bai tap tong hop khi nen thuy luc

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  • Khoa in - in t H THNG KH NN, THU LC

    1

    BI TP TNG HP

    Bi tp1:

    H thng 01 xilanh tc dng n vi cc yu cu cng ngh:

    + Dng kp chi tit khi gia cng, lc kp cn thit n 1000N, p sut ngun

    6bar

    + Dng van o chiu 3/2 iu khin mt pha bng kh nn hoc in t;

    + C th iu chnh tc tu khi Piston i ra; li v tng tc bng van x

    nhanh

    Yu cu:

    - Chn xi lanh ( kiu, din tch tc dng/ng knh piston, m s, n gi)

    - Chn van ( kiu, cc thng s p sut, lu lng)

    - Thit k iu khin bng hai phng n: kh nn; in- kh nn

    vi mch t duy tr; piston i ra bng nt n START, i v bng nt n STOP;

    Bi tp 2: Thit k iu khin bng hai phng n: kh nn; in kh nn

    H thng 01 xilanh tc dng kp vi cc yu cu:

    + Xi lanh c din tch piston l 80 cm2, lc y cn thit 1000N, tc y

    0.02m/s

    + C th iu chnh tc khi Piston i ra; li v cn tng tc dng van x nhanh.

    c th iu khin piston ra vo ti hai v tr vi mch t duy tr; piston i ra bng

    nt n START, i v bng nt n STOP;

    Yu cu:

    - Chn xi lanh ( kiu, m s, n gi)

    - Chn ngun kh nn

    - Dng van o chiu 5/2 iu khin mt pha, tnh lu lng cn thit qua van,

    chn van ( kiu, cc thng s p sut, lu lng)

    - Thit k iu khin bng hai phng n: kh nn; in- kh nn

    Bi tp 3:

    H thng c biu hnh trnh bc ( hnh 1) cho:

    + Khi dng xi lanh tc dng n, dng van o chiu

    iu khin mt pha hoc hai pha.

    + Khi dng xi lanh tc dng kp, dng van o chiu

    iu khin mt pha hoc hai pha.

    Yu cu: Thit k iu khin bng hai phng n: kh nn; in kh nn

    Hnh 1

  • Khoa in - in t H THNG KH NN, THU LC

    2

    Bi tp 4:

    H thng c biu hnh trnh bc ( hnh 2),

    Yu cu:

    Thit k iu khin bng hai phng n: kh nn; in

    kh nn cho cc trng hp:

    - Xi lanh tc dng n

    - Xi lanh tc dng kp.

    Bi tp 5:

    Mt thit b khuy nguyn liu s dng Motor kh nn dng xoay (gc quay 0-270o) c

    m t bng biu hnh trnh bc v s h thng kh nn cha hon thin ( hnh 3)

    4 2

    5

    1

    3

    46%

    46%

    V 2

    1 M

    V 3

    V 1

    Motor

    12S0

    3=1

    S1

    S2t

    t

    Hnh 3

    Yu cu:

    - Hon thin s iu khin bng kh nn

    - Thit k iu khin bng in kh nn

    Bi tp 6:

    Mt thit b lp rp chi tit c biu hnh trnh bc

    (hnh 4).

    Yu cu cng ngh: Hnh trnh thc hin lp chi tit

    c la chn c tc . Hnh trnh rt v c tc

    c tng cng ti a tng nng sut

    Yu cu:

    Thit k iu khin bng hai phng n: kh nn; in

    kh nn.

    1A

    12S0

    3=1

    S1

    S2

    t

    P

    Hnh 4

    Hnh 2

  • Khoa in - in t H THNG KH NN, THU LC

    3

    Bi tp 7:

    V li k hiu, gi tn y v nu chc nng ca cc phn t kh nn sau y :

    1 2 3 4 5

    2

    1 3

    2

    1 3

    2

    1 3

    6 7 8 9 10

    1

    2

    3

    1 1

    2

    40%

    2

    1 3

    P = 6bar

    Bi tp 8:

    Mt h thng kh nn mt xi lanh n, van iu khin mt pha. Hy v s nguyn l h thng, iu khin bng kh nn vi nhng yu cu sau:

