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设计了基于射频nRF2401和数字温度传感器DS18B20的无线测温报警系统。整个系统由测温发射机和显示、控制接收机组成：首先利用温度传感器DS18B20采集测温信号 ，第二步把温度信号存储在主控芯片中，通过无线射频nRF2401发送到接收机，第三步由接收机控制LCD动态显示，最后接收机控制指示灯和报警器做出相应的反应。形成无线通信、控制等功能于一体的新型系统。系统设计了简明的人机交流按键和指示灯，能够实现实时设置上下限报警温度，有效传输距离达到20-40米，测试表明其便携性与实用性兼备，工作性
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This paper analyzes the vector control theory of asynchronous motors based on the magnetic orientation of motor rotors, and its mathematical model is made. Then the variable frequency vector speed-adjusting experimental system is built with the DSP T
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：介绍了一种利用DSP控制的大容量蓄电池自动充电装置的设计。采用高频开关电源技术，给出了基于数
字信号处理器TMS320LF2407的充电装置控制系统的软、硬件设计。借助Matlab中的Simulink仿真工具，采用
在线模糊自整定技术对充电装置控制系统进行仿真，并将仿真结果应用于DSP控制器中，实现对Fuzzy-PID控
制的Kp、Ki、Kd参数的在线自整定，使充电方式能较好的模拟最佳充电曲线，达到理想效果。理论分析和试验都
表明，该充电装置能够有效地提高蓄电池的充电效率，加快
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本文主要介绍的是采用直接数字频率合成的短波信号发生器，它主要以微电脑控制部分、直接数字频率合成（DDS）部分、数字锁相环频率合成部分、背光液晶显示部分、功率放大部分等组成。该软件系统采用菜单形式进行操作，操作方便明了，增加了很多功能。它通过启动DDS后，把内存缓存区的数据送到DDS后输出相应的频率，并把数据转换为BCD码，送到液晶显示器进行显示。该系统输出稳定度、精度极高，适用于当代的尖端的通信系统和精密的高精度仪器。-This paper describes the use of direct
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析了变速恒频双馈风力发电系统的工作原理。结合风力机特性和双馈发电机特性，说明了变速恒频运行方式下的最优风能捕获策略，并介绍了风力发电系统的滑模变结构控制、自适应控制、鲁棒控制和人工神经网络控制。总结了变速恒频风力发电系统的发展趋势。-Analysis of a Variable Speed Constant Frequency Wind Power Generation System works. Combination of wind turbine characteristics and t
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Abstract— This paper introduces an advanced monitoring and diagnosis system for the detection of incipient electrical faults in
doubly fed induction generators used in wind turbines. In this application, the rotor is supplied by a static converter
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In this paper, in control theory, sliding mode control, or SMC, is a form of variable structure control (VSC). It is a nonlinear control method that alters the dynamics of a nonlinear system by application of a high-frequency switching control. The s
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大功率场合高性能的级联多电平变频调速系统的研究Where high-performance high-power cascaded multilevel Frequency Control System-Where high-performance high-power cascaded multilevel Frequency Control System
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本调频收音机主要由FM/AM收音机芯片CXA1019、PLL且频率合成器BU2614和单片机AT98C51组成。收音机以单片机AT98C51为控制核心, 实现全频搜索、指定频率范围搜索和手动搜索电台 本收音机还使用了数字电位器(X9511)控制音量。采用液晶显示器显示载频和时钟等信息, 大幅度降低了系统的功耗。整机实现3V 电源工作, 采用E2PROM(AT24C04)存储电台, 还增加了立体声解码功能。-Mainly by the FM radio FM/AM radio IC CXA1019
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圆环链中频电源智能控制系统Ring-chain frequency power supply Intelligent Control System-Ring-chain frequency power supply Intelligent Control System
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：针对3-业过程控制中传统PID控制器的不足，介绍了模糊PID控制器的设计方法，将模糊PID
算法应用于汽轮机功频电液调节系统中，并将模糊PID算法与传统PID算法进行了比较-: For 3- business process control, the lack of traditional PID controller, introduced the fuzzy PID controller design method, the fuzzy PID algorithm used in st
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应用于高功率交流变频调速系统开关电源的研究-For high-power switching power supply AC Frequency Control System Research
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本简易电能质量检测装置由单片机控制模块，电源模块，信号变换与处理模块等构成。c8051F020为主控单片机，它能准确的完成同时对一路工频交流电的频率、电压有效值、电流有效值、有功功率、无功功率、功率因素等进行测量。通过软件对输入电压信号进行实时采样。系统调试时，用函数发生器输出正弦电压信号作为交流信号的电压信号输入，此电压信号经自制的移向电路相后代表同一路信号的电路信号输入。-This simple device consists of single-chip power quality det
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The main frequency is an important parameter of
an electrical power system. The frequency can change over a
small range due to generation-load mismatches. Some power
system protection and control applications
The paper presents a
new method
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使用matlab软件实现鲁棒控制技术，对电力系统中电频率控制能很好的实现-Using matlab software robust control technology, electric power system frequency control can achieve good
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This paper proposes the design and implementation of the functional electrical stimulator using the ultra low power microcontroller MSP430 , which restores the functionality of paralyzed portion of human body due to spinal cord injury (SCI) that cons
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This book provides a thorough understanding of the basic principles of power
system frequency behaviour in wide range of operating conditions. It uses simple
frequency response models, control structures and mathematical algorithms to adapt
modern
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This book provides a thorough understanding of the basic principles of power
system frequency behaviour in wide range of operating conditions. It uses simple
frequency response models, control structures and mathematical algorithms to adapt
modern
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Frequency control as a major function of automatic generation control is one of the
important control problems in electric power system design and operation, and is
becoming more significant today because of the increasing size, changing structure,
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Frequency control as a major function of automatic generation control is one of the
important control problems in electric power system design and operation.
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