KR20010096718A - Control circuit for dc motor of electric power steering - Google Patents
Control circuit for dc motor of electric power steering Download PDFInfo
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- KR20010096718A KR20010096718A KR1020000019579A KR20000019579A KR20010096718A KR 20010096718 A KR20010096718 A KR 20010096718A KR 1020000019579 A KR1020000019579 A KR 1020000019579A KR 20000019579 A KR20000019579 A KR 20000019579A KR 20010096718 A KR20010096718 A KR 20010096718A
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- fet
- motor
- direction selection
- ecu
- selection signal
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P7/00—Arrangements for regulating or controlling the speed or torque of electric DC motors
- H02P7/03—Arrangements for regulating or controlling the speed or torque of electric DC motors for controlling the direction of rotation of DC motors
- H02P7/04—Arrangements for regulating or controlling the speed or torque of electric DC motors for controlling the direction of rotation of DC motors by means of a H-bridge circuit
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P7/00—Arrangements for regulating or controlling the speed or torque of electric DC motors
- H02P7/06—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current
- H02P7/18—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power
- H02P7/24—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices
- H02P7/28—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices
- H02P7/285—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only
- H02P7/29—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only using pulse modulation
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P1/00—Arrangements for starting electric motors or dynamo-electric converters
- H02P1/16—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters
- H02P1/18—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual dc motor
- H02P1/22—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual dc motor in either direction of rotation
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Power Steering Mechanism (AREA)
- Control Of Direct Current Motors (AREA)
Abstract
Description
본 발명은 전자 동력 조향 장치의 DC모터 제어회로에 있어서, 보다 상세하게는 ECU의 제어신호를 파워소자 개수의 절반으로 줄여 H형 브리지에 의한 DC모터의 구동시 1개의 제어신호로 상단의 일측 파워소자와 하단의 타측 파워소자를 동시에 구동시키되 상단 파워소자는 턴온시키고 하단 파워소자만을 PWM제어하여 구동시켜 파워소자의 스위칭손실을 줄이고 열적손실에 의한 성능저하와 소자의 소손을 방지할 수 있도록 한 전자 동력 조향 장치의 DC 모터 제어회로에 관한 것이다.The present invention is a DC motor control circuit of the electronic power steering device, more specifically, the control signal of the ECU is reduced to half of the number of power elements in one power signal at the top of the one control signal when driving the DC motor by the H-type bridge An electronic device that drives the device and the other power device at the bottom at the same time, but turns on the top power device and drives only the bottom power device by PWM control to reduce switching loss of the power device and prevent performance degradation and thermal damage of the device. The present invention relates to a DC motor control circuit of a power steering device.
일반적으로 유압작동기를 조향 보조력의 발생원으로 사용하는 유압식 동력 조향장치는 조향차륜에 연결된 출력축과 핸들에 연결되는 입력축용 토션바를 통하여 동축상에 연결하여 구성된다. 그래서 핸들에 조향 토오크가 가해질 경우 이에 수반된 토션바의 비틀림에 따라서 입력축과 출력축간에 상대각 변위가 발생하게 된다. 이때 발생된 상대각 변위에 따라 입력축 및 밸브바디간에 형성된 로터리밸브에 의해 조향 토오크의 방향에 해당하는 작동실로 유압을 공급하여 조향 보조력을 얻게 된다.In general, a hydraulic power steering apparatus using a hydraulic actuator as a source of steering assistance force is configured to be coaxially connected through an output shaft connected to a steering wheel and an input shaft torsion bar connected to a handle. Therefore, when steering torque is applied to the handle, relative angle displacement occurs between the input shaft and the output shaft in accordance with the torsion of the torsion bar. At this time, the steering assistance force is obtained by supplying hydraulic pressure to the operating chamber corresponding to the direction of steering torque by a rotary valve formed between the input shaft and the valve body according to the generated relative angular displacement.
