A NEW METHOD BY USING MASS AND ACCELERATION PARAMETERS FOR BALANCING INERTIAL FORCE OF MECHANISM     

Wang Bingle Song Liquan 《保鲜与加工》1988,(2)

This paper presents a new method by using mass and acceleration parameters for balancing inertial force of mechanism. Compared with other balance methods, this one is simple, clear and superior in regularity when the balancing equation of complex mechanism is established, and its solving procedure is also easy. The new methcd is convenient to learn and use as well as convenient to program.  相似文献   

EQUAL ARA ALGORITHM OF PWW WAVEFORM     

Wang Xeqin 《保鲜与加工》1988,(2)

This paper presents the equal theory of the sine wave voltage and PWM waveform in the integration of time. Using the graphic method as well as the comparison method of sequential integration the PWM control pattern is calculated. Depending on an example for PWM circuit inverter the microcomputer is investi-gated. The method is simple and effective. It is specially adeguate to the engineering control.  相似文献   

STUDY OF DIGITAL SIMULATION MODEL FOR THE MAGNETIZING CHARACTERISTIC OF REACTANCE TRANSFORMER     

Wang XiaoruMi Linshu 《保鲜与加工》1990,(3)

Based on the experiment, magnetizing characteristic and its mathematical model of iron for the reactance transformer DKB has been studied in this paper. Its simulating calculation model has been achieved and implemented by program. The result of the simulation is satisfactory compared with that of the experiment.  相似文献   

Design of Analysis and Evaluation Application System for Ride Comfort     

LU Hai-feng  LI Ming  LI Jun 《保鲜与加工》2005,(6):12-14

The stimulation and the optimal design for bus ride comfort have played an importable roles in design and reform of automobile products. The new vibration comfort coefficient is applied to evaluate the ride comfort of automobile, and the software is developed. It is verified that the study has theoretical and practical value significantly.  相似文献   

A Study of the Vertical Vibration of the 4200 Thick Plate Rolling Mills     

Zhu Caicao Wang Hongen Gong JianxiaoYu Shixing 《保鲜与加工》1993,(6):51-57

In this paper,the mill stand and the rolled piece were studied as a system. Based on the disoreted masses and the deformation of bending curve of the roller and roll housing, according to Rayleigh method,the equivalent mass and and the equivalent stiffness of the mode were solved,and set up a multiple degree of freedom vibration dynamic model. And also did theoretical analysis and calculation with an exapmle of the 4200 thick plate rolling mills.  相似文献   

AN APPRONTMATE CALCULATING METHOD FOR WALL PLATES OF MAN'' S DRY GAS HOLDERS     

You lihua Wu Huibi Sun Renbo Wang Daivu 《保鲜与加工》1992,(4):48-53

The basic equations of wall plates of MAN' S dry gas holders are derived in this paper. According to the law of cylindrical bending given by the finite element results .we derive some approximate formula calculating the deflection and stresses of the wall plates from the basic equations. Compared with the known approximate calculating method.the method car. obviously increase the percision.  相似文献   

Design on Enterprise Informationization Estimates the Model of Composite Index     

ZHANG Yong-gang  ZHOU Ming 《保鲜与加工》2005,(10):147-150

This peper commentaried some of our country comparatively well-known enterprise informationization estimate theory,point out,there is existing the question of informationization estimates,that the achievement can't guarantee "appropriate informationization" establishing and enterprise informationization sustainable development,It propose the three-dimensional enterprise informationization estimate the theory and method,that includes information-based level,information-based quality and information-based development potentiality.  相似文献   

Existing Situation on Disposal of Sludge from Wastewater Treatment Plant in Three-Gorges Reservoir Area     

HE Qiang  ZHOU Jian  HUANG Ming 《保鲜与加工》2007,(3):1

At present 18 wastewater treatment plants operateing in the Small towns of Three Gorge Areas of Chongqing Municipality, producing 132.95 tons surplus sludge everyday. As regards to the disposition of such numerous surplus sludge, the major disposition technique in these wastewater water treatment plants, i. e. , thickening and mechanical dewatering technique followed by feeding into the municipal solid waste landfill, seems to have a rather bad effect on the normal operation of the municipal solid waste landfill, due to the unstabilized sludge resulted from this technique of the sludge disposition and high moisture in the sludge, which is higher than 80%. This paper has paid some attention to this phenomenon. With respect to the small towns having the the municipal solid waste landfill, the techniques of mechanical dewatering, calcareousness stabilized etc. before feeding into the municipal solid waste landfill, seem to be feasible, while the composting and comprehensive utilization of sludge is available in the small towns which have no municipal solid waste landfills.  相似文献   

白血病抑制因子（LIF）及其受体在月经 周期猕猴卵巢内的表达     

岳占碰  李世杰  张学明  韩春田  郭斌  王洪斌  杨增明 《中国农学通报》2006,22(2):14-14

应用免疫细胞化学方法对白血病抑制因子（leukemia inhibitory factor, LIF）、白血病抑制因子受体（leukemia inhibitory factor receptor, LIFR）和gp130在月经周期猕猴卵巢内的表达进行了研究。结果表明：LIF、LIFR和gp130在猕猴卵巢内的表达量随月经周期的不同而变化，LIF及其受体在增殖期卵巢内的表达量高于分泌期的卵巢。LIF及其受体在原始卵泡、腔前卵泡和有腔卵泡的卵细胞内表达量均较高，在颗粒细胞、卵泡膜、卵巢生殖上皮和卵巢基质中有少量表达，而在闭锁卵泡、退化的黄体和卵巢髓质中未见表达。LIF及其受体在猕猴卵巢内的表达可能受卵巢分泌的类固醇激素所调控，LIF可能通过自分泌或旁分泌的方式在猕猴卵泡发育及排卵等过程中起重要作用。  相似文献   

A METHOD FOR MEASUREING LARGE OPTICAL PATH DIFFERENCE WITH THE HOLOGRAPHIC THREE WAVEFRONT INTERFEROMETER     

Wen Guangjun Xie Fuzhen Wang Ding 《保鲜与加工》1992,(1):134-138

The holographic three wavefront interferometer is used to measure large optical path difference. This method is proved to be practical through the measurement of the deformation -Voltage Curve of piezocrystal.  相似文献