2011-ei-圆弧形柔性铰链柔度计算公式的推导与结构优化设计
supported by the NSFC project (No. 50805008)
Derivation of the 3recise &alculation )ormula of
&ompliance and 2ptimal 'esign�of &ircular )lexure
+inge
XIE Zhiyong , QIU Lifang , BIAN Xinxiao , DUAN Lei
School of Mechanical Engineering
University of S...
supported by the NSFC project (No. 50805008)
Derivation of the 3recise &alculation )ormula of
&ompliance and 2ptimal 'esign�of &ircular )lexure
+inge
XIE Zhiyong , QIU Lifang , BIAN Xinxiao , DUAN Lei
School of Mechanical Engineering
University of Science and Technology Beijing
Beijing,100083,China
yongzi86@163.com qlf@me.ustb.edu.cn
Abstract—Choosing and designing of the flexure hinges are the
keys for the compliant mechanisms.This paper deduced the
precise calculation formula of the compliance of circular flexure
hinge. The structure of flexure hinge in the fully compliant
micro-mechanisms of five-link was optimized with optimization
toolbox of MATLAB. The performance of the mechanism was
improved after optimization.
Keywords- flexure hinge; compliance; MATLAB; optimization
ᓻᔶᶨᗻ䫄䫒ᶨᑺ㊒⹂䅵ㅫ݀ᓣⱘᇐϢ㒧ᵘӬ࣪䆒䅵
ᵘӊϢ䖤ࡼࡃᰃᵘ៤ᴎᵘⱘᴀܗ㋴DŽϢӴ㒳ᴎᵘϡ
ৠˈᶨᗻᴎᵘᇚӴ㒳ⱘ䖤ࡼࡃ⫼ϢПⳌᇍᑨⱘᶨᗻ䫄䫒ᴹ
ҷ᳓ˈᑊᇚᵘӊϢᶨᗻ䫄䫒䲚៤Ўϔԧ࣪ⱘ㒧ᵘˈ䗮䖛ᶨ
ᗻ䫄䫒ⱘᔍᗻবᔶᅲ⦄ᖂᇣⱘ䖤ࡼDŽᶨᗻ䫄䫒ᰃܼᶨᗻᴎ
ᵘⱘ䞡㽕㒘៤䚼ߚˈ᳝ԧ⿃ᇣǃ᮴ᴎẄᨽ᪺ǃ᮴䯈䱭ǃ
䖤ࡼ♉ᬣᑺ催ǃᇐ㊒ᑺ催ㄝ䇌⡍⚍ˈ㊒ᆚᴎẄǃ㊒
ᆚ⌟䞣ǃᖂ㒇㉇ᡔᴃㄝ乚ඳᑨ⫼ᑓ⊯ˈᑊ㦋ᕫњࠡ᠔᳝
ⱘ催㊒ᑺ〇ᅮᗻ[1-3]DŽ�
ᶨᗻ䫄䫒Ўᶨᗻᴎᵘⱘ݇䬂䚼ӊˈⳈᕅડⴔᴎᵘ
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ᗻ䫄䫒ⱘᗻ㛑Џ㽕ࣙᣀᶨᑺǃ㊒ᑺǃᑨㄝᮍ䴶ˈ݊Ёᶨ
