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
- Authority
- PL
- Poland
- Prior art keywords
- pulses
- rotational speed
- series
- time
- waveform
- Prior art date
Links
- 238000005259 measurement Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 2
Landscapes
- Transmission And Conversion Of Sensor Element Output (AREA)
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)
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)
| Country | Link |
|---|---|
| PL (1) | PL73885B2 (en) |
-
1971
- 1971-09-10 PL PL15043771A patent/PL73885B2/pl unknown
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