Title:
SIGNAL PROCESSING APPARATUS AND ELECTRIC TOOL
Document Type and Number:
WIPO Patent Application WO/2019/198392
Kind Code:
A1
Abstract:
Provided is a signal processing apparatus for an electric tool, the signal processing apparatus generating a signal (Stc) for controlling a motor (1) by applying smoothing processing to a torque value signal (St) from a torque sensor (6) of the electric tool by using a filter (22), wherein the signal processing apparatus is provided with a half-width detecting circuit (21) that detects a half width (Bs) of the torque value signal (St), and a computing circuit (23) that performs variable control of a cut-off frequency (fc) of the filter (22) in accordance with the number of hits (H) on the electric tool on the basis of the detected half width of the torque value signal (St).
Inventors:
TANJI YUSUKE
Application Number:
PCT/JP2019/009035
Publication Date:
October 17, 2019
Filing Date:
March 07, 2019
Export Citation:
Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
B25B21/02; B25B21/00; B25B23/14
Foreign References:
| JPH11267981A | 1999-10-05 | |||
| JP2005174396A | 2005-06-30 | |||
| JPS5857676A | 1983-04-05 | |||
| US20070119267A1 | 2007-05-31 | |||
| JP2008083002A | 2008-04-10 |
Other References:
See also references of EP 3778123A4
Attorney, Agent or Firm:
YAMAO, Norihito et al. (JP)
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