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数字位置
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  digital position
    24 bits complementary code was adopted in the digital position feedback signal format of roll frame, pitch frame and yaw frame, and the three-point digital differential analyzer algorithm was adopted in the digital velocity calculation. On the basis of digital frequency discrimination of feedback signals, the digital position feedback loop was debugged with variable frequency feed forward compensation.
    仿真转台各框架的数字位置量反馈采用二十四位补码格式,而数字速度反馈量解算则采用了三点式数值微分算法,在对反馈信号数字鉴频的基础上,对仿真转台的数字位置环进行了变频前馈补偿.
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  “数字位置”译为未确定词的双语例句
    By the introduction of the concepts of digital place, digital transition, and sampling period, the net named digital Petri Net(DPN) was proposed. The characteristics and operation rules of the DPN were analysed. A digital control system was modeled using the DPN.
    通过引入数字位置,数字变迁和采样周期等概念,提出一种新型Petri网———数字Petri网(DPN),分析该网的特点及其运行规则,并用该网对数字控制系统进行建模.
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    This paper presents a method of information hiding based on the digital-position information, bringing forward an augmented identity matrix and a definite arithmetic upon it.
    描述了一种基于数字位置信息的信息隐藏方法,给出了一个单位增广矩阵,并在此基础上给出了具体算法。
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  digital position
A digital position-sensitive X-ray imaging scintillation detector has been designed for the MEDIANA medical diagnostic station of the Kurchatov Synchrotron Radiation Center (the Kurchatov Institute).
      
Hardware implementation of the design is described and experimental results of a digital position control system over one direction using two dc thrusters fed by four quadrant (PWM-Driven) transistor choppers are given.
      
Built-in tolerance monitoring devices in digital position converters for detection of implicit parametric failures
      
Drive is through high-torque DC motors with closed-loop digital position control and clutchless drive systems.
      
Encoder, Linear A digital position transducer which directly measures linear position.
      
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In this paper a new algorithm for the scheduling problem in 9-lattice is presented. The newly constructed algorithm, due to the adoption of a pre-processing procedure and a control mechanism in loops lo limit the position changes of the numbers that are already scheduled, is more efficient than already published ones. For any sovable initial configuration, to acheive the objective configuration, at most 86 moves, or not more than 38 moves, is needed by using this new algorithm.

在已有工作基础上重新构造了九宫排定问题的算法.在该算法中采用了预处理,在循环中控制已排定数字的位置变化,使得以往算法中的环向移动不复存在,从而优化了算法,降低了计算复杂性.

By the introduction of the concepts of digital place, digital transition, and sampling period, the net named digital Petri Net(DPN) was proposed. The characteristics and operation rules of the DPN were analysed. A digital control system was modeled using the DPN.

通过引入数字位置,数字变迁和采样周期等概念,提出一种新型Petri网———数字Petri网(DPN),分析该网的特点及其运行规则,并用该网对数字控制系统进行建模.

Based on the comprehensive performance specifications of simulator of fire control system in an armed helicopter, a novel debugging strategy is proposed in this paper. On the basis of the deduction of mathematic model of simulator, four close-loop control scheme was adopted in the whole control system, which consists of current feedback loop, velocity feedback loop, modulated position feedback loop and digital position feedback loop. The feedback signals of tachometer and potentiometer should be calibrated before...

Based on the comprehensive performance specifications of simulator of fire control system in an armed helicopter, a novel debugging strategy is proposed in this paper. On the basis of the deduction of mathematic model of simulator, four close-loop control scheme was adopted in the whole control system, which consists of current feedback loop, velocity feedback loop, modulated position feedback loop and digital position feedback loop. The feedback signals of tachometer and potentiometer should be calibrated before debugging the testing simulator. Cascade phase advance-lag corrective network was adopted in the forward channel of internal loop. 24 bits complementary code was adopted in the digital position feedback signal format of roll frame, pitch frame and yaw frame, and the three-point digital differential analyzer algorithm was adopted in the digital velocity calculation. On the basis of digital frequency discrimination of feedback signals, the digital position feedback loop was debugged with variable frequency feed forward compensation. Series hardware-in-the-loop experiments have been conducted in the past year. Experiment results demonstrate that this simulator of fire control system in an armed helicopter has very small amplitude error, phase error and wide frequency response, which can satisfy the static and dynamic performance specifications very well.

针对武装直升机火控系统仿真转台的综合性能指标,提出了一种新型调试策略.在推导该仿真转台数学模型的基础上,设计了其控制系统的四闭环结构:电流环、速度环、模拟位置环和数字位置环.调试前首先对测速机、电位计等反馈信号进行校准,内回路前向通道采用了串联超前-滞后校正网络.仿真转台各框架的数字位置量反馈采用二十四位补码格式,而数字速度反馈量解算则采用了三点式数值微分算法,在对反馈信号数字鉴频的基础上,对仿真转台的数字位置环进行了变频前馈补偿.仿真测试实验表明,应用本文设计的调试策略所研制的武装直升机火控系统仿真转台幅值误差和相位误差均很小,具有较高的频带宽度和良好的跟踪性能,能够满足各项动静态性能指标要求.

 
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