共查询到20条相似文献,搜索用时 109 毫秒
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主要讨论了在定点DSP处理器上实现数字滤波器。分析了数字滤波器系数量化的影响,对滤波器的不同实现结构进行了MATLAB仿真分析和实际DSP滤波效果比较。研究结果表明,在滤波器系数以同样的精度量化条件下,用级联Ⅱ型结构实现的IIR数字滤波器其滤波效果要明显优于用直接Ⅱ型结构实现的IIR数字滤波器。前者不仅有更好的幅频响应精度而且还能有效防止运算结果溢出,保持滤波器的稳定。 相似文献
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FIR数字滤波器的MATLAB设计与DSP实现 总被引:7,自引:0,他引:7
针对有限长冲激响应(FIR)数字滤波器的原理,讨论了窗函数法设计线性相位FIR数字滤波器的基本思路,介绍了用MATLAB工具来设计数字滤波器的方法及在定点DSP上的实现。通过CCS5000开发工具和在TMS320VC5416评估板上运行,实现了达到目标要求的滤波器。 相似文献
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基于Matlab/Simulink的FIR数字滤波器的设计与实现 总被引:2,自引:0,他引:2
提出了一种采用Matlab/Simulink新技术实现数字滤波器的设计方案.介绍了现代一种新的DSP设计工具DSP Builder及其应用.给出了基于FPGA的FIR数字滤波器的实现流程,并以一个16阶的低通FIR数字滤波器为例,采用DSP Builder建立了实现模型.最后,给出了仿真波形. 相似文献
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江炜宁 《国外电子测量技术》2007,26(4):18-20
本文首先简述了分辨率和中频滤波器概念,然后详细描述了数字中频滤波器的实现原理,最后介绍了数字中频滤波器在DSP芯片TMS320C6701上的运用.实际应用结果说明,数字中频滤波器比模拟滤波器在可实现最小分辨率带宽、滤波器波形因子、测量速度等方面都具有很大的优势. 相似文献
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鉴于IIR数字滤波器设计本质上是一个多参数非线性复杂函数优化问题,提出应用具有全局搜索能力强,收敛速度快特点的克隆选择算法优化IIR数字滤波器的相关参数,进而形成一种新的IIR数字滤波器优化设计方法。给出了IIR滤波器优化设计的数学模型,描述了应用克隆选择算法优化设计IIR数字滤波器的具体实现步骤,并通过低通和高通IIR数字滤波器设计的仿真结果表明该方法的有效性和高效性。 相似文献
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鉴于IIR数字滤波器设计本质上是一个多参数非线性复杂函数优化问题,提出应用具有全局搜索能力强,收敛速度快特点的克隆选择算法优化IIR数字滤波器的相关参数,进而形成一种新的IIR数字滤波器优化设计方法.给出了壬||[滤波器优化设计的数学模型,描述了应用克隆选择算法优化设计IIR数字滤波器的具体实现步骤,并通过低通和高通IIR数字滤波器设计的仿真结果表明该方法的有效性和高效性. 相似文献
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在线数字滤波器就是采集模拟信号进行数字化后,送人DSP进行滤波处理,再实时输出滤波后的模拟信号的一个系统。从滤波器的技术指标出发,运用MATLAB软件设计FIR滤波器的参数,使用汇编语言编写DSP处理器的FIR数字滤波器程序和AD/DA转换器接口程序,实现了一个在线FIR数字滤波器。通过了软件仿真和硬件在线调试,给出了实验波形。 相似文献
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提出了一种利用数字滤波器对交流信号数据采集系统幅值和相位误差进行自动调整的新方法。给出了实现幅值和相位误差自动调整的数字滤波器数学模型,并结合具体实例介绍了数字滤波器的设计步骤。仿真结果证实了算法的有效性。 相似文献
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S. Y. Wu B. N. Tran F. Y. Davis C. L. Trent D. L. Edberg W. A. Geideman 《Integrated ferroelectrics》2013,141(3):281-291
Abstract Smart materials of lead-zirconate-titanate (PZT) piezoelectric ceramics have attracted attention in recent years for active vibration control, acoustic noise suppression, health monitoring and damage assessment. We at McDonnell Douglas Aerospace have been studying these ceramics for use as sensors and actuators in various space and aircraft structures. In this paper, we will report results of a recent study on active vibration control using monomorph PZT actuators. The experiments were performed on thin aluminum cantilever beams. Collocated and non-collocated sensors and actuators were employed. Two control techniques: the classical velocity feedback and adaptive feedback controls, were investigated. We have obtained significant damping and broadband vibration attenuation of greater than 30 dB using the classical control with the single-input single-output feedback approach. A 24 dB reduction has also been achieved using the adaptive control with the multiple-input single-output approach. Detailed experimental methods and results will be described. 相似文献
