| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a PWM driving system capable of preventing generation of overshoot current at initial current carrying time for inductive load and realizing it at low cost. <P>SOLUTION: In a control system for inductive load L for driving and controlling the inductive load L to be driven by PWM by a switching transistor Tr connected with a power supply side of the inductive load L in series based on a basic duty ratio η<SB>0</SB>corresponding to a target current value I<SB>1</SB>so as to maintain an average value of driving current at the target current value I<SB>1</SB>decided in advance, a rise control time t<SB>0</SB>for setting a duty ratio η of PWM control to be smaller than the basic duty ratio η<SB>0</SB>is provided. <P>COPYRIGHT: (C)2007,JPO&INPIT |
