{"id":3272,"date":"2021-08-16T01:52:56","date_gmt":"2021-08-16T01:52:56","guid":{"rendered":""},"modified":"2021-08-16T09:51:19","modified_gmt":"2021-08-16T01:51:19","slug":"%e5%8f%af%e6%8e%a7%e7%a1%85%e6%95%b4%e6%b5%81%e7%94%b5%e8%b7%af%e8%af%a6%e8%a7%a3","status":"publish","type":"post","link":"http:\/\/www.szryc.com\/?p=3272","title":{"rendered":"\u53ef\u63a7\u7845\u6574\u6d41\u7535\u8def\u8be6\u89e3"},"content":{"rendered":"
\n\t1\u3001\u5de5\u4f5c\u539f\u7406<\/div>\n
\n\t\u7535\u8def\u548c\u6ce2\u5f62\u5982\u56fe 1 \u6240\u793a\uff0c\u8bbe u2= U2sinω\u3002<\/div>\n
\n\t\u6b63\u534a\u5468\uff1a<\/div>\n
\n\t0\uff1ct\uff1ct1,ug=0,T \u6b63\u5411\u963b\u65ad\uff0cid=0,uT=u2,ud=0<\/div>\n
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\n\t\u8d1f\u534a\u5468\uff1a<\/div>\n
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\n\t\u4ece 0 \u5230 t1 \u7684\u7535\u5ea6\u89d2\u4e3aα\uff0c\u53eb\u63a7\u5236\u89d2\u3002\u4ece t1 \u5230π\u7684\u7535\u5ea6\u89d2\u4e3aθ\uff0c\u53eb\u5bfc\u901a\u89d2\uff0c\u663e\u7136 α+θ=π\u3002\u5f53α=0\uff0cθ=180 \u5ea6\u65f6\uff0c\u53ef\u63a7\u7845\u5168\u5bfc\u901a\uff0c\u4e0e\u4e0d\u63a7\u6574\u6d41\u4e00\u6837\uff0c\u5f53α=180 \u5ea6\uff0cθ=0 \u5ea6\u65f6\uff0c\u53ef<\/div>\n
\n\t\u63a7\u7845\u5168\u5173\u65ad\uff0c\u8f93\u51fa\u7535\u538b\u4e3a\u96f6\u3002
\n\t\"\"<\/p>\n
\n\t\t2\u3001\u5404\u7535\u91cf\u5173\u7cfb<\/div>\n
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\n\t\tud=(1\/2π) u2sinωtd(ωt)=(0.45u2)[1+cosα)\/2]-------------\u5f0f 1<\/div>\n
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\n\t\t\u6d41\u7535\u538bUd \u7684\u6570\u503c\uff0c\u8fd9\u5c31\u662f\u53ef\u63a7\u6574\u6d41\u610f\u4e49\u4e4b\u6240\u5728\u3002<\/div>\n
\n\t\t\u6d41\u8fc7 Rd\u7684\u76f4\u6d41\u7535\u6d41 Id\uff1a<\/div>\n
\n\t\tId=(Ud\/Rd)=0.45(u2\/Rd)×[(1+cosα)\/2]--------------------------\u5f0f 2<\/div>\n
\n\t\tUd\u7684\u6709\u6548\u503c\uff08\u5747\u65b9\u6839\u503c\uff09\uff1a
\n\t\t\"\"
\n\t\t\u6d41\u8fc7 Rd\u7684\u7535\u6d41\u6709\u6548\u503c<\/p>\n
\n\t\t\tI=U\/Rd=(U2\/Rd) ---------------------------------\u5f0f 4<\/div>\n
\n\t\t\t\u7531\u4e8e\u7535\u6e90\u63d0\u4f9b\u7684\u6709\u529f\u529f\u7387 P=UI\uff0c\u7535\u6e90\u89c6\u5728\u529f\u7387 S=U2I\uff08U2 \u662f\u7535\u6e90\u7535\u538b\u6709\u6548\u503c\uff09\uff0c\u6240\u4ee5\u529f\u7387\u56e0<\/div>\n
\n\t\t\t\u6570\uff1a<\/div>\n
\n\t\t\tcosψ=P\/S= -------------------------------------\u5f0f 5<\/div>\n
\n\t\t\t\u7531\u4e0a\u5f0f\u53ef\u89c1\uff0c\u529f\u7387\u56e0\u6570 cosψ\u4e5f\u662fα\u7684\u51fd\u6570\uff0c\u5f53α=0\u65f6\uff0ccosψ=0.707\u3002\u663e\u7136\uff0c\u5bf9\u4e8e\u7535\u963b\u6027\u8d1f<\/div>\n
\n\t\t\t\u8f7d\uff0c\u5355\u76f8\u534a\u6ce2\u53ef\u63a7\u6574\u6d41\u7684\u529f\u7387\u56e0\u6570\u4e5f\u4e0d\u4f1a\u662f 1\u3002<\/div>\n
\n\t\t\t\u6bd4\u503c Ud\/U\u3001I\/Id \u548c cosψ\u968fα\u7684\u53d8\u5316\u6570\u503c\uff0c\u89c1\u8868\u4e00\uff0c\u5b83\u4eec\u76f8\u5e94\u7684\u5173\u7cfb\u66f2\u7ebf\uff0c\u5982\u56fe 2\u6240\u793a<\/div>\n
\n\t\t\t\u8868\u4e00 Ud\/U\u3001I\/Id\u548c cosψ\u7684\u5173\u7cfb\uff0c\u8be6\u7ec6\u8bf7\u770b\u672c\u9875PDF\u6587\u4ef6<\/div>\n<\/p><\/div>\n<\/div>\n

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