Papers by Keyword: Filtering

Abstract: The article presents an approach to centralised collection, recycling and removal of waste pickling and galvanic solutions and sludge designed for small steel making plants and workshops having the described processes and using flow-through filter blocks.

Abstract: The article provides a discussion concerning the potential for applying advanced methods of vibroacoustic signal processing for the purposes of identification of a combustion engine state. It contains example results of vibration measurements on the passenger car combustion engine in three directions. The research was conducted on stopping vehicle, for different pre-set values of the engine rotational speed. The results of preliminary tests focused on the potential use in the diagnostics of engine operation.

Abstract: This article is devoted to review of the existing mobile water treatment complex. Development of resource-efficient technology for water purification is examined by the change of process chart as a function of qualitative composition of a water source. Machine design variants are proposed on the terrain vehicle.

Abstract: Hydrocyclones are equipments that separate a discrete phase (solid, liquid or gas) from a continuous phase (liquid) by generating a centrifugal field. The objective of this work was to study, experimentally, the incorporation effect of cylindrical and conical permeable walls (CyCoFH) on an optimized geometry hydrocyclone (H11) to evaluate the equipment’s processing capacity. By inserting a filtering cone and cylinder, during the operation of these separators, besides the traditionally observed streams (underflow and overflow), there is an additional liquid stream resulting from the filtering process in the conical and cylindrical regions. Despite the low filtrate flow observed during this new equipment’s operation, it was found that the filtration is benefic to hydrocycloning. According to the main results, the CyCoFH hydrocyclone of lower permeability presented a greater processing capacity. The feed flow rate was 23% higher than the corresponding conventional hydrocyclone, in the same geometrical and operational conditions.

Abstract: This paper-based design Kinetics ARM-Cortex M4 MK10DN512ZLL10 microprocessor detecting through the use of electromagnetic sensors has 10mH 100mA alternating current conductor, a continuous analog signal obtained through the solenoid to the LM358 chip amplifier many times the signal amplifier circuit , and then the analog signal is converted by the algorithm into a digital signal, and these values ​​can be obtained through a filtering process after a smooth and accurate digital microprocessor for processing.

Abstract: At present, the ballistic Target tracking has a higher demand in convergence rate and tracking precision of filter algorithm. In the paper, a filter algorithm was improved based on particle filter. The algorithm was carried out from the aspects such as particle degradation and particle diversity lack. A novel ballistic coefficient parameter model was built, and was expanded to the state vector for filtering. Finally, the improved algorithm was simulated by MATLAB software. The simulation results show that the algorithm can obtain better convergence speed and tracking precision.

Abstract: In this paper, a kind of amplifying and shaping circuit was designed according to the characteristics of high frequency and small amplitude of surface acoustic wave (SAW) gas sensor signal. The circuit is applied to two-channel mixing detection method to solve the problem that backend devices cannot identify sensor signal. The whole circuit is simple in structure and has very good shaping effect on voltages signal of millivolt level, meeting the need of the sensor of gas detection.

Abstract: Mobile cloud computing has become a new paradigm, because of rapid growth of mobile devices such as smart mobile phone performance and cloud computing. This mobile cloud environment, with various kinds of service and IT resources according to the user's requirements, effectively provides services and IT resources are necessary. Therefore, in this paper we propose the use of frequency mobile cloud based analysis and filtering method of computing resources to distribute resources and services to users based on context-awareness information. Introduction

Abstract: Total magnetic intensity (TMI) data is an important data for understanding the seafloor spreading of the South China Sea. In this paper, we studied to denoise the TMI data in the ocean subbasin of the SCS by using various filtering techniques. Based on the noise features occured in the data, we utilize the directional filter to reject noise of NS direction, and then apply the anisotropic diffusion filter to further elliminate the bead-like artifacts. The denoised result presents a well conherence of magnetic lineations in the ocean basin. The magnetic lineaments trend to nearly EW in the eastern subbasin while NE in southwestern subbasin. The intensity of the magnetic lineaments in the eastern subbasin is stronger than that in the southwestern subbasin.

Abstract: The matched filter of chaotic radar system proposed by Ned J. Corron can be implemented through low-cost analog devices. But the spectrum of transmitted signal of this system is dispersion, causing signal in the process of propagation prone to spectrum leaked. To solve the problem, this paper proposes a low-cost signal design method. In transmitter, making chaotic signal become a band-limited signal by filtering to shape the spectrum; in receiver, using synchronization and filtering to recover the chaotic signal. The proposed method is implemented with low-cost analog devices; in addition, the method is still valid when the SNR is as low as-20dB.