In this paper, a real-time Digital Signal Processing (DSP) architecture is proposed to generate and process multi-frequency signals for eddy currents testing. This architecture was implemented on a dedicated instrumen...
详细信息
ISBN:
(纸本)9781467346214
In this paper, a real-time Digital Signal Processing (DSP) architecture is proposed to generate and process multi-frequency signals for eddy currents testing. This architecture was implemented on a dedicated instrument whose processing core is a field-programmable gate array (FPGA) for DSP purposes. Stimulus generation is achieved using Direct Digital Synthesis (DDS) with some improvements to remove spurious frequency components. An In-phase and Quadrature (IQ) demodulation scheme is implemented to estimate the real and imaginary part of the probes output signals. A Cascaded Integrator Comb (CIC) decimator is used to lower the sampling frequency allowing narrowband IIR filtering using low resources. The proposed architecture is able to generate and process the stimulus and input data at 125 MSamples/s and to estimate the input data components at 1.25 MSamples/s rate for frequencies between 50 kHz and 10 MHz.
In this paper, we present a fast and efficient scalable holographic video processor using a layer-based method, which employs a modified inverse Fresnel transform. To verify the performance of the proposed architectur...
详细信息
In this paper, we present a fast and efficient scalable holographic video processor using a layer-based method, which employs a modified inverse Fresnel transform. To verify the performance of the proposed architecture, we design a single-layered holography core using a fixed-point model and test its performance on a field-programmable gate array. The implemented real-time hologram processor features a 1k × 1k size fast Fourier transform and a 30 frames/sec conversion rate in 4K color spatial light modulators after applying 2× linear interpolation. All real-time images on computer screens, such as YouTube and movies, are converted into holograms within 22 ms.
CORRIGENDUM A hybrid swarm intelligence of artificial immune system tuned with Taguchi–genetic algorithm and its field-programmable gate array realization to optimal inverse kinematics for an articulated industrial r...
详细信息
CORRIGENDUM A hybrid swarm intelligence of artificial immune system tuned with Taguchi–genetic algorithm and its field-programmable gate array realization to optimal inverse kinematics for an articulated industrial robotic manipulatorOwing to errors made by the authors, Hsu-Chih Huang, Sendren Sheng-Dong Xu & Chang Han Wu, the following article is incorrect:Huang, H C, Xu, S S and Wu, C H (2016) A hybrid swarm intelligence of artificial immune system tuned with Taguchi–genetic algorithm and its field-programmable gate array realization to optimal inverse kinematics for an articulated industrial robotic manipulator Advances in Mechanical Engineering published 22 January 2016. doi: https://***/10.1177/1687814015626380
暂无评论