scheme of double loop feedback computer control system, which is based on virtual instruments technology, is put forward to improve control performance.
随着数字电子技术、计算机控制技术的迅速发展，数字控制系统的应用越来越广，已成为各类控制系统发展的趋势。
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The step motor can receive digital signal directly and has the ability to response outer environment immediately and has no accumulation error, which often is used in driving system. In this driving system, open-loop control system is composed of stepping motor, which can satisfy the demand not only for control precision but also for the target of economic and practicality. On this basis , the analysis of stepping motor in power calculating and style selecting is also given.
由于步进电机能够直接接收数字量，响应速度快而且工作可靠并无累积误差，常用作数字控制系统驱动机构的动力元件，因此，在驱动装置中采用由步进电机构成的开环控制方式，这种方式既能满足控制精度的要求，又能达到经济性、实用化目的，在此基础上，对步进电机的功率计一算及选型问题经行了分析。
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Since the roots of the characteristic equation of the digital control system must stay inside the unit circle =1 in the z-plane for the overall system to be asymptotically stable,we see that the second-order digital control system can be unstable for large values of T.
由于基层的特征方程的数字控制系统必须留在单位内循环= 1中的Z -飞机的整体系统是渐近稳定的，我们看到，二阶数字控制系统可为大型值不稳定普通应用评委的稳定性试验的特征方程的均衡器。
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With computer technology changing at an ever increasing pace, CNC controls may or may not be up grabble but, historically , take a high depreciation as new equipment replaces the old.
鉴于计算机技术的发展不断加速，数字控制也许已经有所改进，也许尚未出现重大改进，但从历史的角度看，由于新型设备不断地取代旧式设备，数字控制装置的陈旧贬值率是很高的。
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The totle digital control system takes microprocessor as a core, and it is shorted for singlechip digital control system.
全数字控制系统是以微处理器为核心的数字控制系统，简称微机数字控制系统。
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In addition, digital controllable ports of the padded delay cell are parametric, so the parameter can be configured at different design stages to change delay and offer flexible timing of IP core interface.
另外，弹性延迟单元中的数字控制端采用参数化可配置设计，数字控制端的参数值可以在设计的各个阶段自由重置，从而改变IP核接口的延迟，增加IP核接口的时序柔性。
- 更多网络解释与数字控制相关的网络解释 [注：此内容来源于网络，仅供参考]
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digital control：数字控制
焊接压力切换(VARIO PROCESS)有效控制融陷速度从而提高焊接强度相对位移模式(RPN)可保证恒定的焊接深度,避免塑料件本身公差的影响数字控制(DIGITAL CONTROL )保证焊接结果的可重复性.数字闭环发生器控制系统连续监控和调节换能器/变幅杆/焊模组的频率,
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digital control system：数字控制系统
今后,传统的分散型控制系统(DCS)要么转化为现场总线控制系统(FCS),要么吸收现场总线的控制模式,转化成为新型的数字控制系统(Digital Control System).
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DC Digital Control：数字控制
DC Digital Computer 数字计算机 | DC Digital Control 数字控制 | DC Digital Convergence 数字会聚
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digital control computer：数字控制计算机
digital contrast enhancement 数字反差增强 | digital control computer 数字控制计算机 | digital control system 数字控制系统
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digital control station：直接数字控制站
direct-current linear va riable differential transfor mer(DC-DC LVDT), 直流差动变压器 direc t | digital control station ,直接数字控制站 | direct digital control,直接数字控制
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numerical control system：数字控制系统
*动易网络--领先的内容管理系统(CMS)、网上商店系统(eShop)和企业*数字控制系统(Numerical Control System)发展史-数控系统-电气行[简介]数字控制系统(Numerical Control System)发展史2009/5/19/16:12 1946年诞生了世界上第一台电子计算机,
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numerical control：数字控制
数控加工技术概况: 数字控制(Numerical Control)简称数控(NC),是近代发展起来的一种自动控制技术,是用数字化信息实现机械设备控制的一种方法,在数控加工技术方面得到了广泛的应用.
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numerically controlled：数字控制的
numerically coded instruction 数字编码指令 | numerically controlled 数字控制的 | numerically controlled benders 数字控制折弯机
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Numerically controlled engine lathe：数字控制普通车床
numerically controlled drilling machine ==> 数字控制钻床 | numerically controlled engine lathe ==> 数字控制普通车床 | numerically controlled filament-winding machine ==> 数控绕线机
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numerically controlled benders：数字控制折弯机
numerically controlled ==> 数字控制的 | numerically controlled benders ==> 数字控制折弯机 | numerically controlled boring machine ==> 数字控制镗床