ᑺࣙᣀࡳ㛑ᮍⱘᶨᑺ䴲ࡳ㛑ᮍⱘᶨᑺ[4]DŽ�
ᶨᗻ䫄䫒ⱘᶨᑺ⡍ᗻ㸼⼎Ўᶤ⚍ᮑࡴऩԡ᠔ᓩ䍋
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㛑ᮍⱘᶨᑺ䍞䍞དˈ䴲ࡳ㛑ᮍ᳝䕗ᇣⱘᶨᑺDŽ⬅
Ѣᶨᗻᴎᵘᰃ䗮䖛ᶨᗻ䫄䫒ⱘবᔶᴹᅲ⦄䖤ࡼⱘˈℸᶨ
ᗻ䫄䫒ⱘ乍ᗻ㛑Ёᶨᑺᗻ㛑䴲ᐌ䞡㽕DŽ�
ᶨᗻ䫄䫒ⱘ㊒ᑺ⡍ᗻ㸼⼎Ў䕀ࡼЁᖗأ⿏݊ॳԡ㕂ⱘ
أ⿏䞣ˈأ⿏䞣䍞ᇣ㊒ᑺ䍞催DŽ䆒䅵䖛Ёˈ㊒ᑺ㽕⒵
䎇ϔᅮⱘ㽕∖DŽ�
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᭛⤂>�@ҹޣᇣᑨЎӬ࣪Ⳃᷛˈᇍᶨᗻ䫄䫒䖯㸠њ
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ᗻᴎᵘ䖯㸠њӬ࣪DŽᴀ᭛ᇐњᓻᔶᶨᗻ䫄䫒ᶨᑺ䅵ㅫ
݀ᓣˈᑊҹᖂൟᇍ⿄ܼᶨᗻѨᴚᴎᵘЁⱘᶨᗻ䫄䫒Ў՟ˈ
ᓎゟњᶨᗻ䫄䫒ⱘӬ࣪ൟ�߽⫼ MATLAB Ӭ࣪Ꮉㆅˈ
ᇍᶨᗻ䫄䫒䖯㸠Ӭ࣪DŽ�
I. ᓻᔶᶨᗻ䫄䫒㒩 Z䕈䕀ࡼᶨᑺⱘ䅵ㅫ݀ᓣⱘᇐ
1 㸼ᯢњᶨᗻ䫄䫒ⱘԩ㒧ᵘDŽᶨᗻ䫄䫒ⱘԩሎ
ᇌЎ䭓ᑺ lǃ᳔ᇣ८ᑺ tˈᆑᑺ wҹঞߛࡆᓻⱘञᕘ rDŽ
ᶨᗻ䫄䫒ᎺッফⶽЎ zM ˈ؛䆒ᶨᗻ䫄䫒ⱘেッЎᅮ
ッˈ߭ᶨᗻ䫄䫒ᎺッⱘবᔶЎ zθ DŽ 2 Ўᓻᔶᶨᗻ䫄䫒
ⱘᑇ䴶ൟDŽ
ᶨᗻ䫄䫒⊓ z 䕈ᮍⱘ䕀ࡼᶨᑺᰃ䆒䅵ᶨᗻ䫄䫒᳔䞡
㽕ⱘখ᭄DŽ䅵ㅫᶨᗻ䫄䫒⊓ z 䕈ᮍⱘ䕀ࡼᶨᑺᯊˈ⬅Ѣ
ᶨᗻ䫄䫒ⱘবᔶ䲚Ёᶨᗻ䫄䫒ⱘᓻ䚼ߚˈ᠔ҹᗑ⬹ᶨ
ᗻ䫄䫒ᓻҹⱘবᔶDŽ
1 ᓻᔶᶨᗻ䫄䫒ⱘԩ㒧ᵘ
978-1-4244-8039-5/11/$26.00 ©2011 IEEE
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)(xyy = )(xθθ = ˈ݊㒩 z 䕈ⱘᔃⶽЎ zM ˈ߭⬅ᴤ
᭭ᄺⶹ䆚ৃⶹ˖�
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ⶽ˗�
⬅Ѣᶨᗻ䫄䫒ⱘ䭓ᑺ l Ⳍᇍ↨䕗ᇣˈৃҹ䅸Ў⫼
ᶨᗻ䫄䫒ܼ䚼䭓ᑺϞⱘ zM ব࣪ϡˈᇚ zM ⳟᐌ᭄
M ˈᬙ˖�
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ᇍѢᓻൟᶨᗻ䫄䫒ˈ݊ᶨᑺЎ˖�
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z ³=== 0 3max )]([ 112θθ ���������������
ᇚᓣ���ҷܹᓣ˄�˅ᑊ߽⫼ mathematica ⿃ߚᕫࠄ
ᓻᔶᶨᗻ䫄䫒ᶨᑺⱘ㊒⹂㸼䖒݀ᓣЎ˖�
2 2 2 2 2 2 2
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2
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[ (4 )]
l t r t r t r rt t rt t l r l
