US3824780A - System for regulating rotary speed of a shaft - Google Patents

System for regulating rotary speed of a shaft Download PDF

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Publication number
US3824780A
US3824780A US00263275A US26327572A US3824780A US 3824780 A US3824780 A US 3824780A US 00263275 A US00263275 A US 00263275A US 26327572 A US26327572 A US 26327572A US 3824780 A US3824780 A US 3824780A
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United States
Prior art keywords
output
input
transducer
amplifier
signal
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Expired - Lifetime
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US00263275A
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English (en)
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J Barba
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Individual
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Individual
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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K29/00—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
    • H02K29/06—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with position sensing devices
    • H02K29/12—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with position sensing devices using detecting coils using the machine windings as detecting coil
    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C3/00—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means
    • G04C3/16—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means incorporating an electro-dynamic continuously rotating motor
    • G04C3/165—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means incorporating an electro-dynamic continuously rotating motor comprising a mechanical regulating device influencing the electromotor

Definitions

  • ABSTRACT A pick-up attached to the shaft whose movement is to be regulated picks up a signal periodically produced by the shaft itself during its rotation.
  • the signal triggers an electronic circuit which emits a stable signal of constant duration which acts on the pulsing system of the shaft.
  • AMPLIFIER MONOSTABLE CIRCUIT POWER SQURCE SYSTEM FOR REGULATING ROTARY SPEED OF A SHAFT The following main parts should be distinguished in a clock or watch mechanism: frame, driving member, train of wheels [clockwork],dial plate, escapement, regulating member, winding mechanism and timesetting mechanism. Each of these parts possesses a different and well known function.
  • the invention relates to a novel regulating member that can be used with a clock or watch mechanism and which possesses considerable advantages of precision, manufacturing cost and stability [strength] in relation to arrangements known until the present time.
  • the inventor being an engineer specialized in electronics and after having performed various tests in the field of his specialty, has produced a regulating member based on a novel concept and applicable (among other possibilities) to a clock or watch mechanism which forces the driving member thereof to regulate its speed of rotation in accordance with the response of an electronic circuit.
  • the regulating member consists basically of peripheral elements and an electronic circuit.
  • the peripheral elements consist of signal pick-ups [picking up and emitting devices], a pulsing or, driving coil and an amplifier (except in the case where a transistor of the electronic circuit is employed for the purpose of amplification), as well as elements for adapting theelectronic circuit to the particular mechanism to be regulated. I r
  • the electronic circuit consists of a circuit capable of emitting aresponse after receiving a signal, which re sponse acts on the shaft pulsing system so as to regulate the speed of theshaft.
  • the circuit is designed in such a manner that the response consists of a stable signal whose constant duration constitutes the time base of the system.
  • the electronic circuit receives the signal of a pick-up arranged in the vicinity of the shaft.
  • the signal is produced by the shaft itself periodically during its rotation.
  • the response of the electronic circuit is employed for blocking an amplifier which controls the driving memberin the following manner:
  • the pick-up connected to the amplifier emits a pulse produced likewise by the shaft itself periodically during its rotation.
  • the pulse is received by the amplifier and, if the amplifier is not blocked by the response signal of the electronic circuit, the pulse is transformed into an amplified pulse in the driving coil which, in turn, transforms it into a thrust exerted on the driving member.
  • a thrust is not exerted on the driving member and, consequently, the driving member will reduce its speed.
  • the driving member should comprise a magnetic circuit subjected to the action of the driving coil and the elements required for producing the signals in the pickup connected to the electronic circuit and in the pickup connected to the signal input of the amplifier, that were mentioned above.
  • the system is supplied from a source of electrical energy.
  • the electronic circuit may consist advantageously of a monostable single-stroke circuit or another circuit having similar function, that is to say, which, in response to an input pulse, produces another stable pulse whose constant duration constitutes the time base of the system.
  • the electronic circuit should meet the requirements of a minimal sensitivity to variations of voltage and temperature. Obviously, this condition is met in the case proposed as an example of the invention.
