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鎮ㄥソ锛屾杩庝締(l谩i)鍒扮董搴�(k霉)闆诲瓙甯傚牬(ch菐ng)缍�(w菐ng) 鐧婚寗 | 鍏嶈不(f猫i)娉ㄥ唺(c猫)

骞惰伅(li谩n)闆婚樆
闁辫畝锛�5445鏅�(sh铆)闁擄細2017-07-07 15:21:09

    鍏╅粸(di菐n)绲勫苟鍒楅�ｆ帴鍦ㄩ浕璺腑绋辩偤骞惰伅(li谩n)闆婚樆锛屽彟澶栫敱鍠磾鐨勫苟鑱�(li谩n)闆婚樆鎴栫敤闆诲櫒锛堢敤闆诲櫒锛氬锛岄浕瑕栨(j墨)锛岀┖瑾�(di脿o)锛�闆昏叇绛夛級妲�(g貌u)鎴愮殑闆昏矾绋辩偤骞惰伅(li谩n)闆昏矾銆傚皪(du矛)姣斾簬绗簩鍊�(g猫)闆昏矾锛岄浕闃伙紙鐢ㄩ浕鍣級锛屼緷娆￠�ｆ帴璧蜂締(l谩i)鐨勭偤涓茶伅(li谩n)闆昏矾銆�

瀹氱京

    骞惰伅(li谩n)闆昏矾锛氬苟鑱�(li谩n)鐨勫悇鏀矾闆诲鐩哥瓑锛屽共璺浕娴佺瓑浜庡悇鍊�(g猫)鏀矾鍜岃〃閬�(d谩)寮忥細闆婚樆R1R2R3鈥︹�n骞惰伅(li谩n),闆诲U1=U2=鈥︹��=Un骞茶矾闆绘祦锛欼n=I1+I2+鈥︹��+In鐢变簬P=UI,I=U/R锛屼唬鍏�锛屽苟鑱�(li谩n)闆婚樆鐨勫姛鐜囨瘮P1:P2:P3鈥︹�︼細Pn=U1^2/R1:U2^2/R2鈥︹�n^2/Rn=1/R1:R2鈥︹��1/Rn鐢变簬鏄磾闆婚樆锛岀櫦(f膩)鐔辨瘮Q1:Q2鈥︹�︼細Qn=Pn姣�=1/R1:R2鈥︹��1/Rn
闆婚樆瀹氱京

