KR101764310B1 - Apparatus for controlling electric vacuum pump and method for controlling thereof - Google Patents

Abstract

The present invention is characterized by comprising: a control unit for controlling driving of a brake pedal when a brake pedal of a vehicle is pressed; A sensing unit for sensing a current vacuum level generated in the electronic vacuum pump when the brake pedal is pressed, in accordance with the control of the control unit, A first judging unit for judging whether the current vacuum level detected by the judging unit is lower than a predetermined threshold according to the preset vacuum state through the sensing unit according to the control of the control unit; And when the current vacuum state level determined by the first judgment unit is reduced to a threshold value or less according to the preset reference vacuum state, the current vacuum state level is set to a vacuum corresponding to the predetermined threshold state according to the preset reference vacuum state And a compensating unit for compensating for the level of the vacuum state to the state level and providing the compensated vacuum state level to the electronic vacuum pump, and a control method therefor.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an electronic vacuum pump control apparatus,

The present invention relates to an electronic vacuum pump control apparatus and a control method thereof.

Conventionally, an electric vacuum pump (EVP) has been provided to fill the deficient vacuum of the Master Booster, allowing the operator to brak down with sufficient pressure.

However, the conventional electronic vacuum pump has a vacuum state level varying depending on the terrain, and the driver has a limitation in braking with sufficient pressure.

For example, the vacuum level of a conventional electronic vacuum pump varies greatly at a high altitude, and the driver has a limitation in braking at a sufficient pressure.

Accordingly, in recent years, an improved electronic vacuum pump control apparatus capable of maintaining the braking stability of the vehicle by preventing the brake pedal from being hardened, by providing a compensated vacuum corresponding to the vacuum state level, Research on the control method has been continuously carried out.

An object of the present invention is to provide an electronic vacuum pump control apparatus and a control method thereof that can prevent the brake pedal from being hardened and maintain the braking stability of the vehicle.

Another object of the present invention is to provide an electronic vacuum pump control apparatus and a control method therefor which enable a driver to recognize a sufficient pressure at the same time in advance to further improve the convenience of operation and the braking stability of the vehicle.

In order to achieve the above object, the present invention provides a control apparatus for a vehicle, comprising: a control unit for controlling driving of a brake pedal when a brake pedal of a vehicle is pressed; A sensing unit for sensing a current vacuum level generated in the electronic vacuum pump when the brake pedal is pressed, in accordance with the control of the control unit, A first judging unit for judging whether the current vacuum level detected by the judging unit is lower than a predetermined threshold according to the preset vacuum state through the sensing unit according to the control of the control unit; And when the current vacuum state level determined by the first judgment unit is reduced to a threshold value or less according to the preset reference vacuum state, the current vacuum state level is set to a vacuum corresponding to the predetermined threshold state according to the preset reference vacuum state To compensate for the state level, and to provide the compensated vacuum state level to the electronic vacuum pump.

According to another aspect of the present invention, the control unit sets the range of the output signal value for the reference sensing unit, the range of the BLS (Brake Lamp Switch) output signal value for the reference brake pedal, and the MCP (Master Cylinder Pressure) Further comprising a range of at least one output signal value out of a range of a predetermined reference deceleration rate, And a second determination unit for determining, according to control of the control unit, whether the current output signal value output from the sensing unit is out of the range of the output signal value for the reference sensing unit; When the current output signal value determined by the second determination unit is out of the range of the reference signal unit output signal value, at least one output signal value among the current BLS output signal value generated when the brake pedal is pressed and the current MCP output signal value Determines whether or not the range of the output signal value of at least one of the range of the BLS output signal value for the reference brake pedal and the range of the MCP output signal value for the reference brake pedal is exceeded in accordance with the control of the control unit, Further comprising a third determination unit for determining, according to control of the control unit, whether a current deceleration rate detected by at least one of the speed sensor and the longitudinal direction G sensor is greater than a range of a reference deceleration rate ; At least one output signal value among the current BLS output signal value and the current MCP output signal value determined by the third determination unit is at least one of the range of the BLS output signal value for the reference brake pedal and the range of the MCP output signal value for the reference brake pedal And the current deceleration rate detected by at least one of the vehicle's wheel speed sensor and the longitudinal G sensor under the control of the control unit is within the range of the reference deceleration rate And a display unit for displaying the present deceleration rate of deceleration when the deceleration rate is greater than the deceleration rate.

According to another aspect of the present invention, the control unit starts controlling the current BLS output signal and the current MCP output signal, which are generated when the brake pedal is pressed, from the HIGH level to the LOW level, The OFFset period is set for the next period, and control is restarted at a time point from the HIGH level to the LOW level for the next period, so that the electronic vacuum pump is operated again.

