Impact of Controller Clock Error on Emission in Supraharmonic Caused by Converters

Author(s):  
Qing Zhong ◽  
Ming Liang ◽  
Fuqiang Chen ◽  
Yangxin Qiu ◽  
Qingtian Luo ◽  
...  
Keyword(s):  
Positioning ◽  
2014 ◽  
Vol 05 (01) ◽  
pp. 22-26 ◽  
Author(s):  
Bharati Bidikar ◽  
Gottapu Sasibhushana Rao ◽  
Laveti Ganesh ◽  
MNVS Santosh Kumar

Metrologia ◽  
2001 ◽  
Vol 38 (4) ◽  
pp. 325-342 ◽  
Author(s):  
F Vernotte ◽  
J Delporte ◽  
M Brunet ◽  
T Tournier

1919 ◽  
Vol 38 ◽  
pp. 75-114 ◽  
Author(s):  
R. A. Sampson

The studies of which the present paper is the first are intended to accumulate observations and discussions on all necessary points connected with exact time-keeping, such as the maintenance of motion, air-resistance, barometric error, escapement error, temperature compensation, and so forth. It may be taken that no clock so far made behaves uniformly so as to keep regular time. The clock is one of the fundamental measuring instruments of astronomy, but astronomical practice has kept in advance of the precision reached by its clocks by determining the clock error in the midst of each set of observations and so dispensing with the need for carrying forward for any length of time a doubtful clock rate. But there are many reasons why we should not be content with this, which amounts to an elimination of the clock. In the first place, it is not always feasible.


1996 ◽  
Vol 172 ◽  
pp. 113-116
Author(s):  
Kevin D. Pang ◽  
Kevin K. Yau

Long planetary and lunar ephemerides like the JPL DE102 and LE51 (Newhall et al., 1983) and the Bureau des Longitudes VSOP (Bretagnon, 1982) and ELP (Chapront-Touze and Chapront, 1983) have enabled more positive ancient eclipse, planetary and cometary identifications, which have in turn refined ephemerides, e.g., the reconstruction of the orbit of comets Halley and Swift-Tuttle (Yeomans and Kiang, 1981; and Yau et al., 1994). The data used to initialize DE102 are pre-1977. Much more observational data have been collected since. The lunar ephemeris has also been improved. The secular lunar acceleration, , from laser ranging, is −25.9±0.5″/cen2 (Williams et al., 1992). We can now uniquely solve for ΔT, the clock error, from ancient eclipse records. The lack of ΔT values before 700 B.C. has left the early timescale of the ephemerides unconstrained (Morrison, 1992). Our solution of this problem is outlined here.


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