  • the electronic circuit is represented (by way of nonrestrictive example) by a monostable single-stroke" circuit, which among other possibilities could also be replaced by an electronic circuit consisting of a memory unit capable of receiving a pulse from the pick-up and being reset to zero by an oscillator through a Y gate connected (in its turn) to the memory unit; such a replacement does not modify the diagram that we shall examine below.
  • FIGURE shows the arrangement of the various elements.
  • the shaft is equipped with a pair of disks, each disk comprising magnetic elements situated in relatively oppolite positions at points near the periphery of the dis s.
  • the reference numeral 1 indicates a customary rotary driving shaft of the clock or watch mechanism
  • the reference numeral 2 indicates magnetic elements
  • the reference numeral 3 indicates a pick-up coil [receiving-emitting coil] connected to a monostable circuit designated by the reference numeral 4
  • the reference numeral 5 designates an amplifier
  • the reference numeral 6 a pick-up coil connected to the amplifier
  • the reference numeral 7 a pulsing coil likewise connected to the amplifier
  • the reference numeral 8 designates an optional amplifier
  • the reference numeral 9 a source of electrical energy.
  • the response of monostable circuit 4 consists in another pulse, whose duration constitutes the time base of the system, that is picked up by amplifier 5.
  • the application of the invention extends to other industrial fields; generally, it can be applied to any case where the rotation of a shaft is to be controlled so that it occurs in a constant time. Consequently, the arrangement is ideal for regulating the operation of the rotary mechanism of a record turn-table, a tape recorder, etc.
  • a system for adjusting the rotating speed of a driving shaft comprising first and second transducer means operatively coupled to said shaft for converting specific angular positions of said shaft into electrical signals, each of said transducers having an output where said electrical signals are provided; a monostable circuit having an input and an output for generating a pulse of predetermined constant duration at its output each time a signal is applied to its input, the output of said transducer being connected to the input of said monostable circuit; an amplifier having a signal input, an output and a blocking input; third transducer means operatively coupled to said shaft for converting electrical signals to mechanical pulses for influencing the motion of said shaft, said third transducer having an input for receiving electrical signals; the output of said second transducer being connected to the signal input of said amplifier; the output of said amplifier being connected to the input of said third transducenand the output of said monostable circuit being connected to said blocking input of said amplifier whereby said amplifier amplifies the signal from said second transducer and applies said amplified signal to said third transduc
  • a system for adjusting the rate of rotation of a drive shaft comprising:
  • a first transducer means rigidly coupled to said drive shaft and rotating therewith for generating a signal indicative of the position thereof and for responding to a signal to produce a rotary force for rotation of said rotary drive shaft;
  • second and third transducer means fixedly positioned at different locations along the path of rotation of said first transducer means for converting specific angular positions of said first transducer means into electrical signals, each of said second and third transducer means having an output where electrical signals are provided;
  • a monostable circuit means having an input and an output for generating a pulse of predetermined constant duration at its output each time a signal is applied to its input, the output of one of said second and third transducer means being connected to the input of said monostable circuit means;
  • amplifier means having a signal input, an output and a blocking input, the other of said second and third transducer means being connected to the signal input of said amplifier means, and the output of said monostable circuit means being connected to the blocking input of said amplifier means;
  • a fourth transducer means coupled to the output of said amplifier means and receiving an output pulse therefrom and positioned along the path of rotation of said first transducer means whereby said first transducer means may be driven by said amplifier means via said fourth transducer means,
  • said amplifier means only produces an output pulse when no output is produced by said monostable circuit means and when an input signal is received by said amplifier means at said signal input, said predetermined pulse of said monostable circuit means being chosen in accordance with the separation of said second and third transducer means and the desired rate of rotation of said rotary drive shaft, said amplifier means thereby providing an output pulse of longer duration when said rotary drive shaft rotates at a slower than desired rate and providing an output pulse of shorter duration when said rotary drive shaft rotates at a faster than desired rate, thereby maintaining the desired rate of rotation of said rotary drive shaft.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
  • Control Of Stepping Motors (AREA)
  • Control Of Velocity Or Acceleration (AREA)
  • Control Of Electric Motors In General (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
US00263275A 1971-06-15 1972-06-15 System for regulating rotary speed of a shaft Expired - Lifetime US3824780A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES392242A ES392242A1 (es) 1971-06-15 1971-06-15 Perfeccionamientos en los sistemas reguladores de velocidadde giro de un eje, de especial aplicacion en relojeria.

