某型雷达模拟器操纵杆功能设计

操纵杆在虚拟现实及各种模拟装备上的应用愈加广泛,但目前该领域的研究大都局限于游戏摇杆和飞行摇杆的应用,在功能需求较为复杂时往往显得力不从心,无法满足装备需求。以操纵杆控制雷达模拟器参数变化的需求为背景,给出了硬件连接方法和软件实现方案,验证了所编程序符合操纵杆功能需求,很好的实现了用操纵杆对模拟器参数变化的控制。该技术不局限于技术本身对输入数值变化的控制,它对虚拟现实条件下如何实现操纵杆对飞行器的灵活全方位控制具有很好的借鉴作用。     

基于PID算法的红外目标模拟器运动控制系统设计与实现

针对某型机载光电探测仿真测试系统中红外目标模拟的工程需求,运用PID控制方法,提出了采用单片机和无刷直流电机的硬件实现方案,研究了PID参数整定方法,成功实现了红外目标模拟器运动控制系统的设计。使用结果表明,模拟器工作可靠,满足对红外目标的仿真需求。     

基于 PID算法的红外目标模拟器运动控制系统设计与实现

针对某型机载光电探测仿真测试系统中红外目标模拟的工程需求,运用PID控制方法,提出了采用单片机和无刷直流电机的硬件实现方案,研究了PID参数整定方法,成功实现了红外目标模拟器运动控制系统的设计。使用结果表明,模拟器工作可靠,满足对红外目标的仿真需求。     

雷抗装备自动测试系统信号环境模拟器实现

信号环境模拟器的实现是构建雷达对抗装备自动测试系统的重要组成部分.文中以侦察装备为测试对象,分析了模拟器的组成要素,利用安捷伦信号源及数字信号处理电路构建了模拟器,实现了单部雷达脉冲、多部雷达脉冲、视频脉冲及其他要素的模拟.最后,利用可扩展标记语言和数据库完成了对模拟器数据的描述与存储.实践证明,模拟器能很好的满足装备的测试需求.     

基于战术背景的雷达信号模拟器需求分析

从部队训练对雷达信号模拟器的需求出发,提出一种基于战术背景的雷达信号模拟器的设计方法,并分析了其体系结构及各组成部分的功能。基于战术背景的雷达信号模拟器可以很好地模拟部队训练所需要的雷达信号环境,并具有安放在固定平台即可实现模拟运动雷达威胁源的作用。     

自动化技术与远动技术

0509653利用遗传算法进行 PID 参数寻优的倒立摆控制系统[刊,中]/王彪//计算要机测量与控制.—2004,12(12).—1171-1174(C)0509654车辆运动模拟器运动参数实时监测系统[刊,中]/孙双蕾//火力与指挥控制.—2004,29(6).—77-80(C)针对车辆运动模拟器运动参数的实时测量要求研制了一套计算机实时在线监测系统,介绍了监测系统的组成和功能,通过对车辆运动模拟器油缸位移的分析,推导了模拟器运动参数的理论解算方法,并从数据通讯、处理和管理等方面对监测软件进行分析与设计,从而实现了模拟器运动参数监测模式的多样化。参6     

基于TS101的SAR回波信号模拟器设计与实现

针对SAR系统的测试要求,设计了一套基于DSP处理器TS101的SAR回波模拟器。该模拟器采用标准的CPCI 6U板。利用CPCI总线技术实现人机交互,能够根据目标回波参数生成所需的SAR回波数据,并通过DSP的链路口输出两路正交回波信号。测试结果表明,该模拟器生成的回波信号质量高,实时性强,能够满足SAR系统测试的需求,具有很高的工程应用价值。     

实时雷达电磁环境模拟器及其实现方法

随着现代雷达技术的发展，采用计算机仿真技术和高速数字电路技术的各种目标和环境模拟器在雷达的开发研制过程中发挥了越来越重要的作用。该文简述了实时雷达电磁环境模拟器的基本组成，对不同需求时模拟器的实现方法进行了探讨。着重介绍了一种较大规模的实时雷达电磁环境模拟器，对该模拟器的组成、各部分的功能和实时信号产生的具体实现都作了详细的描述。     

基于近距多天线技术多方位多目标模拟方法

利用雷达目标模拟器能够显著提升雷达试验、维护和训练等工作效益。提出利用近距多天线技术实现多方位多目标模拟,解决了雷达目标模拟器与雷达间距离、通道转换和目标模拟器参数设计等难题。最后通过仿真分析,给出了目标模拟器参数设计方法,具有重要的工程指导意义。     

星模拟器多色温模拟技术研究

针对星模拟器对多色温模拟的需求,提出了一种星模拟器多色温模拟方法。结合由氙灯和卤钨灯组成的宽光谱光源灯阵,分析了不同波段数据和不同波段带宽数据变化对色温的影响。基于多项式的拟合方法,利用遗传算法实现了色温模拟的反馈控制,实现了在350～900 nm光谱范围内对3900 K、4800 K、6500 K色温的光谱模拟,满足了星模拟器对多色温的模拟要求。     

一种自动测试游戏机手柄芯片的设计与实现

游戏机手柄芯片的测试一直以来总是采用人工依次测试测点的方法,这种方法费时费力,难以满足批量生产的要求。本文介绍了一种测试游戏机手柄芯片的新方法,以游戏机手柄芯片E2749为例,用单片机实现芯片的自动测试。实践证明,这种方法原理简单,可移植性强,可广泛运用到各类芯片的测试中。     