    - Cu trc iu khin t duy tr - Tc piston i ra c th iu chnh c - Piston rt v c tng cng tc bng van x nhanh

    Bi tp 9:

    Mt h thng kh nn mt xi lanh n, van iu khin mt pha. 1. Hy v s nguyn l h thng, iu khin bng in - kh nn vi nhng yu cu sau

    - Cu trc iu khin t duy tr - Tc piston i ra c th iu chnh c - Piston rt v c tng cng tc bng van x nhanh

    2. Nu ng knh xi lanh D = 2.5cm, ph ti nh mc vi P = 6 bar, c vn tc 0.5m/s th lu lng kh nn phi bng bao nhiu lt/pht?

    Bi tp 10:

    V li k hiu, gi tn y v nu chc nng ca cc phn t kh nn sau y

    1 2 3 4 5 2

    1 3

    2

    1 3

    4 2

    5

    1

    3

    6 7 8 9 10

    1

    2

    3

    1 1

    240%

    4 2

    5

    1

    3

    P = 6bar

  • Khoa in - in t H THNG KH NN, THU LC

    4

    Bi tp 11:

    Mt h thng kh nn mt xi lanh tc dng kp, van iu khin mt pha. Hy v s nguyn l h thng, iu khin bng kh nn vi nhng yu cu sau:

    - Cu trc iu khin t duy tr - Tc piston i ra c th iu chnh c - Piston rt v c tng cng tc bng van x nhanh

    Bi tp 12:

    Mt h thng kh nn mt xi lanh tc dng kp, van iu khin mt pha. 1. Hy v s nguyn l h thng, iu khin bng in - kh nn vi nhng yu

    cu sau: - Cu trc iu khin t duy tr. - Tc piston i ra c th iu chnh c. - Piston rt v c tng cng tc bng van x nhanh.

    2. Nu ng knh xi lanh D = 2.5cm, ph ti nh mc vi P = 6 bar, lu lng kh nn Q= 14.7 l/pht th vn tc ca piston bng bao nhiu ?

    Bi tp 13:

    V li k hiu, gi tn y v nu chc nng ca cc phn t kh nn sau y

    1 2 3 4 5 2

    1 3

    2

    1 3

    4 2

    5

    1

    3

    6 7 8 9 10

    1

    2

    3

    40%

    1 1

    2

    59%

    2

    1

    12

    3

    4 2

    5

    1

    3

    Bi tp 14:

    Mt h thng kh nn s dng mt xi lanh kp, van iu khin hai pha. Hy m t bi

    ton iu khin bng biu hnh trnh bc vi nhng yu cu cho trc: - Cu trc iu khin t ng theo hnh trnh v thi gian.

    - Piston dng li v tr cui cng ca hnh trnh mt thi gian bng 5s ri t ng li v.

    - C th khi ng hai ni

    Bi tp 15:

    1. Hy thit lp s nguyn l h thng iu khin 01 xi lanh kp c yu cu : - Cu trc iu khin bng kh nn t ng theo hnh trnh v thi gian.

  • Khoa in - in t H THNG KH NN, THU LC

    5

    - Piston dng li v tr cui cng ca hnh trnh - thi gian bng 5s ri t ng li v.

    - C th khi ng hai ni 2. Hy thit lp s nguyn l h thng trn iu khin bng in kh nn

    Bi tp 16:

    V li k hiu, gi tn y v nu chc nng ca cc phn t kh nn sau y:

    1 2 3 4 5 2

    1 3

    2

    1 3

    4 2

    5

    1

    3

    6 7 8 9 10

    1

    2

    3

    40%

    1 1

    22

    12 1

    3

    4 2

    5

    1

    3

    Bi tp 17:

    Mt h thng kh nn c 01 xi lanh kp, van iu khin hai pha. Hy m t bi ton iu

    khin bng biu hnh trnh bc vi nhng yu cu cho trc: - Cu trc iu khin t ng theo p sut.

    - C th khi ng hai v tr. - C th iu khin Piston li v bt k v tr no trn hnh trnh

    Bi tp 18:

    Mt h thng kh nn c 01 xi lanh kp, van iu khin hai pha. 1. Hy thit k iu khin bng kh nn vi nhng yu cu cho trc :

    - Cu trc iu khin t ng theo p sut. - C th khi ng bng nt n hoc bn p

    - C th iu khin Piston li v bt k v tr no trn hnh trnh - Tc piston i ra c th iu chnh c.

