[특허]Circuit arrangement for an electromagnetic holding brake

Circuit arrangement for an electromagnetic holding brake 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H02P-003/00 H02P-029/04 H02P-003/04 B60T-013/74 F16D-065/18 H02P-029/00 B60T-013/04 F16D-121/22 F16D-121/14
출원번호	US-0233958 (2016-08-11)
등록번호	US-9847741 (2017-12-19)
우선권정보	DE-10 2015 216 496 (2015-08-28)
발명자 / 주소	Schoenlinner, Markus von Le Suire, Christian
출원인 / 주소	DR. JOHANNES HEIDENHAIN GMBH
대리인 / 주소	Leydig, Voit & Mayer, Ltd.
인용정보	피인용 횟수 : 0 인용 특허 : 22

초록 ▼

A circuit arrangement is configured to supply an electromagnetic holding brake of an electric motor with an operating voltage for releasing the holding brake, and a voltage that is reduced relative to the operating voltage for holding the holding brake in the released position. The operating voltage is supplied from a higher-level control system disposed separately from the motor and the holding brake. The circuit arrangement is disposed in or on the motor or in or on the holding brake and includes a voltage regulator adapted to regulate, independently of the operating voltage, the reduced voltage to a fixed value after the holding brake is released.

대표청구항 ▼

1. A circuit arrangement for supplying an electromagnetic holding brake of an electric motor with an operating voltage from a higher-level control system disposed separately from the motor and the holding brake that releases the holding brake, and for supplying a holding voltage that is reduced relative to the operating voltage and holds the holding brake in the released position, the circuit arrangement comprising: a switching element connected to a terminal of the holding brake by which the operating voltage is applied to the holding brake;a voltage divider connected to receive and adjust a voltage tapped from the terminal of the holding brake relative to a reference voltage that is derived from an upper potential of the operating voltage;a comparator having a first input connected to receive the reference voltage, a second input connected to receive the voltage tapped from the terminal of the holding brake that was adjusted by the voltage divider and an output connected with the switching element, the comparator being configured to determine that the voltage at the second input has fallen below the reference voltage at the first input and to output a pulse-width modulated signal which operates the switching element in a pulsed mode so as to produce, on average, the holding voltage; anda starting capacitor connected with the second input of the comparator and dimensioned such that the pulse-width modulated signal is not emitted at the output of the comparator for an amount of time sufficient to initially apply the operating voltage to release the holding brake. 2. The circuit arrangement as recited in claim 1, further comprising a smoothing capacitor connected to the second input of the comparator so as to convert the voltage tapped from the holding brake to a triangular voltage. 3. The circuit arrangement as recited in claim 1, wherein the output of the comparator is coupled back to the first input via a resistor which is dimensioned such that a switching frequency of the switching element is in a range of 1-10 kHz. 4. The circuit arrangement as recited in claim 1, further comprising a Zener diode and a resistor connected with the upper potential of the operating voltage so as to produce the reference voltage at the first input of the comparator. 5. The circuit arrangement as recited in claim 1, further comprising a discharge diode configured to discharge the starting capacitor in a state in which no operating voltage is applied to the circuit arrangement. 6. The circuit arrangement as recited in claim 1, wherein the switching element is configured as an n-channel MOSFET connecting a negative terminal of the holding brake to the lower potential of the operating voltage. 7. The circuit arrangement as recited in claim 1, further comprising a free-wheeling switching element configured to block a free-wheeling current through the holding brake in a state in which no operating voltage is applied to the circuit arrangement. 8. The circuit arrangement as recited in claim 7, further comprising a suppressor diode connected in parallel with the free-wheeling switching element.

이 특허에 인용된 특허 (22)

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Andruet Jean-Claude (Opio FRX), Control device for a motor vehicle parking brake.
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Eccleston Larry, Controller for electric braking system.
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Eccleston Larry (Marshall MI), Controller for electric braking systems.
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Eccleston Larry (Marshall MI), Controller for electric braking systems.
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Eccleston Larry (Marshall MI), Controller for electric braking systems.
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Iacoponi Stefano (Turin ITX) Di Nunzio Vittorio (Turin ITX), Device for automatically adjusting the frequency of activation of a motor vehicle windscreen wiper.
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Frait John S. (Ann Arbor MI), Electric controller having output power limiting circuit.
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Cage Jerry L. (Granger IN), Fail safe circuit for an anti-lock braking system modulator drive.
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Allington Robert W. (Lincoln NE), Feedback system.
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Homann Reimer (Reinheim DEX) Raptopoulos Prodromos (Gross-Zimmern DEX), Method and apparatus for regulating the brake torque of an eddy current brake.
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Roth-Stielow Jorg,DEX ; Schmidt Josef,DEX, Method and circuit arrangement for operating an electromagnetically actuated mechanical brake of an electric motor.
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Schwartz Reiner,DEX, Method and circuit for controlling current in an inductive load.
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Palm William A. (Minnetonka MN), Motor brake circuit for magnetic disk drive system.
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Trmpler Walter (Karlsruhe DEX) Schmidt Josef (Graben-Neudorf DEX), Motor brake with single free wheeling diode connected in parallel with only one partial coil of brake magnet coil.
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Omoto Hideo (Hamamatsu JPX), Pickup device for disc player.
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Nykerk Todd M. (Reed City MI) Ingraham Ronald D. (Reed City MI) Strom Peter H. (Reed City MI), Pressure sensitive signal device for vehicle brake pedal.
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Snyder Robert C. (Country Club Hills IL), Systems and methods for controlling trailer brakes as a function of trailer wheel rotation.
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Snyder Robert C. (Country Club Hills IL), Trailer brake control system.
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Fontaine William G. (451 S. E. 3rd Ave. Pompano Beach FL 33060), Vehicle brake system.
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Abel Roy P. (1315 N. Columbus #13 Glendale CA 91202) Welcome Warren W. (Tarzana CA), Vehicle low speed warning system.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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연합인증

Circuit arrangement for an electromagnetic holding brake 원문보기

초록 ▼

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Circuit arrangement for an electromagnetic holding brake 원문보기

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이 특허에 인용된 특허 (22)

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