Advanced Materials Research Vols. 204-210

Abstract: In this paper, a measure and control system in steel-making hot stove of ferroalloy mine is presented. The system can measure the temperature of the level surface of aggregate and outlets for discharge by using infrared instruments. We estimate the temperature of the part between bottom and surface, using fuzzy reasoning and expert system. The practice indicated that, applying the intelligent control system is suitable and successful by using computer. We foresee that this technical achievement will have a broad prospect for application.

Abstract: Gabor transform is very suitable for time-frequency analysis and good for filtering non-stationary signals. The threshold of the Gabor transform filter is a key factor for the filter’s effectiveness. A novel threshold based on initial highest inter-cluster distance probability (IH-ICDP) is described in this paper and it can make the filter more efficient. Some experiments have been carried out under several conditions to evaluate the new threshold’s characteristics. The experimental results show that Gabor transform filter with this proposed threshold works better than wavelet transform filter, especially when the signal’s SNR is very low. From the evaluation results, it is possible to consider that the threshold presented is optimal or nearly optimal.

Abstract: Sediment on the bottom of borehole forms a major part which is often responsible for reducing the bearing capacity of pile. The normal method of measuring sediment thickness by ultrasonic signal is to measure the sound time and intensity of echo signal. This paper presents a novel measurement method by estimating the ultrasonic channel. Wiener filter is applied to estimate the ultrasonic optimal channel under minimum mean square error criteria. Experiments of estimating channel based on Wiener filter have been conducted with given signals and actual ultrasonic detection echo. The influence of noise in the signal has been discussed. The results show that, during signals high SNR, the estimated channel is corresponding to the sharp changes in the actual signal and can be used to determine the sediment thickness.

Abstract: In order to find out the advantages and shortcomings of two line types of three-thread single-screw pump, the comparative analysis method is initially used on the same kind screw pump of different line types .By using ANSYS，this paper adopted the finite element analysis to analyze the deformation、stress and strain of outer equidistant curve of curtate hypocycloid and inner equidistant curve of curtate epicycloids two line types three-thread single-screw pump under uniform pressure and 1MPa differential pressure .It focuses on discussing over the rubber stator of screw pump suffers influenced by the above three factors. The result shows that the existence of uniform pressure makes an uniform radial displacement of the rubber stator; the 1MPa differential pressure makes a great deformation of the rubber stator and the value of stress and strain also increases accordingly, by comparative analysis of two line types of three-thread single-pump, the sealing property of outer equidistant curve of curtate hypocycloid three-thread single-screw pump takes more advantages rather than inner equidistant curve of curtate epicycloids three-thread single-screw pump.

Abstract: The potential to remove xylenol orange (XO) from aqueous solutions through adsorption on γ-cyclodextrin-grafted carboxymethyl cellulose (CCMC) was investigated in batch experiments. The effects of contact time, adsorption temperature and initial XO concentration were discussed. Results of batch experiments showed that CCMC exhibited some sorption capacities towards XO. It was found that isotherm fitted Languir and Freundlich models for the adsorption of XO on CCMC. On the basis of the Langmuir analysis, the maximum adsorption capacities were determined to be 29.9, 27.1, 21.9, 16.2 and 16.1 mg of XO per gram of CCMC at 283, 288, 293, 298 and 303K, respectively. The negative values of free energy change indicated the spontaneous nature of adsorption.

Abstract: According to multi-resolution analysis of wavelet threshold denoising principle, this paper presented two improved algorithms of continuity and adaptive threshold based on hard thresholding. The soft thresholding (hyperbolic thresholding) was used in the intervals after setting two thresholds, and the isolated points were removed according to the adjacent correlation coefficient during the processing. As a result, the hard thresholding’s shortcomings were reduced. The simulation results show that improved algorithms have both better visual effect and PSNR than the traditional approaches.

Abstract: Lottery scratch-off game is popular in our lives. However, most studies of E-lottery concentrate on the E-lottery that has a purchase period before tombola, few studies focus on E-lottery scratch-off. In the scheme proposed in this paper, lottery sale website and independent third party sort the E-lotteries by the random sort method based on natural enumerative system and encrypt the E-lotteries sorted randomly with pseudo random sequence which is generated by utilizing the combination of discrete logarithm method and chaos mapping method. Random sort method and encryption with pseudo random sequence can prevent lottery sale website, independent third party and lottery player forging legal lotteries. Moreover, lottery sale website and independent third party add identifiers in E-lotteries to prevent repeating fulfillment of bonus.

Abstract: The IEEE1451.4 is a new standard for plug and play sensors.The standard defines a mechanism for self-description and self-indentification for the traditional analog sensors.The mechanism reduce the time for configuration and diagnosis greatly.Introduce IEEE1451.4 and IEEE1451 other standards.The structure and model of the IEEE1451.4 sensors are analyzed.TEDS(Transducer Electronic Data Sheet) that contains the information of sensors and MMI(Mixed-Mode Interface) that transfers both digital signals and analog signals are carried on reseach in detail.

Abstract: Delay-dependent H₂/H∞ control is studied for a class of switched T-S fuzzy systems. The sufficient condition for delay-dependent asymptotical stability H₂ and H∞ and performance of the closed-loop switched T-S fuzzy system are derived. Meanwhile, a switching law and fuzzy controller are designed respectively. Moreover, an optimal problem corresponding with time-delay is provided, and an upper bound of time-delay which ensures the system asymptotically stable is obtained using employing MatLab LMI toolbox. Finally, the effectiveness of the proposed method is demonstrated by a numerical example.

Abstract: This paper studies the production effectiveness of industrial cluster production and recycling production from the dual perspective of the economic and ecological benefits, and put forward a new model of recycling industry cluster which can get the best economic and ecological benefits. It has a great significance on harmonious development of resources, environment and economy.