本帖最后由 shouce 于 2015-12-9 23:18 编辑
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% p {! S4 R+ e! M- J# B9 j6 k" T阴圆弧推阳包络线 >> syms r t a b k q i A$ f$ ~8 v, ], f2 o: G) M
>> x2=r*cos(t)+a;y2=r*sin(t)+b;6 Y1 y7 Q* w9 R# D. j
>> x1=-x2*cos(k*q)-y2*sin(k*q)+A*cos(q);
/ p0 a3 m- q$ Z1 q b3 ~5 s>> y1=-x2*sin(k*q)+y2*cos(k*q)+A*sin(q);6 o l6 D/ G: }; z4 t! M# P( A
>> simplify(diff(x1,t))
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, [+ U# @. M/ C6 q6 }6 |9 j* Pans =( u( P" F! C: J
, r2 {/ K& h4 x4 L
r*sin(t - k*q)
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>> simplify(diff(y1,t))
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ans =' \* H9 M: |0 r, x7 C) z: s. U
" {. f2 n9 q% l. Y# X. X8 Er*cos(t - k*q)
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2 J$ E% n: R" v- l# m, R>> simplify(diff(x1,q))$ q$ o0 ?3 _" u
9 G( k) ~2 B& P2 Xans =9 P+ c) L; j& a8 H
% N6 ?! J- H/ o- Wk*sin(k*q)*(a + r*cos(t)) - A*sin(q) - k*cos(k*q)*(b + r*sin(t)), B4 l' \6 H- z. x+ Y
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>> simplify(diff(y1,q))
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4 x3 y& ^) l( Y8 Pans =% z0 g. h: e3 q7 ~
/ c4 N* `# @" C! {A*cos(q) - k*cos(k*q)*(a + r*cos(t)) - k*sin(k*q)*(b + r*sin(t))
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>> f=sym('(r*sin(t - k*q))*(A*cos(q) - k*cos(k*q)*(a + r*cos(t)) - k*sin(k*q)*(b + r*sin(t)))-r*cos(t - k*q)*(k*sin(k*q)*(a + r*cos(t)) - A*sin(q) - k*cos(k*q)*(b + r*sin(t)))') 1 j. H" T6 f1 M
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>> simplify(f)
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ans =
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A*r*sin(q + t - k*q) + b*k*r*cos(t) - a*k*r*sin(t) ; G2 k' H2 o( ]+ P7 ]5 ^4 @
+ f$ D# B/ S- |% h
f1=sym('A*r*sin(q + t - k*q) + b*k*r*cos(t) - a*k*r*sin(t)=0')
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>> pretty(solve(f1,q)): d* |, Y) Z( c7 b# t
/ / b k cos(t) - a k sin(t) \ \" X4 s% U6 c3 L5 P2 G! ?
| t + asin| ----------------------- | |
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1 F' @( L* ^; c| ----------------------------------- |
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5 D" k/ O. J, _% N3 }( J
(t + asin((k*(b*cos(t) - a*sin(t)))/A))/i n$ J/ t/ N" [! W* B; ]' l5 Q
5 n" X/ I4 O# B; d" M阳圆弧推导 阴转子包络线 t + asin((k*(b*cos(t) - a*sin(t))/(A*i))$ B' k8 ?6 ~" p# Y1 i' w
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