According to still another aspect of the present invention, the apparatus further includes an identification unit that identifies an abnormal state of the current vacuum state when the current vacuum state level determined by the first determination unit is reduced to a threshold range or less according to the preset reference vacuum state .

According to another aspect of the present invention, there is provided a method of controlling a vacuum pump, the method comprising: sensing a current vacuum state level generated in an electronic vacuum pump by a sensing unit according to control of a control unit by a control unit; A first judging step of judging by the control unit whether the current vacuum state level sensed by the notice in the jam is reduced to a threshold value or less according to the preset reference vacuum state through the sensing unit; And when the current vacuum state level determined by the first judgment unit is reduced below the preset threshold range for each reference vacuum state, the compensation unit sets the current vacuum state level according to the control of the control unit Compensating for the corresponding vacuum state level, and providing the compensated vacuum state level to the electronic vacuum pump.

According to another aspect of the present invention, the second determination unit determines whether the current output signal value output from the sensing unit after the sensing step is out of the range of the output signal value for the reference sensing unit that is already set in the control unit Further performing a second determination step; When the current output signal value determined by the second determination unit is out of the range of the output signal value for the reference sensing unit, at least one output signal among the current BLS output signal value generated when the brake pedal is pressed and the current MCP output signal value It is determined whether or not the value exceeds the range of the output signal value of at least one of the range of the BLS output signal value for the reference brake pedal already set in the control section and the range of the MCP output signal value for the reference brake pedal already set in the control section 3 determination unit determines that the current deceleration rate of the vehicle detected by at least one of the wheel speed sensor and the longitudinal direction G sensor of the vehicle is greater than a range of the deceleration rate of the reference deceleration in accordance with the control of the control unit Further comprising: a third determination step of determining a third determination unit according to the control of the control unit; At least one output signal value among the current BLS output signal value and the current MCP output signal value determined by the third determination unit is at least one of the range of the BLS output signal value for the reference brake pedal and the range of the MCP output signal value for the reference brake pedal And the current deceleration rate detected by at least one of the vehicle's wheel speed sensor and the longitudinal G sensor under the control of the control unit exceeds a predetermined deceleration rate ) Ratio, a display step of displaying the current deceleration rate on the display unit is further performed.

According to still another aspect of the present invention, the third determination step starts the control at a time point when the current BLS output signal and the current MCP output signal, which are generated when the brake pedal is depressed, change from the HIGH level to the LOW level, The electronic vacuum pump is operated, the OFFset period is set for the next cycle, and control is resumed at a time point from the HIGH level to the LOW level for the next cycle to control the electronic vacuum pump again by operating the control unit .

According to another aspect of the present invention, when the current vacuum state level determined by the first determination unit after the first determination step is reduced to a threshold range or less according to the preset reference vacuum state, the abnormal state of the current vacuum state is identified And further performs an identifying step for identifying the parts.

According to the electronic vacuum pump control apparatus and control method of the present invention as described above, the following effects can be obtained.

First, it is possible to prevent the brake pedal from being hardened, and the braking stability of the vehicle can be maintained.

Second, the driver is able to perceive sufficient pressure at the same time, which has the effect of further enhancing the driving comfort and the braking stability of the vehicle.

1 is a block diagram showing an electronic vacuum pump control apparatus according to a first embodiment of the present invention.
2 is a block diagram illustrating an electronic vacuum pump control apparatus according to a first embodiment of the present invention.
FIG. 3 is a graph illustrating a process of compensating for a deficient vacuum state level by binarizing an EVP entry threshold range for each highland through the compensation unit shown in FIG. 2. FIG.
FIG. 4 is a waveform diagram for illustrating a process of compensating a deficient vacuum state level to a release threshold range through the compensation unit shown in FIG. 2. FIG.
FIG. 5 is a waveform diagram illustrating a process of compensating for a deficient vacuum state level by binarizing an EVP entry threshold range for each property through the compensation unit shown in FIG. 2. FIG.
6 is a flowchart showing a method of controlling an electronic vacuum pump according to the first embodiment of the present invention.
7 is a flowchart showing an electronic vacuum pump control method according to the first embodiment of the present invention.
8 is a block diagram showing an electronic vacuum pump control apparatus according to a second embodiment of the present invention.
9 is a flowchart showing a method of controlling an electronic vacuum pump according to a second embodiment of the present invention.
10 is a flowchart illustrating an electronic vacuum pump control method according to a second embodiment of the present invention.
11 is a block diagram showing an electronic vacuum pump control apparatus according to a third embodiment of the present invention.
12 is a waveform diagram showing a process of controlling a current BLS output signal, a current MCP output signal, and an operation of an electronic vacuum pump, which are generated when the brake pedal is pressed through the control unit shown in FIG.
13 is a waveform diagram illustrating a process of operating an electronic vacuum pump to compensate for an insufficient vacuum state level when the current BLS output signal and the current MCP output signal are turned off from the ON state through the control unit and the compensation unit shown in FIG. .
FIG. 14 is a waveform diagram for illustrating a process of measuring the current deceleration rate to the release threshold range through the control unit shown in FIG. 11. FIG.
Fig. 15 is a waveform diagram showing a process of confirming the current deceleration rate of the driver through the control unit, the compensation unit, and the display unit shown in Fig. 11, and compensating for the insufficient vacuum state level by operating the electronic vacuum pump. .
16 is a flowchart showing an electronic vacuum pump control method according to the third embodiment of the present invention.
17 is a flowchart illustrating an electronic vacuum pump control method according to a third embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

