何怡刚
个性化签名
- 姓名:何怡刚
- 目前身份:
- 担任导师情况:
- 学位:
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学术头衔:
博士生导师
- 职称:-
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学科领域:
电工学
- 研究兴趣:
1996年6月毕业于西安交通大学并获博士学位,1999年6月破格晋升为教授,2000年遴选为博士生导师,2002年4月-10月为英国Hertfordshire大学高级访问学者。现为湖南大学电气工程一级博士点学科和博士后科研流动站学术带头人、湖南省重点建设学科电工理论与新技术博士点学科学术带头人、中国武汉理论电工学会常务理事、湖南省电机工程学会理事、 湖南省理论电工专委会主任、电路与系统学报编委、全国信息与电子学科研究生教育书系编委、湖南大学出版社电气信息类教材编审会常务副主任、湖南大学第四届学位评定委员会委员、湖南大学第六届学术委员会委员,曾担任国际传输级自动测试与可测试性设计学术会议(IEEE Int.Conf. RTL ATPG & DFT‘2000)程序委员会委员;国际系统、控制与信息学术会议(Int.MultiConf On SCI’2001,2002,2003(Florida, USA))程序委员会委员和分会主席,主持专题“信息处理与故障诊断“(2001年)、“模拟信号处理、VLSI设计与混合信号电路故障诊断”(2002年)、 “信号处理与VLSI设计”(2003年);国际权威学术刊物IEEE Trans. Circuits and system ?CI,II、 IEE proc. Circuits Devices and Systems 、 Int. Journal of Electronics 、IEE Electronics Letters、 IEEE J.ASIC及国内著名学报《中国电机工程学报》、《电子学报》、《电子与信息学报》、《半导体学报》、《电路与系统学报》等特邀通讯评审专家。近几年来,主持和完成了国家自然科学基金、高等学校博士学科点专项基金、中加、中英国际合作及部省基金等22项课题的研究,在《IEEE Trans. CAS-I》、《IEE Proc. CDS》、《IEEE J.ASIC》、《J.Electronics》、《Chinese J.Electronics》、《Analog Integrated Circuit & Signal Processing》、《中国电机工程学报》、《电子学报》、《通信学报》、《电子与信息学报》、《半导体学报》、《电路与系统学报》等国内外重要学术刊物和IEEE国际学术会议上发表学术论文240余篇,被三大检索刊物《SCI》、《EI》、《ISTP》收录和引用论文100余篇/次;已鉴定成果2项,且均居国际先进水平;获省部级科技进步奖2项。在模拟集成电路、滤波器理论与设计方面,主要完成了18脚SLIC芯片、SA512芯片、ADSL芯片、144脚MCU芯片、8位 、10位 、12位ADC、DAC、3阶 Butterworth 滤波器 、4阶Chebyshev 滤波器 、带隙基准电源、LNA、VCO、PLL等芯片的研发、设计及流片。2001年获教育部霍英东基金会优秀青年教师(研究类)三等奖,2004年获湖南省青年科技创新杰出奖,教育部新世纪优秀人才支持计划、湖南大学首届撷英计划和湖南省“121”人才工程人选。指导培养出21名硕士和2名博士,目前指导在读硕士生27人、博士生16人。
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4177
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成果阅读
837
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成果数
10
何怡刚, 江金光, 吴杰, 蔡国昌
电子学报,1999,27(11):021~023,-0001,():
-1年11月30日
提出了两种通用有源电流模式滤波器:1.用两个电流传送器(CCII)实现的电流模式三输入单输出二阶滤波器新电路,选择不同的输入信号组合即能获得低通、高通、带通、陷波和全通五种二阶滤波函数;2.由CCII和多输出端跨导运算放大器(OTA)实现的单输入多输出滤波器新电路。所提电路结构简单、中心频率ω0和品质因数Q独立可调、无源元件全部接地,滤波器特性参数对无源元件灵敏度低。理论分析和计算机仿真表明所提电路方案正确。
电流模式电路, 电流传送器, 跨导运算放大器, 有源滤波器
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何怡刚, 吴杰, 蔡国昌**, 罗先觉, 邱关源***
电路与系统学报,1997,2(1):031~035,-0001,():
-1年11月30日
本文提出了一种新的利用跨导运放OTA精确实现电压-电流型硬限幅函数神经元方法,它的主要特点是容易实现、且神经元的输出幅值可调。本文所提的基于OTA的硬限幅函数神经元(简称OHL)非常适合于求解L1问题的神经网络跨导模式综合实现。实例和计算机仿真结果与理论分析相吻合。
神经元,, 神经网络实现,, 跨导,, L1范数问题
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259浏览
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【期刊论文】Data Mining-Based Fault Detect And Diagnosis For The Video Amplifier Circuit
何怡刚, LU Xiangdong, HE Yigang
Proceedings of the 2003 IEEE Intemational Conference on Robotics, Intelligent Systems and Signal Processing Changsha, China-October 2003,-0001,():
-1年11月30日
According to the principle of fault detect and diagnosis, this paper presents a new technology of data mining to deal. with a lot of data got from fault detection and diagnosis. A method using database technology to solve fault detection and diagnosis is developed.
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何怡刚, LIANG Gechao, He Yigang
Proceedings of the 2003 IEEE International Conference on Robotics, Intelligent Systems and Signal Processing Changsha, China-October 2003,-0001,():
-1年11月30日
A fault identification approach for nonlinear analogue systems is presented. A fuzzy neural network is developed based on the improving fuzzy weighted reasoning method. The training of network weights and optimization of membership functions are conducted employing genetic algorithms. Fuzzy rules can be realized through the refresh of the weights of the neural network. The availability of the method is examined by simulated test examples.