t r t rt t l
r l r t l r tc
Ew t r t rt t l t r t rt t l
l r tr r t
t r t t r t r l
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° + + + + + + + −
+ + +
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= + +®
+ + + + + +
+
+ +
+ + −+
+
½°° °° °° °° °¾° °° °° °° °° °¯ ¿
(6)
II. ᓻᔶᶨᗻ䫄䫒ⱘӬ࣪䆒䅵
� ᠔⼎ⱘᖂൟᇍ⿄ܼᶨᗻѨᴚᴎᵘˈℸ㒧ᵘЁᶨᗻ
䫄䫒ⱘᔶᓣЎᓻᔶDŽᴚ � ᴚ � ফࠄ䲚Ё䕑㥋 F2 F5
䗮䖛ᇍ䆹ᴎᵘϸ䖍ᮑࡴ䕑㥋ᴹᅲ⦄ N ⚍ԡ⿏ⱘ䕧ߎDŽ�
��ᖂൟᇍ⿄ܼᶨᗻѨᴚᴎᵘঞ݊ফ�
䆹ᴎᵘⱘᴀሎᇌབ㸼 � ᠔⼎ˈ㸼Ё l1~ l5 ߚ߿㸼⼎
ᴚ 1~ᴚ 5 ⱘ䭓ᑺˈw 㸼⼎ᴎᵘⱘᆑᑺˈlˈt ߚ߿㸼⼎䫄䫒
ⱘ䭓ᑺǃ᳔ᇣ८ᑺDŽ�
㸼 ��ᖂൟᇍ⿄ܼᶨᗻѨᴚᴎᵘⱘᴀሎᇌ�
ᵘӊᴚ䭓˄μm˅ ᶨᗻ䫄䫒ሎᇌ˄μm˅
l1 l2= l5 l3= l4 l t w
1610 500 880 200 20 75
�
߽⫼ ANSYS ᅠ៤ᖂൟᇍ⿄ܼᶨᗻѨᴚᴎᵘⱘᓎˈ
ᇍᴎᵘ䖯㸠䴭ᄺߚᵤˈߚᵤ䕑㥋⫼ϟᴎᵘⱘবᔶDŽ⬅
Ѣᴎᵘᰃᇍ⿄ⱘˈℸপϔञ䖯㸠䴭ᄺߚᵤDŽᔧᮑࡴ
�����1 ⱘ⫼ᯊˈᴎᵘⱘবᔶབ � ᠔⼎DŽ⬅ � ৃ
ⶹˈℸᯊᴎᵘ 1 ⚍ⱘԡ⿏Ў ������ȝmDŽЎњᅲ⦄ 1 ⚍ⱘ
䕧ߎԡ⿏ˈᇍ䫄䫒䖯㸠Ӭ࣪䆒䅵DŽ�
1
MN
MXX
YZ
-.26111
.784972
1.831
2.877
3.923
4.969
6.015
7.061
8.108
9.154
SEP 28 2010
16:34:45
NODAL SOLUTION
STEP=1
SUB =1
TIME=1
UX (AVG)
RSYS=0
DMX =9.154
SMN =-.26111
SMX =9.154
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Ӭ࣪ൟⱘᓎゟ�
˄�˅䆒䅵ব䞣�
ᶨᗻ䫄䫒ⱘᴤ᭭ԩ㒧ᵘᰃއᅮᶨᗻ䫄䫒ᗻ㛑ⱘ݇
䬂㋴DŽᴀ᭛؛䆒ᶨᗻ䫄䫒ⱘᴤ᭭Ꮖ㒣⹂ᅮˈेᔍᗻ䞣
E ᆚᑺ ȡ Ꮖⶹˈᇍ݊㒧ᵘখ᭄䖯㸠Ӭ࣪䆒䅵DŽᓻᔶᶨ
ᗻ䫄䫒㒧ᵘখ᭄བ 1 ᠔⼎ˈ rˈtˈw ߚ߿㸼⼎ᶨᗻ䫄䫒
ⱘञᕘǃ᳔ᇣ८ᑺϢᆑᑺˈ䫄䫒ⱘ䭓ᑺЎ lDŽ⹂ᅮᓻᔶ
ᶨᗻ䫄䫒ⱘ䆒䅵ব䞣Ў˖X=[x1ˈx2ˈx3]=[rˈtˈl]DŽ
˄�˅Ⳃᷛߑ᭄�
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㛑ˈгԧ⦄њ䖤ࡼࡃⱘᶨᗻᑺˈᰃЏ㽕ⱘⷨお㋴DŽ�
䕑㥋⫼ϟˈᶨᗻ䫄䫒᠔ѻ⫳ⱘ㒩 z 䕈ⱘ䕀ࡼᰃ
៥Ӏ᠔䳔㽕ⱘ䖤ࡼˈ䍞㸼⼎݊ᶨᑺ䍞དˈℸᏠᳯ䍞
䍞དDŽℸ⹂ᅮӬ࣪䆒䅵ⱘⳂᷛߑ᭄Ў˖�
�����������
c
XF 1)(min = �����������������������
