The communication controller is a very important communication equipment in automatic command system,and it is also a technology-intensive *** is a high probability of breakdown or spoilage in *** to the test and diag...
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The communication controller is a very important communication equipment in automatic command system,and it is also a technology-intensive *** is a high probability of breakdown or spoilage in *** to the test and diagnosis requirements,using M&S(modeling and simulation) test technology and diagnosis technology based on expert system,a portable gleichschaltung chassis is designed, PXI bus and modular circuit are used,and this automatic test and diagnostic equipment is set *** device can detect the communication and commutation ability of communication controller,verify the performance adroitly,and find out the malfunction *** modular design of its hardware and software can be used for a variety of models of test and diagnostic automatic command system and civil communication controller.
Since coal milling system is non-linear,time-varying and large delay,using of a class of adaptive predictive functional control algorithm can adjust the existing adaptive control law,obtain unknown parameters informat...
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Since coal milling system is non-linear,time-varying and large delay,using of a class of adaptive predictive functional control algorithm can adjust the existing adaptive control law,obtain unknown parameters information and effectively suppress the model mismatch caused by controlling the amount of *** simulation shows that the algorithm is a simple computation,robustness,superior control strategy with better control quality and mill control system using this algorithm has a more satisfied performance than conventional control strategy.
Based on the two-parameter measurement theory of two-phase flow by orifice plate differential pressure noise,use the smart differential pressure and pressure transmitters, developed a virtual instrument for saturated ...
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Based on the two-parameter measurement theory of two-phase flow by orifice plate differential pressure noise,use the smart differential pressure and pressure transmitters, developed a virtual instrument for saturated steam mass flow rate and dryness *** using alternating acquisition process between differential pressure and pressure signals,the high-speed data acquisition was *** calculation function of cumulative mass flow was achieved by using the computer *** a data was acquired,a calculation step was completed,so the data processing is more *** instrument can be used for two-parameter measurement of saturated wet steam in heavy oil thermal recovery and such that other industries.
Time and frequency synchronization is a key technology of the radar calibration system,the realization of synchronization is necessary for this calibration to adopt the technology of two-point radar target simulating,...
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Time and frequency synchronization is a key technology of the radar calibration system,the realization of synchronization is necessary for this calibration to adopt the technology of two-point radar target simulating,In this paper a method based on GPS satellite is introduced,that is realized by receiving standard time and frequency signal transmitted from GPS satellite and adopting synchronization system's function module to realize the time and frequency synchronization between sea-going part and harbor part,this method is superior to traditional synchronization device in aspect of long-time correcting frequency's error,and greatly enhances synchronization accuracy of time and frequency in the calibration system,and so the error is reduced when the calibration system calibrates a ship radar.
In order to improve athlete's achievement,coaches rely on modern science and technology to guide *** heartbeat information is extremely important for the coaches to train the athlete.A set of athlete's heartbe...
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In order to improve athlete's achievement,coaches rely on modern science and technology to guide *** heartbeat information is extremely important for the coaches to train the athlete.A set of athlete's heartbeat sound detection system was designed to obtain the informations of athlete's heart rate based on *** simulation experiment shows that it is effective and convenient to collect and denoise the athlete's heartbeat sound,and can deal with the information in a timely fashion.
In this paper,a finite element method was used to investigate the lamb wave propagation in aluminum adhesive *** 2D-FFT to recognize the modes,the simulation results were compared with the theoretical *** experiment r...
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In this paper,a finite element method was used to investigate the lamb wave propagation in aluminum adhesive *** 2D-FFT to recognize the modes,the simulation results were compared with the theoretical *** experiment results show that the simulation is accurate and *** is approved that the lamb wave propagation is multi-mode and *** method of 2D-FFT can effectively identify the Lamb wave modes,the results of the finite element analysis agree well with the test results and the theoretical results.
Based on blind component separation,the signal can be separated into periodic component,random stationary component,and random nonstationary *** improved algorithm was proposed based on Antoni's STFT algorithm,whi...
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Based on blind component separation,the signal can be separated into periodic component,random stationary component,and random nonstationary *** improved algorithm was proposed based on Antoni's STFT algorithm,which was used in the adaptive line enhancement (ALE) to separate the periodic and random *** simulation and experiment results proved that the method can extract the fault characteristic of gearbox effectively and has good application foreground.
Today's GPS positioning technology has been widely used in various fields and brought great convenience for the people's production and daily *** positioning technology can be divided into the positing technol...
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Today's GPS positioning technology has been widely used in various fields and brought great convenience for the people's production and daily *** positioning technology can be divided into the positing technology based on pseudo-range and the carrier phase-based positioning technology,both have advantages and *** them,the carrier phase-based positioning technology despite has the high positioning accuracy,but it requires the higher GPS hardware,but also it has the integer ambiguity of the issue So,this paper will focus on discussion based on pseudo-range single-poor relative positioning technology,avoid the integer ambiguity of the issue in the case of low accuracy and also meet the requirements of the *** result can also be used to subsequent processing.
A diagnosis method based on wavelet packet transform and RBF neural network was proposed to detect and identify sensor fault based on the character of sensor *** sensor fault signals are decomposed in different freque...
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A diagnosis method based on wavelet packet transform and RBF neural network was proposed to detect and identify sensor fault based on the character of sensor *** sensor fault signals are decomposed in different frequency bands by wavelet packet decomposition and reconstruction,and the energy of every band is used as the eigenvector of condition monitoring as well as input of RBF(Radial Basis Function) neural *** classification of sensor fault is conducted by using the best RBF neural *** results prove that the method has good tracking ability of nonlinear system and higher diagnosis accuracy.
In this paper,we focus on how to control the robot's end-effector to track an object,meanwhile,to approach it with a suitable posture for grasping,which we named as"Approaching Visual Servoing".We propos...
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In this paper,we focus on how to control the robot's end-effector to track an object,meanwhile,to approach it with a suitable posture for grasping,which we named as"Approaching Visual Servoing".We propose a hand & eye-vergence dual control system to perform Approaching Visual *** idea stems from hammerhead shark whose eyes turn to gaze at the target prey to be suited to triangulation,enhancing the ability to measure precisely the distance to the prey for catching *** animal's visual tracking includes motion control by visual servoing and triangular eye *** proposed method includes two loops:an outer loop that direct a manipulator toward a target object and an inner loop that direct active motion of binocular camera for accurate and broad observation of the target object.
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