公开(公告)号：JPH0847250A

公开(公告)日：1996-02-16

申请号：JP16234195

申请日：1995-06-28

Applicant: CONS RIC MICROELETTRONICA

Inventor： MATEO RO PURESUTEI ,  GIUSETSUPE DANJIERO ,  ANTONIO KUKUTSUCHIO

IPC: G05F1/10 ,  G05B13/02 ,  G06N5/04 ,  H02M3/155 ,  H02M3/156

Abstract: PURPOSE: To provide a fuzzy control process which is not affected by external noise by making a result obtained by a weighting function calculation and the application of a fuzzy rule to be non-fuzzy and obtaining the true value of a suitable duty cycle. CONSTITUTION: In a control system, this fuzzy controller 101 is connected to a switching power source 102, and an input voltage Vi , a current IL on an inductor and an error E generated by an adder node 103 are received at input. An error is obtained by subtracting an output voltage Vo from a reference voltage Vref , and the input voltage Vi and the current IL on the inductor are measured by an appropriate measurement means. Also, the temperature T of a power transistor SW is also sent to the fuzzy controller 101 and measured by a temperature measurement means. As a result, direct control is performed on the switch on and off and temperature itself of the power transistor SW, the parameters are optimized, and superior performance unaffected by external noises is obtained.