이에 반해 전자 동력 조향 장치(Electric Power Streering)은 엔진의 동력이나 유압작동기 대신 배터리의 전기로 DC모터를 작동시켜 조향조작에 따라 DC모터의 회전방향을 조절하여 조향력을 얻게 되기 때문에 엔진룸의 공간효율, 연료절감, 안전성 등의 장점이 있다. 특히 운전자의 개성에 맞춰서 동력 조향 장치의 특성을 조절할 수 있으므로 대량생산되는 자동차의 획일성을 배재할 수 있는 특징이 있다.On the other hand, the electric power steering system operates the DC motor with the battery electricity instead of the engine power or hydraulic actuator to adjust the rotational direction of the DC motor according to the steering operation to obtain steering power. It has advantages such as fuel saving and safety. In particular, the characteristics of the power steering device can be adjusted according to the driver's personality, so there is a feature that can exclude the uniformity of mass-produced cars.
도 1은 종래의 전자 동력 조향 장치의 DC모터 제어회로를 나타낸 회로구성도이다.1 is a circuit diagram illustrating a DC motor control circuit of a conventional electronic power steering apparatus.
여기에 도시된 바와 같이 DC모터(10)를 중심으로 제 1내지 제4FET(21,22,23,24)가 H형태로 각각 설치되고 ECU(40)에서 출력되는 제 1내지 제 4FET(21,22,23,24)를 구동시키기 위한 제어신호를 입력받아 제 1내지 제 4FET(21,22,23,24)를 구동시키기 위한 제 1내지 제 4FET드라이버(31,32,33,34)가 설치된다.As shown here, the first to fourth FETs 21, 22, 23, and 24 are installed in the H shape with respect to the DC motor 10, respectively, and the first to fourth FETs 21, which are output from the ECU 40. First to fourth FET drivers 31, 32, 33, and 34 are installed to receive the control signals for driving the 22, 23, and 24 to drive the first to fourth FETs 21, 22, 23, and 24. do.
즉, ECU(40)에서 출력되는 제 1내지 제 4FET(21,22,23,24)를 구동시키기 위한 제어신호를 출력하면 제 1내지 제 4FET드라이버(31,32,33,34)에서 각각 제 1내지 제 4FET(21,22,23,24)를 실질적으로 구동시키게 된다.That is, when the control signal for driving the first to fourth FETs 21, 22, 23, and 24 output from the ECU 40 is outputted, the first to fourth FET drivers 31, 32, 33, and 34 are respectively made. The first to fourth FETs 21, 22, 23, and 24 are substantially driven.
따라서, 제 1FET(21)와 제 4FET(24)를 구동시키거나 제 2FET(22)와 제 3FET(23)를 구동시킴에 따라 DC모터(10)를 양방향 제어할 수 있게 된다.Accordingly, the DC motor 10 can be bidirectionally controlled by driving the first FET 21 and the fourth FET 24 or the second FET 22 and the third FET 23.
즉, 제 1FET(21)와 제 4FET(24)를 구동시키게 되면 전류 패스가 전원단(B+), 제 1FET(21), DC모터(10), 제 4FET(24), 접지단(GND)으로 구성되며, 제 2FET(22)와 제 3FET(23)를 구동시키게 되면 전류 패스가 전원단(B+), 제 2FET(22), DC모터(10), 제 3FET(33), 접지단(GND)으로 구성되어 DC모터(10)의 회전 방향을 조절할 수 있다. 또한, DC모터(10)에 흐르는 전류량은 제 1내지 제 4FET(21,22,23,24)를 구동시키기 위한 PWM 제어신호의 펄스폭으로 조절하게 된다.That is, when the first FET 21 and the fourth FET 24 are driven, the current path is supplied to the power supply terminal B +, the first FET 21, the DC motor 10, the fourth FET 24, and the ground terminal GND. When the second FET 22 and the third FET 23 are driven, the current path is the power supply terminal B +, the second FET 22, the DC motor 10, the third FET 33, and the ground terminal GND. It can be configured to adjust the rotation direction of the DC motor 10. In addition, the amount of current flowing through the DC motor 10 is adjusted by the pulse width of the PWM control signal for driving the first to fourth FETs 21, 22, 23, and 24.
이와 같이 ECU(40)에서 제 1내지 제 4FET(21,22,23,24)를 구동시키기 위한 PWM제어신호는 제 1FET(21)와 제 4FET(24)를 구동시키기 위한 제어신호가 동시에 출력되며, 제 2FET(22)와 제 3FET(23)를 구동시키기 위한 제어신호가 동시에 출력된다.As such, the PWM control signal for driving the first to fourth FETs 21, 22, 23, and 24 in the ECU 40 is simultaneously outputted with the control signals for driving the first FET 21 and the fourth FET 24. The control signals for driving the second FET 22 and the third FET 23 are simultaneously output.
