A Study of Application of a New Non-Linear Load Model in LFC

A decentralized load frequency control(LFC)of power system was designedwith the help of the overlapping information methed of the large-seale system theory. The effects ofa non-linear load model to load frequency control were discussed. And got some valued reference concluson.     

仓库鼠类综合防治技术的研究

对广东省５个单位的仓库鼠类进行了调查，结果表明，主要为褐家鼠（６２．９％～８２．４％）和小家鼠（１７．７％～３７．６％），根据鼠类特性，从控制鼠类密度改变鼠类行为，用化学和物理方法，以及仓房设施改造等方面着手，进行防治仓库鼠类的试验研究。     

A FRACTURE MECHANICS ANALYSIS OF FRACTURE PLANE CONTROL IN FRACTURE CONTROL BLASTING

A procedure of fracture control blasting for achieving directional breaking of rocks by blasting is presented. The criterion for initiating of radial cracks in borehole wall under dynamic load and the method for determining the permissible rang of initial gas pressure (p0) in the charge cavity are developed .and the branching of radial cracks and the effeets of the pressure (p0) and blasthole geometry (R0.a.L3) on final dimensions of directed cracks are studied .with Fracture Mechanics analysis in all three aspects of fracture process including crack initiation .crack propagation and crack arrest.     

Development of Static Characteristic Automatic Testing System About Brake Valves of Automobile

This paper describes a PC controlled brake valve automatic testing system which uses industrial control(computer) and Advantech powerful date acquition card PCI-1710L,and chooses Advantech PCI-1730 as the I/O card,(uses) FUJI servo systrm as the transmission mechanism.The system monitor the brake valve's quality based on analyseing the static characteristics of the brake valve.The authors also introduce the principle and structure of the system,hardware and software design process.The system works well in practice.     

Temperature Fuzzy PID Control for Variable Air Volume System

Fuzzy PID controller was applied in variable air volume system. The task was to control the temperature of supply air and the temperature of air conditioned room (the return air temperature) close to their respective targets. The fuzzy PID control system of supply air temperature and return air temperature was designed respectively. The supply air temperature was controlled through adjusting the valve opening of chilled water. And the indoor temperature was controlled through adjusting the rotational speed of variable frequency ventilator. The supply air temperature and the indoor temperature (return air temperature) were controlled online by fuzzy PID controller. Thus, it was shown that the design of fuzzy PID controller was reasonable and the effect of fuzzy PID control was well.     

蒜泥的防绿变研究

根据蒜泥绿变的机理,通过正交试验筛选出其中最佳的防绿变组合。结果表明,8.0%的色拉油、1.0%的抗坏血酸、4%的食盐、1.0%的半胱氨酸和pH值调整为4.0则可以达到较好的防绿效果。蒜酶与大蒜分离,食用时混合可以有利于风味的保持。     

不同防治方法对设施黄瓜根结线虫的防治效果

为探究不同处理方法对黄瓜根结线虫病的防治效果,以当地主栽的黄瓜品种作为试验材料进行设施大棚试验,比较夏季高温闷棚、施用解淀粉芽孢杆菌B1619和“夏季高温闷棚+施用解淀粉芽孢杆菌B1619”综合防治3种方法对黄瓜根结线虫的防治效果。结果表明,物理和生物综合防治方法的防治效果最好,达到85.17%。试验结果可为宿迁地区设施蔬菜根结线虫病的绿色防治提供数据参考。     

植物性杀虫剂辣根素对天牛的防治研究

为明确辣根素对天牛的熏蒸致死作用,在田间研究了辣根素不同剂量对天牛幼虫的熏蒸作用、对天牛熏蒸的致死时间、天牛蛀道以及封口的处理方式。结果表明,利用辣根素熏蒸防治天牛,将蛀道口处清理干净,以0.5~1.0 mL/孔的使用剂量进行处理,蛀道口及排粪孔用高岭土饱和盐水泥进行封闭,外用地膜包扎,在处理1天后对天牛可以达到96.7%以上的防治效果。辣根素是一种非常有效的防治天牛的植物性杀虫剂。     

统计过程控制结合HACCP对苦荞饭中黄曲霉毒素防控的研究

应用统计过程控制（SPC）技术结合危害分析与关键控制点（HACCP）对苦荞饭生产过程中黄曲霉毒素污染进行有效防控,采用酶联免疫法测定黄曲霉毒素B1含量。以贵州某食品有限公司苦荞生产车间为例,确定生产过程中黄曲霉毒素污染的关键控制点为原料采收（CCP1）和加水造粒（CCP2）,对这两个关键控制点进行SPC监控,通过控制图法分析确定影响质量波动的因素,提出相应的控制方法和控制参数,从原料、设备、仓库、人员4个方面提出了黄曲霉毒素的控制方法,并对控制效果进行评估。结果表明：SPC作为苦荞饭生产过程中黄曲霉毒素污染控制工具,原料采收阶段过程能力指数Cpk由0.28提升为1.62,加水造粒阶段过程能力指数Cpk由0.16提升为1.79,工序能力均提高到一级,不合格产品数量明显降低。     