鎳�(y墨ng)鐢�

    骞惰伅(li谩n)闆婚樆鐨勮▓(j矛)绠楀叕寮�
    1.闆绘祦瑷�(j矛)绠�
    I绺�=I1+L2+......+In
    鍗崇附闆绘祦绛変簬閫氶亷(gu貌)鍚勫��(g猫)闆婚樆鐨勯浕娴佷箣鍜�
    2.闆诲瑷�(j矛)绠�
    U绺�=U1=U2=鈥︹��=Un
    骞惰伅(li谩n)闆昏矾鍚勬敮璺叐绔殑闆诲鐩哥瓑锛屼笖绛変簬绺介浕澹�
    3.闆婚樆鍊艰▓(j矛)绠�
    1/R绺�=1/R1+1/R2+鈥︹��+1/Rn
    鍗崇附闆婚樆鐨勫�掓暩(sh霉)绛変簬鍚勫垎闆婚樆鐨勫�掓暩(sh霉)涔嬪拰
    鐗瑰垾鐨�锛屽叐闆婚樆骞惰伅(li谩n)绺藉�肩偤锛�  銆�
    灏�(du矛)浜巒鍊�(g猫)鐩哥瓑鐨勯浕闃诲苟鑱�(li谩n)锛屽叕寮忓氨绨�(ji菐n)鍖栫偤R骞�=R/n
    4.骞惰伅(li谩n)闆婚樆鍊肩殑浼扮畻
    锛�1锛夎嫢骞惰伅(li谩n)鐨勫叐闆婚樆鍊间箣闁撹秴閬�(gu貌)鍥涘��锛屽墖绺介浕闃诲皬浜庝换涓�骞惰伅(li谩n)闆婚樆涔嬪��銆�
    锛�2锛夎嫢骞惰伅(li谩n)鐨勫叐闆婚樆鍊间箣闁撳皬浜庡洓鍊嶏紝鍓囩附闆婚樆灏忎簬  銆傞憭浜庢牴铏�(h脿o)涓嶄究浜庡彛绠�锛岄倓鍙瓑鏄庣暥(d膩ng)鍏╅浕闃诲�间箣闁撳皬浜庝笁鍊�锛屽墖绺介浕闃诲皬浜�  銆�
    娉細绲�(ji茅)璜栵紙1锛夛紙2锛夌劇(w煤)璜栨湁娌�(m茅i)鏈夊洓鍊嶄箣闁撶殑闂�(gu膩n)绯荤祼(ji茅)璜栫附鏄垚绔嬬殑锛屽彧鏄苟鑱�(li谩n)闆婚樆闂�(gu膩n)绯讳笉鍚岋紝浼扮畻鐨勫�肩簿搴︿笉鍚�銆傜祼(ji茅)璜栵紙2锛夊彲浠ュ埄鐢ㄥ熀鏈笉绛夊紡璀夋槑銆傝垑渚嬶細鍏╅浕闃�2鍜�4锛岀敤锛�1锛変及绠楀皬浜�2锛岀敤锛�2锛変及绠楀皬浜�  锛屾垨1.5銆�
    鐢ㄥ湒瑙ｆ硶姹傚苟鑱�(li谩n)闆�
    1.鏂规硶涓�
    鑻ヨ姹俁1鑸嘡2鐨勫苟鑱�(li谩n)闆婚樆鍊�锛屽彲鍏堜綔鐩磋鍧愭(bi膩o)绯粁Oy锛屽苟浣淵=X鐨勭洿绶歭锛屽湪OX杌镐笂鍙朅榛�(di菐n)锛屼娇OA闀�(zh菐ng)搴︾瓑浜嶳1鐨勯樆鍊�锛屽湪OY杌镐笂鍙朆榛�(di菐n)锛屼娇OB闀�(zh菐ng)搴︾瓑浜嶳2鐨勯樆鍊�锛岄�ｇ祼(ji茅)AB鑸囩洿绶歭鐩镐氦浜嶮榛�(di菐n)锛屽墖M榛�(di菐n)鐨勫潗妯�(bi膩o)(X鎴朰)鍊煎嵆鐐篟1鑸嘡2鐨勫苟鑱�(li谩n)闃诲��銆�
    璀夋槑锛� 浣淢D鈯X
    鈭� 鈻矨OB鈭解柍ADM
    鈭� AO/BO=AD/DM
    鍥燨D=DM锛屽苟瑷�(sh猫)鍏堕暦(zh菐ng)搴︾偤R鐨勬暩(sh霉)鍊�
    R1/R2=(R1-R)/R
    瑙ｅ緱锛� R=R1R2/(R1+R2)
    姝ゅ嵆R1銆丷2鐨勫苟鑱�(li谩n)闆婚樆鐨勯樆鍊�銆�
    鎳�(y墨ng)鐢ㄨ嫢闇�姹備笁鍊�(g猫)闆婚樆鐨勫苟鑱�(li谩n)闆婚樆鍊硷紝鍙厛姹俁1銆丷2鐨勫苟鑱�(li谩n)闆婚樆锛屽緱鍒癉榛�(di菐n)锛屽啀鍦∣Y杌镐笂鍙朇榛�(di菐n)锛屼娇OC闀�(zh菐ng)搴︾瓑浜嶳3鐨勫�硷紝閫D鑸噇鐩寸窔浜や簬N榛�(di菐n)锛屽墖N榛�(di菐n)鐨勫潗妯�(bi膩o)鍊肩偤R1銆丷2銆丷3鐨勫苟鑱�(li谩n)绺介樆鐨勯樆鍊笺�備緥濡�锛屼护R1=4惟锛孯2=12惟锛孯3=6惟锛屾眰瑙ｇ祼(ji茅)鏋滅偤鍦�2鎵�绀�锛孯1銆丷2鐨勫苟鑱�(li谩n)绺介樆鐐�3惟锛孯1銆丷2銆丷3鐨勫苟鑱�(li谩n)绺介樆鐐�2惟銆�
    2.鏂规硶浜�
    鍦ㄥ钩闈笂浠诲彇涓�榛�(di菐n)O锛岀敤鐩镐簰浜よ鐐�120掳鐨勪笁鐭㈤噺浣滅偤鍧愭(bi膩o)杌窸X銆丱Y銆丱Z(姣忚桓鍧囧彲鍚戣矤(f霉)鍚戝欢浼�)锛岃嫢瑕佹眰R1銆丷2鐨勫苟鑱�(li谩n)闆婚樆锛屽彧瑕佸湪OX杌镐笂鍙朞A闀�(zh菐ng)绛変簬R1鐨勫��锛屽湪OY杌镐笂鍙朞B闀�(zh菐ng)绛変簬R2鍊硷紝閫ｇ祼(ji茅)AB锛屼氦OZ杌�(璨�(f霉)鍚�)浜嶤榛�(di菐n)锛屽墖OC闀�(zh菐ng)搴�(鍊�)鍗崇偤鎵�姹傚苟鑱�(li谩n)闆婚樆闃诲�硷紟
    璀夋槑 闈㈢⿳S鈻矨OB=S鈻矨OC+S鈻矪OC
    鍗� (1/2)AO脳BO脳Sin120掳
    =(1/2)AO脳OC脳Sin60掳+(1/2)BO脳OC脳Sin60掳AO脳BO =AO脳OC+BO脳OCR1R2=R1R+R2R
    鈭� R=R1R2/(R1+R2)
    鎳�(y墨ng)鐢� 鍙柟渚垮湴閫ｇ簩(x霉)姹傝В澶氬��(g猫)闆婚樆鐨勫苟鑱�(li谩n)鍊�銆備緥濡傦紝鑻ヨ姹俁1銆丷2銆丷3鐨勫苟鑱�(li谩n)绺介樆鐨勯樆鍊硷紝鍙渶鍏堟眰鍑篟1銆丷2骞惰伅(li谩n)鍚庣殑闃诲�糝12(鍗冲緱鍒癈榛�(di菐n))锛屽啀鍦∣A鐨勮矤(f霉)鍚戝彇涓�榛�(di菐n)D锛屽揩OD闀�(zh菐ng)绛変簬R3鐨勫��锛岄�ｇ祼(ji茅)CD浜Y杌镐簬E榛�(di菐n)锛屽墖OE闀�(zh菐ng)鍗崇偤R1銆丷2銆丷3鐨勫苟鑱�(li谩n)绺介樆鐨勯樆鍊�锛屽鍦�3銆傚R1=4惟锛孯2=12惟锛孯3=6惟锛屾寜姝ゆ硶鍙眰鍑篟12=3惟锛汻1銆丷2銆丷3涓夐浕闃诲苟鑱�(li谩n)闆婚樆鍊肩偤2惟锛屽鍦�4銆�
    浠ヤ笂姹傝В鏂规硶灏�(du矛)浜庢眰闆诲鍣ㄤ覆鑱�(li谩n)銆佸綀绨т覆鑱�(li谩n)锛屽嚫閫忛彙鎴愯薄绛夎垏闆婚樆骞惰伅(li谩n)鏈夌浉浼艰▓(j矛)绠楀叕寮忕殑鍟�(w猫n)椤�锛屽悓妯ｉ仼鐢�
    鐢ㄦ暩(sh霉)瀛�(xu茅)鏂规硶绠楅樆鍊�
    鍥�?y脿n)妯佃瘬鈷�?li谩n)闆昏矾涓共璺浕娴佺瓑浜庡悇鍊�(g猫)鏀矾闆绘祦涔嬪拰I绺�=I1+I2+I3+I4+.........+In锛屽共璺浕澹撶瓑浜庡悇鐢ㄩ浕鍣ㄩ浕澹揢绺�=U1=U2=鈥︹��=Un
    I绺�=U/R 1/R=I绺�/U
    I1=U/R1 1/R1=I1/U
    In=U/Rn 1/Rn=In/U
    鎵�浠�1/R1+1/R2+1/R3+........1/Rn=I1+I2I3+I4+.........+In/U=I绺�/U
    鎵�浠�1/R绺�=1/R1+1/R2+1/R3+......+1/Rn

