Results 251 to 260 of about 19,209 (287)

Frequency Behaviour of FeFET-Based Ultra-Low-Power Coupled Oscillator Neurons

2020 IEEE International Symposium on Circuits and Systems (ISCAS), 2020
The inefficiencies of von-Neumann computing architectures in performing high-level machine learning and neuromorphic operations have led to the need for new computational systems such as oscillatory neural networks, that are designed using emerging technologies.
Hossein Eslahi, Tara J. Hamilton, Sourabh Khandelwal   +2 more
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Limit cycle in the ultra-low-frequency oscillation of islanded power systems

2017 13th IEEE International Conference on Control & Automation (ICCA), 2017
Ultra-low-frequency oscillation with almost constant amplitude is a kind of frequency oscillation in power system. It has occurred in several hydro-dominant islanded power systems. With the nonlinearity of hydraulic turbines, a nonlinear model of power system is built in the paper.
Xiaomin Lu, Lei Chen 0063, Yiwei Zhang, Yong Min, Maohai Wang   +4 more
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Generation of ultra-low jitter radio frequency phase pulses by a phase-locked oscillator

Optics Letters, 2021
We demonstrate a novel, to the best of our knowledge, method for mode locking of an oscillator, which is based on the injection of a strong sinusoidal signal from an external source into the cavity. The oscillator generates a low phase noise carrier signal with a train of ultra-low jitter, short 2 π phase pulses at a repetition ...
Andrei Diakonov, Moshe Horowitz
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Mechanism and Measurement of Ultra-Low-Frequency Oscillations in Asynchronous Networks

2018 IEEE Power & Energy Society General Meeting (PESGM), 2018
The asynchronous interconnection mode between the Yunnan Province Power Grid and China Southern Power Grid was implemented in 2016. However, during the practical experiment of raising HVDC power in the asynchronous mode, the frequency of the Yunnan Power Grid oscillated at ultra-low frequency for a long period.
Chunxiao Liu, Jianxin Zhang, Junfeng Zhang, Chunxiao Liu   +3 more
openaire   +1 more source

Ultra Low Power Low Frequency On-chip Oscillator for Elapsed Time Counter

2019 32nd International Conference on VLSI Design and 2019 18th International Conference on Embedded Systems (VLSID), 2019
This paper presents a design of CMOS current starved inverter based oscillator which is used to drive the counters that act as a component in the elapsed time counter. A low power temperature independent biasing circuit is designed to enhance the performance meeting the frequency variations.
Sachin Kalburgi, Deven Gupta, Sampath Holi, Rohit Shetty, Shripad Annigeri, Shraddha H, Saroja V. Siddamal, Sujata S. Kotabagi, Nalini C. Iyer   +8 more
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On the Spectrum of Ultralow-Frequency Oscillations of the Ionosphere in the Pc1 Range

Izvestiya, Physics of the Solid Earth, 2023
The idea of Alfvén waves plays a key role in the theory of ultra-low-frequency (ULF) electromagnetic oscillations of cosmic origin. The article is dedicated to the 80th anniversary of the discovery of Alfvén waves. It focuses on the Ionospheric Alfvén Resonator, or IAR for short. ULF oscillations are excited in the IAR in the Pc1 range (0.2–5 Hz). When
Anatol Guglielmi, Boris Klain, Alexander Potapov   +2 more
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Emergency Control Strategy of Ultra-low Frequency Oscillations Based on WAMS

2019 IEEE Innovative Smart Grid Technologies - Asia (ISGT Asia), 2019
In this paper, an emergency control strategy of ultra-low frequency oscillations (ULFO) is presented. The multi-signal Prony algorithm is used to identify frequency signals from WAMS. Then the criterion of ULFO is proposed based on the Prony analysis results.
Qin LIU, Gang CHEN, Baisi LIU, Yudong ZHANG, Chuyu LIU, Zhuolin ZENG, Chengwei FAN, Xiaoyan HAN   +7 more
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Ultra low frequency CMOS ring oscillator design

2014 Recent Advances in Engineering and Computational Sciences (RAECS), 2014
In this paper, the concept of CMOS thyristor has been used to implement low frequency ring oscillator using 2.5 volt power-supply and 1pF load capacitance using 250nm technology. By using the conventional CMOS thyristor structure the frequency of the output sinusoidal waveform is of the order of KHz, which has been further improved in proposed CMOS ...
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Mode Identification and Damping Torque Analysis of Ultra-Low Frequency Oscillations

2019 IEEE Sustainable Power and Energy Conference (iSPEC), 2019
After the asynchronous interconnection of Yunnan and South China Power Grid, a long period of ultra-low frequency oscillation occurred, which seriously affected the safe and stable operation of the system. This paper presents the damping analysis of hydraulic turbine governing systems under ultra-low frequency oscillations.
Junfeng Zhang, Yanjun Zhao, Yanhui Xu, Zhen Li, Wei Bai   +4 more
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Ultra-Low-Frequency, Three-Phase Oscillator

Proceedings of the IRE, 1954
This paper describes the design of a three-phase oscillator covering the range from 0.01 to 1,000 cycles per second. The problems peculiar to this frequency range, and their solutions, are discussed. Certain advantages inherent in three-phase operation are explained.
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