US4968923A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Servo control system
Assignee: Via Mechanics Ltd
•
Filing: 1989-12-28
•
Granted: 1990-11-06
•
Expires: 2009-12-28
Abstract
Abstract A servo control system has a motor for a control and a device for commanding target distance and velocity of movement of the control so as to actuate the motor in accordance with commands from the commanding device. The system further includes a distribution device for determining a set of distances of movement for a set of like number of unit times respectively on the basis of the target distance and velocity of movement; a device for adding predetermined numbers of unit times, in each of which the distance of movement is set at zero, before and after the set of the like number of the unit times, respectively; a device for setting a set of weights for the positions of movement for the like number of unit times, respectively; and an averaging device for successively adding the weights to the positions of movement for the like number of unit times, respectively, and averaging the resulting weighted position of movement of a first unit time and those of a desired number of preceding successive unit times to calculate a target position for the first unit time, and then repeating a similar averaging operation successively with respect to each of the remaining unit times in the order of sequence of the remaining unit times until a target position for a last time unit is calculated.
Inventors
- 👤 Akira Busujima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:41
CPC Classifications
G; G05; G05B; G05B19/00; G05B19/02; G05B19/18; G05B19/414; G05B19/4142; G05B19/416
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
199 words
A servo control system having a means for driving a control and a means for commanding target distance and velocity of movement of the control so as to actuate the drive means in accordance with commands from the command means, comprising: a target position computing means for determining a set of individual target distances of movement for a set of a like number of unit times respectively on the basis of the target distance and velocity of movement; and an averaging means for arranging, before the set of the like number of the unit times, a predetermined number of unit times in each of which the distance of movement is set at zero and averaging target position of movement of a first unit time and those of a desired number of preceding successive unit times to calculate a target position for the first unit time, and then repeating a similar averaging operation successively with respect to each of the remaining unit times in the order of sequence of the remaining unit times until a target position for a last time unit is calculated, whereby actuation of the drive means is controlled based on values obtained by the averaging means.
Claim 2
Dependent Claim
199 words
A servo control system having a means for driving a control and a means for commanding target distance and velocity of movement of the control so as to actuate the drive means in accordance with commands from the command means, comprising: a target position computing means for determining a set of individual target distances of movement for a set of a like number of unit times respectively on the basis of the target distance and velocity of movement; and an averaging means for arranging, before the set of the like number of the unit times, a predetermined number of unit times in each of which the distance of movement is set at zero and averaging target position of movement of a first unit time and those of a desired number of preceding successive unit times to calculate a target position for the first unit time, and then repeating a similar averaging operation successively with respect to each of the remaining unit times in the order of sequence of the remaining unit times until a target position for a last time unit is calculated, whereby actuation of the drive means is controlled based on values obtained by the averaging means.
Claim 3
Dependent Claim
239 words
A servo control system having a means for driving a control and a means for commanding target distance and velocity of movement of the control so as to actuate the drive means in accordance with commands from the command means, comprising: a distribution means for determining a set of distances of movement for a set of like number of unit times respectively on the basis of the target distance and velocity of movement; a means for adding predetermined numbers of unit times, in each of which the distance of movement is set at zero, before and after the set of the like number of the unit times, respectively; a means for setting a set of weights for the positions of movement for the like number of unit times, respectively; and an averaging means for successively adding the weights to the positions of movement for the like number of unit times, respectively, and averaging the resulting weighted position of movement of a first unit time and those of a desired number of preceding successive unit times to calculate a target position for the first unit time, and then repeating a similar averaging operation successively with respect to each of the remaining unit times in the order of sequence of the remaining unit times until a target position for a last time unit is calculated, whereby actuation of the drive means is controlled based on values obtained by the averaging means.
Claim 4
Dependent Claim
239 words
A servo control system having a means for driving a control and a means for commanding target distance and velocity of movement of the control so as to actuate the drive means in accordance with commands from the command means, comprising: a distribution means for determining a set of distances of movement for a set of like number of unit times respectively on the basis of the target distance and velocity of movement; a means for adding predetermined numbers of unit times, in each of which the distance of movement is set at zero, before and after the set of the like number of the unit times, respectively; a means for setting a set of weights for the positions of movement for the like number of unit times, respectively; and an averaging means for successively adding the weights to the positions of movement for the like number of unit times, respectively, and averaging the resulting weighted position of movement of a first unit time and those of a desired number of preceding successive unit times to calculate a target position for the first unit time, and then repeating a similar averaging operation successively with respect to each of the remaining unit times in the order of sequence of the remaining unit times until a target position for a last time unit is calculated, whereby actuation of the drive means is controlled based on values obtained by the averaging means.
References Cited (Backward Citations)
US4353020A
Cited
US4331910A
Cited
US4345194A
Cited
US4341986A
Cited
US4535277A
Cited
US4707780A
Cited
US4859920A
Cited
US4882528A
Cited
US4814680A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-11-05 | 1994-05-07 | 1994-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-11-05 | 1998-05-07 | 1998-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-11-05 | 2002-05-07 | 2002-11-06 | $7700.00 | Window Closed / Lapsed |