Title:
Compact electric grinding machine
Document Type and Number:
Japanese Patent JP5914531
Kind Code:
B2
Abstract:
A control method for an electric sanding machine, which method comprises rectification of the mains voltage and switched motor control. An external inductance L1 and an extra switch according to step-up topology have been incorporated to carry out power correction also during the time when the voltage is lower than the nominal voltage of the motor. This is preferable because the current and the voltage are lower than in a case where the power correction should be carried out during the whole cycle. Above all, the value at the external inductance L1 may be lower because the voltage is lower when the switching is carried out.
Inventors:
Nordstrom, Kai
Application Number:
JP2014000395A
Publication Date:
May 11, 2016
Filing Date:
January 06, 2014
Export Citation:
Assignee:
OYK WB Milka Arbe
International Classes:
B24B23/02
Domestic Patent References:
| JP2003053654A | ||||
| JP6189516A | ||||
| JP63116256U | ||||
| JP63002663A | ||||
| JP4017556A | ||||
| JP2262953A | ||||
| JP2001136778A | ||||
| JP7177788A | ||||
| JP2006223014A | ||||
| JP2010522088A |
Foreign References:
| US20050245182 |
Attorney, Agent or Firm:
Asamura patent office