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\u4f46\u7531\u4e8e\u56fd\u5185\u8d28\u91cf\u90e8\u95e8\u5730\u4f4d\u4f4e\u4e0b\uff0c\u4ee5\u53caCAD\u5728\u8bbe\u8ba1\u73af\u8282\u4e0a\u7684\u7f3a\u5931\uff0c\u7ecf\u5e38\u62ff\u4e0d\u5230CAD Model\u6216\u8005\u8f6e\u5ed3\u7684\u6570\u636e\uff0c\u53ea\u80fd\u62ff\u5230\u5347\u7a0b\u503c\u3002
\n\u5f53\u7136\u53e6\u5916\u4e00\u4e2a\u539f\u56e0\u5c31\u662f\u4e13\u95e8\u7684\u51f8\u8f6e\u68c0\u6d4b\u4eea\u662f\u6a21\u62df\u6d4b\u91cf\uff0c\u53ef\u4ee5\u76f4\u63a5\u5f97\u5230\u5bf9\u5e94\u7684\u5347\u7a0b\u503c\u3002<\/p>\n
\u4f46\u662f\u5bf9\u4e8e\u5750\u6807\u68c0\u6d4b\uff0c\u5c31\u9700\u8981\u5c06\u5347\u7a0b\u503c\u8f6c\u5316\u4e3a\u8f6e\u5ed3\u5750\u6807\uff0c\u901a\u8fc7\u5750\u6807\u68c0\u6d4b\u51fa\u8f6e\u5ed3\u7ebf\uff0c\u518d\u8f6c\u5316\u56de\u5347\u7a0b\u503c\u3002<\/p>\n
\u5df2\u77e5\u57fa\u5706\u534a\u5f84\\(r_0\\)\uff0c\u6eda\u5b50\u534a\u5f84\\(r_r\\)\uff0c\u5bf9\u5e94\u89d2\u5ea6\\(n\\)\u7684\u5347\u7a0b\u503c\u4e3a\\(s_n\\)\uff0c\u4ece\u52a8\u4ef6\u4e0e\u51f8\u8f6e\u504f\u5fc3\u91cf\u4e3a\\(e\\)\uff0c\u5219\u6eda\u5b50\u5706\u5fc3\u8f68\u8ff9\u5750\u6807\\(P_n\\left(x_n,y_n\\right)\\)\u4e3a\\[x_n=(r_0+r_r+s_n)\\sin(n)+e\\cos(n)\\]\\[y_n=(r_0+r_r+s_n)\\cos(n)+e\\sin(n)\\]<\/p>\n
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\\[\\begin{bmatrix}i_n\\\\j_n\\end{bmatrix}=\\vec{\\begin{bmatrix}\\Delta x\\\\\\Delta y\\end{bmatrix}}=\\vec{\\begin{bmatrix}x_{n+1}-x_n\\\\y_{n+1}-y_n\\end{bmatrix}}\\]<\/p>\n
\u538b\u529b\u89d2\\(\\theta_n=\\arctan (\\Delta y\/\\Delta x)\\)<\/p>\n
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