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This paper introduces a novel design of intelligent control system for a stepper motor, especially the design method of a controller for allocating pulses by using EDA technology. Which makes an excellent control on motor rotate speed and direction, and also positioning accuracy. Moreover, the controlling parameters can be changed optionally. In a word, a stepper motor with the proposed design is...
A method for the design as well as implementation of FPGA-based Direct digital synthesizer (DDS) is firstly presented in this paper. And then corresponding system simulation and experimental results are given. The DDS for generating a sinusoidal signal owns the features of simple circuit, easy to be controlled, stable performance, high frequency conversion speed and fine accuracy etc. And its output...
It's the trend that sensor network become more standardized and unified as internet of things develops continuously. Aiming at resolving the problems arising from variety of sensors type and interface, this paper presents a design idea of a standardized sensor network node based on virtual instrument and IEEE 1451 standard, and expounds the realization of this sensor node. A concept of sensor node...
The paper introduces a design scheme to quickly build data acquisition system based on SoPC and LabVIEW technology. The slave computer of the acquisition system in the design adopts the EP3C10 chip of the CycloneIII series produced by Altera as the main control chip for digital control on A/D converter chip CS5550, digital signal after A/D conversion will be sent to the host computer through RS232...
The IEEE 1588 standard could synchronizes independent clocks running on separate nodes of a distributed measurement and control system to a high degree of accuracy and precision. But the standard did not present the method to implement the protocol in detail. An implementation of the IEEE 1588 based on an FPGA is presented in this paper. And the result of the experiment shows this method could achieve...
In order to solve the problem of real-time and accuracy for collecting the traction battery evaluation parameters, including battery voltage, battery current and battery temperature, the data acquisition system based on Field Programmable Gate Array(FPGA) and Universal Serial Bus Protocol (USB2.0) is designed. In this paper, FPGA is used as the microcontroller to control analog to digital(A/D) conversion...
Firstly, in this paper, the topological structure and the principle of the three-level NPC inverter are analyzed, by using the SVPWM, controlling the mid-point drift in voltage-dividing capacitor, then/and generating the three-level voltage output. Secondly, the method of the combined programming of DSP and FPGA is used for the experimental platform, which realizes the reasonable distribution and...
In this paper we study some fundamental properties of QC-LDPC code, we use a recursive compression algorithm to optimize the structure of QC-LDPC code, it can effectively reduce the coding complexity, save the space which is used to storage QC-LDPC code, and don't need to reduce its error correction performance. We use VHDL language to design QC-LDPC decoder in the FPGA chip. This system was simulated...
This paper developed a novel power harmonic analyzer system based on ARM and FPGA, aiming at reducing the spectrum leakage caused by fixed-frequency sampling. It focused on the design of system architecture, preprocessing circuit, digital multiplier circuit based on FPGA. The comparison of harmonics analysis by using fixed-frequency and frequency tracking samples show that the latter can reduce spectrum...
With the increased complexity of FPGA, the process of debugging and verifying is to become the key portion of the FPGA design procedure. By concluding the applications of Virtual JTAG technology in an actual project, this paper has provided some ideas about how to use Virtual JTAG technology to do logical design and board-level debug. Facts have proved that the means based on Virtual JTAG and Tcl/Tk...
This paper presents a field programmable gate array (FPGA) prototype of a 6-digit digital clock displaying time on a four-digit seven-segment LED module. The design of the digital clock is based on the Very High Speed Integrated Circuit Hardware Description Language (VHDL) hardware description language, synthesized by the Xilinx Synthesis Technology (XST) synthesizer, and implemented per Spatan-3...
This paper adopts EP1K100QC208–3N FPGA chip as the main controller of intelligent automobile. We also added OV6620 camera module, parking space module and control of motor module. We use these modules to achieve the automatic parking system.
The multi-interface transport card is designed for equipments with different interfaces, which could realize the functions such as twisted pair transmission with LVDS level, optical-fiber transmission with LVPECL level and twisted pair transmission with RS422 level. This design can test the equipment which has the appropriate interface with the appropriate transmission mode. In the twisted pair transmission...
In this paper, a novel hyperchaotic system is designed for generating continuous and digital PN (pseudo-noise) sequences. In the design of this hyperchaotic system, its parameters are selected according to the requirements of chaos and hyperchaos. In the generation of continuous PN sequences, an analog circuit is designed and realized. The circuit parameters are determined by theoretical expressions,...
Aiming at the requirement of synchronous multichannel data acquisition in large-scale acquisition netwrok, it presents a distributed measurement and control system that is based on EtherCAT with real-time ethernet technology and distributed clock. It ensures the synchronization, timeliness and ordering of the system. And the board-level data synchronization acquisition was implemented by device selection...
The work cycle of modern radar is shorter and shorter, furthermore, the volume of data that need to be processed becomes larger and larger in a period. It is very difficult for the computer to real-time process large amounts of data and to real-time control radar. This paper proposes designing an FPGA-based co-controller between the computer and radar subsystems, in order to realize the real-time...
An important issue of through-wall radar (TWR) signals analysis is moving target detection that is the guarantee of acquiring good detecting effect. The paper illustrates a successful application of field programmable gate array (FPGA) based exponential smoothing algorithm. In order to realize real-time TWR signals analysis, some key issues are discussed such as the realization of moving targets detection,...
This paper reports the Design and Application of a New FPGA Data Acquisition System in the field of aerospace telemetry technicians. The Data Acquisition System used the Actel Anti-fuse A32200DX FPGA, and we design the program. We detailed analysis and presentation the process of control Global Clock Control and Fanout. Finally, through radiation experiment testing, Verify the effectiveness and practicality...
By measuring the resonant frequency, the silicon micro-accelerometer resonant got Instantaneous acceleration. For the frequency measurement requirements, a projection method with improved phase frequency measurement was proposed and put FPGA as a carrier in this paper. The original phase projection method has been improved in order to facilitate programming. In accordance with the improved algorithm,...
In the distributed computing environment, XML becomes the main choice as the way to transfer and store data in Web Services and distributed systems. With the development of the Web Services technique, there is a higher demand for an efficient XML message processing in some real-time systems. The XML messages are always parsed by software. Although many software-based XML processing techniques have...
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