Electricity: motive power systems – Positional servo systems – With compensating features
Patent
1984-06-19
1986-03-25
Shoop, Jr., William M.
Electricity: motive power systems
Positional servo systems
With compensating features
299 39, 318648, E21C 4700
Patent
active
045786275
ABSTRACT:
With cutting machines, having their loading means (7) adapted to be lowered below the running surfaces (11) of the crawlers (2) of the drift advancing machine, there results an erroneous position of the machine on account of lifting the front end of the machine during such lowering movement of the loading means (7). For establishing the correct position of the cutting tool (6) and of the cutting arm (5), corrective signal are used which are released by angular position transmitters (16 or 17, respectively). By means of these angular position transmitters (16 or 17, respectively), the swivelling angle of the loading means (7) relative to the frame (1) or the swivelling angle .theta. of the operating cylinder (9) of the loading means (7) relative to the frame (1), respectively, is measured and the required corrective signal for the angle advance .DELTA..alpha. is calculated (FIG. 3).
REFERENCES:
patent: 3325927 (1967-06-01), Mullin
patent: 3405257 (1968-10-01), Rantsch
patent: 3415574 (1968-12-01), Lauber
patent: 3906323 (1975-09-01), Ono
patent: 4070064 (1978-01-01), Cobb
patent: 4499546 (1985-02-01), Kuga
Droscher Bernhard
Zitz Alfred
Keane Patrick C.
Shoop Jr. William M.
Voest-Alpine Aktiengesellschaft
LandOfFree
Device for correcting the control or the display of the position does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Device for correcting the control or the display of the position, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Device for correcting the control or the display of the position will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-633348