≪ Embodiment 1 >

FIG. 1 is a block diagram showing an electronic vacuum pump control apparatus according to a first embodiment of the present invention, and FIG. 2 is a block diagram showing an electronic vacuum pump control apparatus according to a first embodiment of the present invention.

FIG. 3 is a graph illustrating a process of compensating for a deficient vacuum state level by binarizing an EVP entry threshold range for each highland through the compensation unit shown in FIG. 2. FIG. Is compensated up to the release threshold range.

FIG. 5 is a waveform diagram illustrating a process of compensating for a deficient vacuum state level by binarizing an EVP entry threshold range for each property through the compensation unit shown in FIG. 2. FIG.

1 and 2, an electronic vacuum pump control apparatus 100 according to a first embodiment of the present invention includes a control unit 102, a sensing unit 104, a first determination unit 106, a compensation unit 108).

The control unit 102 controls the brake pedal 10 to drive the brake pedal 10 when the brake pedal 10 is pressed against the vehicle and the sensing unit 104 drives the electronic vacuum pump 30 when the brake pedal 10 is pressed. The control unit 102 controls the level of the current vacuum state generated by the control unit 102 in accordance with the control.

The first judging unit 106 judges whether the current vacuum level detected at the stop by the sensing unit 104 is lower than a preset threshold range according to the preset vacuum state under the control of the control unit 102 / RTI >

The compensation unit 108 compensates for the current vacuum state level under the control of the control unit 102 when the current vacuum state level determined by the first determination unit 106 is reduced to a threshold range or less according to the preset reference vacuum state Compensates the vacuum state level to a vacuum state level corresponding to the threshold range set for each reference vacuum state, and supplies the compensated vacuum state level to the electronic vacuum pump 30. [

2 to 5, the compensation unit 108 refers to the current vacuum state level determined by the first determination unit 106, and controls the EVP (electronic vacuum When the current vacuum state level determined by the first judgment unit 106 is reduced below the entry threshold range which is the threshold range according to the preset reference vacuum state when the electronic vacuum pump 30 is driven by binarizing the entrance threshold range , The current vacuum state level is adjusted to the vacuum state level corresponding to the preset threshold state of each vacuum state to compensate the insufficient vacuum state level to the release threshold range which is the threshold state of each reference state of vacuum already set, It can be provided to turn off the operation of the electronic vacuum pump 30 under the control of the control unit 102. [

A method of controlling the electronic vacuum pump using the electronic vacuum pump control apparatus 100 according to the first embodiment of the present invention will now be described with reference to FIGS. 6 and 7. FIG.

FIG. 6 is a flowchart illustrating an electronic vacuum pump control method according to the first embodiment of the present invention, and FIG. 7 is a flowchart illustrating an electronic vacuum pump control method according to the first embodiment of the present invention.

6 and 7, the electronic vacuum pump control method 600, 700 according to the first embodiment of the present invention includes a sensing step S602, a first determination step S604, S704, a compensation step S606, .

First, in the sensing step S602, when the brake pedal (10 in Fig. 1 and Fig. 2) is pressed, the current vacuum state level generated in the electronic vacuum pump (30 in Fig. 1 and Fig. 2) (104 in FIG. 2) according to the control of the controller (102 in FIG. 2).

Thereafter, the first determination step (S604, S704) determines whether the current vacuum level detected at the stop by the sensing unit (104 in FIG. 2) is reduced below the preset threshold range for each reference vacuum state, 2) of FIG. 2 according to the control of FIG.

