| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a motor controller with the running performance improved. <P>SOLUTION: This motor controller is equipped with a DC/AC converting means which converts DC voltage into AC voltage, based on a PWM signal, by a switching element, and supplies it to a three-phase brushless DC motor; an induced voltage detecting means which detects the induced voltage of the brushless DC motor; a magnetic pole position detecting means which detects the magnetic pole position of the brushless DC motor from the induced voltage; a voltage control means which outputs a voltage waveform, based on the magnetic pole position outputted from the magnetic pole position detecting means; a PWM control means which converts the waveform of voltage into a PWM signal; a regenerative voltage detecting means which detects the regenerative voltage contained in the induced voltage; and a VDC re-intake setting means which outputs a DC voltage reintake command to the regenerative voltage detecting means, when regeneration detecting action continues for a specified time and where re-intake command time interval is set, based on the physical quantity related to DC voltage, and the regenerative voltage detecting means re-fetches the DC voltage, based on the command. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