Parameter Simulation on the Control Strategy for a Parallel Hybrid Electric Vehicle by CRUISE

The purpose of a parallel hybrid electric vehicle(PHEV) is for the best energy distribution between internal-combustion engine(ICE) and electric motor though the appropriate control strategy.It can not only keep the advantage of the ultra-low emission of electric vehicles(EV),but also take advantages of the hyperbaric energy of ICE.Simulation model for PHEV is built based on CRUISE,an auxiliary control strategy is designed,and then parameter simulation study on the control strategy is performed.The simulation results show that according to the different control requirements,the vehicle performance can be improved by adjusting!the corresponding control parameters.     

Research of UD2UU with human simulated intelligent control for a double inverted pendulum

Double pendulum has four equilibrium points (down down, down up, up down, and up up). Twelve transfer actions and eight spin actions can be formed with these equilibrium points. One of the transfer action, up down to up up (UD2UU) with human simulated intelligent control (HSIC) theory based on sensor motor intelligent schema is studied. Control system designed by HSIC has following advantages: hierarchic control architecture with multi controller and multi control mode; hybrid control law combining close loop and open loop control as well as positive feedback and negative feedback control; associating schema based on characteristic model which takes charge of switch between each control mode. The design process of HSIC controller for UD2UU is discussed. The real time control results demonstrate the validation of the proposed theory and method.     

A radial basis function neural network based self adapting predictive decoupling control system for gas collector pressure in coke ovens

Pressure is measured at different levels in the loop layer because self adapting predictive decoupling control systems are strongly coupled, disturbed, and non linear and there is a long time delay for gas collector pressure systems in coke ovens. By combing the traditional neural network control and proportional integral differential(PID) controllers based on radial basis function(RBF) neural network identification, the gas collector pressure is ensured to reach the desired technology range. The prediction model of an RBF neural network is used for advanced prediction of the actual output pressure to overcome delays in general gas collection. The simulation results and application indicate that the method can obtain ideal control results.     

石河子地区棉铃虫发生规律及药剂防治技术

近年来由于种植结构和灌溉方式的调整和气候的变化,引起棉铃虫发生规律的改变。通过3年定点、定量、定时用杀虫灯、杨枝把、性诱剂诱集,以及喷雾法进行化学药剂田间药效比较,研究了棉铃虫在石河子的发生规律,比较了3种诱集技术对棉铃虫的诱集效果,筛选了适宜本地大田使用的药剂,为当地棉铃虫及时防治提供理论依据。结果表明：在石河子地区,越冬代成虫羽化始期在5月上旬,高峰期在5月下旬。一代成虫6月中旬开始羽化,羽化高峰期为6月22日—7月2日,二代成虫羽化期在7月中下旬,羽化高峰期7月22日—8月3日。通过3种诱集法比较,越冬代性诱剂监测、1代成虫用性诱剂监测用杨枝把防治,2代成虫用杨枝把监测,杨枝把和灯光诱集防治效果更好。田间化学药剂比较试验结果显示美除及NPV等生物制剂对棉铃虫防治效果较好。     

花生田蛴螬药剂防治技术研究

选用不同杀虫剂，不同防治时期，施药方法和次数防治花生蛴螬的田间试验结果表明，吡虫啉可湿性粉剂340g/hm^2、辛硫磷乳油1875g/hm^2，米乐尔颗粒剂2475g/hm^2、特丁磷颗粒剂1875g/hm^2和复配制制辛倍乳油3000g/hm^2是防治花生蛴螬的理想药剂，播种期和花期各防治1次，防效达81．37％以上。播种期防治效果＜花期防治效果＜播种期防治＋花期防治的效果。     

文心兰花期调控技术研究

对蓝西、蜜糖、百万金币、红猫、巴黎文心和蜘蛛文心共6个品种的文心兰采用不同的光照、温度、施肥配比和植物生长调节剂处理,发现最适于花芽萌发的光照强度为19000 lx,温度条件为（日温～夜温）28～17℃,施肥配比为N：P：K =10：30：20,同时满足这些条件进行催花,蜜糖、百万金币和巴黎文心的抽花率可达70%以上,蓝西、红猫分别为55%和66%。蜘蛛文心的花芽分化必须经过较低温处理,经（日温～夜温）25～15℃处理60天,抽花率达到72.3%。6-BA处理对参试文心兰的抽花率未见明显影响。     