그런데, 전원단(B+)과 DC모터(10)사이에 매개된 제 1FET(21)와 제 2FET(22)는 접지단(GND)과 DC모터(10) 사이에 매개된 제 3FET(23)와 제 4FET(24)에 비해 구동시키기 위한 전위가 두배가 필요하게 된다. 그러나, 두배의 전위를 만드는 회로는 손실을 갖게 되고, 이로 인해 FET를 구동하는 구동전위가 서로 상이하여 요구출력을 제대로 발휘하지 못하고 열손실로 소모되는 문제점이 있다.However, the first FET 21 and the second FET 22 interposed between the power supply terminal B + and the DC motor 10 are connected to the third FET 23 interposed between the ground terminal GND and the DC motor 10. As compared with the fourth FET 24, the potential for driving is doubled. However, the circuit making the double potential has a loss, and thus, the driving potentials for driving the FETs are different from each other, so that the required output is not properly exhibited and heat loss is consumed.
본 발명은 상기와 같은 문제점을 해결하기 위해 창작된 것으로서, 본 발명의 목적은 ECU의 제어신호를 파워소자 개수의 절반으로 줄여 H형 브리지에 의한 DC모터의 구동시 1개의 제어신호로 상단의 일측 파워소와 하단의 타측 파워소자를 동시에 구동시키되 상단 파워소자를 턴온시킨 상태에서 하단 파워소자만을 PWM제어하여 구동시켜 파워소자의 스위칭손실을 줄이고 열적손실에 의한 성능저하와 소자의 소손을 방지할 수 있도록 한 전자 동력 조향 장치의 DC 모터 제어회로에 관한 것이다.The present invention was created to solve the above problems, and an object of the present invention is to reduce the control signal of the ECU to half of the number of power elements, and one side of the upper side with one control signal when driving the DC motor by the H-type bridge. Drives the power source and the other power device at the bottom at the same time, but operates only the lower power device by PWM control while the top power device is turned on to reduce switching loss of the power device and prevent performance degradation and burnout of the device due to thermal loss. The present invention relates to a DC motor control circuit of an electronic power steering device.
도 1은 종래의 전자 동력 조향 장치의 DC모터 제어회로를 나타낸 회로구성도이다.1 is a circuit diagram illustrating a DC motor control circuit of a conventional electronic power steering apparatus.
도 2는 본 발명에 의한 전자 동력 조향 장치의 DC모터 제어회로를 나타낸 회로구성도이다.2 is a circuit diagram illustrating a DC motor control circuit of the electronic power steering apparatus according to the present invention.
- 도면의 주요부분에 대한 부호의 설명 --Explanation of symbols for the main parts of the drawings-
10 : DC모터 21,22,23,24 : 제 1내지 제 4FET10: DC motor 21, 22, 23, 24: first to fourth FET
31,32,33,34 : 제 1내지 제 4FET드라이버31,32,33,34: 1st to 4th FET driver
40 : ECU 51,52 : 제 1내지 제 2게이트40: ECU 51,52: first to second gate
상기와 같은 목적을 실현하기 위한 본 발명은 DC모터를 중심으로 전원단과 제 1FET와 DC모터와 제 4FET와 접지단으로 제 1방향 패스를 형성하고 DC모터를 중심으로 전원단과 제 2FET와 DC모터와 제 3FET와 접지단으로 제 2방향 패스를 형성하여 ECU에서 출력되는 제어신호에 따라 제 1내지 제 4FET를 구동시키는 제 1내지 제 4FET드라이버로 이루어진 전자 동력 조향 장치의 DC모터 제어회로에 있어서, 제1FET드라이버의 입력단에는 ECU에서 출력되는 제 1방향 선택신호가 연결되고, 제 2FET드라이버의 입력단에는 ECU에서 출력되는 제 2방향 선택신호가 연결되고, 제 3FET드라이버의 입력단에는 ECU에서 출력되는 제 2방향 선택신호와 PWM제어신호를 입력받아 제 2방향 선택신호가 액티브 상태일 때 PWM제어신호를 출력하는 제 1게이트의 출력단과 연결되고, 제 4FET드라이버의 입력단에는 ECU에서 출력되는 제 1방향 선택신호와 PWM제어신호를 입력받아 제 1방향 선택신호가 액티브 상태일 때 PWM제어신호를 출력하는 제 2게이트의 출력단과 연결된 것을 특징으로 한다.The present invention for realizing the above object is to form a first directional path to the power supply stage, the first FET, the DC motor, the fourth FET and the ground terminal around the DC motor, and the power supply stage, the second FET and the DC motor In the DC motor control circuit of the electronic power steering device comprising a first to fourth FET driver to form a second directional path to the third FET and the ground terminal to drive the first to fourth FET according to the control signal output from the ECU. The first direction selection signal output from the ECU is connected to the input terminal of the 1FET driver, the second direction selection signal output from the ECU is connected to the input terminal of the second FET driver, and the second direction output from the ECU is connected to the input terminal of the third FET driver. It is connected to the output terminal of the first gate that receives the selection signal and the PWM control signal and outputs the PWM control signal when the second direction selection signal is active. Ryeokdan is characterized in that the first direction select signal and the first direction select signal receives the PWM control signal outputted from the ECU is associated with the second gate output terminal for outputting a PWM control signal when the active state.
