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In recent years, along with the continuously expanded application fields of RFID, the system capability has been put into a higher level, and at the same time, the research of 2.4GHz active RFID system has attracted more and more attention. In this paper, the basic tag function and the partial hardware structure based on the low power 2.4GHz radio transceiver chip nRF24LE1 are introduced briefly....
The time offset estimation (TOE) is an important issue in TD-SCDMA downlink, which conventionally is realized together with downlink synchronization code acquisition, and therefore the correlation detection is prefered. However, the resulting complexity is very high due to the start search within a full frame. In order to tackle this problem, this paper presents a coarse TOE scheme independent of...
Because of the special topology structure, DC-DC converter has wide application prospect in multiple utilization of resource, which differs in capacity and voltage level, such as solar cell, fuel cell and wind power generation. In view of off-grid wind generation system, in this paper, a novel single-ended primary inductance converter (SEPIC) circuit structure is presented to handle the big voltage...
A control system of integrated circuit (IC) molding and separation is designed, and we analyzed the control part of the system. The system is based on BP neural network's PID controller, it focus on the application of BP neural network on the basis of FPGA, the design of PID controller on the basis of ARM, the servo motor's control and the implementation of position detection using Optical Encoder...
The study in this paper is to solve the compatibility of the PLB and AHB interface. In our FPGA hardware platform, we use the PowerPC embedded in Xilinx Virtex4 as our CPU, which follows the PLB protocol. As our slave IP cores are all designed with the AHB interface, we need to design a PLB-AHB bridge to translate the two protocols. This paper describes in detail the designing of such a bridge, which...
A FPGA-based video capture, output and pre-treatment system has been developed. The system adopts the I2C bus protocol and link-port data transfer protocol. And also it combines PAL video format to complete the process of video-capture, decode, encording and output. With the help of IP core provided by Altera company, it achieves the DDR controller, providing storage space for video images. Median...
This paper presents a capacitated location/allocation model to minimize the cost of allocating capacitated facilities. Genetic algorithm is employed to guide solution procedure in order to yield more satisfactory results. Computational experiment is conducted to validate the proposed approach based upon the datasets extracted from the real applications.
In recent years, with parameter self-tuning of the drive is concerned by national experts and scholars, which has become the focus of research. Because the induction motor has a strong coupling, nonlinear, operating parameters and other significant characteristics change, many scholars do a lot of research on the induction motor parameters identification, the parameters identification theory, many...
A low noise interface circuit of MEMS sensor system for ultra-low frequency signal is presented in this paper. The interface circuit in CMOS processes uses chopper technique which greatly reduces 1/f noise and offset voltage of small signal processing circuit. The circuit that has a gain of 63 is fabricated in 0.5um 2P3M CMOS process. The equivalent input noise caused by clock through and charge injection...
MAC protocol is the key technology in cognitive radio networks. Exchanging control messages and updating available channels are the important parts of the MAC protocols in cognitive radio networks. In this paper, we propose a novel MAC protocol supporting Dynamic Control Channel(DCC-MAC). DCC-MAC can adaptively choose a optimal channel from multiple available channels, which avoids to using a dedicated...
In this paper, a kruskal algorithm of graph theory in calculating the cost of the erecting communication network by matlab is presented. With the algorithm, optimization choice of total cost of the communication construction cost between the cities and provide some code and GUI which uses the fuzzy weight process, is obtained.
This paper presents a modeling method of Switched Reluctance Motor (SRM) based on the Radial Basis Function (RBF) Neural Networks. By analysing measuring data and nonlinear characteristics of SRM, the modeling of SRM is designed with Gaussion Function. The simulated results show that the proposed model has better capability of generalization and correctly represents the characteristics of SRM compared...
This paper presents an approach to design an adaptive fuzzy logic control algorithm for dynamic positioning systems, and the adaptive laws of the control system were proved based on lyapunov function. In this algorithm, it doesn't require to accurate mathematical model. Simulation results at position or trajectory tracking show the effectiveness of the control system.
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