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We propose an adaptive service model that maximizes the amount of service that spectrum users (SUs) achieve from accessing DSA systems. The proposed model allows SUs to utilize available spectrum efficiently by enabling them to locate spectrum opportunities in a distributed manner, thereby maximizing the long-term rewards that SUs receive. In this model, SUs adapt their required level of service with...
Real-time path planning is one of emergent approaches which efficiently reduce traffic jam in urban scenarios. Designing an efficient path planning strategy to achieve optimal vehicle-traffic flow control still remains a challenging problem, especially when we take human's uncooperative and uncoordinated selfish behaviors into consideration. In this paper, we first introduce an intelligent transportation...
The fluorescence-based integrated chemical and enzyme sensor arrays on which two kinds of 10 μm i.d. sensor spots were arranged alternately on one chip, were developed by using microcontact printing. FITC, ruthenium complex and europium tetracycline was stamped onto a DLC sputtered glass slides for pH, oxygen and hydrogen peroxide sensors, respectively. After printing of oxygen sensor spots, pH sensor...
In this paper, we compare two our design methods for active mechanisms based on the motion analysis of given tasks. The common purpose of these methods is to achieve low degree-of-freedom (DOF) mechanisms. The mechanisms which are designed with two methods can reconstruct the approximated motions for the tasks that are defined by the motion trajectories of the end effectors. The difference of the...
The paper presents three mechatronics project courses for the students of the first degree of Bologna program at the University of Maribor, Slovenia. Three courses, Project I, Project II and Project III, are assigned to the project work in the second and third study year. First course, Project I is some kind of introduction into the project work and the students are almost fully supervised by the...
Recently, various types of robots have been researched and developed for supporting our life. Also, the perceptual system for the robot is researched. Visual perception includes a lot of valuable information and it is useful for all intelligent robot system. In this paper, we discuss intelligent robot vision in order to active sensing and information structuring for human-robot collaboration system...
To apply FPGA automation system to the flow adjustment of traditional metering pump is a more advanced study theme. Using computer, FPGA technology and combined modern sensor technology, a FPGA -based metering pump motor rotation rate controlled system was developed. It can control the flow of the metering pump successfully. It is proved that it not only has simplified the flow control operation and...
It is a timeless and actual problem to develop vehicle's active safety. In case of commercial vehicle category more sophisticated difficulties could be found. Increased mass and inertia are the fundamental differences between a usual passenger car and a truck. At the same time, the low series number requests cheap solutions. The aim is in this way to ensure low cost solutions to control increased...
With the constantly development of large space, the fire prevention of large space building is also increasingly important, but the traditional fire extinguishing system can not satisfy the requirements of fire extinguishing of interior large space. An intelligent fire extinguishing system of interior large space that using the single chip microcomputer SPCE061A as the main controller was designed...
This paper investigates the feedback stabilization problem for networked control systems (NCSs) with unknown disturbances, where sensors and actuators communicate with a remote controller over a multi-purpose network. A new control scheme, which relies on both information-theoretic and control-theoretic tools, is proposed to stabilize linear discrete-time plants. A sufficient condition for stabilization...
In this paper we analyzed the restriction factor of the stack crane speed, and put forward the adaptive control method of variable speed for stacker. Using the method of neural network we established the relationship between the highest permitted speed and carrying weight, carrying height of stacker. Finally we designed the control system of stacker based on neural network. It is improved that this...
Multiple-sensor Synchronous data collection system was developed on the base of RS485 distributed single-chip and the sensors of resistance spot welding current, voltage, electrode displacement and electrode pressure met spot welding process real time monitoring. The results show that the incomplete fusion defects of aluminum alloy pulse spot weld can be judged by the electrode displacement range...
Currently in China the level of coal mine roadway roof abscission layer monitoring is low, especially in the most coal mine the transmission and observation of the underground separation data are by manual labor or by cable transmission, there is a high cost for coal mine. This paper introduces a roof abscission layer monitoring system based on ZigBee which is adapting to environment of coal mine...
The recent interest in Wireless Sensor Networks has led to a number of clustering algorithms that use the limited energy available at sensors more efficiently. In this article, we present a heritable clustering algorithm based on HEED for low energy wireless sensor network. It brings in appointment mechanism to reduce the cluster head reelect overhead efficiently. In the cluster, TDMA communication...
This article introduces the make-up and principle of intelligent wheat dampen control system, establishes system mathematical models, analyses PID control and the fuzzy roles of parameter on-line dynamic self -tuning, develops a fuzzy PID controller.
The supervision and administration of grains circulation is national key R&D program. As a booming technology, RFID gives full play to its advantages in this area. Especially the integration with wireless communication devices and sensors, RFID can fulfill the task from grains' purchasing, conveying, storing to product transaction. Considering the circulation's complication, it is stringent to...
Owing to the weakness, low susceptibility to interference and uneasiness to recover of DC signals, permalloy based upon high magnetic permeability is used as a magnetic material. The change of current is transformed into that of inductance with reference to the relationships among current I , intensity H of magnetic fields, intensity B of magnetic induction, rate of magnetic conduction of material...
A new rotor position sensorless method for switched reluctance motor drive system (SRD) is described in this paper. Rotor position can be considered as a function of phase current and the variation rate of it. Using the phase current obtained by sensors and the current variation the rotor position can be estimated accurately and quickly. A control strategy of SRD without position sensor is researched...
The former maneuvering target tracking model is based on deterministic system. But the actual fact is the parameter and structure of system often change at random, which make the tracking system dynamic with the indeterminacy of structure and parameter. Use random changing theory and sensor management technique, and design the changing tracking model of system, considering fully the changing of state...
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