火电厂外围设备系统集中监控改造的研究

对火力发电厂的外围设备系统由就地控制改造为集中控制进行研究，分析外围设备控制进行这种改造的可行性和必要性，并介绍了日照电厂外围设备系统进行集中监控改造的硬件配置、实施过程中的经验和体会。     

变频器在起重机行业中的应用

本文简要个绍了起重机控制的现状及存在的问题，以我公司采用ABB变频器为某公司起重机变频调速系统改造为例，介绍了设备现状、改造要求，改造方案、控制原理及应当注意的问题、系统改造后的效果，最后对在起重机行业使用变频调速系统的优点进行了总结。     

用电脑采集卡控制机械飞梭绣花机

利用压电陶瓷偏转片和数据采集卡，把旧式机械飞梭绣花机改造为电脑控制。讨论了改造的难点和解决方法－电压陶瓷偏转片。结合具体实例，阐述了整个改造的软，硬件设计过程。     

线切割机的程序控制实现和优化

本文介绍了数控线切割机床的程序控制的改造和优化、实现的基本思路，从硬件方面着手说明控制改造和优化的原理和技术。新的控制系统采用了目前较新型的工业计算机，用通用型板卡控制步进电机，增加了多项状态监测，系统的功能有一定的增强。     

FCC装置先进控制发展概况

目前在许多炼厂的FCC改造工程中应用了DCS，但其运行功能主要限于基本调节控制，DCS的先进功能没有得到充分利用，改进DCS的运行和效益一个重要途径是开发和实现先进控制方法。本文介绍了在改造FCCO过程中所使用先进控制技术。     

热电联产压水堆核电机组的控制方案研究

核能热电联产是实现“双碳”目标的重要方法。核能热电联产改造后，供需侧能量平衡关系发生了变化，需要针对热电联产改造后压水堆核电机组开展堆机协调控制方案的研究。首先，以大亚湾900 MW核电机组为研究对象，基于最佳估算程序RELAP5和仿真平台3KeyMaster建立了热电联产模型。热电联产形式包括主蒸汽集管抽汽、中间抽汽和背压机排汽。接着，以主蒸汽集管抽汽为例，通过典型扰动的动态特性分析并验证了所建立的模型。然后，提出了将总蒸汽流量折算为等效负荷的方法，对反应堆功率控制中冷却剂平均温度控制系统进行改造。最后，对设计的控制系统改造方案进行了验证。验证结果表明，该方案能够满足反应堆核功率、电功率和供能热负荷协调控制的要求。所设计的控制改造方案为热电联产压水堆核电机组的反应堆功率控制提供了参考。     

微机在均热炉烧钢过程中的应用

本文介绍了初轧厂均热炉改造后炉温、配比和炉压等调节系统的控制情况，重点介绍了“偏差比例型交叉制约网络的过程及废气残氧控制的滞后补偿原理，为进一步推广均热炉改造微机化提供了经验。     

30万吨乙烯装置燃料气供应系统控制方案改造

本文介绍了扬子石化公司３０万吨乙燃料气供应系统控制方案的改造，对原控制方案的原理和存在问题进行了理论上的分析，提出了改造实施方案。     

DCS在制氧行业的应用

本文主要介绍如何利用制氧机组搬迁改造机会用先进的DCS技术，改造原系统，落实工艺控制及其实现，并详细讨论了设计选型原则及具体实现，该系统投入方便操作，提高了整个系统的控制水平。     

PLC在燃烧炉点火控制中的应用

本文介绍了应用西门子S7—200系列PLC对燃烧炉点火控制系统进行改造的设计。在PLC中编写控制程序，改造燃烧炉的电气控制系统，将燃烧火焰安全控制器的继电器控制方式改为PLC控制方式。     

基于多重相关状态采样的多元EWMA控制图

为提高控制图的监测效率,提出了一种基于多重相关状态采样的多元EWMA控制图,并利用改进后的马尔可夫链方法计算控制图的平均运行长度。根据不同参数下控制图的平均运行长度,分析了控制图在失控和受控状态下的性能表现,并与其它多元EWMA控制图进行比较。模拟结果表明,该控制图具有良好的监测能力。最后用一组模拟数据来说明该方法的使用。     

Lateral control strategy for autonomous steering of Ackerman-like vehicles

This paper presents the results of a lateral control strategy that has been applied to the problem of steering an autonomous vehicle using vision. The lateral control law has been designed for any kind of vehicle presenting the Ackerman kinematic model, accounting for the vehicle velocity as a crucial parameter for adapting the steering control response. This makes the control strategy suitable for either low or high speed vehicles. The stability of the control law has been analytically proved, and experimentally tested by autonomously steering Babieca, a Citro n Berlingo prototype vehicle.     