中华甲虫蒲螨和管氏肿腿蜂联合控制双条杉天牛初探

为探索2种寄生性天敌联合应用于害虫防治的可行性，为生物防治提供天敌利用的新思路，本研究选取中华甲虫蒲螨和管氏肿腿蜂开展同时作用和先后作用于双条杉天牛3龄幼虫的试验。研究发现：（1）中华甲虫蒲螨和双条杉天牛幼虫联合作用于双条杉天牛幼虫时，寄生率和寄生成功率均达到100%。（2）单种天敌寄生时，育出的中华甲虫蒲螨膨腹体和羽化成功的管氏肿腿蜂子代数量均在70以上；但当2种天敌同时寄生或者先后寄生时，各自育出的子代数量均显著下降。因此在生产上建议用中华甲虫蒲螨和管氏肿腿蜂防治双条杉天牛的幼虫时，释放中华甲虫蒲螨约10天后再释放肿腿蜂，降低两者竞争同种寄主资源的概率，既能避开天敌竞争又可以让肿腿蜂去防控较高龄期的靶标害虫。研究结果可为多种天敌联合防控钻蛀性害虫提供参考。     

Technologies of Intelligent Vehicle in Intelligent Transportation System (ITS)

Intelligent Transportation System (ITS) is the most effective method to solve the modern traffic problems. Intelligent vehicle plays a very important role on ITS, and it influences the success of ITS directly. Intelligent Transportation System (ITS) is briefly introduced. Then it is given that advanced vehicle control system and electrics stability program (ESP) in the key technology of intelligent transportation system. The control algorithm for vehicle movement is discussed and the test result is given.     

尿洗合剂对菜蚜的防治作用

菜蚜是十字花科蔬菜的重要害虫,包括桃蚜和萝卜蚜等。无公害蔬菜生产必须解决污染问题,其中最常见的是农药污染。蔬菜农药残留量超标,不仅威胁广大消费者的身体健康,而且直接影响我国蔬菜在国际市场上的竞争力 [2]。因此选用无污染无残留的农药进行防治蔬菜害虫是蔬菜生产的重中之重。目前生产上已经在使用尿洗合剂防治菜蚜。尿洗合剂是一种经济实用、安全无毒的治菜蚜药剂[3]。尿洗合剂即用尿素与洗衣粉按比例配置的水溶液,对菜蚜有较强的杀伤作用,防治效果可达95%以上。因为尿素具有破坏昆虫几丁质的作用, 而洗衣粉中含有表面活性剂烷基苯黄酸钠,能使昆虫体表蜡层溶解, 接触虫体时可形成不透水、不透气的一层薄膜堵塞虫体的气孔,使其窒息而死,尿素又有根外追肥的作用[4]。尿洗合剂适用于蔬菜及其他作物,简单易得,符合安全、不污染环境等无公害要求[1],在蚜虫大发生年应用是一种良好的除虫增产应急措施。鉴于此,本文研究了尿洗合剂对菜蚜的防治作用,为无公害蔬菜生产提供依据。     

Effect of chitin on the antagonistic activity of Rhodosporidium paludigenum against Penicillium expansum in apple fruit

This study aimed to investigate the effect of chitin on the antagonistic activity of Rhodosporidium paludigenum against Penicillium expansum, the cause of blue mold in apple fruit, and the possible mechanisms involved. Our results showed that biocontrol efficacy and population growth of R. paludigenum were greatly enhanced when it was harvested from nutrient yeast dextrose with added chitin (NYCB) medium compared with that harvested from nutrient yeast dextrose (NYDB) medium. The ability of R. paludigenum produced in NYCB to induce resistance to blue mold in apple fruit was significantly enhanced. The enhanced disease control efficacy was correlated with higher levels of polyphenoloxidase (PPO) and superoxide dismutase (SOD) activities in apple fruit treated with R. paludigenum. Moreover, the SOD and catalase (CAT) activities of R. paludigenum were stimulated by cultivating in NYCB, while malondialdehyde (MDA) accumulation in the yeast cells was suppressed. These results indicated that adding chitin to normal media might be an effective method to improve the antagonistic activity of R. paludigenum and the active oxygen metabolism of R. paludigenum might be closely related to the biocontrol activity of the yeast.     

间(套)作对棉田病虫害的防控效应及其风险控制

棉花是病虫害发生最为严重的大田作物之一,近年来基于棉田间作套种的棉花病虫害生态治理成为研究的热点。合理的间作套种可以通过改变农田的生态结构和环境条件,提高天敌的种群数量,降低或抑制害虫的种群密度,进而起到有效控制病虫害的作用,是棉花病虫害防控的一条重要途径。同时,棉田间作套种控制病虫害也存在一定的局限性,不合理的间作套种更是存在提高用工投入、增加病虫防治难度、加重病虫为害等多种风险。评述了棉田间作套种对防控棉花病虫害的效应及其机制,总结提出了棉田间作套种存在的风险和防控途径,对今后应用间作套种生态治理棉花病虫害的前景和研究方向作了展望。