基于AVR单片机的电动代步车控制器

提出一种高性能低成本的电动代步车控制器设计方案。该控制器以Atmel公司的AVR单片机为控制核心,H桥电路作为直流电机驱动器,使用者通过摇杆操控电动代步车的速度和转向。控制器的软件部分由系统自检、摇杆位置检测和电机运动3大部分组成,并灵活使用系统时标,事件触发机制和有限状态机等编程新方法,以确保系统的安全性和稳定性。实践表明,该电动代步车控制器能够实现多种故障诊断功能,电机启动和停止时运行平稳,摇杆操作灵活,系统整体性能良好,能够满足实际使用要求。     

摄像机空中轨道拍摄控制系统设计

根据摄像机在空中轨道的拍摄需求,设计了一种由伺服电机驱动摄像机实现俯仰摇移运动功能的控制系统。所设计控制系统的硬件包括伺服电机、无线数传模块和控制摇杆等相关设备,控制平台由基于LabVIEW2012开发的软件系统实现。通过仿真和实验证明,该控制系统具有定位准确、响应迅速、操作简单等特点,为实现摄像机在空中轨道的稳定拍摄提供了可靠保证。     

Nonlinear Compensation of a New Noncontact Joystick Using the Universal Joint Mechanism

This paper demonstrates a new noncontact electronic joystick using a single Hall sensor that detects a horizontal vector in the magnetic field. Furthermore, in this paper, the nonlinear characteristics between the output of the Hall sensor and the movement of the joystick bar are modeled and compensated to be linear. The dynamic horizontal vector of the magnetic flux is detected by the Hall sensor while a permanent magnet is rotated with the joystick bar, which has a 2-D detecting area. With the nonlinear modeling equations, the Hall sensor output became linear and accurate for the 2-D joystick movement. Through real experiments, it is shown that the single Hall sensor structure mechanism is superior to the dual sensor structure in sensing 2-D motion without offset.     

Teleoperation of a Mobile Robot Using a Force-Reflection Joystick With Sensing Mechanism of Rotating Magnetic Field

Operators’ intelligent and skillful decisions are necessary for the teleoperation of a mobile robot when there are many scattered obstacles. Among the sensors used for environment recognition, the camera is the most popular and powerful. However, there are several limitations in the camera-based teleoperation of a mobile robot. For example, shadowed and curved areas cannot be viewed using a narrow view-angle camera, especially in an environment with bad illumination and several obstacles. Therefore, it is necessary to have other sensory information for reliable teleoperations. In this study, 16 ultrasonic sensors are attached around a mobile robot in a ring pattern to measure the distances to the obstacles and a collision vector is introduced as a new tool for obstacle avoidance, which is defined as the normal vector from an obstacle to the mobile robot. Based on this collision vector, a virtual reflection force is generated to avoid the obstacles and then the reflection force is transferred to the operator who is holding the joystick used to control the mobile robot. Based on this reflection force, the operator can control the mobile robot more smoothly and safely. For this bidirectional teleoperation, a master joystick system using a two-axis hall sensor was designed to eliminate the nonlinear region, which exists in a general joystick with two motors and potentiometers. The effectiveness of the collision vector and force-reflection joystick is verified by comparing two vision-based teleoperation experiments, with and without force reflection.      

面向未来移动网络密集连接的关键技术综述

在总结密集连接相关研究的基础上,阐述了未来移动通信网络中密集终端接入的关键技术,分析了网络架构及相关技术、密集连接的传输技术和接入技术等几个重点方向的研究进展,提出了多种连接形式并存的灵活性网络结构。针对上下行覆盖不对称问题,结合用户的服务质量需求,提出了基于上下行分离网络架构的密集终端接入方案,阐述了为应对大规模组网和密集连接需求要实现的网络架构立体化和通信与计算一体化的必要性,并基于太赫兹和区块链等技术对频段向上延伸和频谱资源共享等未来重点研究方向进行了讨论与展望。     

Implementation of a robust absolute virtual head mouse combining face detection, template matching and optical flow algorithms

This work proposes the implementation of a robust absolute virtual head mouse based on the interpretation of head movements and face gestures captured with a frontal camera. The procedure combines face detection, template matching and optical flow algorithms to emulate all mouse events. This virtual device is designed specifically as an alternative non-contact pointer for people with mobility impairments in the upper extremities. The implementation of the virtual mouse was compared with a standard mouse, a touchpad and a joystick. Validation results show motion performances comparable to those of a standard mouse and better than those of a joystick in addition to good performances when detecting face gestures to generate click events: 96% success in the case of opening the mouth and 68% in the case of voluntary eye blinks.     

基于Android的智能轮椅设计与实现

结合Android平台和操纵杆按钮式智能轮椅,本文设计实现了一款基于Android的智能轮椅。对操纵杆按钮式智能轮椅进行了电气化改造,安装了单片机、Wi-Fi模块、继电器等部件以使能用Android终端无线控制轮椅。在Android终端上设计实现了重力感应控制、语音识别控制等多种控制方式,使用户更加方便及多样化地控制轮椅;设计实现了GPS定位、短信报警、指南针等辅助功能,确保用户出行安全。此款智能轮椅具有多功能、廉价、使用方便、操作简单等特点,应用前景广阔。     

Analysis of position and isometric joysticks for powered wheelchair driving

The control interface is one of the most critical components of the electric-powered wheelchair (EPW). The control interface must accommodate the user's limitations and maximize the user's abilities. This study extended Fitts' Law for target-acquisition to a continuously updated target. The extended Fitts' Law was used to examine EPW driving with a standard position sensing joystick and a prototype isometric joystick (IJ). The extended Fitts' Law provides insight into the difficulty of performing target-acquisition tasks with an EPW. The test results showed significant differences (p < 0.05) among the two types of joysticks for selected measures of information processing capacity, movement time, root-mean-square-error, and average velocity while performing turning maneuvers. The mean values indicate that the IJ may provide superior turning performance.