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Market research shows that one of the most intolerable issues in the pack of cigarettes is the cigarette missing. This issue makes substantial adverse effects on a company which needs to be avoided completely. Existing research uses a weight detection method to identity packages with issues. However, the accuracy of weight detection methods is low due to instrument error and complex workshop environment...
In view of certain limitations to applications of conventional multivariate statistical methods under increasingly complicated industrial process system, this paper proposes a fault detection method for complex electromechanical system using ILLE-SVDD data dimensionality reduction. The method combines traditional ILLE and SVDD. First of all, sample points in the original high-dimensional space are...
Insulator is an important guarantee for the safe operation of electrified railway, but because of working conditions, the insulator would face long-term effects of wind, snow and rain. Insulator surface would easily accumulate filth and pollution flashover occurs, which often leads to blackouts and threatens the safe operation of the railway. Therefore, detection of the insulator working state is...
With the development of the aviation industry and the improvement of people's living standard, more and more people choose aircraft as their way of travel, but the airline adjusts the price according to the revenue management in real time. The purpose of this paper is to design different decision-making tools from the customer's perspective, and to provide customers with the relevant information needed...
In view of how to relief driving fatigue to the drivers effectively, designing a intelligent clutch control system which has simple and novel structure. The system includes four parts, which are clutch mechanical assembly, manual controlled clutch equipment; intelligent clutch controlled equipment and controlled system. According to the loading test in car, The test results show that the intelligent...
In order to improve the vehicle ride comfort, the vehicle EHA (electro-hydrostatic actuator, EHA) active suspension structure has been proposed. The mathematical model of the 2 DOF active suspension and the mathematical model of the EHA active suspension system are established. The influence of the actuator (brushless DC motor) on the main force of the system is analyzed. A force tracking control...
In order to meet the requirements of the fixed-point movement of the slave manipulator during surgery in Celiac Minimally Invasive Surgical Robot System, a new type of robot arm based on the remote positioning mechanism is developed. Firstly, the remote mechanism of the manipulator is designed, and then the manipulator model of the peritoneal minimally invasive surgery robot is established. Secondly,...
The river pollution has become a prominently environmental problem to human survival. Thus it is in urgent demand for real-time monitoring of river water. However, traditional methods have some disadvantages such as complicated instrument, high cost and cumbersome operation. Herein, we developed wireless conductivity sensor, which forms a monitoring network system based on ZigBee. The node of the...
According to the theory of cylinder indexing cam mechanism, based on the modular design, the CAD/CAM system of cylinder indexing cam mechanism is developed by VB6.0 and Creo3.0. This system is a visual interface which is build by VB6.0and it can be used to output the three-dimensional coordinate data and processing date of the cylinder indexing cam through the basic parameters input of cam and the...
A broadband GaAs MMIC double balanced diode ring mixer was designed in the paper. The mixer covers radio frequency (RF)/local oscillator (Lo) operating frequency range from 3 GHz to 10 GHz and the bandwidth of intermediate frequency (IF) signal is from 10MHz to 4 GHz. The mixer gets a conversion loss less than 12 dB and decent LO to RF isolation of nearly 30 dB, and the mixer also obtains good linearity...
In order to further improve the riding comfort of trackless rubber tire vehicle, to ensure the safety of coal mine underground transportation, a quarter vehicle of the dynamics equation was established for two-degree of freedom suspension system. And the underground road roughness value of the input signal was calculated. Then based on the Simulink module of MATLAB software, the mathematical simulation...
Thermal error is the key error source which affects the stability of machining accuracy and temperature measurement point optimization is the premise and difficult to achieve accurate thermal error compensation. In order to reduce the temperature measurement point and improve the efficiency of temperature data acquisition, The method is proposed based on principal component analysis (PCA) and Single...
Principle of graphic collection system based on PCI9054 and DSP was introduced in order to collect information outside rapidly and instantly in the paper. The telecommunication of collection card and host computer by PCI9054 interface chip was introduced, the logical programmed module was introduced simplified the design of digital logical circuit and implemented the transform of graphics format,...
In the power system, earth electrode is buried in the soil for current overflowing, to ensure secure and stable operation of power grid and electric equipment. When the DC transmission system is in the unipolar-earth mode, the ground electrode may assume a large positive DC or negative DC, which has an important effect on the electrochemical corrosion of the ground electrode in the soil environment...
A fault diagnosis approach based on empirical mode decomposition(EMD), Hilbert envelope spectrum and Kurtosis criterion is proposed, by considering the nonlinear and non-stationary characteristic of fault signal for rolling bearing. The fault signals are decomposed into a sum of intrinsic mode functions(IMFs) with EMD decomposing process. Also, some of the IMFs are selected to reconstruct the signal...
In all the security issues in wireless sensor networks (WSNs), session key exchange is fundamental one with a great challenge. Owning to the semi-group property and one-way trapped characteristic of Chebyshev polynomials, an enhanced key exchange scheme based on Chebyshev chaotic map for WSNs was proposed in this paper. Our scheme aims at increasing the security of the session key between nodes. According...
Probabilistic tracking algorithms typically using linear structure to update the learning model. Such linear structure is not appropriate for long-term robust tracking as the occlusion and other challenging factors may interfere the processing of incoming frames. Recently a spatio-temporal context (STC) algorithm based on Bayesian framework has using the context information between the target and...
In today's energy shortage and environmental pollution, governments are actively developing new and renewable clean energy, wind energy as an outstanding representative of clean energy has been rapid development in recent years. However, with the increasing proportion of wind power, the problem of abandoned wind is becoming more and more serious in our country, especially in the northern region during...
The poor performance of MHD ARS at low frequency has depressed its accuracy and application range. A preliminary study on the magnetohydrodynamic (MHD) angular rate sensor combing Coriolis effect (C-MHD ARS) is made to achieve the low-frequency bandwidth expansion. Physical model of C-MHD ARS is given, and then the physical design with an MHD pump is described. The numerical simulation and experiment...
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