1.碟形弹簧
~~P5k: 圓柱坐标
C )
s5D 方程:r = 5
n@i HFBb theta = t*3600
$PPi5f}HD z =(sin(3.5*theta-90))+24*t
\)[j_^
Or+U@vAnk 图1
00y!K
m_D eByz-,{P 2.葉形线.
=nS3p6>rZ 笛卡儿坐標标
gf@:R'$:+ 方程:a=10
`h\j99 x=3*a*t/(1+(t^3))
L*+@>3mu) y=3*a*(t^2)/(1+(t^3))
^CX6&d
CRE3icXbQ 图2
+'a^f5 P@B] 3.螺旋线(Helical curve)
kzLsoZ!I 圆柱坐标(cylindrical)
ND;#7/$> 方程: r=t
LL!Dx%JZ theta=10+t*(20*360)
m
s\} z=t*3
fr3d
WT=;: j 图3
<'*LRd$1 7$=InK 4.蝴蝶曲线
w@E3ZL^ 球坐标
eMsd37J 方程:rho = 8 * t
HV|,}Wks6s theta = 360 * t * 4
RrB&\9= phi = -360 * t * 8
IJ"q~r$
NLqzi%s 图4
TJRCH>E[a 0h_|t-9j 5.渐开线
zF<R'XP 采用笛卡尔坐标系
K%oG,-wdg 方程:r=1
6&x@.1('z ang=360*t
=,M5KDk` s=2*pi*r*t
5j(k:a+!H x0=s*cos(ang)
&QgR*,5eo y0=s*sin(ang)
i/4>2y9/F4 x=x0+s*sin(ang)
&8lZNv8;(p y=y0-s*cos(ang)
l_p2Riv z=0
a~w$#fo"`f
o+'6`g'8 图5
{wKB;?fUvk 7.oM J 6.螺旋线.
k,*XG$2h 笛卡儿坐标
=^?/+p8k 方程:x = 4 * cos ( t *(5*360))
?@86P|19 y = 4 * sin ( t *(5*360))
U xGApK=X z = 10*t
W<g1<z\f
<5051UEu 图6
!Uo4,g6r+ oEv'dQ9 7.对数曲线
|6-nbj 笛卡尔坐标系
&D<y X~ 方程:z=0
QXK{bxwC x = 10*t
GbI/4<)l} y = log(10*t+0.0001)
N!}f}oF
2?Vd 5xkt 图7
$&c*'3 Pm7}"D'/ 8.球面螺旋线
:2`e(+Uz 采用球坐标系
Di{de` 方程:rho=4
UN#S;x* theta=t*180
nw<uyaU-t phi=t*360*20
m&3xJuKih
i%?* @uj 图8
flx(HJK "AqB$^S9t 9.双弧外摆线
~xTt204S 卡迪尔坐标
$??I/6 方程: l=2.5
HoAy_7-5 b=2.5
A#,ZUOPGH x=3*b*cos(t*360)+l*cos(3*t*360)
4xj4=C~i Y=3*b*sin(t*360)+l*sin(3*t*360)
ueNS='+m
PA*5Bk="q 图9
ckn(`I \;Weizq5 10.星行线
MdF2Gk-9 卡迪尔坐标
lB4WKn=?Kl 方程:a=5
7tp36 TE x=a*(cos(t*360))^3
*Pr )% y=a*(sin(t*360))^3
"dlVk~
z$sGv19pB 图10
0g;|y4SN= E{(;@PzE 11.心脏线
kx^/*~ex 圓柱坐标
ar,7S&s