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˄3˅㑺ᴳᴵӊ�
ķ 䖍⬠㑺ᴳᴵӊ
min max
min max
min max
min max
l l l
r r r
t t t
w w w
≤ ≤° ≤ ≤°® ≤ ≤°° ≤ ≤¯
(8)
⬅ 2 ৃҹᕫࠄ rˈtˈl ϝ㗙П䯈ⱘ݇㋏Ў˖
2 2 2( ) ( )
2 2
h t lr r−− + = (9)
ĸ ᗻ㛑㑺ᴳ
ᇍѢᖂൟᇍ⿄ܼᶨᗻѨᴚᴎᵘˈ䫄䫒ⱘফབ 3 ᠔⼎ˈ
⬅Ѣ䫄䫒ফࠄᔃⶽⱘ⫼ˈ⬅ᴤ᭭ᄺৃᕫߎ݊⫼ⱘॅ䰽⚍Ў
᳔ᇣ䴶˄x=l/2˅䖍㓬Ϟⱘᶤϔ⚍ˈ݊Ёϔջফࠄᢝᑨˈϔ
ջফࠄय़ᑨDŽॅ䰽⚍໘ⱘᔃ᳆ℷᑨЎ˖
( )
(10)b
o
M
I
σ =
ᓣЁ� ( ) ( )
2y
lM M z F b= = + üü䆹⚍໘ⱘᔃⶽ˗��
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3
( ) 12o
wtI = üü῾䴶ᇍЁᗻ䕈ⱘᛃᗻⶽDŽ��
᠔ҹᕫࠄ᳔ℷᑨЎ˖�
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6 ( )
2y
b
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k
wt
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+
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8
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+
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⹂ᅮӬ࣪䆒䅵ⱘᗻ㛑㑺ᴳᴵӊЎ˖�
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max
1 0
σ
σ
− ≥ �������������������������
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III. MATLAB Ӭ࣪䖛ᅲ⦄
MATLAB Ӭ࣪Ꮉㆅ�optimization toolbox�ᰃѢⳌ
ᑨ MATLAB ⠜ᴀⱘ䴶᳔Ӭ࣪䯂乬∖㾷ⱘϧ⫼Ꮉㆅˈ
᳝ϔ㋏߫ⱘӬ࣪ㅫ⊩ߑ᭄ˈᇍѢ䴲㒓ᗻ㑺ᴳ᳔Ӭ࣪䯂
乬ˈৃҹՓ⫼ MATLAB Ӭ࣪ᎹㆅЁⱘ fmincon ߑ᭄䖯
㸠∖㾷DŽ MATLAB Ӭ࣪ᎹㆅЁˈ᳝㑺ᴳⱘ䴲㒓ᗻ᳔
ᇣ࣪ߑ᭄ fmincon ⱘ᭄ᄺൟ䞛⫼ҹϟᔶᓣ㸼⼎˖�
�����������
°°
°°
¯
°°
°°
®
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=
≤
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beqxAeq
bxA
xCeq
xCts
xf
)(
)(
0)(
)0(..
