KR20170027186A

KR20170027186A - Control apparatus of electronic active rolling stabilizer system and method thereof

Info

Publication number: KR20170027186A
Application number: KR1020150123805A
Authority: KR
Inventors: 심경훈
Original assignee: 주식회사 만도
Priority date: 2015-09-01
Filing date: 2015-09-01
Publication date: 2017-03-09

Abstract

The controller of the electronic active stabilizer system according to an embodiment of the present invention includes an inverter electrically connected to a three-phase motor for generating rotational power of a stabilizer bar of a vehicle and converting a DC power into a three-phase AC power; And a relay element for short-circuiting the U-phase, V-phase, and W-phase power applied to the three-phase motor by controlling a plurality of switch elements included in the inverter when an abnormality occurs in the electronic active stabilizer system .

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an electronic active stabilizer system,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control apparatus and a control method for a vehicle, and more particularly, to a control apparatus and a control method of an electronic active stabilizer system for controlling the roll behavior of a vehicle.

In the case of an electronic active rolling stabilizer (eARS) system that controls the roll motion of a vehicle, the roll angle is changed in the turning and turning sections of the vehicle to enhance the safety of the vehicle.

The electronic active stabilizer system receives the driving information of the vehicle through a lateral acceleration sensor, a vehicle speed sensor, a steering angle sensor, etc., and calculates an appropriate roll moment by using the information. The roll moment is transmitted as a torque value .

In a vehicle equipped with such an electronic active stabilizer system, a failure may be caused by an external environment such as an electronic control unit (ECU), communication, or a sensor during control in a state where the roll behavior is large. In this case, There is a problem that the vehicle may be shaken due to the force applied to the vehicle.

Therefore, if the electronic active stabilizer system continues to operate in a faulty condition, it may lead to a greater accident, so after the failure, the stabilizer bar should be set to be fixed. Braking of the three-phase motor driving the stabilizer bar is required for fixing the stirrer bar.

The following prior art discloses an active roll control device for a vehicle configured to have an actuator with a simple configuration and a small number of component parts, and to selectively stop the rotation of the stirrer bar, and discloses the technical gist of the present invention not.

Korean Patent Publication No. 10-2010-0029386

The controller and the control method of the electronic active stabilizer system according to an embodiment of the present invention aim at solving the above-mentioned problems.

When the abnormality of the system is detected in the middle of the operation of the electronic active stabilizer system including the sensor for detecting the behavior of the vehicle, the operation of the electromagnetic active stabilizer system is stopped by generating a braking torque in the three- And to provide a control device and a control method of an electronic active stabilizer system capable of being operated.

The solution to the problem of the present invention is not limited to those mentioned above, and other solutions not mentioned can be clearly understood by those skilled in the art from the following description.

The inverter includes a first switch, a second switch, and a third switch, one side of which is connected to the positive terminal of the DC power supply, and the other of which is disposed in parallel; A fourth switch, a fifth switch and a sixth switch, one side of which is connected in series with the other side of the first switch, the second switch and the third switch, and the other side of which is connected to the negative terminal of the DC power supply , A first node between the first switch and the fourth switch, a second node between the second switch and the fifth switch, and a third node between the third switch and the sixth switch are connected to the three-phase motor Phase, V-phase, and W-phase power supplies to the three-phase motor, and the relay device controls operations of the first to sixth switches to short-circuit the U-phase, V- .

It is preferable that the relay device controls the operation of the first switch, the second switch and the third switch at the same time or controls the operations of the fourth switch, the fifth switch and the sixth switch simultaneously.

Wherein the first switch to the sixth switch are MOSFET devices and the relay device is connected to the gates of the first switch, the second switch and the third switch, or the fourth switch, the fifth switch and the sixth switch It is preferable to be connected to the gate.

At least one of the paths connecting the relay element and the first switch to the sixth switch is provided with a diode for preventing current from flowing back from at least one of the first switch to the relay element to the relay element .

The control method of the electronic active stabilizer system according to an embodiment of the present invention includes an inverter electrically connected to a three-phase motor for generating a rotational power of a stabilizer bar of a vehicle and converting an AC power source into a three- And a relay device for controlling the plurality of switch elements included in the inverter to short-circuit the power supplies of the U, V, and W phases applied to the three-phase motor when an abnormality occurs in the electronic active stabilizer system The present invention relates to a control method of an electronic active stabilizer system using an electronic active stabilizer system, comprising: a first step of determining whether an electronic active stabilizer system is abnormal; A second step of the electronic control unit controlling the relay element when it is determined in the first step that there is an abnormality in the electronic active stabilizer system; And a third step of generating a braking force to the three-phase motor by short-circuiting the U-phase power source, the V-phase power source, and the W-phase power source applied to the three-phase motor based on the control of the relay device.

The controller and the control method of the electronic active stabilizer system according to the embodiment of the present invention short-circuits the U, V, and W phase power applied to the three-phase motor by using one relay element, By generating a braking torque in the motor, the safety of the driver can be ensured in the event of a system malfunction.

Further, by implementing such a top lock using one small relay element, the system can be downsized and the cost can be reduced.