For example, in the first determination step S704, it is determined whether the current vacuum state level detected at the stop by the detection unit (104 in FIG. 2) is reduced below the entry threshold range, It is possible to perform the step of determining by the first determination unit 106 (FIG. 2) according to the control of the control unit (102 of FIG. 2).

Lastly, the compensation step S606 is performed when the current vacuum state level judged by the first judgment unit 106 (see FIG. 2) is reduced below the preset threshold range for each reference vacuum state, (108 in FIG. 2) to compensate the current vacuum state level to a vacuum state level corresponding to the preset threshold state according to the preset reference vacuum state, and compensate the vacuum state level to an electromagnetic vacuum pump 2 < / RTI > to 30).

For example, in the compensating step S606, the compensation unit 108 in FIG. 2 refers to the current vacuum state level determined in the first determination unit 106 in FIG. 2, and under the control of the control unit 102 in FIG. 2, When the electronic vacuum pump (30 in Figs. 1 and 2) is driven by binarizing the entry threshold range of the EVP (electronic vacuum pump) by each EVP (electronic vacuum pump), the current vacuum level determined by the first judgment unit (106 in Fig. 2) If the current vacuum state level is reduced to the vacuum state level corresponding to the preset reference vacuum state and the deficient vacuum state level is set to the predetermined threshold state according to the reference vacuum state (Fig. 2) so as to turn off the operation of the electronic vacuum pump (30 in Figs. 1 and 2) under the control of the control section (102 in Fig. 2) when the deficient vacuum state level is compensated Lt; RTI ID = 0.0 > 108) One can.

The electronic vacuum pump control apparatus 100 according to the first embodiment of the present invention and the control methods 600 and 700 thereof include a control unit 102, a sensing unit 104, a first determination unit 106, (108).

Therefore, the electronic vacuum pump control apparatus 100 and the control methods 600 and 700 according to the first embodiment of the present invention can brak down the brake pedal with sufficient pressure when the driver brakes, So that the braking stability of the vehicle can be maintained.

≪ Embodiment 2 >

8 is a block diagram showing an electronic vacuum pump control apparatus according to a second embodiment of the present invention.

Referring to FIG. 8, an electronic vacuum pump control apparatus 800 according to a second embodiment of the present invention includes a control unit 102, a sensing unit (not shown) 104, a first determination unit 106, and a compensation unit 108.

The function of each component corresponding to the electronic vacuum pump control apparatus 800 according to the second embodiment of the present invention and the organic connection relation therebetween are the same as those of the electronic vacuum pump control apparatus according to the first embodiment 100), and the organic connection relation between them, each of which will be omitted below.

Here, the electronic vacuum pump control apparatus 800 according to the second embodiment of the present invention further includes an identification unit 810.

That is, the identification unit 810 identifies an abnormal state of the current vacuum state when the current vacuum state level judged by the first judgment unit (106 of FIG. 1) is reduced below the preset threshold range of the predetermined vacuum state .

At this time, although not shown, the identification unit 810 may detect an abnormal state of the current vacuum state by at least one of the voice operation of the vehicle speaker (not shown) provided on one side of the vehicle and the light emitting operation of the light emitting member May be provided.

A method of controlling the electronic vacuum pump using the electronic vacuum pump control apparatus 800 according to the second embodiment of the present invention will now be described with reference to FIGS. 9 and 10. FIG.

FIG. 9 is a flowchart illustrating an electronic vacuum pump control method according to a second embodiment of the present invention, and FIG. 10 is a flowchart illustrating an electronic vacuum pump control method according to a second embodiment of the present invention.

9 and 10, the electronic vacuum pump control method 900, 1000 according to the second embodiment of the present invention includes a sensing step S602, a first determining step S604, S704, an identifying step S905, S1005), and performs the compensation step S606.

8) of the brake pedal (10 in Fig. 8) is pressed, the current vacuum level level generated in the electronic vacuum pump (30 in Fig. 8) (104 in FIG. 8) according to the control of the control unit.

Thereafter, the first determination step (S604, S704) determines whether the current vacuum state level sensed per notice by the sensing unit (104 in FIG. 8) is reduced below the preset threshold range for each reference vacuum state, 8) of FIG. 8 according to the control of the first determination unit (102 of FIG. 8).

For example, in the first determination step S704, it is determined whether the current vacuum state level detected at the stop by the sensing unit (104 in FIG. 8) is reduced below the entry threshold range, It is possible to perform the step of determining in the first determination unit (106 in Fig. 8) according to the control of the control unit (102 in Fig. 8).