)(min
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ᓣЁ )(xf ЎⳂᷛߑ᭄˗ lbbeqbx ,,, ub Ў䞣˗
A Aeq Ўⶽ䰉˗ )(xC )(xCeq ߚ߿㸼⼎䴲㒓ᗻϡㄝ
ᓣ㑺ᴳ䴲㒓ᗻㄝᓣ㑺ᴳ˗�
ᇍѢᴀ᭛ⷨおⱘᖂൟᇍ⿄ܼᶨᗻѨᴚᴎᵘˈ䆒䅵ⱘሎ
ᇌᑨ⒵䎇ࡴᎹЁᖗᷛޚⱘࡴᎹᎹ㡎⌕ˈ䖭ḋৃҹᦤ催఼
ӊࡴᎹⱘ៤ક⥛ˈ䰆ℶ䆒䅵఼ӊⱘࡴᎹᎹ㡎⌕㽕∖䍙ߎ
њᅲ偠ᅸⱘᅲ䰙ࡴᎹ㛑㗠ՓࡴᎹ༅䋹DŽ݊㒧ᵘ䆒䅵খ᭄
гফࠄ䰤ࠊˈৠᯊḍᗻ㛑㽕∖⹂ᅮӬ࣪ሎᇌ㣗ೈDŽ
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ᇍѢᓻᔶᶨᗻ䫄䫒ˈ݊Ӭ࣪ൟЎ˖�
3
2 2 2
1min ( )
2 0
6501 02.7 5.4( 0.325)(500 )
8
100( ) ( )
2 2
160
20
f x
c
l r
t
t r l
r t
t lr r
r
t
=°°
− ≤°°°
− ≤
+°
+ +®
+°
−°
− + =°°
≤°° ≤¯
(14)�
MATLAB にষЁ䕧ܹҹϟᑣ˖�
clear all;clc;
format long
x0=[145,20,200];
lb=[145,5,180];
ub=[160,14,210];
[x,fval]=fmincon(@mubiaofun,x0,[ ],[ ],[ ],[ ],lb,ub,@no
nlincon)
䖤㸠ҹϞᑣˈᕫࠄⱘӬ࣪㒧ᵰབ㸼 2 ᠔⼎DŽ⬅㸼 2
ৃⶹˈӬ࣪ৢ䫄䫒ⱘᶨᑺᕫࠄњᦤ催DŽ
㸼 2 ᶨᗻ䫄䫒Ӭ࣪ࠡৢሎᇌঞᗻ㛑ᇍ↨
খ᭄ ߱ྟؐ Ӭ࣪ৢⱘؐ
r/ȝm 145 149.6
t/ȝm 20 14
l/ȝm 200 210
ᶨᑺ(c)/rad/N*m 0.007 41 0.023 97
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ḍӬ࣪ৢⱘ䫄䫒ሎᇌˈ ANSYS Ёˈᇍᖂൟᇍ⿄
ܼᶨᗻѨᴚᴎᵘ䖯㸠䞡ᮄᓎゟൟˈᑊ䖯㸠䴭ᄺߚᵤˈ
ᮑࡴⳌৠⱘ䕑㥋������1�ˈᕫࠄᴎᵘⱘবᔶབ � ᠔⼎DŽ
⬅ � ৃⶹˈӬ࣪ৢᴎᵘ N ⚍ԡ⿏Ў �������ȝmDŽ㗠Ӭ
࣪ПࠡˈᮑࡴⳌৠ䕑㥋ᯊˈᴎᵘ N ⚍ⱘԡ⿏Ў 9.154 ȝmˈ
ৃ㾕ˈӬ࣪ৢᴎᵘⱘᗻ㛑ᕫࠄњᦤ催DŽ
1
MN
MXX
YZ
-1.099
3.288
7.675
12.062
16.449
20.836
25.223
29.61
33.997
38.384
SEP 26 2010
09:20:24
NODAL SOLUTION
STEP=1
SUB =1
TIME=1
UX (AVG)
RSYS=0
DMX =38.384
SMN =-1.099
SMX =38.384
5 Ӭ࣪ৢ 0.02N ⱘ䕑㥋⫼ϟᴎᵘⱘবᔶ
IV. 㒧䆎
(1) ᇐњᓻᔶᶨᗻ䫄䫒ᶨᑺⱘ㊒⹂䅵ㅫ݀ᓣDŽ
(2)ҹᦤ催ᶨᗻ䫄䫒ⱘ䕀ࡼᗻ㛑ЎⳂᷛˈᓎゟњᶨᗻ䫄
䫒Ӭ࣪䆒䅵ⱘ᭄ᄺൟˈᇍᓻᔶᶨᗻ䫄䫒䖯㸠њӬ࣪ˈ
Ӭ࣪ৢ䫄䫒ⱘᶨᑺᕫࠄњᦤ催DŽ
(3)ҹᖂൟᇍ⿄ܼᶨᗻѨᴚᴎᵘЎ՟ˈ䖤⫼ ANSYS ᇍ
݊䖯㸠䴭ᄺߚᵤˈ䗮䖛ᇍᴎᵘӬ࣪ࠡৢ N ⚍䕧ߎԡ⿏ⱘ
↨䕗ˈ㸼ᯢ䫄䫒Ӭ࣪ৢᴎᵘⱘᗻ㛑ᕫࠄњᦤ催DŽ
References
[1] Huang J Y㧘Wei Y D㧘Zhang W.Optimal design of the flexure
