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Technical features about CAN bus are described. One kind of scheme in Hotel Guest RoomService and Management System based on CAN bus is presented. The system's structure and mainfunction are expounded. The work principle and design of the system's hardware and software areexplained. The realization of the system's hardware and software is detailed from aspects of 相似文献
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A new scheme of adaptive control is proposed for a class of linear time-invariant( LTI) dynamical systems,especially in aerospace,with matched parametric uncertainties and input constraints. Based on a typical and conventional direct model reference adaptive control scheme,various modifications have been employed to achieve the goal. "C omposite model reference adaptive control"of higher performance is seam-lessly combined with "positive μ-mod",which consequently results in a smooth tracking trajectory despite of the input constraints. In addition,bounded-gain forgetting is utilized to facilitate faster convergence of parameter estimates. The stability of the closed-loop systemcan be guaranteed by using Lyapunov theory.The merits and effectiveness of the proposed method are illustrated by a numerical example of the longitudinal dynamical systems of a fixed-wing airplane. 相似文献
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针对集装箱快速检测的应用问题,阐述了雷达测速仪的测速原理和功能要求.分析了测速仪的硬件结构、组成、特点和设计方法.介绍了测速仪的软件设计方案以及频率采集、数据处理和频率信号输出子程序的设计思想. 相似文献
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分析了秸秆强度测试仪的结构和功能,针对其户外作业环境和智能检测的特点,选择嵌入式高速单片机C8051F020作为主控制器.阐述了秸秆强度测试仪的硬件设计,包括数据采集模块、存储模块、LCD、串口通讯模块和主控制模块.并对软件结构、主程序流程和各子程序的功能进行了介绍.户外作业测试结果表明:秸秆强度测试仪达到了智能化、低功耗、小体积和操作方便的设计目标,精度满足了秸秆强度分析研究的要求. 相似文献
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本文针对目前国内中厚板AGC系统基本停留在相对AGC水平,绝对AGC实际应用效果不理想的现状,分析了影响中厚板尺寸精度,特别是影响同板差和异板差的主要因素以及液压AGC的工作原理和存在的问题,提出了一套绝对AGC的实现方案。并以北京理工大学与马钢中板厂共同开发的液压AGC系统为例,介绍其实际应用情况。 相似文献