For the strong external interference and system nonlinearity and other characteristics in mineral inverter system, we propose a simple auto disturbance rejection controller. The dynamic observation of the uncertain factors and external interference in the system model can be made possible by the use of the extended state observer of the auto disturbances rejection so as to improve the system adaptability to the interference. The simulation tests show that the controller has. Less overshoot, more adjustable transience and wider selection domain in the stable range to the controlling parameters, meanwhile, the controller has greater adaptability to the inverter power system.

Aiming at the swith transition phenomenon near the criterion of switching FUZZY-PID control,a strategy of switching FUZZY-PID combined control based on CMAC network is presented.The control method of the switching FUZZY PID control,and the parallel of CMAC-PID and algorithm of the control are expounded in this paper.An AC motor is served as the controlled object.The results of simulation show that the control method has a fast response and short learning time and self-adaptive property.And also the problem of switch transition is solved very well.

According to the characteristics of digital signal processing course,and the requirement of program of excellent engineer training,closely rounding the core of students can leam and implement,meet the need of business,and adapt to the social development.In the process of teaching digital signal processing,introduced the teaching mode of project oriented.In order to cultivate engineering awareness,teamwork,collaboration capabilities, and presentation skills of students,strengthen the core competitiveness of students to employ,lay a foundation to become a distinguished engineer in the future.Teaching practice showed that,this model can achieve better teaching effect,and helpful to students in employment.

To improve the power factor of inverter or UPS and restrain the input current harmonic, a one-cycle control technology is applied to a single inductor three-level bridgeless boost power factor correction circuit in this paper, analyzing the single cycle control mode and principle of charging and discharging, building the simulink model of one-cycle controlling single-inductor three-level bridgeless boost circuit. The results show that the one-cycle control can restrain the harmonic of the input current, the total harmonic distortion rate is 0.1, and the input power factor is 0.995.

Aimed at improving the power factor of inverter or uninterrupted power supply control system and inhibiting input current harmonic,this paper introduces the application of one-cycle control strategy to a novel single inductor three-level bridgeless boost power factor correction,the analysis of the principle of charging and discharging and one-cycle control strategy,and the development of the simulation mode of single inductor three-level bridgeless boost power factor correction controlled by one-cycle.The results show that one-cycle control can inhibit the input current harmonic,giving a total harmonic distortion rate of 0.1,and the input power factor of 0.995.

有效循环血容量锐减导致的急性微循环灌注量减少(微循环障碍)是创伤失血性休克的根本原因,包括创伤后大量失血、复杂性骨折、挤压伤、大血管破裂以及广泛软组织损伤后血浆大量外渗等.创伤患者失血量达30%就可危及生命.32.6% ～59.5%的伤员死于失血性休克[1].因此,快速建立有效的输液途径进行复苏是抢救创伤失血性休克的关键.吉林大学中日联谊医院对32例创伤失血性休克患者在救治过程中行骨髓腔穿刺输液,现报道如下.

文章结合多年的电子类专业英语学习和教学工作的经验,从电子类专业英语的学科定位,教材的选择、教学计划的制定,教学模式、教学方法和考核方式的改革和创新,以及教师综合素质的提高几个方面,对如何提高电子类专业英语教学质量进行了探讨。

The speed of multiplication on elliptic curves is a key to improving performance of Elliptic Curve Cryptography（ECC）. This paper analyzes the non-adjacent form （NAF） algorithm of the width w and the polynomial multiplication algorithm and proposes a multiplication algorithm on binary field based on NAFw. This algorithm reduces the XOR operation in the frequency and the number of precomputation, decreasing the computation time and saving storage space. The modeling and simulation results show that its average efficiency is approximate 14.7% faster than the comb polynomial multiplication and it only needs 2w-1- 1 precomputation, Based on the number of precomputation to storage and time consumption, w = 4 is better choice to the width of the window.

作为医院的急诊科室,呼吸机是必备的设备之一。尤其是对于抢救工作,几乎都会用到呼吸机。因此对于呼吸机的正确使用是急诊科室医护人员都需要掌握的一项技能。呼吸机使用频率虽高,但是抢救成功的概率却比较低,特别是重症呼衰患者和需要心肺复苏的患者。对于呼吸机抢救病重患者成功率低的问题不仅仅存在于小型医院,一些大型综合医院同样存在此问题。造成此现象的原因很多,除了患者自身原因外,还有呼吸机使用不合理;气管切开、插管时机没掌握好;护理工作不专业等。根据多年来的临床实践和归纳总结,探讨呼吸机对重症病人保护肺通气的策略和应用,旨在提高机械通气在抢救重症患者的临床疗效。