hinge parameter based on space micro-displacement worktable.Mech
Electr Eng Mag,2006,23(1):55.( in chinese)
[2] Lobontiu N㧚Design of symmetric conic㧚section flexure hinges based
on closed-form compliance equations㧚Mech Mach Theory㧘2002㧘
37(5)㧦47.
[3] Lobontiu N㧘Paine J SN㧘O’MalhyE㧘et a1.Parabolic and hyper-bolic
flexure hinges::flexibility㧘motion precision and stress char· acterization
based on compliance closed-form equations㧚 Precis Eng㧘 2002㧘
26(2):183.
[4] DU Z J㧘DONG W㧘SUN L N.Flexure hinge and its application in
precision parallel manipulators 㧚 Journal of Harbin Institute of
Technology㧚2006㧘9:1469-1473㧚(in chinese)
[5] CHEN G M㧘JIA J Y㧘LIU X Y㧘GOU Y J㧚Study on the accuracy
of flexure hings. Chinese journal of scientific instrument㧚2004㧘
4:107-109㧚(in chinese)
[6] ZHOU W W㧘HE G P㧚Optimizing flexure hings of a planar full
compliant parellel mechanism㧚Journal of north China university of
technology㧚2007㧘19(1):20-27㧚(in chinese)
[7] CHEN S J㧘YANG Y H㧘SUN X Z㧚Performance analysis and
optimal design of micro-displacement working table㧚 Journal of
machine design㧚 2004㧘21(7):46-49㧚(in chinese)
[8] YU J J,ZHOU Q,BI S S.Optimal design of a fully compliant mechanism
based on its dynamic charactristics㧚Chinese journal of mechanical
engineering㧚2003㧘39(8)㧦32-35㧚(in chinese)
[9] Nicolae Lobontiu.Analytical model of displacement amplification and
stiffness optimization for a class of flexure-based compliant
mechanisms.Computers and Structures 2003:2797-281.
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