一种实现控件与多语言文本动态绑定的方法

现代应用中大多已有进行多语言切换的需求,但对于控件本身文本显示信息,要实现多语言实时切换还有一些难度,文中提出一种能够根据用户的选择将控件与显示文本进行动态绑定显示的方法,通过对控件文本信息的多语言实时切换。该方法具有执行效率较高、定制选择灵活方便、性能稳定可靠、适用范围较为广泛的特点。该方法已在基于CAR构件的Elastos操作系统上实现并运用于智能手机应用。     

Automatic control of casting speed in ingot casting

A microwave casting speed meter and the automatic casting speed control system that uses it have been developed for the bottom pouring process of steel ingots. The microwave meter is based on the Doppler radar technique, and a circuit of period measurement and reciprocal calculation has been developed to make its response time faster. Also it has a function to measure cast height. The automatic system can be regarded as a sampled-data system with an adaptive control function. Outlines of the microwave meter, the control circuit and the method of adaptive control are presented. The relationship of the crack appearance to the casting speed is studied, and programmed patterns of the casting speed have been prepared to reduce cracking. The programmed ‘pattern casting’ has been achieved by the automatic control system, and the surface quality of the ingot has been improved.     

Power control and capacity of spread spectrum wireless networks

Transmit power control is a central technique for resource allocation and interference management in spread-spectrum wireless networks. With the increasing popularity of spread-spectrum as a multiple access technique, there has been significant research in the area in recent years. While power control has been considered traditionally as a means to counteract the harmful effect of channel fading, the more general emerging view is that it is a flexible mechanism to provide quality of service to individual users. In this paper, we will review the main threads of ideas and results in the recent development of this area, with a bias towards issues that have been the focus of our own research. For different receivers of varying complexity, we study both questions about optimal power control as well as the problem of characterizing the resulting network capacity. Although spread-spectrum communications has been traditionally viewed as a physical-layer subject, we argue that by suitable abstraction, many control and optimization problems with interesting structure can be formulated at the network layer.     

基于CAN总线的运动控制系统的设计

为同时实现运动控制系统的开放式通信和分布式控制,将CAN总线应用到系统各组成部分的通信控制中;以PC机为上位机,80C196KC单片机为智能节点的核心,设计了CAN适配卡及各智能节点,进而构成总线式运动控制系统;该系统是一个具有通用性的基于CAN总线的工业测控系统;该系统与传统的控制系统相比更易于改型和扩充,目前已应用于实际工程控制中。     

一种实现控件与多语言文本动态绑定的方法

现代应用中大多已有进行多语言切换的需求,但对于控件本身文本显示信息,要实现多语言实时切换还有一些难度,文中提出一种能够根据用户的选择将控件与显示文本进行动态绑定显示的方法,通过对控件文本信息的多语言实时切换.该方法具有执行效率较高、定制选择灵活方便、性能稳定可靠、适用范围较为广泛的特点.该方法已在基于CAR构件的Elastos操作系统上实现并运用于智能手机应用.     

四旋翼无人机控制系统设计

目前无人机已广泛应用到各行各业,其中无人机的稳定控制一直是研究的核心。在飞控系统中各参数的选择对无人机的稳定控制有着至关重要的作用。以STM32微控制器为核心,利用MPU9250采集四旋翼无人机的姿态数据,配合卡尔曼滤波算法对传感器所采集的数据进行融合滤波,从而实现精准的姿态测量。根据飞行姿态结合PID控制算法,完成对四旋翼无人机飞行姿态的控制。     

Design and implementation of a hybrid fuzzy logic controller for a quadrotor VTOL vehicle

Helicopters have generated considerable interest in both the control community due to their complex dynamics, and in military community because of their advantages over regular aerial vehicles. In this paper, we present the modeling and control of a four rotor vertical take-off and landing (VTOL) unmanned air vehicle known as quadrotor aircraft. This model has been generated using Newton-Euler equations. In order to control the helicopter, classical PD (proportional derivative) and Hybrid Fuzzy PD controllers have been designed. Although fuzzy control of various dynamical systems has been presented in literature, application of this technology to quadrotor helicopter control is quite new. A quadrotor helicopter has nonlinear characteristics where classical control methods are not adequate especially when there are time delays, disturbances and nonlinear vehicle dynamics. On the other hand, Fuzzy control is nonlinear and it is thus suitable for nonlinear system control. Matlab Simulink has been used to test, analyze and compare the performance of the controllers in simulations. For the evaluation of the autonomous flight controllers, some experiments were also performed. For this purpose, an experimental test stand has been designed and manufactured. This study showed that although, both of the classical PD and the Fuzzy PD controllers can control the system properly, the Fuzzy PD controllers performed slightly better than the classical PD controllers, and have benefits such as better disturbance rejection, ease of building the controllers.     

被动式电液伺服加载系统控制的方法研究

针对被动式电液伺服加载系统控制过程中的非线性,参数的时变性以及位置扰动引起的多余力等问题,提出了CMAC- PID并行的控制算法;建立系统的非线性数学模型,采用现代控制理论与经典控制理论相结合的方法对系统进行优化设计;利用PID控制器实现反馈控制,并为CMAC网络提供导师信号,CMAC神经网络进行前馈控制,减小多余力、参数时变性对系统带来的干扰,实现非线性逼近;仿真结果表明:CMAC- PID算法可将多余力控制在常规控制的22.5％,其跟踪精度高,抗干扰能力、鲁棒性更强,能优化系统的性能,为实际应用提供了参考.