[특허]Automatic fault monitoring system and motor control system incorporating same

Automatic fault monitoring system and motor control system incorporating same 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H02H-005/04
출원번호	US-0505695 (1995-07-21)
발명자 / 주소	Giordano Raymond Louis (Flemington NJ)
출원인 / 주소	Harris Corporation (Palm Bay FL 02)
인용정보	피인용 횟수 : 26 인용 특허 : 0

초록 ▼

An automatic fault monitoring system prevents the detection of fault conditions during operating modes or conditions that can produce false fault conditions. A motor control system that utilizes an H-bridge circuit having active devices, preferably field effect transistors, in each arm of the bridge. The motor is connected in the leg of the bridge. Currents and voltages are sensed in each arm as different operating conditions represented by input control signals, which may be computer generated, drive the bridge and place the transistors in different states (on or off). Such operating conditions include rotation of the motor in opposite directions and reversal of direction. Fault detection logic is responsive to currents and voltages in the arms and leg of the bridge and provides outputs indicative of over-current fault conditions in the arm and open circuit fault conditions in the leg. Fault detection control logic analyzes the input control signals and also applies them to change the state of the transistors in the H-bridge. When the control signal inputs and the sequence in which they occur represents a command to the H-bridge to reverse the direction of rotation of the motor, the fault detection logic is inhibited thereby preventing false detection of over-current conditions that can occur in response to the back EMF generated by the motor as it stalls and stops briefly while reversing direction of rotation. The fault detection control logic also enables the detection of open load fault condition during states where the motor is being driven in either direction of rotation, but not when a reversal of rotation is occurring or the motor is started from a stopped position and the current in the motor must build exponentially.

대표청구항 ▼

A system for monitoring a circuit which drives a load in response to control signals, which select a plurality of operating conditions for fault conditions in said circuit, which system comprises means in said circuit for providing a plurality of outputs representing the operating conditions of said circuit, means for detecting said fault conditions, and means responsive to said control signals for enabling and inhibiting said fault detecting means to prevent operation of said fault detecting means upon selection of certain of said operating conditions; wherein said fault detecting means comprises means responsive to first ones of said plurality of outputs for detecting a circuit through said load being open as a first fault event, and means responsive to second ones of said plurality of outputs for detecting current through said load exceeding a certain limit as a second fault event; and wherein said enabling and inhibiting means comprises means responsive to said control signals which represent a first operating condition where current to said load reverses direction for inhibiting said fault detecting means from detecting said first event, and said enabling and inhibiting means further comprises means responsive to said control signals which represent second and third operating conditions where current flows through said load in first or second opposite directions for enabling said fault detecting means for detecting said second event while inhibiting said fault detecting means from detecting said second event when said control signals represent said first operating condition.

이 특허를 인용한 특허 (26)

Siman-Tov, Alon, Apparatus and method for current control in H-Bridge load drivers.
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Garneyer, Eckart; Haggenmiller, Christoph, Apparatus and method for recognizing an error in a power bridge circuit.
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Gantioler Josef,DEX, Bridge circuit for switching high currents.
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Terry,Robert L.; Wyatt,Arnold G., Brushless and sensorless DC motor control system with locked and stopped rotor detection.
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Solie Eric M. ; Williams Robert A., Brushless dc motor PWM scheme for quiet commutation.
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Kaiser Uwe,DEX, Circuit arrangement for controlling a reversible D.C. motor.
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Swize, Gregory Emil, Clamping circuit and method for DMOS drivers.
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Burkatovsky,Vitaly, Configurable electronic control system and diagnostic method.
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Barth, Martin, Diagnosis of over-current conditions in bipolar motor controllers.
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Barth, Martin, Diagnosis of over-current conditions in bipolar motor controllers.
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Lin,Lain ken; Chang,Sans; Chiu,Magellan; Huang,Wen shi, Driving circuit for switches of direct current fan motor.
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Herbst, Walter B., Electric skillet with magnetic self-reversing stirrer that is removable.
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Berroth, Hansj?rg; Hahn, Alexander; Heller, Frank; Jeske, Frank; Karwath, Arno; Kuner, Arnold; Schondelmaier, Hans-Dieter; Rappenecker, Hermann; Strasser, G?nther, Electronically commutated motor.
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Williams Kevin Michael, Fault control circuit for switched power supply.
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Horchler Wolfgang,DEX ; Mueller Reinhard,DEX, Integrated full bridge circuit with four transistors.
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Nishibe, Yasushi; Kishi, Hiroki, Load drive control circuit.
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Patrick A. O'Gorman, Method and system for testing continuity of a motor and associated drive circuitry.
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Berroth, Hansj?rg; Hahn, Alexander; Heller, Frank; Jeske, Frank; Karwath, Arno; Kuner, Arnold; Schondelmaier, Hans-Dieter; Rappenecker, Hermann; Strasser, G?nther, Method for commutating an electronically commutated DC motor, and motor for carrying out said method.
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Budmiger Thomas,CHX, Method of regulating the coil current of electromagnetic flow sensors.
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Takatsuka Yuji,JPX ; Ohtagaki Shigeki,JPX, Motor driving apparatus.
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Deng, Chunxing; Luo, Wenli, Over current detection circuits for motor driver.
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Pullen Stuart W., Overcurrent sensing circuit and self adjusting blanking.
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Xi, Junnan, Pre-drive circuit for brushless DC single-phase motor.
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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

내보내기 구분	파일저장 인쇄 메일전송
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저장형식	Text(ASCII format) Excel format PIAS분석(.xls)
메일정보	받는사람 (필수) @ 보내는사람 (선택) @ 제목 내용 KISTI 검색결과 이메일 서비스
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Automatic fault monitoring system and motor control system incorporating same 원문보기

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Automatic fault monitoring system and motor control system incorporating same 원문보기

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이 특허를 인용한 특허 (26)

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