위와 같이 이루어진 본 발명의 작동을 설명하면 다음과 같다.Referring to the operation of the present invention made as described above are as follows.
전자 동력 조향 장치의 ECU에서 DC모터의 방향을 설정하기 위한 제 1방향 선택신호나 제 2방향 선택신호를 액티브 시킬 때 동시에 제 1과 제 4FET가 동시에 작동되거나 제 2와 제 3FET가 동시에 작동될 뿐만 아니라 상단에 설치된 즉, 전원단과 연결된 제 1과 제 2FET는 작동될 때 상시 온 상태로 작동되고 DC모터의 작동량은 제 3과 제 4FET를 PWM제어에 의해 스위칭시킴으로써 스위칭에 의한 열적손실을 줄일 수 있도록 작동된다.When the first direction selection signal or the second direction selection signal for setting the direction of the DC motor is activated in the ECU of the electronic power steering device, the first and fourth FETs are simultaneously operated or the second and third FETs are simultaneously operated. Rather, the first and second FETs installed at the top, i.e., connected to the power supply, are always on when operated, and the amount of operation of the DC motor can reduce the thermal loss due to switching by switching the third and fourth FETs by PWM control. It works.
이하, 본 발명의 바람직한 실시예를 첨부된 도면을 참조하여 설명한다. 또한 본 실시예는 본 발명의 권리범위를 한정하는 것은 아니고, 단지 예시로 제시된 것이며 종래 구성과 동일한 부분은 동일한 부호 및 명칭을 사용한다.Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings. In addition, the present embodiment is not intended to limit the scope of the present invention, but is presented by way of example only and the same parts as in the conventional configuration using the same reference numerals and names.
도 2는 본 발명에 의한 전자 동력 조향 장치의 DC모터 제어회로를 나타낸 회로구성도이다.2 is a circuit diagram illustrating a DC motor control circuit of the electronic power steering apparatus according to the present invention.
여기에 도시된 바와 같이 DC모터(10)를 중심으로 전원단(B+)과 제 1FET(21)와 DC모터(10)와 제 4FET(24)와 접지단(GND)으로 제 1방향 패스를 형성하고 DC모터(10)를 중심으로 전원단(B+)과 제 2FET(22)와 DC모터(10)와 제 3FET(23)와 접지단(GND)으로 제 2방향 패스를 형성하여 ECU(40)에서 출력되는 제 1방향 선택신호와 제 2방향 선택신호에 의해 제 1내지 제 4FET(21,22,23,24)를 구동시키는 제 1내지 제 4FET드라이버(31,32,33,34)로 이루어진다.As shown here, a first directional path is formed by the power supply terminal B +, the first FET 21, the DC motor 10, the fourth FET 24, and the ground terminal GND around the DC motor 10. And a second directional path around the DC motor 10 to the power supply terminal B +, the second FET 22, the DC motor 10, the third FET 23, and the ground terminal GND. The first to fourth FET drivers 31, 32, 33, 34 to drive the first to fourth FETs 21, 22, 23, and 24 by the first direction selection signal and the second direction selection signal output from .