Subsequently, in the identification step (S905, S1005), when the current vacuum state level judged by the first judgment unit (106 in Fig. 8) is reduced below the preset threshold range for each reference vacuum state, (810 in Fig. 8).

At this time, although the identifying step (S905, S1005) does not show the identification part (810 of FIG. 8), at least one of the voice operation of the vehicle speaker (not shown) and the light emitting operation Operation to provide an indication of an abnormal state of the current vacuum state.

The compensating step S606 is performed when the current vacuum state level judged by the first judging unit (106 in Fig. 8) is reduced below the preset threshold range for each reference vacuum state, (108 in FIG. 8), the current vacuum state level is compensated to a vacuum state level corresponding to the predetermined threshold state according to the preset reference vacuum state, and the compensated vacuum state level is supplied to the electronic vacuum pump (30 in FIG. 8) .

For example, in the compensation step S606, the compensation unit 108 in FIG. 8 refers to the current vacuum state level determined in the first determination unit 106 in FIG. 8, and, under the control of the control unit 102 in FIG. 8, When the current vacuum state level judged by the first judgment unit (106 in FIG. 8) is lower than the preset reference vacuum state If the current vacuum level is set to a vacuum level corresponding to the preset reference vacuum state, the deficient vacuum level is set to the threshold value of the reference vacuum state (108 in Fig. 8) to turn off the operation of the electronic vacuum pump (30 in Fig. 8) in accordance with the control of the control portion (102 in Fig. 8) when the deficient vacuum level is compensated Be a step .

The electronic vacuum pump control apparatus 800 according to the second embodiment of the present invention and the control methods 900 and 1000 thereof include a control unit 102, a sensing unit 104, a first determination unit 106, A part 108, and an identification part 810. [

Therefore, the electronic vacuum pump control apparatus 800 and the control methods 900 and 1000 according to the second embodiment of the present invention can braking the brake pedal with sufficient pressure when the driver brakes, So that the braking stability of the vehicle can be maintained.

The electronic vacuum pump control apparatus 800 and the control methods 900 and 1000 according to the second embodiment of the present invention include the identification unit 810 so that the current vacuum corresponding to the electronic vacuum pump 30 It is possible to recognize the abnormal state of the state, so that the driver can sufficiently recognize the sufficient pressure at the same time, thereby making it possible to further maintain the operational convenience and the braking stability of the vehicle.

≪ Third Embodiment >

FIG. 11 is a block diagram illustrating an electronic vacuum pump control apparatus according to a third embodiment of the present invention. FIG. 12 is a block diagram of the electronic vacuum pump control apparatus according to the third embodiment of the present invention. FIG. 3 is a waveform diagram illustrating a process of controlling the operation of the MCP output signal and the electronic vacuum pump of FIG.

13 is a waveform diagram illustrating a process of operating an electronic vacuum pump to compensate for an insufficient vacuum state level when the current BLS output signal and the current MCP output signal are turned off from the ON state through the control unit and the compensation unit shown in FIG. .

FIG. 14 is a waveform diagram for illustrating a process of measuring the current deceleration rate to the release threshold range through the control unit shown in FIG. 11. FIG.

Fig. 15 is a waveform diagram showing a process of confirming the current deceleration rate of the driver through the control unit, the compensation unit, and the display unit shown in Fig. 11, and compensating for the insufficient vacuum state level by operating the electronic vacuum pump. .

11, the control unit 1102 and the sensing unit 104, the first determination unit 106, and the compensation unit 1108 corresponding to the electronic vacuum pump control apparatus 1100 according to the third embodiment of the present invention, Is provided in the same manner as the control unit 102 and the sensing unit 104 and the first determination unit 106 and the compensation unit 108 corresponding to the electronic vacuum pump control apparatus 100 according to the first embodiment.

The function of each component corresponding to the electronic vacuum pump control apparatus 1100 according to the third embodiment of the present invention and the organic connection relation therebetween are the same as those of the electronic vacuum pump control apparatus 1100 according to the first embodiment 100), and the organic connection relation between them, each of which will be omitted below.

The control unit 1102 of the electronic vacuum pump control apparatus 1100 according to the third embodiment of the present invention controls the range of the output signal value for the reference sensing unit and the output signal value of the BLS (Brake Lamp Switch) for the reference brake pedal And a range of an output signal value of a master cylinder pressure (MCP) output signal value for a reference brake pedal, and includes a range of a predetermined reference deceleration rate.

The control unit 1102 of the electronic vacuum pump control apparatus 1100 according to the third embodiment of the present invention includes a second determination unit 1107, a third determination unit 1109, and a display unit 1111.

