US3818261A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stepping motor speed control apparatus
Assignee: Bull HN Information Systems Italia SpA
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Filing: 1971-12-23
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Granted: 1974-06-18
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Expires: 1991-12-23
Abstract
Abstract Acceleration of a stepping motor is provided by means of a stream of pulses whose frequency is increased with time and by means for generating a control signal in response to a predetermined number of pulses, each of the control signals directing that the motor be stepped in accordance with a predetermined pattern. Deceleration control is provided by providing the stream of pulses with a frequency which is decreased with time.
Inventors
- 👤 C Clarke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:41
CPC Classifications
G; G05; G05B; G05B19/00; G05B19/02; G05B19/18; G05B19/19; G05B19/40; G05B2219/00; G05B2219/30; G05B2219/43; G05B2219/43006
Claims Analysis
Total Claims: 37
Claim 1
Independent Claim
110 words
Apparatus for controlling movement of a stepping motor, said apparatus comprising: A. means for producing a stream of signals having a frequency which changes as a function of time, said means for producing comprising 1. means for providing a speed control signal, 2. means coupled to said means for providing for integrating said speed control signal to produce an integrated speed control signal, and 3. oscillator means responsive to said integrated speed control signal for producing said stream of signals; B. means for generating a control signal after a predetermined number of said signals; and C. means responsive to said control signal for providing a signal for stepping said motor.
Claim 2
Dependent Claim
110 words
Apparatus for controlling movement of a stepping motor, said apparatus comprising: A. means for producing a stream of signals having a frequency which changes as a function of time, said means for producing comprising 1. means for providing a speed control signal, 2. means coupled to said means for providing for integrating said speed control signal to produce an integrated speed control signal, and 3. oscillator means responsive to said integrated speed control signal for producing said stream of signals; B. means for generating a control signal after a predetermined number of said signals; and C. means responsive to said control signal for providing a signal for stepping said motor.
Claim 3
Dependent Claim
21 words
means coupled to said means for providing for integrating said speed control signal to produce an integrated speed control signal, and
Claim 4
Dependent Claim
21 words
means coupled to said means for providing for integrating said speed control signal to produce an integrated speed control signal, and
Claim 5
Dependent Claim
24 words
means for storing a number in said counter means, said number corresponding to a function of the desired steady-state speed of said motor, and
Claim 6
Dependent Claim
24 words
means for storing a number in said counter means, said number corresponding to a function of the desired steady-state speed of said motor, and
Claim 7
Dependent Claim
33 words
Apparatus as defined in claim 1 wherein said frequency is increased with time in order to accelerate said motor and wherein said frequency is decreased with time in order to decelerate said motor.
Claim 8
Dependent Claim
24 words
means for presetting a number into said counter means, said number corresponding to a function of the desired steady-state speed of said motor, and
Claim 9
Dependent Claim
24 words
means for presetting a number into said counter means, said number corresponding to a function of the desired steady-state speed of said motor, and
Claim 10
Dependent Claim
14 words
means for stepping said motor in accorandance with the indication of said storage means.
Claim 11
Dependent Claim
14 words
means for stepping said motor in accorandance with the indication of said storage means.
Claim 12
Dependent Claim
45 words
means coupling said stream of signals to decrement the preset number in said counter means, so that said control signal is generated when said preset number is completely decremented; and C. means responsive to said control signal for providing a signal for stepping said motor.
Claim 13
Dependent Claim
45 words
means coupling said stream of signals to decrement the preset number in said counter means, so that said control signal is generated when said preset number is completely decremented; and C. means responsive to said control signal for providing a signal for stepping said motor.
Claim 14
Dependent Claim
42 words
Apparatus as defined in claim 1 further comprising speed control adjust means coupled in the coupling between said means for providing said speed control signal and said means for integrating so that the frequency of said stream of signals may be changed.
Claim 15
Dependent Claim
55 words
means coupling said stream of signals to change the value of the number stored in said counter means by a predetermined amount until said value reaches a predetermined number, said control signal generated when said predetermined number is reached; and C. means responsive to said control signal for providing a signal for stepping said motor.
Claim 16
Dependent Claim
55 words
means coupling said stream of signals to change the value of the number stored in said counter means by a predetermined amount until said value reaches a predetermined number, said control signal generated when said predetermined number is reached; and C. means responsive to said control signal for providing a signal for stepping said motor.
Claim 17
Dependent Claim
45 words
oscillator means responsive to said integrated speed control signal for producing said stream of signals; B. means for generating a control signal after a predetermined number of said signals; and C. means responsive to said control signal for providing a signal for stepping said motor.
Claim 18
Dependent Claim
45 words
oscillator means responsive to said integrated speed control signal for producing said stream of signals; B. means for generating a control signal after a predetermined number of said signals; and C. means responsive to said control signal for providing a signal for stepping said motor.
Claim 19
Dependent Claim
28 words
Apparatus as defined in claim 3 further comprising circuit means coupled with said speed control adjust means for disabling change of said frequency when said motor is decelerating.
Claim 20
Dependent Claim
48 words
Apparatus as defined in claim 1 further comprising: A. means for increasing said frequency to accelerate said motor; B. wherein said frequency is held substantially constant in order to rotate said motor at a substantially constant speed; and C. means for decreasing said frequency to decelerate said motor.
