【摘要】 地震往往带给人类的是巨大的财产损失和触目惊心的灾难,本文设计了一个地震环境虚拟现实系统,通过它,可以使参与者熟悉地震的前兆、强震以及余震的相关知识,帮助大家在突然遭遇到地震时做出正确的判断并逃离危险。该地震环境虚拟现实系统由电液伺服系统驱动,辅以全息音响技术、舞台灯光装置,是一个集科教和娱乐于一体的大型综合系统,具有较高的动态特性及较大的驱动功率;它由一台工控机控制,控制软件在LabVIEW平台上编写,控制参数的调整灵活方便;采用模拟和数字双闭环控制,并对各主要参数进行实时监控,增强了系统的可靠性;采用自适应逆控制方法及LMS算法,使得系统的输出精确地跟踪系统的期望响应。更多还原

【Abstract】 Earthquake always means large property loss and horrible disaster to human being. The paper brings out an earthquake surroundings VR system, through which people will be familiar with auspice of earthquake, strong shock and aftershock, and thus can make out right choices and get away from disaster. Consisting of an electro-hydraulic servo system, whole-information sound technology and some lighting device, it is a large scaled synthetical system that can be used in scientific study and entertainment. The system is of higher dynamics and drive power and is controlled by an industrial computer. The software is programmed based on LabVIEW and the system parameters can be easily modified. Furthermore, it is a double closed-loop system that includes a simulative closed-loop and a digital closed-loop, and its main parameters can be monitored in real time. So, the system is of higher reliability. The output signal is tracking desire signal exactly by using of adaptive inverse control method and LMS algorithms.更多还原