Results 271 to 280 of about 822,450 (311)

Adrenergic regulation of the force-frequency effect

Basic Research in Cardiology, 1998
An important interaction between beta-adrenergic receptor (AR) stimulation and the myocardial contractile response to increased heart rate has only recently been identified. The effect of beta-AR stimulation to amplify the force-frequency effect is responsible for a large component of the positive inotropic effect of exercise in conscious dogs and also
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Allocation of frequency regulation services

DRPT2000. International Conference on Electric Utility Deregulation and Restructuring and Power Technologies. Proceedings (Cat. No.00EX382), 2002
A novel concept for directly quantifying the value of frequency regulation services of individual generators is proposed in this paper. Individual generator dynamics are explicitly incorporated into the optimisation problem as constraints, which allowed the frequency fluctuations to be also directly monitored and controlled. The approach eliminates the
X.P. Zhang, C.Y. Chen, Z. Zheng, G. Strbac, J. Kubokawa   +4 more
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Simultaneous Robust Regulation in the Frequency Domain*

2024 IEEE 63rd Conference on Decision and Control (CDC)
Peer ...
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Frequency Regulation by Electric Vehicle

2018 International Conference on Current Trends towards Converging Technologies (ICCTCT), 2018
Electric vehicles (EVs), connected to the grid, acts as a distributed load or distributed storage. Integration of EVs into microgrid is able to provide many services like ancillary services, active power control, reactive power compensation and specially frequency regulation.
Madhuri P. Jadhav, V. N. Kalkhambkar
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Frequency linked pricing as an instrument for frequency regulation in deregulated electricity markets

2003 IEEE Power Engineering Society General Meeting (IEEE Cat. No.03CH37491), 2004
This paper presents the design of an automatic balance service market that can act as an effective tool for system frequency control in deregulated power systems. The proposed scheme combines the presently existing manual balancing mechanism, prevailing in some countries, with the conventional automatic generation control, within a bid-based market ...
Zhong, J, Bhattacharya, K
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Regulator Design in the Frequency Domain

2018
A closed-loop control system has to meet several prescribed quality specifications, as stability, static accuracy, dynamical behavior, noise suppression, insensitivity to parameter changes, etc. These specifications can be formulated in the time and in the frequency domain.
László Keviczky, Ruth Bars, Jenő Hetthéssy, Csilla Bányász   +3 more
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Frequency encoding in renal blood flow regulation

American Journal of Physiology-Regulatory, Integrative and Comparative Physiology, 2005
With a model of renal blood flow regulation, we examined consequences of tubuloglomerular feedback (TGF) coupling to the myogenic mechanism via voltage-gated Ca channels. The model reproduces the characteristic oscillations of the two mechanisms and predicts frequency and amplitude modulation of the myogenic oscillation by TGF.
Marsh, Donald J, Sosnovtseva, Olga, Pavlov, Alexey N, Yip, Kay-Pong, Holstein-Rathlou, N.-H.   +4 more
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Regulation of System Load and Frequency

Journal of Fluids Engineering, 1940
Abstract This paper discusses the practices of the Philadelphia Electric Company system in the regulation of system load and frequency, including the scheduling and actual operation of generating capacity with regard to reliability and economy.
Herbert Estrada, H. A. Dryar
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A robust frequency compensation scheme for LDO regulators

2002 IEEE International Symposium on Circuits and Systems. Proceedings (Cat. No.02CH37353), 2003
In the frequency compensation scheme of low drop out (LDO) voltage regulators, a zero generated by the series combination of load capacitor and its electro static resistance (ESR) plays an important role. This frequency compensation tends to be inefficient, as one has to take into consideration a range of specified values for load capacitor and R/sub ...
Chaitanya K. Chava, José Silva-Martínez   +1 more
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Frequency modulated switching regulator

1979 IEEE Power Electronics Specialists Conference, 1979
A novel switching regulator power supply is de­scribed which uses frequency modulation to accom­plish duty factor control. The circuit resembles a choke-fed dc-dc converter. A distinguishing feature is that the output transformer is designed purposely to saturate.
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