Publications (1)

Publication Number Publication Date
US3824780A true US3824780A (en) 1974-07-23

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ID=8458582

Family Applications (1)

Application Number Title Priority Date Filing Date
US00263275A Expired - Lifetime US3824780A (en) 1971-06-15 1972-06-15 System for regulating rotary speed of a shaft

Country Status (8)

Country Link
US (1) US3824780A (enExample)
BR (1) BR7203878D0 (enExample)
CA (1) CA966896A (enExample)
DE (1) DE2138252A1 (enExample)
ES (1) ES392242A1 (enExample)
FR (1) FR2142480A5 (enExample)
GB (1) GB1400164A (enExample)
IT (1) IT958337B (enExample)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE30928E (en) 1977-06-23 1982-05-11 Caterpillar Tractor Co. Engine control
AT369934B (de) * 1979-12-06 1983-02-10 Ife Gmbh Binaere drehzahlregeleinrichtung fuer wechselstrommotoren durch motorstrom -zweipunktbetrieb
ES2004090A6 (es) * 1987-02-13 1988-12-01 Remco Sa Unidad de control para regulaciones de motores de lavadora

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3134220A (en) * 1961-05-16 1964-05-26 Dichl Electric clock
US3221231A (en) * 1960-03-31 1965-11-30 Reich Robert Walter Electromagnetic impelling system for mechanical oscillators
US3225536A (en) * 1962-10-15 1965-12-28 Reich Robert Walter Electric clock
US3293568A (en) * 1963-02-20 1966-12-20 Junghans Geb Ag Amplitude stabilized electromechanical oscillator
US3451210A (en) * 1966-07-01 1969-06-24 Benrus Corp System for maintaining oscillations in an electric timing mechanism having an oscillatory element
US3512351A (en) * 1966-09-09 1970-05-19 Smiths Industries Ltd Electrical oscillation generators
US3568430A (en) * 1968-07-11 1971-03-09 Hamilton Watch Co Resistance bridge controlled timekeeping device
US3601975A (en) * 1969-04-23 1971-08-31 Timex Corp Horological movement utilizing a radioactivity detector and source

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3221231A (en) * 1960-03-31 1965-11-30 Reich Robert Walter Electromagnetic impelling system for mechanical oscillators
US3134220A (en) * 1961-05-16 1964-05-26 Dichl Electric clock
US3225536A (en) * 1962-10-15 1965-12-28 Reich Robert Walter Electric clock
US3293568A (en) * 1963-02-20 1966-12-20 Junghans Geb Ag Amplitude stabilized electromechanical oscillator
US3451210A (en) * 1966-07-01 1969-06-24 Benrus Corp System for maintaining oscillations in an electric timing mechanism having an oscillatory element
US3512351A (en) * 1966-09-09 1970-05-19 Smiths Industries Ltd Electrical oscillation generators
US3568430A (en) * 1968-07-11 1971-03-09 Hamilton Watch Co Resistance bridge controlled timekeeping device
US3601975A (en) * 1969-04-23 1971-08-31 Timex Corp Horological movement utilizing a radioactivity detector and source

Also Published As

Publication number Publication date
DE2138252A1 (de) 1972-12-21
CA966896A (en) 1975-04-29
IT958337B (it) 1973-10-20
FR2142480A5 (enExample) 1973-01-26
ES392242A1 (es) 1973-11-16
GB1400164A (en) 1975-07-16
BR7203878D0 (pt) 1973-05-24

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