APPENDICE B : Ricerca della funzione di

(1)

APPENDICE B : Ricerca della funzione di

trasferimento della servovalvola DDV

(2)

!

"

! # $ %

" $& '( &!

# " )

Risposta in frequenza in open loop della DDV hardware

-35 -30 -25 -20 -15 -10 -5 0 5

0.1 1 10 100

Frequenza [Hz]

Fase [db]

-180

-135

-90

-45

0

Ampiezza [deg]

DDV OL 1V [db] DDV OL 2V [db] DDV OL 3V [db] DDV OL 1V [deg] DDV OL 2V [deg] DDV OL 3V [deg]

! " " #! "$

(3)

#

DDV Open Loop

(1 V) Hardware

DDV Open Loop (2 V) Hardware

DDV Open Loop (3 V) Hardware n° Freq [Hz] Amp [db] Ph [deg] Amp [db] Ph [deg] Amp [db] Ph [deg]

1 0.35 -2.15 -17.95 -0.33 -12.17 0.80 -10.47

2 0.40 -2.13 -19.32 -0.31 -12.79 0.82 -10.97

3 0.47 -2.12 -19.64 -0.31 -13.30 0.82 -11.54

4 0.54 -2.11 -20.24 -0.32 -14.06 0.81 -12.32

5 0.63 -2.11 -20.92 -0.34 -14.91 0.79 -13.20

6 0.73 -2.14 -21.99 -0.37 -16.00 0.73 -14.33

7 0.85 -2.16 -23.10 -0.41 -17.19 0.70 -15.53

8 0.99 -2.19 -24.25 -0.45 -18.49 0.64 -16.93

9 1.15 -2.25 -25.70 -0.50 -19.98 0.56 -18.46

10 1.33 -2.30 -27.29 -0.58 -21.67 0.46 -20.20

11 1.54 -2.37 -28.54 -0.67 -23.66 0.33 -22.24

12 1.79 -2.49 -31.29 -0.80 -25.88 0.18 -24.50

13 2.08 -2.60 -33.65 -0.95 -28.42 -0.01 -27.10 14 2.41 -2.78 -36.31 -1.14 -31.24 -0.23 -29.95 15 2.80 -3.00 -39.40 -1.39 -34.29 -0.51 -33.16 16 3.25 -3.27 -42.44 -1.65 -37.85 -0.83 -36.66 17 3.77 -3.61 -46.35 -2.00 -41.69 -1.21 -40.59 18 4.38 -4.01 -50.43 -2.40 -45.88 -1.66 -44.82 19 5.08 -4.52 -54.68 -2.88 -50.36 -2.18 -49.35 20 5.90 -5.09 -59.42 -3.44 -55.23 -2.78 -54.26 21 6.85 -5.77 -64.51 -4.08 -60.47 -3.46 -59.48 22 7.95 -6.58 -69.59 -4.82 -65.97 -4.22 -64.97 23 9.22 -7.42 -75.49 -5.66 -71.77 -5.07 -70.71 24 10.71 -8.38 -81.51 -6.59 -77.82 -6.02 -76.58 25 12.42 -9.44 -88.47 -7.63 -84.11 -7.06 -82.74 26 14.42 -10.62 -95.55 -8.77 -90.57 -8.20 -88.82 27 16.74 -11.99 -102.88 -9.98 -97.47 -9.40 -95.15 28 19.42 -13.48 -110.58 -11.31 -104.20 -10.66 -101.73 29 22.56 -14.97 -119.82 -12.71 -111.82 -11.99 -108.68 30 26.14 -16.75 -129.19 -14.13 -119.09 -13.36 -115.74 31 30.38 -18.77 -139.42 -15.64 -127.48 -14.79 -123.46 32 35.29 -20.53 -151.26 -17.20 -136.74 -16.24 -131.87 33 40.96 -22.58 -165.03 -18.80 -146.96 -17.69 -140.46 34 47.43 -25.48 -179.83 -20.50 -158.68 -19.00 -150.84

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(4)

$ 3

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Risposta in frequenza in open loop della DDV (ampiezza = 1V)

-35 -30 -25 -20 -15 -10 -5 0 5

0.1 1 10 100

Frequenza [Hz]

Fase [db]

-180

-135

-90

-45

0

Ampiezza [deg]

DDV OL 1V [db] DDV OL 3° ord [db] DDV OL 1V [deg] DDV OL 3° ord [deg]

( " #! "$ & " !" "

&* " " ! " ! $ " +

(5)

'

-35 -30 -25 -20 -15 -10 -5 0 5

0.1 1 10 100

Frequenza [Hz]

Fase [db]

-180

-135

-90

-45

0

Ampiezza [deg]

, " #! "$ & " !" "

&* " " ! " ! $ " +

-35 -30 -25 -20 -15 -10 -5 0 5

0.1 1 10 100

Frequenza [Hz]

Fase [db]

-180

-135

-90

-45

0

Ampiezza [deg]

- " #! "$ & " !" "

(&* " " ! " ! $ " +

(6)

&

4 " "

# % ./! )

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66% 0 *

# %

$ %

# % ./!

0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9

0.9 1 1.1 1.2 1.3 1.4 1.5

1.6 Incremento del guadagno

Xv [mm]

GI

1 2 ./!

(7)

1

Risposta in frequenza in open loop della DDV (fdt+look-up table, ampiezza = 1V)

-35 -30 -25 -20 -15 -10 -5 0 5

0.1 1 10 100

Frequenza [Hz]

Fase [db]

-180

-135

-90

-45

0

Ampiezza [deg]

3 " #! "$ & " "

&* " " ! " ! $ " +

-35 -30 -25 -20 -15 -10 -5 0 5

0.1 1 10 100

Frequenza [Hz]

Fase [db]

-180

-135

-90

-45

0

Ampiezza [deg]

4 " #! "$ & " "

&* " " ! " ! $ " +

(8)

(

-35 -30 -25 -20 -15 -10 -5 0 5

0.1 1 10 100

Frequenza [Hz]

Fase [db]

-180

-135

-90

-45

0

Ampiezza [deg]

5 " #! "$ & " " (

&* " " ! " ! $ " +