CONTROL CIRCUIT AND METHOD FOR CONTROLLING ROTARY

专利名称：CONTROL CIRCUIT AND METHOD FOR

CONTROLLING ROTARY SPEED, DATAPROCESSING DEVICE, AND PROGRAM CODE

发明人：BUSCH, PETER申请号：EP11775757.5申请日：20111020公开号：EP2633379A1公开日：20130904

摘要：A regulating circuit that regulates rotary speed of a pulse-width modulated fanincludes a measuring device that determines a period duration (TIst) of a tacho signal(TACH) of the fan, a digital regulating register that acquires a regulation value to drivethe fan on the basis of a determined period duration (TIst) and a desired value (Tsoll), adigital control register that adjusts a duty ratio to drive the fan, the digital controlregister has a smaller register width than the digital regulating register, and a controllerthat updates the digital control register by evaluating a predetermined number of moresignificant bits of the digital regulating register.

申请人：FUJITSU TECHNOLOGY SOLUTIONS INTELLECTUAL PROPERTY GMBH

地址：Mies-van-der-Rohe-Strasse 8 80807 München DE

国籍：DE

代理机构：Epping - Hermann - Fischer

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