The effects of the present invention are not limited to those mentioned above, and other effects not mentioned may be clearly understood by those skilled in the art from the following description.

1 and 2 are circuit diagrams showing an electronic active stabilizer system according to an embodiment of the present invention.
FIG. 3 is a flowchart illustrating a control method of an electronic active stabilizer system according to an embodiment of the present invention in a time-series manner.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the like elements throughout.

In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail. It is to be noted that the accompanying drawings are only for the purpose of facilitating understanding of the present invention, and should not be construed as limiting the scope of the present invention with reference to the accompanying drawings.

Hereinafter, a control apparatus for an electronic active stabilizer system according to an embodiment of the present invention will be described with reference to FIGS. 1 and 2. FIG. 1 and 2 are circuit diagrams of an electronic active stabilizer system according to an embodiment of the present invention.

The controller of the electronic active stabilizer system according to an embodiment of the present invention relates to a control apparatus of an electronic active stabilizer system for controlling the roll behavior of a vehicle and includes an inverter 200 And a relay element 400. [0050]

The inverter 200 is electrically connected to the three-phase motor 100 that generates the rotational power of the stabilizer bar of the vehicle and has a function of converting DC power into three-phase AC power, that is, power of U phase, V phase and W phase .

Specifically, the inverter 200 includes a first switch 210, a second switch 220, and a third switch 230, which are connected in parallel to the positive terminal (+) of the DC power source, The fourth switch 240 (240) is connected in series with the other side of the first switch 210, the second switch 220 and the third switch 230 and the other side is connected to the negative terminal (- ), A fifth switch 250 and a sixth switch 260. [

1 and 2, a first node N1 is provided between the first switch 210 and the fourth switch 240 to branch the path for supplying the U phase power to the three-phase motor 100, . Further, a second node N2 is formed between the second switch 220 and the fifth switch 250, the path for supplying the V phase power to the three-phase motor 100 is branched. Similarly, a third node N3 is formed between the third switch 230 and the sixth switch 260, the path for supplying the W phase power to the three-phase motor 100 is branched. The inverter pre-driver controls the ON / OFF of the first switch 210 to the sixth switch 260 so that the DC power is converted into a three-phase power of U-phase, V-phase, and W- 200).

When an abnormality occurs in the electronic active stabilizer system, the relay device 400 controls a plurality of switch elements included in the inverter 200 to supply power to U phase, V phase, and W phase applied to the three-phase motor 100 Short-circuiting configuration. That is, a function of generating a braking force to the three-phase motor 100 by using the basic characteristics of a motor called Short Circuit Torque, which occurs when each phase in the three-phase motor 100 is short-circuited, Stability can be ensured.

Generally, when Short Circuit Torque occurs, Braking Torque is generated by using the back electromotive voltage that occurs when the motor rotates more than a certain level. Therefore, Torque is generated when constant RPM occurs. At this time, the current induced on Motor 3 basically corresponds to the rated current Current flows. Therefore, the capacity of the relays to be mounted must be equipped with a high current, high capacity relay which satisfies the motor rated current sufficiently.

In order to solve such a problem, the controller of the electronic active stabilizer system according to an embodiment of the present invention is connected to an ignition unit on one side and to the on- And a relay element 400 connected in series. The relay device 400 must be configured to short-circuit the U-phase, V-phase, and W-phase power sources by controlling the operation of the first switch 210 to the sixth switch 260. In order to perform such a function, the relay device 400 simultaneously controls the operations of the first switch 210, the second switch 220 and the third switch 230, which are High-Side switches, or the fourth switch 240 ), The fifth switch 250, and the sixth switch 260. Hereinafter, as shown in FIGS. 1 and 2, the relay device 400 is a high-side switch, The operation of the switch 210, the second switch 220 and the third switch 230 is controlled simultaneously.

1, the electronic control unit 500 receives a state of a vehicle from sensors such as a lateral acceleration sensor, a vehicle speed sensor, a steering angle sensor, and the like mounted on the vehicle. Based on the received state information of the vehicle, Or whether an abnormality has occurred in the stabilizer system. When the electronic control unit 500 determines that there is no abnormality in the vehicle or the stabilizer system, the relay device 400 is controlled to be in the OFF state, thereby blocking the power supply from the ignition 600 to the inverter 200 side.

On the contrary, when the electronic control unit 500 determines that the vehicle or the stabilizer system is abnormal, the relay device 400 is controlled to be in the ON state, and power is supplied from the ignition 600 to the inverter 200 side . Specifically, the other side of the relay device 400 is connected to the first switch 210, the second switch 220, and the third switch 230, which are high-side switches of the inverter 200, The first switch 210, the second switch 220, and the third switch 230 are turned on at the same time when the relay device 400 is turned on by the ON / And the W phase power supply are short-circuited. The braking force is generated in the three-phase motor 100 through the top lock.

Particularly, a MOSFET device can be employed as a switch constituting the inverter 200. In this case, the relay device 400 includes the first switch 210, the second switch 220, the gate of the third switch 230, And the like.