目的讨论影响急诊科心肺复苏效果的因素。方法查阅并分析我院2009年1月~2011年12月期间内进行的115例心肺复苏。其中2009年和2010年的患者抢救方式为2000AHA心肺复苏指南,此期间病例定为对照组;2011年患者抢救方式按照2005AHA心肺复苏指南,此期间病例定为观察组。对两组过程中影响复苏效果的因素进行回顾性分析。结果对照组77例,成功16例,成功率为21%;观察组38例,成功15例,成功率为39%。两组相比差异明显(P<0.05)。结论新的指南中提出的除颤后立即按压、快速心脏按压、应用纳洛酮及缩短判断时间等,都能够有利提高心肺复苏成功率。

头外伤后出现的颅内出血(PHI)是指经过CT或手术证明的颅内出血病灶扩大或者出现新的出血病灶。这会导致患者病情不断加重,如果不能及时的诊断并采取有效措施,很可能危急患者生命。

The article discusses the current employment situation and the employing demand,analyzes the characteristic and deficiency of applied talents training.In order to comply with the current employment situation,the tutor system is applied to the training of application-oriented talents,and have achieved good results,it not only to enhance the employment rate,raising the rate of professional counterparts,the tutorial system has become an effective way to improve the employment rate,the two promote each other,can cultivate more qualified talents.

Aiming at the phenomenon that the mining roof fall accident causes personal injury and property damage,this paper designs a smart wireless monitoring system,real-time monitoring the roof pressure and achieving the control to the coal winning machine and the hydraulic support in the underground.

近些年来,在临床工作中,尤其是在严重创伤或急危重症患者的救治过程中,简单、安全、有效、快速地建立输注通道,直接关系到急诊救治的成功与否.当传统的静脉输注通道变得困难或不可能时,骨髓腔内(Intraosseous,IO)输注技术重新引起了人们的兴趣和关注.该项技术能迅速、可靠地建立输液通道,并且不影响心肺复苏术的实施,为急诊急危重症患者的抢救提供了新的方法,有效的提高了休克抢救及心肺复苏的成功率.

多发伤是一种严重危害人们生命安全的急诊科常见病。本论文通过对吉林大学中日联谊医院急诊1 500例多发伤伤者的调查分析,旨在探索多发伤的致伤相关因素的分布特征以及相互影响因素,为多发伤流行病学调查研究以及对地区性的多发伤的防

针对晶闸管中频电源的降耗节能与谐波治理,提出改进措施,并给出了具体的电路设计。实践证明,设备运行达到了预期值,节能效果好,能最大限度地抑制谐波。

Objective To observe the effect of improved venous puncture method and provide basis for popularizing the method which is rapid, painless and of less trauma. Methods According to single-blind random method, 2 132 patients undergone venous puncture treatment in the emergency department of our hospital from August 2008 to August 2009 were selected and divided into two groups: improved group ( 1 066 cases) and traditional group( 1 066 cases). Observed the effect of two groups. Results Improved method was superior to traditional method in pain easing, and there was statistical difference between the two groups (Z = 21.95 ,P ＜0.01 ). Improved method could increase puncture success ratio, with statistical significance as compared to traditional method ( x2 =36.61 ,P ＜0.01 ). Also, zhe former had more rapid venous return ( u = 196. 50,P ＜0. 01 ) and less incidence of bleeding of penetration points and subcutaneous ecchymosis after needle withdrawing ( x2 = 11.76 ,P ＜ 0. 01 ) than the latter. Conclusions Improved puncture method is of less pain and higher puncture success ratio and is superior to the traditional method.

Aimed at overcoming the limit by the integration constant RC on the output of conventional current detection,this paper proposes a pipelining dual integration current detection method designed for MCU of the Smart Battery systems.The verification of the modules of the circuit is obtained by SMIC 0.18 μm standard CMOS technology and with the EDA tools of Spectre and Spectre Verilog.With the reference voltage of 0.3 V and the sensitive resistor of 30 mΩ,the final detection current is in the range of 40 mA ～10 A.The two-stage pipelining gives twice as much detection speed as the conventional method.Experimental results show that this method,independent of RC and with a higher detection rate and precision,is capable of the real-time detection of current.

Aimed at seeking replacement of generalized frequency response function(GFRF) which involves multi-dimensional transformation leading to difficult solution as in the case of characterizing the nonlinear system,this paper introduces the relationship expression of multi-dimensional kernel function based on Vandermode matrix and symbolic operation by MATLAB and the expression of the complex higher order kernel function into one-dimensional numerical solution form by substituting into the frequency domain sampling value of input and output.The simulation result shows that this method which gives more simple modeling,less computation and greater ability to completely characterize the nonlinear system,as is allowed by error,features feasibility and practicality to a certain degree.

According to the principle of matrix converter,the method of space vector modulation is analyzed and discussed.The matrix converter support vector modulation method is simulated and proved by applying the simulation block of Matlab/Simulink to change the traditional expression method of the space vector modulation simulated by the S-function.