그리고, 제 1FET드라이버(31)의 입력단에는 ECU(40)에서 출력되는 제 1방향 선택신호가 연결되고, 제 2FET드라이버(32)의 입력단에는 ECU(40)에서 출력되는 제 2방향 선택신호가 연결되고, 제 3FET드라이버(33)의 입력단에는 ECU(40)에서 출력되는 제 2방향 선택신호와 PWM제어신호를 입력받아 제 2방향 선택신호가 액티브 상태일 때 PWM제어신호를 출력하는 제 1NAND게이트(51)의 출력단과 연결되고, 제 4FET드라이버(24)의 입력단에는 ECU(40)에서 출력되는 제 1방향 선택신호와 PWM제어신호를 입력받아 제 1방향 선택신호가 액티브 상태일 때 PWM제어신호를 출력하는 제 2NAND게이트(52)의 출력단과 연결된다.A first direction selection signal output from the ECU 40 is connected to an input terminal of the first FET driver 31, and a second direction selection signal output from the ECU 40 is connected to an input terminal of the second FET driver 32. The first NAND gate receives the second direction selection signal and the PWM control signal output from the ECU 40 and outputs the PWM control signal when the second direction selection signal is active at the input terminal of the third FET driver 33. 51 is connected to the output terminal of the fourth FET driver 24, the first direction selection signal and the PWM control signal output from the ECU 40 receives the PWM control signal when the first direction selection signal is active. It is connected to the output terminal of the second NAND gate 52 for outputting.
위와 같이 이루어진 본 발명에 의한 실시예의 작동을 설명하면 다음과 같다.Referring to the operation of the embodiment according to the present invention made as described above are as follows.
먼저, 제 1방향을 선택할 경우 ECU(40)의 제 1방향 선택신호가 고전위 신호로 액티브되면, 이 액티브된 제 1방향 선택신호는 곧바로 제 2FET드라이버(32)의 입력단으로 인가되어 제 2FET(22)를 턴온시킨다. 그리고, 제 1방향 선택신호와 DC모터(10)의 출력을 제어하기 위한 PWM제어신호를 입력받은 제 1NAND게이트(51)는 입력되는 PWM제어신호에 대한 반전신호를 출력하여 제 3FET드라이버(33)에 의해 제3FET(23)의 온오프를 제어한다.First, if the first direction selection signal of the ECU 40 is activated as a high potential signal when the first direction is selected, the activated first direction selection signal is directly applied to the input terminal of the second FET driver 32 to provide a second FET ( Turn on 22). In addition, the first NAND gate 51 receiving the first direction selection signal and the PWM control signal for controlling the output of the DC motor 10 outputs an inverted signal with respect to the input PWM control signal, thereby transmitting a third FET driver 33. By controlling the on and off of the third FET 23.
반면에, 제 2방향 선택신호는 저전위 신호로 디스에이블되고, 따라서, 제 1FET(21)는 오프되고, 제 2NAND게이트(52)도 입력되는 PWM제어신호의 변동과 관계없이 저전위 신호를 출력하여 제 4FET(24)도 오프시키게 된다.On the other hand, the second direction selection signal is disabled as the low potential signal, so that the first FET 21 is turned off and the second NAND gate 52 also outputs the low potential signal regardless of the variation of the PWM control signal input thereto. Thus, the fourth FET 24 is also turned off.
따라서, 전원단(B+)과 제 2FET(22)와 DC모터(10)와 제 3FET(23)와 접지단(GND)을 이르는 제 1방향 패스가 형성되어 DC모터(10)를 작동시키게 된다.Accordingly, a first direction path is formed between the power supply terminal B +, the second FET 22, the DC motor 10, the third FET 23, and the ground terminal GND to operate the DC motor 10.
한편, 제 2방향을 선택할 경우 ECU(40)의 제 2방향 선택신호가 고전위 신호로 액티브되면, 이 액티브된 제 2방향 선택신호는 곧바로 제 1FET드라이버(31)의 입력단으로 인가되어 제 1FET(21)를 턴온시킨다. 그리고, 제 2방향 선택신호와 DC모터(10)의 출력을 제어하기 위한 PWM제어신호를 입력받은 제 2NAND게이트(52)는 입력되는 PWM제어신호에 대한 반전신호를 출력하여 제 4FET드라이버(34)에 의해 제 4FET(24)의 온오프를 제어한다.On the other hand, when the second direction selection signal of the ECU 40 is activated as a high potential signal when the second direction is selected, the activated second direction selection signal is immediately applied to the input terminal of the first FET driver 31 to provide the first FET ( Turn on 21). In addition, the second NAND gate 52, which receives the second direction selection signal and the PWM control signal for controlling the output of the DC motor 10, outputs an inverted signal with respect to the input PWM control signal to output the fourth FET driver 34. This controls the on and off of the fourth FET 24.