    2. Hy thit k iu khin bng in- kh nn vi nhng yu cu nh trn ( s dng cc nt n)

  • Khoa in - in t H THNG KH NN, THU LC

    6

    Bi tp 19:

    Cho mt h thng kh nn c s nguyn l nh hnh v bn.

    - Hy m t nguyn l hot ng v chc nng ca cc phn t cu thnh h thng - M t hot ng ca h

    thng theo s .

    Bi tp 20:

    Cho h thng iu khin bng in kh nn nh hnh v bn 1. Hy thit lp s h thng iu khin bng hon ton bng kh nn, b sung thm 01 van x nhanh, 01 tit lu

    2

    1 3

    +24V

    0V

    START K1

    K1

    STOP K1

    Y

    Y

    1 2 3

    2

    3

    Bi tp21:

    Mt h thng kh nn mt xi lanh c biu hnh trnh bc nh hnh v bn

    Hy thit lp s iu khin hon ton bng kh nn

    2

    12 1

    3

    4 2

    5

    1

    34

    4%

    1

    2

    3

    1 1

    2

    2

    1 3

    2

    1 3

    A

    S 1 S 2

    V 1 V 2

    V 3

    V 4 V 5

  • Khoa in - in t H THNG KH NN, THU LC

    7

    Bi tp 22:

    Cho mt h thng kh nn c s nguyn l nh hnh v bn

    Hy m t nguyn l hot ng v chc nng ca cc phn t cu thnh h thng

    4 2

    5

    1

    3

    44

    %

    1

    2

    3

    1 1

    2

    2

    1 3

    2

    1 3

    A

    S 1 S 2

    V 1V 2

    V 3

    V 4 V 5

    56%

    2

    1

    12

    3

    2

    1 3

    S3

    S 3

    S3

    Bi tp 23:

    V v m t cu trc chung ca mt h thng iu khin hon ton bng kh nn.

    Bi tp24:

    Cho mt h thng kh nn c s nguyn l nh hnh v bn.

    1. Hy m t bng biu hnh trnh bc 2. Chuyn v s iu

    khin bng in kh nn

    2

    12 1

    3

    4 2

    5

    1

    3

    44

    %

    1

    2

    3

    1 1

    2

    2

    1 3

    2

    1 3

    A

    S 1 S 2

    V 1 V 2

    V 3

    V 4 V 5

  • Khoa in - in t H THNG KH NN, THU LC

    8

    Bi tp 2 5:

    V v m t cu trc chung ca mt h thng iu khin bng in - kh nn.

    Bi tp 26:

    Cho s nguyn l h thng

    iu khin bng kh nn nh hnh v bn

    Hy m t li bng biu hnh trnh bc

    S2

    1

    2

    3

    31%

    4 2

    5

    1

    3

    2

    1 3

    2

    1 3

    1 1

    2

    1 1

    2

    2

    1 3

    S2

    2

    1 3

    S 1 S 3 S 4

    Bi tp 27:

    Cho s nguyn l h thng

    iu khin bng kh nn nh

    hnh v bn

    1. Hy m t bng biu hnh trnh bc 2. M t nguyn l hot ng ca cc phn t cu thnh h thng

    Bi tp 28:

    Cho s cng ngh ca thit b p nguyn liu nh hnh v Vi nhng yu cu:

    - Chu trnh p c din ra t ng bng mt nt n, h thng c khi ng t xi lanh 1A

    - im kt thc hnh trnh ca 1A s dng cng tc hnh trnh iu khin cho 2A

    - Kim tra lc p thng qua p sut trong xi lanh 2A

    - Kt thc qu trnh p 1A v 2A cng li v.

    Hy v biu hnh trnh bc.

    Nguyn liu vo

    2

    1 3

    S2

    S2 S3

    4 2

    5

    1

    3

    2

    1 3

    2

    1 3

    2

    1 3

    S3

    S 1

    1 A 2 A

  • Khoa in - in t H THNG KH NN, THU LC

    9

    Bi tp 29:

    Thit lp s nguyn l h thng iu khin bng kh nn cho thit b