In order to prevent the operation of the relay device 400 from being influenced by the driving of the inverter pre-driver, the relay device 400 and the second switch 220 The first diode D1, the second diode D2 and the third diode D3 are disposed between the relay device 400 and the third switch 230, respectively.

Meanwhile, the control device of the active stabilizer system according to the embodiment of the present invention has been described on the assumption that the relay device 400 simultaneously controls the high-side switch. However, the relay device 400 may be a low- It is also possible to short-circuit the three-phase power source by controlling the same at the same time.

Hereinafter, a method of controlling an electronic active stabilizer system according to an embodiment of the present invention will be described with reference to FIG. 3. Hereinafter, the control method of the electronic active stabilizer system according to an embodiment of the present invention will be described in detail. The detailed description thereof is omitted. FIG. 3 is a flowchart illustrating a control method of an electronic active stabilizer system according to an embodiment of the present invention in a time-series manner.

3, a method of controlling an electronic active stabilizer system according to an exemplary embodiment of the present invention includes a first step S100 of determining whether a system abnormality exists, a second step of controlling the relay device 400 S200) and a third step (S300) of generating a braking force to the three-phase motor (100).

The first step S100 is a step in which the electronic control unit 500 determines whether there is an abnormality in the electronic active stabilizer system and the vehicle. If it is determined that there is an abnormality in the system or the vehicle in the first step S100, the electronic control unit 500 controls the relay element 400 so that the power of the ignition 600 is supplied to the inverter 200 ) Can be turned on. The third step S300 of shorting the U phase power source, the V phase power source, and the W phase power source applied to the three-phase motor 100 to generate the braking force to the three-phase motor 100 is performed through this.

The embodiments and the accompanying drawings described in the present specification are merely illustrative of some of the technical ideas included in the present invention. Therefore, it is to be understood that the embodiments disclosed herein are not intended to limit the scope of the present invention but to limit the scope of the present invention. It will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents. It should be interpreted.

100: Three-phase motor
200: Inverter
300: Inverter pre-driver
400: Relay element
500: Electronic control unit
600: Ignition
700: Sensor

Claims

An apparatus for controlling an electronic active stabilizer system for controlling roll behavior of a vehicle,
An inverter (200) electrically connected to the three-phase motor (100) for generating a rotational power of the stabilizer bar of the vehicle and converting the direct current power into three-phase alternating current power; And
Phase motor and the W phase power applied to the three-phase motor 100 by controlling a plurality of switching elements included in the inverter 200 when an abnormality occurs in the electromagnetic active stabilizer system, Element 400;
And a controller for controlling the actuator of the electronic active stabilizer system.

The method according to claim 1,
The inverter (200)
A first switch 210, a second switch 220 and a third switch 230 which are connected to positive terminals of the direct current power source, and which are arranged in parallel;
A fourth switch 240 having one side connected in series to the other side of the first switch 210, the second switch 220 and the third switch 230 and the other side connected to the negative terminal of the DC power source, A fifth switch 250 and a sixth switch 260;
Lt; / RTI >
A first node N1 between the first switch 210 and the fourth switch 240, a second node N2 between the second switch 220 and the fifth switch 250, The third node N3 between the third switch 230 and the sixth switch 260 is connected to the three-phase motor 100 to supply U phase, V phase and W phase power to the three phase motor 100, respectively and,
The relay device 400 controls the operations of the first switch 210 to the sixth switch 260 to short-circuit the U-phase, V-phase, and W-phase power supplies of the electronic active stabilizer system.

3. The method of claim 2,
The relay device 400 controls the operations of the first switch 210, the second switch 220 and the third switch 230 simultaneously or the fourth switch 240 and the fifth switch 250, And the sixth switch (260) are controlled at the same time.

3. The method of claim 2,
The first switch 210 to the sixth switch 260 are MOSFET devices,
The relay device 400 is connected to the gates of the first switch 210, the second switch 220 and the third switch 230 or the fourth switch 240, the fifth switch 250, And the gate of the sixth switch (260).

3. The method of claim 2,
At least one of the paths connecting the relay device 400 and the first switch 210 to the sixth switch 260 is connected to at least one of the first switch 210 to the sixth switch 260, And a diode for preventing a current from flowing back to the relay element (400) is disposed in the active stabilizer system.

An inverter (200) electrically connected to the three-phase motor (100) for generating a rotational power of a stabilizer bar of the vehicle and converting the direct current power into three-phase alternating current power, Phase and W-phase power applied to the three-phase motor 100 by controlling a plurality of switch elements included in the inverter 200. The relay device 400 includes: A control method of an active stabilizer system,
A first step S100 of determining whether the electronic control unit 500 is abnormal in the electronic active stabilizer system;
A second step (S200) in which the electronic control unit (500) controls the relay device (400) when it is determined that the electronic active stabilizer system is abnormal in the first step (S100); And
A third step of generating a braking force to the three-phase motor 100 by short-circuiting the U-phase power source, the V-phase power source and the W-phase power source applied to the three-phase motor 100 based on the control of the relay device 400, (S300);
And a control system for controlling the electronic active stabilizer system.