US4439825A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Position regulation system containing a digital incremental measuring apparatus
Assignee: Maag Gear Wheel and Machine Co Ltd
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Filing: 1981-07-27
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Granted: 1984-03-27
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Expires: 2001-07-27
Abstract
Abstract A position regulation system containing a digital incremental measuring apparatus. The use of a discriminator and a computer allows the detection of long distances with high resolution, without counters or with only very short counters. The system is capable of automatically advancing to certain positions at a preselected speed or with preselected acceleration and of accordingly determining priorities for the positioning or adjustment magnitudes used for the advance.
Inventors
- 👤 Meinrad Donner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 05:49
CPC Classifications
G; G05; G05B; G05B19/00; G05B19/02; G05B19/18; G05B19/19; G05B19/21; G05B19/23; G05B19/231; G05B19/237; G05B19/232; G05B19/414; G05B19/4142; G05D; G05D3/00; G05D3/12; G05D3/20; G05B2219/00; G05B2219/30; G05B2219/34; G05B2219/34052; G05B2219/34215; G05B2219/34367; G05B2219/37; G05B2219/37155; G05B2219/37296; G05B2219/37313; G05B2219/37388
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
309 words
A position regulation system for two relatively movable objects, one of which is provided with a drive, comprising: a digital incremental measuring apparatus for evaluation of measuring signals of 90°-phase shift; said digital incremental measuring apparatus containing a direction discriminator having an output; said discriminator delivering a number of measuring pulses for each relative direction of movement of said two objects; each of said measuring pulses corresponding to one edge of the measuring signals; an interrupt logic for delivering output pulses; the output of said discriminator being connected to said interrupt logic; a computer having a program and memory register means; said interrupt logic being connected to said computer; the course of the program of said computer being interrupted by each output pulse of said interrupt logic; said output pulses from said interrupt logic serving for updating an actual value in said memory register means; said output pulses forming a set value/actual value difference following the interruption of the program of the computer; said output pulses forming from said set value/actual value difference a positioning magnitude; a positioning element; said positioning magnitude being transmitted to said positioning element; said positioning element controlling the drive of the one object; the computer has an output side; said computer contains a digital to analogue converter defining said output side of said computer; said digital to analogue converter delivering said positioning magnitude which defines a positioning magnitude for the position of said one object; said interrupt logic being provided with a time clock input; said time clock input interrupting the course of the program in said computer; the measuring pulses arriving at said interrupt logic between said interruptions being a measurement for the displacement speed of the driven object; and a signal representative of the displacement speed of said object being transmitted to the digital to analogue converter as a second positioning magnitude.
Claim 2
Dependent Claim
309 words
A position regulation system for two relatively movable objects, one of which is provided with a drive, comprising: a digital incremental measuring apparatus for evaluation of measuring signals of 90°-phase shift; said digital incremental measuring apparatus containing a direction discriminator having an output; said discriminator delivering a number of measuring pulses for each relative direction of movement of said two objects; each of said measuring pulses corresponding to one edge of the measuring signals; an interrupt logic for delivering output pulses; the output of said discriminator being connected to said interrupt logic; a computer having a program and memory register means; said interrupt logic being connected to said computer; the course of the program of said computer being interrupted by each output pulse of said interrupt logic; said output pulses from said interrupt logic serving for updating an actual value in said memory register means; said output pulses forming a set value/actual value difference following the interruption of the program of the computer; said output pulses forming from said set value/actual value difference a positioning magnitude; a positioning element; said positioning magnitude being transmitted to said positioning element; said positioning element controlling the drive of the one object; the computer has an output side; said computer contains a digital to analogue converter defining said output side of said computer; said digital to analogue converter delivering said positioning magnitude which defines a positioning magnitude for the position of said one object; said interrupt logic being provided with a time clock input; said time clock input interrupting the course of the program in said computer; the measuring pulses arriving at said interrupt logic between said interruptions being a measurement for the displacement speed of the driven object; and a signal representative of the displacement speed of said object being transmitted to the digital to analogue converter as a second positioning magnitude.
Claim 3
Dependent Claim
33 words
The system as defined in claim 1, further comprising: means for differentiating the displacement speed of the driven object; and said means delivering as a third positioning magnitude the acceleration of the object.
Claim 4
Independent Claim
41 words
The system as defined in claims 1 or 2, further including: an intermediate memory arranged between said discriminator and said interrupt logic; said intermediate memory storing measuring pulses arriving during time clock interruptions; and said interrupt logic processing said measuring pulses.
Claim 5
Dependent Claim
21 words
The system as defined in claim 2, further comprising: an external computer means for determining priorities between the three positioning magnitudes.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-03-27 | 1987-09-26 | 1988-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-03-27 | 1991-09-26 | 1992-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-03-27 | 1995-09-26 | 1996-03-27 | $7700.00 | Window Closed / Lapsed |