The second determination unit 1107 is provided to determine whether the current output signal value output from the sensing unit 104 is out of the range of the output value for the reference sensing unit under the control of the control unit 104. [

When the current output signal value determined by the second determination unit 1107 is out of the range of the output value of the reference sensing unit, the third determination unit 1109 determines whether the current BLS output, which is generated when the brake pedal 10 is pressed, Whether the output signal value of at least one of the signal value and the current MCP output signal value is out of the range of the output signal value of the range of the BLS output signal value for the reference brake pedal and the range of the MCP output signal value for the reference brake pedal, (102). ≪ / RTI >

The third determination unit 1109 determines the current deceleration rate of the vehicle based on at least one of the vehicle speed sensor 50 and the longitudinal direction G sensor 70 under the control of the controller 1102 Is determined to be greater than the range of the reference deceleration rate under the control of the control unit 1102. [

Here, as shown in FIGS. 11 and 12, the control unit 102 starts the control when the current BLS output signal and the current MCP output signal, which are generated when the brake pedal is pressed, change from the HIGH level to the LOW level The electronic vacuum pump 30 is operated for a predetermined period T1 and the OFFset period is set during the next period T2 and the control is restarted at a time point from the HIGH level to the LOW level for the next period T3, And may be provided to operate the vacuum pump 30 again.

11 and 13, when the current BLS output signal and the current MCP output signal are turned off on the basis of the control of the controller 1102, the compensation unit 1108 performs control of the control unit 1102 The electronic vacuum pump 30 may be operated in accordance with the amount of the vacuum state to be compensated for.

11, 14, and 15, the display unit 1111 receives the output signal value of at least one of the current BLS output signal value and the current MCP output signal value determined by the third determination unit 1109, The range of the output signal value of at least one of the range of the BLS output signal value for the pedal and the range of the MCP output signal value for the reference brake pedal is exceeded and the wheel speed sensor 50 of the vehicle and the longitudinal direction G sensor 70 is provided to indicate the current deceleration rate of deceleration if the current deceleration rate of deceleration detected by at least one of the G sensors 70 is greater than the range of the reference deceleration rate .

At this time, the driver confirms the current deceleration rate displayed on the display unit 1111, and the compensation unit 1208 operates the electronic vacuum pump 30 according to the control of the control unit 1102 by the driver, The vacuum state level can be further compensated for.

A method of controlling the electronic vacuum pump using the electronic vacuum pump control apparatus 1100 according to the third embodiment of the present invention will now be described with reference to FIGS. 16 and 17. FIG.

FIG. 16 is a flowchart showing an electronic vacuum pump control method according to a third embodiment of the present invention, and FIG. 17 is a flowchart showing an electronic vacuum pump control method according to a third embodiment of the present invention.

16 and 17, the electronic vacuum pump control method 1600 and 1700 according to the third embodiment of the present invention includes a sensing step S602, a first determining step S604 and S704, a second determining step (S1605, S1705), a third determination step (S1607, S1707), a display step (S1609), and a compensation step (S1611).

11), when the brake pedal (10 in Fig. 11) is pressed, the current vacuum level level generated in the electronic vacuum pump (30 in Fig. 11) (104 in FIG. 11) according to the control of the controller.

Thereafter, the first determination step (S604, S704) determines whether the current vacuum level detected at the stop by the sensing unit (104 in FIG. 11) is reduced below the preset threshold range for each reference vacuum state, 11) in accordance with the control of the first determination unit (1102 in FIG. 11).

For example, in the first determination step S704, it is determined whether the current vacuum state level detected at the stop by the sensing unit (104 in FIG. 11) is reduced below the entry threshold range, The control unit (1102 of FIG. 11) controls the first determination unit (106 of FIG. 11) to perform the determination.

Lastly, the compensating step S1611 is performed when the current vacuum state level judged by the first judging unit (106 of Fig. 11) is reduced below the preset threshold range for each reference vacuum state, (1108 in FIG. 11) to compensate the current vacuum state level to a vacuum state level corresponding to the predetermined threshold state according to the preset reference vacuum state, and compensate the vacuum state level to an electromagnetic vacuum pump ). ≪ / RTI >

For example, in the compensating step S1611, the compensating unit 108 in FIG. 11 refers to the current vacuum state level determined in the first determining unit 106 in FIG. 11, 11) by driving the electronic vacuum pump (30 in Fig. 11) by binarizing the entrance threshold range of the EVP (electronic vacuum pump) by a predetermined value, the current vacuum state level judged by the first judgment unit (106 in Fig. 11) If the current vacuum level is set to a vacuum level corresponding to the preset reference vacuum state, the deficient vacuum level is set to the threshold value of the reference vacuum state 11) of the electronic vacuum pump (110 in Fig. 11) to turn off the operation of the electronic vacuum pump (30 in Fig. 11) under the control of the control unit (1102 in Fig. 11) when the deficient vacuum level is compensated Step day A.