鎬ц唱(zh矛)

    涓茶伅(li谩n)闆昏矾鐨勭壒榛�(di菐n)
    姝愬瀹氬緥锛欼=U/R
    璁婂舰姹傞浕澹擄細U=IR
    璁婂舰姹傞浕闃伙細R=U/I
    闆诲鐨勯棞(gu膩n)绯伙細U=U1+U2
    闆绘祦鐨勯棞(gu膩n)绯伙細I=I1=I2
    闆婚樆鐨勯棞(gu膩n)绯伙細R=R1+R2
    骞惰伅(li谩n)闆昏矾鐨勭壒榛�(di菐n)
    闆诲鐨勯棞(gu膩n)绯伙細U=U1=U2
    闆绘祦鐨勯棞(gu膩n)绯伙細I=I1+I2
    闆婚樆鐨勯棞(gu膩n)绯伙細1/R=1/R1+1/R2
    闆诲姛鐨勮▓(j矛)绠楋細W=UIt
    闆诲姛鐜囩殑瀹氱京寮忥細P=W/t
    甯哥敤鍏紡锛歅=UI
    鐒﹁�冲畾寰嬶細Q鏀�=I2Rt
    灏�(du矛)浜庣磾闆婚樆闆昏矾鑰岃█锛歈鏀�=I2Rt =U2t/R=UIt=Pt=UQ=W
    鐓ф槑闆昏矾鐨勭附鍔熺巼鐨勮▓(j矛)绠楋細P=P1+P1+鈥︹��

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