PL73885B2 - - Google Patents

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Publication number
PL73885B2
PL73885B2 PL15043771A PL15043771A PL73885B2 PL 73885 B2 PL73885 B2 PL 73885B2 PL 15043771 A PL15043771 A PL 15043771A PL 15043771 A PL15043771 A PL 15043771A PL 73885 B2 PL73885 B2 PL 73885B2
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PL
Poland
Prior art keywords
pulses
rotational speed
series
time
waveform
Prior art date
Application number
PL15043771A
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Polish (pl)
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Priority to PL15043771A priority Critical patent/PL73885B2/pl
Publication of PL73885B2 publication Critical patent/PL73885B2/pl

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Description

Równoczesnie ze zliczaniem impulsów ciagu w liczniku 2 uklad badania wartosci ekstremalnych 4 bada odstepy czasowe T pomiedzy sasiednimi impulsami w aiagu i okresla ich wartosc maksymalna Tmaxj i mini¬ malna Tniim dla i tego odstepu zliczania Ti Przy pomiarze wedlug wynalazku, zaleznosc drogi od czasu, aproksymuje sie, co przedstawiono na fig. 2, krzywa lamana 5, podczas gdy jej przebieg obrazuje krzywa 6.W przypadku idealnego pomiaru, co przedstawiono na rysunku, fig. 3 realna predkosc obrotowa 7 uzysku¬ je sie w wyniku analogowego rózniczkowania krzy¬ wej 6.Amplituda próbki uwidoczniona na rysunku, fig. 3 — prostym odcinkiem pionowym 8 odipowiadajaca liczbie Di zliczanych w odstepie czasowym t impulsów jest proporcjonalna do sredniej predkosci obrotowej co i na odstepie czasowym t, gdzie 60 T obr. 1 ©i = -—m\ . jn » t L min J 4 N — liczba impulsów wytwarzanych przez przetwornik w ciagu jednego obrotu.Na podstawie pomierzonej liczby impulsów nj i od¬ stepów czasowych ekstremalnych Tmaxi i Tminj mozna 5 obliczyc strefe niepewnosci 9 przebiegu predkosci, przed¬ stawiona na rysunku, fig. 3, ograniczona przez wartosci ekstremalne Tminj i Tmaxj bledu dynamicznego 8 dla tego odstepu zliczania wedlug wzoru. 10 T _ t • J min ~ Wi max 15 PL PLSimultaneously with the counting of the pulses of the sequence in the numerator 2, the extreme value test system 4 examines the time intervals T between adjacent pulses in the aiag and determines their maximum value Tmaxj and minimum Tniim for i this count interval Ti. As shown in Fig. 2, the broken curve 5, while its course is illustrated by the curve 6. In the case of an ideal measurement, as shown in Fig. 3, the real rotational speed 7 is obtained by analogue differential curve 6 The sample amplitude shown in the drawing, Fig. 3 - by a straight vertical segment 8, corresponding to the number Di of pulses counted in the time interval t is proportional to the average rotational speed co i on the time interval t, where 60 T rpm. 1 © i = -—m \. jn »t L min J 4 N - the number of pulses produced by the transducer during one revolution. On the basis of the measured number of pulses nj and the extreme time steps Tmaxi and Tminj, it is possible to calculate the uncertainty zone 9 of the velocity waveform, shown in the figure, fig. 3, limited by the extreme values Tminj and Tmaxj of the dynamic error 8 for this count interval according to the formula. 10 T _ t • J min ~ Wi max 15 PL PL

Claims (2)

1. Zastrzezenia patentowe 1. Sposób pomiaru przebiegu chwilowej predkosci obrotowej, znamienny tym, ze dwukrotnie przetwarza sie rodzaj przebiegu z wielkosci mechanicznej jaka 20 jest predkosc obrotowa (a), pierwszy raz na ciag elek¬ trycznych impulsów korzystnie unipolarnych za posred¬ nictwem przetwornika obrotowo-impulsowego (1) o du¬ zej liczbie impulsów (N) na obrót i drugi raz z ciagu elektrycznych impulsów na ciag próbek cyfrowych wzic- 25 tych w odpowiednich odstepach czasowych (x) oraz na elektryczny przebieg analogowy (co(t)) bedacy odpowied¬ nikiem mechanicznego przebiegu chwilowej predkosci obrotowej.1. Claims 1. Method for measuring the waveform of the instantaneous rotational speed, characterized in that the type of waveform is processed twice from a mechanical quantity which is the rotational speed (a), for the first time into a series of electric pulses, preferably unipolar by means of a rotary transducer. - pulse (1) with a large number of pulses (N) per revolution and the second time from a series of electric pulses on a series of digital samples taken at appropriate time intervals (x) and on an electric analog wave (co (t)) being equivalent to the mechanical course of the instantaneous rotational speed. 2. Sposób wedlug zastrzezenia 1, znamienny tym, ze 30 odbywa sie równoczesny pomiar w bloku (4) okreslania wartosci ekstremalnych — wartosci maksymalnych (Tmax.) i minimalnych (Tmini) odstepów czasowych po¬ miedzy sasiednimi impulsami (nj w czesci ciagu przy¬ padajacej na odstep czasowy (n). i73885 Itt «'-H- / z — r /W/7/, 7/ttty z ' wi i ^ —^ & f/g./ Rg.2 Fig.3 PL PL2. Method according to claim 1, characterized in that a simultaneous measurement is carried out in the block (4) for determining the extreme values - the maximum (Tmax.) And minimum (Tmini) values of time intervals between adjacent pulses (nj in part of the sequence) falling on the time interval (n). i73885 Itt «'-H- / z - r / W / 7 /, 7 / ttty z' wi i ^ - ^ & f / g. / Rg.2 Fig.3 PL EN
PL15043771A 1971-09-10 1971-09-10 PL73885B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL15043771A PL73885B2 (en) 1971-09-10 1971-09-10

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PL15043771A PL73885B2 (en) 1971-09-10 1971-09-10

Publications (1)

Publication Number Publication Date
PL73885B2 true PL73885B2 (en) 1974-10-31

Family

ID=19955566

Family Applications (1)

Application Number Title Priority Date Filing Date
PL15043771A PL73885B2 (en) 1971-09-10 1971-09-10

Country Status (1)

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PL (1) PL73885B2 (en)

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