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Model predictive torque control for PMSM with duty ratio optimization
2011 International Conference on Electrical Machines and Systems, 2011This paper presents the application of model based predictive torque control (MPTC) with duty ratio optimization for permanent magnet synchronous motor (PMSM) drives. By using MPTC, significant reduction in torque and flux ripples can be achieved by selecting the voltage vector best satisfying the demands of torque and flux.
Tianshi Wang +2 more
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Stored-duty-ratio control for power factor correction
APEC '99. Fourteenth Annual Applied Power Electronics Conference and Exposition. 1999 Conference Proceedings (Cat. No.99CH36285), 1999Control units for power factor rectifiers based on continuous-mode boost converters usually require a large amount of calculation power. This makes digital control solutions expensive at present. This contribution deals with the theory, the design, and the dynamic behavior of a control unit that uses the stored-duty-ratio (SDR) control method.
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Improvement of Rayleigh criterion with duty ratio characterization for subwavelength lithography
Journal of Vacuum Science & Technology B: Microelectronics and Nanometer Structures Processing, Measurement, and Phenomena, 2004In this article, we have systematically investigated the dependencies of k1 on illumination conditions such as coherence setting and opening angle in off-axis illumination scheme. As result, conventional Rayleigh’s equations are not sufficient to address the effect of the numerical aperature and coherence on the depth of focus.
Chua, G.S., Tay, C.J., Quan, C., Lin, Q.
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Methane Emission Ratios from Light Duty Vehicles in Brazil
SAE Technical Paper Series, 2013<div class="section abstract"><div class="htmlview paragraph">It is common the development of greenhouse gas (GHG) emissions inventories, by private and public organizations. They are used as starting point for policy makers in their efforts on the mitigation of greenhouse gas emissions.
Vanderlei Borsari, Rui de Abrantes
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Effect of duty ratio of line and space in phase-shifting lithography
SPIE Proceedings, 1993This paper discusses the effect of duty ratio of line and space patterns and the coherency of illumination for the projection system on the lithographic characteristics, which must be taken into consideration in designing LSI patterns with an alternated type phase-shifting method.
Junji Miyazaki +5 more
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Analysis of Power Cells with Duty-Ratio Control at Variable Frequency
1991In this chapter we shall analyze four power cells that use duty-ratio control at variable frequency. The first is the so-called Porter cell, a member of the current-fed converter family. (Practical current-fed converters have an inductor in series with the supply voltage.
André S. Kislovski +2 more
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Duty ratio compensator techniques for bidirectional charger
2014 IEEE International Conference on Industrial Technology (ICIT), 2014Jung-Goo Hwang +5 more
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Research on sampling duty ratio in interrupted sampling repeater jamming
Interrupted sampling repeater jamming (ISRJ) is an effective jamming method in modern electronic countermeasures, but its sampling duty ratio (SDR) should be no more than 50%. This paper proposes a distributed interrupted sampling repeater jamming solution to settle this problem based on the basic principle of the ISRJ. The simulation results show thatJianchi Qi +3 more
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