On the other hand, in the second determination step (S1605, S1705), when the current output signal value output from the sensing unit (104 in Fig. 11) is out of the range of the output signal value for the reference sensing unit already set in the control unit (1107 of FIG. 11) in accordance with the control of the control unit 1102 (FIG. 11).

Thereafter, the third determination step (S1607, S1707) determines whether the current output signal value determined by the second determination unit (1107 in Fig. 11) is out of the range of the output value of the reference sensing unit output signal, ) And the current MCP output signal value are compared with the range of the BLS output signal value for the reference brake pedal already set in the control section (1102 in Fig. 11) and the control section 11) in accordance with the control of the control section (1102 in FIG. 11) to determine whether the range of the output signal value of at least one of the range of the MCP output signal value for the reference brake pedal that has already been set in step 1102 ) And determines the current deceleration rate (i.e., the current deceleration rate) detected in at least one of the wheel speed sensor (50 in Fig. 11) and the longitudinal direction G sensor (70 in Fig. 11) deceleration ratio is the reference deceleration ratio It performs the step of determining from the third determining unit (1109 in FIG. 11) under the control of the controller (1102 of Fig. 11) is greater than the range.

For example, the third determination step (S1707) may perform the third-first determination step (S1707a) and the third-second determination step (S1707b).

If the current output signal value determined by the second determination unit (1107 of FIG. 11) is out of the range of the output value of the reference sensing unit, the 3-1 decision step (S1707a) The output signal value of at least one of the current BLS output signal value and the current MCP output signal value generated when the control signal (1102 of FIG. 11) is generated is compared with the range of the BLS output signal value for the reference brake pedal (1109 in FIG. 11) according to the control of the control unit (1102 in FIG. 11) to determine whether or not the range of the output signal value of at least one of the range of the MCP output signal value for the reference brake pedal . ≪ / RTI >

Thereafter, the third-second judgment step (S1707b) is performed in at least one of the wheel speed sensor (50 in Fig. 11) and the longitudinal G sensor (70 in Fig. 11) of the vehicle under the control of the control section (1109 in FIG. 11) according to the control of the control unit (1102 in FIG. 11) to determine whether the detected current deceleration rate is larger than the range of the reference deceleration rate Can be performed.

At this time, the third determination step (S1607, S1707) starts the control at the time when the current BLS output signal and the current MCP output signal, which are generated when the brake pedal (10 of FIG. 11) 12), and sets the OFFset period for the next period (T2 in Fig. 12). During the next period (T3 in Fig. 12), the HIGH level (FIG. 11) 1102 so as to restart the control at the point of time when the temperature of the electronic vacuum pump (LOW level) is changed to the LOW level.

Thereafter, in the display step S1609, at least one output signal value out of the current BLS output signal value and the current MCP output signal value determined in the third determination unit 1109 in FIG. 11 is compared with the value of the BLS output signal value for the reference brake pedal 11 and the range of the MCP output signal value for the reference brake pedal is out of the range of at least one of the output signal values of the range and the reference brake pedal, If the current deceleration rate of deceleration sensed in at least one of the sensors (70 in FIG. 11) is greater than the range of deceleration rates already set in the control section (1102 in FIG. 11) And a step of displaying the deceleration rate on the display unit (1111 in Fig. 11) is performed.

Finally, in the compensation step S1611, when the current BLS output signal and the current MCP output signal are turned off on the basis of the control of the control section 1102 in Fig. 11, the control section (1102 of Fig. 11) The vacuum pump (30 in Fig. 11) is operated to perform the step of providing the compensated vacuum state level to be compensated in the compensating portion (1108 in Fig. 11).

On the other hand, in the compensation step S1611, the driver confirms the current deceleration rate of the deceleration displayed on the display unit (1111 in Fig. 11), and in accordance with the control by the driver (1102 in Fig. 11) (30 in Fig. 11) is operated to provide the compensated vacuum state level to be compensated in the compensator (1108 in Fig. 11).

The electronic vacuum pump control apparatus 1100 and the control methods 1600 and 1700 according to the third embodiment of the present invention may include a control unit 1102, a sensing unit 104, a first determination unit 106, 2 judgment unit 1107, a compensation unit 1108, a third judgment unit 1109 and a display unit 1111. [

Therefore, the electronic vacuum pump control apparatus 1100 and the control methods 1600 and 1700 according to the third embodiment of the present invention can further increase the compensation rate of the vacuum compensated by the electronic vacuum pump 30, It is possible to braking with sufficient pressure.