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【期刊论文】Universal Current-Mode Filter With Three Inputs Using CCII+/-*
何怡刚, Jinguang Jiang, Yigang He, Jie Wu
,-0001,():
-1年11月30日
A universal current-mode filter with three inputs using CCII+/-is pressented. This filter which possesses three inputs and one output can generate all biquadratic filtering functions of lowpass, highpass, bandpass, notch and allpass at the output terminate by selecting different input signal combinations of three inputs. The filter has the followng merits: it uses only three CCII+/-, three grounded resistors and three grounded capacitors which makes it not only suitable for integrated circuit implementation, but also independent control of ω0, Q, no matching condition is required. offering multifunction output, and has low passive and active senstivities and cascadability. Its structure is simple than that designed by C. M. Chang and P.C. Chen[7].
Current-mode, Current conveyors, Universal filter
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【期刊论文】LOW-VOLTAGE/LOW-POWER INSTANTANEOUS COMPANDING CIRCUITS FOR CONTINUOUS WAVELET TRANSFORM
何怡刚, Qingxiu Huang, Yigang He
IEEE Int. Conf. Neural Networks & Signal Processing Nanjing, China, December 14-17, 2003,-0001,():
-1年11月30日
A general scheme for the VLSI implementation of high-frequency continuous wavelet transform is developed using instantaneous companding technique to get an elegant solution to the problem of maintaining dynamic range and high frequency operation under low power supply voltages. An analogue BiCMOS high-frequency continuous wavelet transform circuit presented in this paper performs a time-frequency decomposition of a high-frequency input signal. The design and implementation of element circuits including voltage-controlled oscillator (VCO), phase-locked loop (PLL) using static and dynamic translinear circuits are also described in detail.
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【期刊论文】CLASS-BASED NEURAL NETWORK METHOD FOR FAULT LOCATION OF LARGE-SCALE ANALOGUE CIRCUITS
何怡刚, Yigang He, , Yanghong Tan, and Yichuang Sun
,-0001,():
-1年11月30日
A new method for fault diagnosis of large-scale analogue circuits based on the class concept is developed in this paper. A large analogue circuit is decomposed into blocks/sub-circuits and the nodes between the blocks are classified into three classes. Only those sub-circuits related to the faulty class need to be, treated. Node classification reduces the scope of search for faults, thus reduced after-test time.' The proposed method is more suitable for real-time testing and can deal with both hard and soft faults. Tolerance effects are taken into account in the method. The class-based fault diagnosis principle and neural network based method are described in some details. Two non-trivial circuit examples are presented, showing that the proposed method is feasible.
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【期刊论文】Wavelet neural network approach for fault diagnosis of analogue circuits
何怡刚, Y. He, Y. Tan and Y. Sun
IEE Proc.-Circuits Devices Syst., Vol. 151, No.4, August 2004,-0001,():
-1年11月30日
A systematic method for fault diagnosis of analogue circuits based on the combination of neural networks and wavelet transforms is presented. Using wavelet decomposition as a tool for removing noise from the sampled signals, optimal feature information is extracted by wavelet noise removal, multi-resolution decomposition, PCA (principal component analysis) and data normalisation. The features are applied to the proposed wavelet neural network and the fault patterns are classified. Diagnosis principles and procedures are described. The reliability of the method and comparison with other methods are shown by two active filter examples.
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何怡刚, Y.He and Y.Sun
IEE Proc.-Circuits Devices Syst., Vol. 148, No.4, August 2001,-0001,():
-1年11月30日
The paper deals with fault isolation in nonlinear analogue circuits with tolerance under an insufficient number of independent voltage measurements. The L1-norm optimisation problem for different scenarios of nonlinear fault diagnosis is formulated with a new fast method being presented. How to solve the L1-norm optimisation problem is discussed and a new neural network-based approach for solving the nonlinear constrained L1-norm optimisation problem is proposed and utilised in locating the most likely faulty elements in nonlinear circuits. The validity of the proposed method is verified and simulation examples are presented.
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【期刊论文】A Low Distortion Wide Tuning Range CMOS Fully-Differential Fourth-Order Bessel Filter
何怡刚, YIGANG HE, , JINGUANG JIANG AND YICHUANG SUN
Analog Integrated Circuits and Signal Processing, 41, 55-63, 2004,-0001,():
-1年11月30日
A fully differential R-MOSFET-C fourth-order Bessel active low-pass filter employing passive resistors and current-steering MOS transistors as a variable resistor is proposed. The implementation relies on the tunability of the current-steering MOS transistors operating in the triode region which counteract the deviation of resistors in integrated circuit manufacturing technology in order that the group delay of the Bessel active filter can be realized accurately. A 0.75 us group delay 520kHz frequency fourth-order Bessel lowpass filter based on a passive doubly terminated RLC prototype was designed and fabricated using 3.3V power supply and 0.35um CMOS technology. Chip test results demonstrate better than -65dB THD with @ 100kHz, 1.65-Vpp signal, frequency tuning range of more than ten decades from 0.6kHz to 550kHz, chip area of 0.32mm2 and power consumption of 13.3mW.
active filters,, continuous-time filters,, group delay,, analog circuits,, CMOS circuits
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