改进型滑模变结构电机控制的脉振电流注入法研究

为了提高永磁同步电机无位置传感器技术的控制性能,在电机动态品质优化的研究中,以滑模变结构控制器替代传统的PI控制器,采用新型趋近律函数改进滑模控制器的输出模型,削弱了传统滑模控制存在的抖振,提高了控制系统的抗干扰能力。在分析无位置传感器技术时,引入高通谐振滤波器,采用具备以高信噪比为特点的两相静止坐标系下高频脉振电流注入法。仿真结果表明,在带高通谐振滤波器的高频脉振电流注入法中运用滑模变结构控制器,提高了转子位置估计的精度,增强了控制系统的鲁棒性。     

基于虚拟仪器的无线电设备检测仪

ATE是军用飞机测试技术的发展方向,利用虚拟仪器开发机载无线电台的检测系统是向ATE发展的重要一步。目前成熟的总线技术和虚拟仪器技术提供了技术实现途径,为此基于虚拟仪器技术设计了无线电设备的地面检测仪。     

关于虚拟现实技术在学科建设及教学中的应用

虚拟现实技术是运用计算机对现实世界进行全面仿真的技术。虚拟现实技术在教育领域的应用开创了教学新途径。本文阐述了虚拟现实技术的基本含义 ,并从多角度对虚拟现实技术在学院学科建设和现代教学的应用等问题进行了探讨     

Space Weather applications with CDPP/AMDA

AMDA (Automated Multi-Dataset Analysis), a new data analysis service, recently opened at the French Plasma Physics Data Center (CDPP). AMDA is developed according to the Virtual Observatory paradigm: it is a web-based facility for on-line analyses of space physics. Data may come from its own local database as well as remote ones. This tool allows the user to perform classical manipulations such as data visualization, parameter computation and data extraction. AMDA also offers innovative functionalities such as event searches on the content of the data in either visual or automated ways, generation, use and management of time tables (event lists). The general functionalities of AMDA are presented in the context of Space Weather with example scientific use cases.     

驾驶员诱发振荡的抑制方法

对电传操纵系统驾驶员诱发振荡（ＰＩＯ）的现象进行了分析，指出了舵回路速率饱和是造成ＰＩＯ的主要原因，并有针对对给出了一种非常规的用于解决饱和非线性问题的程序控制方法。这种方法主要是通过舵回路反馈的状态信息来改变驾驶杆输入信号的放大系数，从而达到有效抑制ＰＩＯ的目的，同时用Ｈｕｒｗｉｔｚ稳定判据进行了机理分析，最后给出了仿真验证结果，证明该方法是简单而有效的。     

WL10型近红外反射式光电传感器的研制

依据光学电子学的相关原理，针对烟草行业自动生产过程中对传感器的需要，研制了ＷＬ１０型近红外反射光电传感器，并成功地应用于烟草行业的生产线上。     

基于现代教育技术的虚拟实验系统构建模式的研究

虚拟实验系统是现代教育技术和实践教学理论相结合的产物。通过对网上虚拟实验系统构建技术的全面分析和总结 ,将适合于高职高专院校的虚拟实验教学系统的构建模式划分为模拟演示型、系统仿真型、虚拟操作训练型和真实测量型等四种类型 ,并给出了对于高职高专院校具有重要的意义的构建方案、实现思路、适用场合和应用案例     

虚拟现实技术在航空智能制造中的应用思考与展望

人机结合、虚实融合的新一代智能界面是智能制造的一个显著特征.虚拟现实技术作为一种高级人机交互技术,将在智能制造系统中发挥人与智能设备之间传递、交换信息媒介及对话接口的作用.随着智能制造系统的发展和虚拟现实技术的不断成熟和进步,虚拟现实必将逐步深入工业应用,在两化深度融合过程中充分发挥“智能之窗”的作用.     

Training effectiveness evaluation of helicopter emergency relief based on virtual simulation

Helicopters are playing an increasingly important part in emergency relief, such as earthquake rescue, firefighting and medical transport. With the development of virtual simulation technology, virtual simulation-based training is widely used in the training of the helicopter crew especially for the dangerous and costly missions mentioned above. A complete training effectiveness evaluation method is proposed to evaluate the trainees’ training effect based on virtual simulation in this paper. A key to this method is regarding the complicated process as a discrete event-activity flow system and establishing the evaluation indicator system. Then expert group and Analytical Network Process (ANP) are applied to determine the weight of indicators. When the training data are processed, there is a novel attempt to apply Fuzzy Comprehensive Evaluation (FCE) model to calculate the two categories of indicators. Eventually, an experiment and the analysis were carried out to validate the evaluation method.     

PC控制在炼焦项目中的应用

以三菱AnS系列可编程控制器为例，在介绍其主要模块的性能参数基础上，从硬件和软件两方面，阐述了如何实现对拦焦机和装煤车的控制及其控制特点。