3.1 m (. ). MATLAB, , . :
,
/2, /
θ , , sin θ = θ. .
3.2 , , , . m = 4,5 , k = 175 /, f = 0,3. :
,
.
3.3 , , , . (Oledzki A., Dynamics of Piano Mechanisms, Mech. and Mach. Theory, No 7, 1972, pp. 373385) :
,
.
1 , 2 , F , . :
m1 = 0,0074 , a = 0,406 , b = 18,3 /, k 1 = 1,16∙104 /, k 2 = 0,525∙106 /2, k 3 = 1,1∙108 /2, 0 < F < 80 .
MATLAB, F = 80 .
3.4 :
,
Q , /; Q , /; , o; t , .
, d .
0 ,
d = 22 , , c.
3.5
.
, , .
MATLAB y (x), :
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.