针对多变量的被控对象采用模糊控制算法时存在着"规则爆炸"问题,提出一种基于融合函数的模糊控制器设计方法.先对一级倒立摆系统进行建模并分析其稳定性和可控性,再设计LQR控制器;接着分析基于融合函数的模糊控制算法并设计模糊控制器;最后利用MATLAB软件对LQR控制和基于融合函数的模糊控制进行仿真研究.仿真结果表明,所设计的基于融合函数的模糊控制器能很好地对倒立摆进行控制,在控制性能、控制精度和抗干扰性方面优于LQR控制,并且具有很好的鲁棒性.

自动化立体仓库是现代物流技术的重要组成部分,其仓储能力强,空间利用率高,通过计算机对货物搬运、存取的自动化进行控制和管理.以立体仓库模拟装置为研究对象,综合应用了PLC、传感器、位置控制和MCGS组态软件.系统以PLC为下位机,MCGS为上位机监控软件实现货物的自动提取和存放,以及对系统的出/入库进行实时监控等功能.开发的系统实用性强、界面友好、控制方便、定位准确、性能可靠,工作效率得到一定的提高,对实际应用具有一定的参考价值.

根据人体行走的特点,设计了一种基于MPU6050加速度传感器的自适应采样计步器.该计步器通过MPU6050加速度传感器采集步态信号,运用滑动滤波算法对传感器输出的数字步态信号进行滤波与降噪处理,基于动态阀值算法对用户的跑步和走路两种状态进行自动识别,并根据人体不同的运动状态自动调整采样速率,将用户的运动数据通过蓝牙上传至手机端健康监测系统.实验结果表明:该计步器能精确完成人体运动步态的信号采集与计数,计步精度可达95％以上.

A new area peak step detection algorithm was presented to decrease the interference of wrist swing to the step detection in the human motion. It was based on the characteristics of the acceleration signal of human motion,us?ing Gaussian filter to cut down the noise effect on acceleration signal,and applying area peak detection to determine the effective step on the basis of the data of triaxial resultant acceleration. Besides,the variation of the amplitude of the acceleration signal was used as the eigenvalue,making realization of the automatic recognition of steady-state walk and run as well as the automatic adjustment of the sampling rate on various motional state,effectively reducing power dissipation. The experimental results show that,compared with dynamic threshold algorithm and single peak algorithm,the area peak step detection algorithm has highly precision in step detection,up to more than 95%.

传统的单片机实践教学中普遍存在学生动手能力较弱等问题,在对实践教学中出现的各种问题进行总结与分析后,提出了采用项目化教学模式的解决方案.针对项目化课题的选择、项目化教学的实施过程、实践教学资源的建设和创新能力的培养等方面进行了详细的介绍,并给出了具体的实施方案.经过三年多的单片机实践教学证明,项目化教学方法的实施,切实提高了单片机实践课程的教学效果,培养了学生的工程设计意识,有效提升了学生的实践创新能力.

A new intelligent vehicle terminal equipment system is designed.Taking ARM processor LPC2103 as hardware core,the system realizes the bus card charge,voice prompt,LCD display,real-time positioning and remote monitoring/scheduling on embedded operating system μC/OS-Ⅱ platform,using such technologies as IC card,GPS and GPRS.The paper mainly introduces the general scheme,hardware design and software design of the intelligent vehicle terminal system.

This paper first introduces performance characteristics of GPRS M23module and then presents in detail the control principle and methods of hardware design and software of M23 module in the area of wireless data transmission.Finally,this paper analyzes relative questions appearing during M23 data transmission and proposes related solutions which can guide the design of GPRS data transmission system.

Remote data acquisition and transfer in power system can be realized through general packet radio service(GPRS) network of China Mobile and Internet network.The paper describes the structure and operational principle of GPRS-based power remote meter reading system,and presents a power remote meter reading system based on GR47 module of Sony Ericsson Mobile Communication and Winbond W77E58 MCU.The realization of the system is analyzed in terms of its hardware structure,software design.Actual results show that the system has reliable communication and better real-time performance.