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随着工业的发展,工业能耗以及成本也是越来越大,工业现场对成本、无线网络的要求也越来越高。本文将介绍一款低功耗无线测温装置设计,该装置基于MSP430单片机,主要有下位机与上位机两个部分。下位机主要功能是通过处理温度传感器的信号测量,将温度数据采用无线方式传送到上位机。待上位机完全接收系统工作参数、温度测量数据并将其显示之后,再将其传送到下位机。这种装置结构简单,功耗也很低,抗干扰能力比较强,使用起来更加方便可靠,能够广泛应用于环境比较复杂的场所以及不适宜采用布线进行温度测量的场所。 相似文献
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一种步进电机驱动器及其控制系统的研究 总被引:2,自引:0,他引:2
本文研究开发了一种步进电机驱动器及其控制系统.该系统以PC机作为上位机,以单片机作为下位机.可使上位机能够可靠地将经过处理的控制指令和参数发送到下位机,保证下位机能够准确、及时地发出控制信号,通过驱动器驱动步进电机工作.同时,上位机检测下住机的各种状态信号,进行诊断和处理. 相似文献
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一台锅炉在工作过程中,要完成诸如上料、温度控制、除渣等工作,当多台锅炉工作需要集中控制百,每台锅炉的各部分的工作都由下位机控制,下位机除接受本地控制外,还需要将自己的工作状态回报给上位机,接受上位机指令,实现远程控制,以一台锅炉除渣下位机的控制为例,说明除渣下位机如何完成自己本身的工作和接受上位机指令,从而构成计算机的集散控制系统。 相似文献
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采用Allen-Brdley公司制造生产的ControlLogix5550系列PLC和与其配套的工控组态软件,实现对水泥熟料煅烧生产过程的自动监控.系统采用两级DCS控制方式,下位机负责完成数据的采集、处理和向上位机进行信息传送,并接受上位机指令去完成各种过程控制等任务,上位机负责完成工艺过程的监视、操作、控制及PID参数的调整,并完成数据处理及各种打印功能.该控制系统使用效果良好,功能稳定可靠. 相似文献
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详细介绍了一种基于虚拟仪器(Lab Windows/CVl)平台的温室环境控制系统的设计方法,并从硬件、软件上加以实现。上位机PC通过串口向下位机ATMEGA8单片机传送指令,下位机按要求采集温室系统的相关数据,上传给上位机,送数据库保存和处理。 相似文献
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温度指标在许多工程项目中是不可或缺的重要参数.针对这一要求提出的多通道无线温度测量系统,采用多个单总线数字式温度传感器DS18B20作为测温节点,PIC16F877A单片机作为下位机微处理器来控制多路温度值的采集,并通过无线收发模块PTR8000进行传输,最后通过RS232串口将数据传送到上位机电脑.实验证明,该系统解决了在复杂环境下温度采集和获取的问题,具有较高的精度和很好的推广应用前景. 相似文献
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Control and synchronization of chaotic systems using a novel indirect model reference fuzzy controller 总被引:1,自引:1,他引:0
Mojtaba Ahmadieh Khanesar Mohammad Teshnehlab Okyay Kaynak 《Soft Computing - A Fusion of Foundations, Methodologies and Applications》2012,16(7):1253-1265
This paper presents a robust indirect model reference fuzzy control scheme for control and synchronization of chaotic nonlinear systems subject to uncertainties and external disturbances. The chaotic system with disturbance is modeled as a Takagi–Sugeno fuzzy system. Using a Lyapunov function, stable adaptation laws for the estimation of the parameters of the Takagi–Sugeno fuzzy model are derived as well as what the control signal should be to compensate for the uncertainties. The synchronization of chaotic systems is also considered in the paper. It is shown that by the use of an appropriate reference signal, it is possible to make the reference model follow the master chaotic system. Then, using the proposed model reference fuzzy controller, it is possible to force the slave to act as the reference system. In this way, the chaotic master and the slave systems are synchronized. It is shown that not only can the initial values of the master and the slave be different, but also there can be parametric differences between them. The proposed control scheme is simulated on the control and the synchronization of Duffing oscillators and Genesio–Tesi systems. 相似文献
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In this paper, a fuzzy force control framework is proposed for dual-industrial robot systems. The master/slave control method is used in dual-robot systems. Two MITSUBISHI MELFA RV-M1 industrial robots, one is equipped with an BL Force/Torque sensor and the other is not, are utilized for implementing the dual-arm system. In order to adapt various stiffness of the holding object, an adaptable fuzzy force control scheme has been proposed to improve the performance. The ability of the adaptable force control system is achieved by tuning the scaling factor of the fuzzy logic controller. Successful experiments are carried out for the dual-robot system handling an object. 相似文献
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主要研究了组态技术在监控系统中的某些应用及其优越性,以及如何用纯软件的办法实现主备机切换,同时用实例来说明该技术在实践中的成功应用,并提出了系统的进一步发展方向。 相似文献
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W. P. M. H. Heemels R. J. A. Gorter A. van Zijl P. P. J. van den Bosch S. Weiland W. H. A. Hendrix M. R. Vonder 《Control Engineering Practice》1999,7(12):101-1482
The synchronization between two electrical motors (master and slave) is studied. To reduce the costs of the master–slave combination, the slave motor is mounted with a very low-resolution encoder (one pulse per revolution). Since the position measurements are asynchronous in time, standard control and analysis techniques are not applicable. Two methods are proposed to deal with these cheap, low-resolution encoders: the hybrid and the asynchronous control scheme. The presented controllers are successfully tested on a real industrial master-multi-slave system as is used for mailing machines. 相似文献
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Sarah Hamel 《国际通用系统杂志》2016,45(6):689-710
In this paper, a modified generalized function projective synchronization scheme for a class of master–slave chaotic systems subject to dynamic disturbances and input nonlinearities (dead-zone and sector nonlinearities) is investigated. This synchronization system can be seen as a generalization of many existing projective synchronization schemes (namely the function projective synchronization, the modified projective synchronization and so on), in the sense that the master system has a scaling function matrix and the slave system has a scaling factor matrix. To practically achieve this generalized function synchronization, an adaptive fuzzy variable-structure control system is designed. The fuzzy systems are used to appropriately approximate the uncertain nonlinear functions. A Lyapunov approach is employed to prove the boundedness of all signals of the closed-loop control system as well as the exponential convergence of the synchronization errors to an adjustable region. Simulations results are presented to illustrate the effectiveness of the proposed generalized function PS scheme. 相似文献
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本系统采用模块化设计思想,以89C55单片机为核心,设计出了帆板角度PID控制系统。帆板角度PID控制系统是由主机和从机组成的多机控制系统,主机主要完成帆板角度的PID闭环控制、角度的设定、各类显示及与从机的通讯等功能,从机主要完成帆板角度的实时显示和与主机的通讯等功能,帆板角度控制系统经PID参数整定后控制效果比较理想。 相似文献
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结合模糊控制理论,针对雷达的交流伺服系统,提出了随动系统模糊控制器的设计方法。实际结果表明,该模糊控制器作用于随动系统时,在跟踪性能及控制的鲁棒性等方面均取得了令人满意的效果。 相似文献