Claim 21
Dependent Claim
30 words
Apparatus as defined in claim 5 further comprising means for detecting that said motor should be decelerated and wherein said means for decreasing is responsive to said means for detecting.
Claim 22
Dependent Claim
48 words
Apparatus for controlling movement of a stepping motor, said apparatus comprising: A. means for producing a stream of signals having a frequency which changes as a function of time; B. means for generating a control signal after a predetermined number of said signals, said means for generating comprising
Claim 23
Dependent Claim
48 words
Apparatus for controlling movement of a stepping motor, said apparatus comprising: A. means for producing a stream of signals having a frequency which changes as a function of time; B. means for generating a control signal after a predetermined number of said signals, said means for generating comprising
Claim 24
Dependent Claim
22 words
Apparatus as defined in claim 7 wherein said motor is rotated at least one step each time said control signal is generated.
Claim 25
Dependent Claim
48 words
Apparatus for controlling movement of a stepping motor, said apparatus comprising: A. means for producing a stream of signals having a frequency which changes as a function of time; B. means for generating a control signal after a predetermined number of said signals, said means for generating comprising
Claim 26
Dependent Claim
48 words
Apparatus for controlling movement of a stepping motor, said apparatus comprising: A. means for producing a stream of signals having a frequency which changes as a function of time; B. means for generating a control signal after a predetermined number of said signals, said means for generating comprising
Claim 27
Dependent Claim
64 words
Apparatus for controlling movement of a stepping motor, said apparatus comprising: A. means for producing a stream of signals having a frequency which changes as a function of time; B. means for generating a control signAl after a predetermined number of said signals; and C. means responsive to said control signal for providing a signal for stepping said motor, said means for providing comprising
Claim 28
Dependent Claim
64 words
Apparatus for controlling movement of a stepping motor, said apparatus comprising: A. means for producing a stream of signals having a frequency which changes as a function of time; B. means for generating a control signAl after a predetermined number of said signals; and C. means responsive to said control signal for providing a signal for stepping said motor, said means for providing comprising
Claim 29
Dependent Claim
37 words
Apparatus as defined in claim 10 wherein said apparatus controls the movement of a plurality of stepping motors and wherein said storage means indicates the stepping pattern of each of said motors as a function of time.
Claim 30
Dependent Claim
31 words
Apparatus as defined in claim 10 wherein said means for directing further comprises means for addressing successive indications of said storage means in response to successive ones of said control signals.
Claim 31
Dependent Claim
87 words
Apparatus for controlling the speed of a stepping motor, said apparatus comprising: A. means for receiving a first signal; B. means for integrating said first signal; C. oscillator means responsive to said means for integrating for generating a stream of pulses having a frequency which is dependent upon the magnitude of said integrated first signal; D. means for generating a control signal after a predetermined number of said pulses; and E. means for moving said motor by a predetermined amount each time said control signal is generated.
Claim 32
Dependent Claim
87 words
Apparatus for controlling the speed of a stepping motor, said apparatus comprising: A. means for receiving a first signal; B. means for integrating said first signal; C. oscillator means responsive to said means for integrating for generating a stream of pulses having a frequency which is dependent upon the magnitude of said integrated first signal; D. means for generating a control signal after a predetermined number of said pulses; and E. means for moving said motor by a predetermined amount each time said control signal is generated.
Claim 33
Dependent Claim
33 words
Apparatus as defined in claim 13 wherein said frequency is increased with time in order to accelerate said motor and wherein said frequency is decreased with time in order to decelerate said motor.
Claim 34
Dependent Claim
52 words
Apparatus as defined in claim 13 wherein said means for generating comprises: A. counter means; B. means for loading a number into said counter means; and wherein C. said control signal is generated each time said predetermined number of said pulses generated is equal to said number loaded into said counter means.
Claim 35
Dependent Claim
45 words
Apparatus as defined in claim 15 wherein said number loaded into said counter means is a function of a predetermined speed of said motor and further comprising means for reloading said number into said counter means in response to the generation of said control signal.
Claim 36
Dependent Claim
82 words
Apparatus for controlling movement of a stepping motor, said apparatus comprising: A. means for receiving a first signal; B. means for integrating said first signal; C. means, responsive to said means for integrating, for providing a stream of second signals having a frequency which changes as a function of time; D. means for generating control signals after each of successive predetermined numbers of said second signals; and E. means responsive to said control signals for providing third signals for stepping said motor.
Claim 37
Dependent Claim
82 words
Apparatus for controlling movement of a stepping motor, said apparatus comprising: A. means for receiving a first signal; B. means for integrating said first signal; C. means, responsive to said means for integrating, for providing a stream of second signals having a frequency which changes as a function of time; D. means for generating control signals after each of successive predetermined numbers of said second signals; and E. means responsive to said control signals for providing third signals for stepping said motor.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-17 | 1977-12-17 | 1978-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-17 | 1981-12-17 | 1982-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-17 | 1985-12-17 | 1986-06-18 | $7700.00 | Window Closed / Lapsed |