Yuav ua li cas koj pom lub sij hawm thiab amplitude ntawm ib daim duab?

2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2024-01-18 08:15

Cov Lub sijhawm mus los ntawm ib lub ncov mus rau tom ntej (los yog los ntawm ib qho taw tes mus rau qhov sib piv tom ntej): Lub Amplitude yog qhov siab ntawm kab nruab nrab mus rau lub ncov (los yog mus rau lub trough).

Tam sim no peb tuaj yeem pom:

1. amplitude yog A = 3.
2. lub sij hawm luas = 2π/100 = 0.02 π
3. Theem hloov yog C = 0.01 (mus rau sab laug)
4. ntsug hloov yog D = 0.

Kuj paub, koj pom lub sijhawm ntawm daim duab li cas?

Cov lub sij hawm ntawm sine nkhaus yog qhov ntev ntawm ib lub voj voog ntawm qhov nkhaus. Lub ntuj lub sij hawm ntawm sine nkhaus yog 2π. Yog li, tus coefficient ntawm b = 1 yog sib npaug rau a lub sij hawm ua 2p. Kom tau txais cov lub sij hawm ntawm sine nkhaus rau ib qho coefficient b, tsuas yog faib 2π los ntawm cov coefficient b kom tau txais qhov tshiab lub sij hawm ntawm qhov nkhaus.

tus qauv ntawm lub sij hawm yog dab tsi? Cov qauv rau lub sijhawm yog: T ( lub sij hawm ) = 1 / f (ntau zaus). Cov qauv rau wavelength yog λ (m) = c / f. λ = c / f = nthwv dej ceev c (m / s) / zaus f (Hz). The unit hertz (Hz) ib zaug hu ua cps = cycles persecond.

Raws li txoj cai, koj ua li cas thiaj nrhiav tau kab rov tav hloov ntawm sine graph?

Los ntawm sinusoidal kev sib npaug , cov kab rov tav yog tau los ntawm kev txiav txim qhov hloov pauv tau ua rau x-tus nqi. Txoj kev yooj yim tshaj plaws los txiav txim siab kab rov tav yog txiav txim los ntawm pes tsawg units qhov "pib taw tes" (0, 0) ntawm tus qauv sine nkhaus , y = sin(x), tau tsiv mus rau sab xis lossis sab laug.

Puas yog amplitude ib txwm zoo?

Amplitude . Amplitudes yog ib txwm zoo tus lej (piv txwv li: 3.5, 1, 120) thiab tsis muaj qhov tsis zoo (piv txwv li: -3.5, -1, -120). Amplitudes yog zoo vim qhov kev ncua deb tsuas yog ntau dua xoom ore sib npaug rau xoom; tsis muaj nyob deb.