반면에, 제 1방향 선택신호는 저전위 신호로 디스에이블되고, 따라서, 제 2FET(22)는 오프되고, 제 1NAND게이트(51)도 입력되는 PWM제어신호의 변동과 관계없이 저전위 신호를 출력하여 제 1FET(21)도 오프시키게 된다.On the other hand, the first direction selection signal is disabled as the low potential signal, so that the second FET 22 is turned off and the first NAND gate 51 also outputs the low potential signal regardless of the variation of the PWM control signal input thereto. Thus, the first FET 21 is also turned off.
따라서, 전원단(B+)과 제 1FET(21)와 DC모터(10)와 제 4FET(24)와 접지단(GND)을 이르는 제 2방향 패스가 형성되어 DC모터(10)를 작동시키게 된다.Accordingly, a second directional path is formed between the power supply terminal B +, the first FET 21, the DC motor 10, the fourth FET 24, and the ground terminal GND to operate the DC motor 10.
상기한 바와 같이 본 발명은 ECU의 제어신호를 파워소자 개수의 절반으로 줄여 H형 브리지에 의한 DC모터의 구동시 1개의 제어신호로 상단의 일측 파워소자와 하단의 타측 파워소자를 동시에 구동시키되 상단 파워소자는 턴온시키고 하단 파워소자만을 PWM제어하여 구동시켜 파워소자의 스위칭손실을 줄이고 열적손실에 의한 성능저하와 소자의 소손을 방지할 수 있는 이점이 있다.As described above, the present invention reduces the control signal of the ECU to half of the number of power devices and simultaneously drives one power device on the top and the other power device on the bottom with one control signal when the DC motor is driven by the H-type bridge. The power device is turned on and driven by PWM control of only the lower power device, thereby reducing switching loss of the power device and preventing performance degradation and burnout of the device.
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100695405B1 (en) * | 2003-11-26 | 2007-03-15 | 주식회사 만도 | Motor driving control circuit in eps system |
KR20120001962A (en) * | 2010-06-30 | 2012-01-05 | 콘티넨탈 오토모티브 시스템 주식회사 | Controlling system for h-bridge and method thereof |
KR20140057877A (en) * | 2012-11-05 | 2014-05-14 | 콘티넨탈 오토모티브 시스템 주식회사 | System and method for controlling hybrid bridge circuit |
US11618496B2 (en) | 2020-12-01 | 2023-04-04 | Hyundai Mobis Co., Ltd. | Motor control apparatus and method of electric power steering system |
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JPH04364377A (en) * | 1991-06-11 | 1992-12-16 | Matsushita Electric Works Ltd | Inverter equipment |
US5859519A (en) * | 1997-05-29 | 1999-01-12 | General Electric Company | Single phase motor drive |
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- 2000-04-14 KR KR1020000019579A patent/KR20010096718A/en not_active Application Discontinuation
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH04364377A (en) * | 1991-06-11 | 1992-12-16 | Matsushita Electric Works Ltd | Inverter equipment |
US5859519A (en) * | 1997-05-29 | 1999-01-12 | General Electric Company | Single phase motor drive |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100695405B1 (en) * | 2003-11-26 | 2007-03-15 | 주식회사 만도 | Motor driving control circuit in eps system |
KR20120001962A (en) * | 2010-06-30 | 2012-01-05 | 콘티넨탈 오토모티브 시스템 주식회사 | Controlling system for h-bridge and method thereof |
KR20140057877A (en) * | 2012-11-05 | 2014-05-14 | 콘티넨탈 오토모티브 시스템 주식회사 | System and method for controlling hybrid bridge circuit |
US11618496B2 (en) | 2020-12-01 | 2023-04-04 | Hyundai Mobis Co., Ltd. | Motor control apparatus and method of electric power steering system |
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