Ch.1 Electric Circuit Analogy of Mechanical system and Acoustical system

 

•Mechanical ;  Vibration velocity (v) & force (f)           Electric current(i)

                                                          &

•Acoustical ;  Volume velocity (u) & pressure (p)          voltage (v)           

 

∙They have same differential egs? → electric circuit analysis

 

∙The size of elements  λ → lump circuits

 

1-1 Analogy of Mechanical system and Electrical system

 

Electric devices ;  R , L , C , e

k

ξ

f

 

A) Compliance ; Cm                         

 

Mech. ; Hook’s Law for a spring

                                                                      < Fig 1.1 >

F = kξ                           ∙∙∙∙∙∙∙∙∙∙∙∙∙(1.1)

K ; spring const. → stiffness [N/m]

ξ ; displacement [m]

Cm    [m/N]

∴ f =  =               ∙∙∙∙∙∙∙∙∙∙∙∙∙(1.2)

V ;  particle velocity (=dξ/dt)

i

 

Elecrt. ; e = ξ =        ∙∙∙∙∙∙∙∙∙∙∙∙∙(1.3)

C

e

           g : electric charge [C]      

 C : capacitance [F]  

                     

 

교수님 얘들 강의하는거 강의자료만든다고 만드신거 내가 워드로친다...

 

왜케많니...