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特高压线路工频参数测试干扰分析是选择适合工频参数测试方法及测试结果分析的重要基础。测试了1 000 kV皖南-浙北特高压线路正序和零序参数测试期间的干扰电压信号,分析了其频谱特征;在此基础上,通过与正序参数仿真计算值的对比分析了正序参数实际测试偏差。结果表明:皖南-浙北特高压同塔双回线路工频参数测试期间,干扰电压存在“三相不平衡性及时变性”的特点;工频法和异频法2种不同方法得到的线路参数测试结果存在一定差异;干扰电压“时变”时,线路工频参数测试宜采用异频法。 相似文献
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Abstract This paper has described a new concept on programmable switch device furnished with gain cell combined to FeRAM. Compared with memories but ferroelectric memories under many aspects, they have even been favorably labeled the ideal memory because of their non-volatility, ease of programming and operation by low voltage. As the programming switch, which is very attractive for logic application, SRAM, anti-fuse, flash type devices are well known. They have been required that satisfy non-volatility and low-voltage programming simultaneously. Some structures with ferroelectric material have been proposed and studied as solution of these problems. However, it seemed hard that these type devices are realized now from a viewpoint of fabrication process and low voltage operation. Therefore, we propose a new switch device furnished with gain cell combined to FeRAM. We have studied and simulated this switch device by SPICE. This basic circuit is composed of two blocks. One is switching block that includes gain cell, and the other is memory block that is FeRAM. Circuits, which we designed, amplify bit line's voltage up to Vdd or ground at sense amplification according to FeRAM data. The bit line voltage determines the logic state for gate electrode of switch transistor. The way to read is destructive read out. However, we can transfer information of bit line voltage during plate line is low-level voltage. The way to write FeRAM is similar to conventional way. It is revealed that the basic circuit with FeRAM connected gain cell could work correctly in simulation. In addition, this kind of device is hopeful of many logic applications. 相似文献
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Judith Schwartz 《The Electricity Journal》2018,31(9):34-37
Rate design serves objectives of cost recovery, market animation, and customer incentives. Yet in the quest to find the ‘perfect equitable rate,’ many rate designers and pilots overlook the diversity of consumer attitudes. AMI enables not only interval monitoring and controls, it allows alternative pricing plans, payment options, device adoption, and generation mixes reflecting individual priorities. Connecting consumer attitudes with a portfolio approach helps regulators and utilities achieve specific goals while improving satisfaction and engagement. 相似文献
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加密技术是用于构建安全W eb应用程序的重要技术。阐述了加密技术的概念、几种主要的加密技术方法和应用范围,重点解析了国家电网公司电子公文安全传输系统采用硬软件加密技术相结合的方法,基于全程加密机制,实现公文从制作、传输到管理的全过程的安全保护,以及该系统应用情况。 相似文献
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1000 kV GIS变电所VFTO特性研究 总被引:28,自引:10,他引:18
为确保特高压输电工程的安全可靠,结合我国特高压输电试验示范工程计算分析了GIS和HGIS变电所的特快速瞬态过电压(VFTO)。研究表明,GIS变电所隔离开关开合短线时可能产生高达3p.u.左右的VFTO,对GIS本体绝缘和二次设备可能构成危害。研究了GIS隔离开关装并联分合闸电阻对限制VFTO的作用后,建议GIS变电所采用并联分合闸电阻(约500Ω),提出了并联分合闸电阻的相关参数的建议值;GIS变电所中的主变压器和GIS是经架空线相连接,在变压器上的VFTO不高;HGIS变电所中的VFTO不高,在允许范围内,其隔离开关可不装并联分合闸电阻。 相似文献