Accordingly, the electronic vacuum pump control apparatus 1100 and the control methods 1600 and 1700 according to the third embodiment of the present invention can further prevent the brake pedal from becoming stiff, thereby further improving the braking stability of the vehicle .

It will be understood by those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. Therefore, it should be understood that the above-described embodiments are to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than the foregoing description, It is intended that all changes and modifications derived from the equivalent concept be included within the scope of the present invention.

Claims (8)

A control unit for controlling the brake pedal to be driven when the brake pedal of the vehicle is pressed;
A sensing unit for sensing a current vacuum state level generated by the electronic vacuum pump when the brake pedal is pressed in accordance with the control of the control unit for each of the obstacles to the ground;
A first judging unit for judging whether the current vacuum state level detected by the detection unit is lowered below a predetermined threshold value according to the preset vacuum state, according to the control of the control unit; And
When the electronic vacuum pump is driven by referring to the current vacuum state level determined by the first judgment unit and by binarizing the EVP entry threshold range according to the control of the control unit, When the level of the vacuum state is lowered below the entry threshold range, which is a threshold range per the reference vacuum state, the current vacuum state level is set to a vacuum state level corresponding to the threshold value of the reference vacuum state, And compensating means for compensating for the state of the vacuum pump up to the threshold range of the threshold for each state and turning off the operation of the electromagnetic vacuum pump under the control of the control unit when the deficient vacuum state level is compensated.
A control section for controlling the brake pedal to be driven when the brake pedal of the vehicle is pressed, and including a range of a predetermined reference deceleration rate;
A sensing unit for sensing a current vacuum state level generated by the electronic vacuum pump when the brake pedal is pressed in accordance with the control of the control unit for each of the obstacles to the ground;
A first judging unit for judging whether the current vacuum state level detected by the detection unit is lowered below a predetermined threshold value according to the preset vacuum state, according to the control of the control unit; And
Wherein when the current vacuum state level determined by the first determination unit is reduced to a threshold value or less according to the predetermined reference vacuum state, the control unit causes the current vacuum state level to be divided into a threshold range And a compensation unit for compensating for the vacuum state level corresponding to the vacuum state level and providing the compensated vacuum state level to the electronic vacuum pump,
Wherein the control unit determines whether a current deceleration rate of the vehicle detected by at least one of the wheel speed sensor and the longitudinal direction G sensor of the vehicle is greater than a predetermined deceleration rate of the reference deceleration rate And a third judgment unit for judging according to the control of the control unit;
And a display unit for displaying a current deceleration rate when the detected current deceleration rate is greater than a range of the reference deceleration rate;
Wherein the compensation unit comprises:
And controls the electronic vacuum pump based on a current deceleration ratio displayed on the display unit to compensate for an insufficient vacuum level.
A control unit for controlling the brake pedal to be driven when the brake pedal of the vehicle is pressed;
A sensing unit for sensing a current vacuum state level generated by the electronic vacuum pump when the brake pedal is pressed in accordance with the control of the control unit for each of the obstacles to the ground;
A first judging unit for judging whether the current vacuum state level detected by the detection unit is lowered below a predetermined threshold value according to the preset vacuum state, according to the control of the control unit; And
Wherein when the current vacuum state level determined by the first determination unit is reduced to a threshold value or less according to the predetermined reference vacuum state, the control unit causes the current vacuum state level to be divided into a threshold range And a compensation unit for compensating for the vacuum state level corresponding to the vacuum state level and providing the compensated vacuum state level to the electronic vacuum pump,
Wherein,
The controller starts the control at a time point when the current BLS output signal and the current MCP output signal, which are generated when the brake pedal is pressed and becomes the LOW level, changes from the HIGH level to the OFF state, And restarts the control at a time point from the HIGH level to the LOW level for the next period to operate the electronic vacuum pump again;
Wherein the compensation unit comprises:
An electronic vacuum pump control unit for controlling the electronic vacuum pump according to the control of the control unit to compensate for an insufficient vacuum state level when the current BLS output signal and the current MCP output signal are turned off under the control of the controller, Device.
The method according to claim 1,
Further comprising an identification unit that identifies an abnormal state of the current vacuum state when the current vacuum state level determined by the first determination unit is reduced to a threshold range or less according to the preset reference vacuum state.
A sensing step of sensing a current vacuum state level generated in an electronic vacuum pump by a sensing unit according to the control of the control unit by the control unit when the brake pedal of the vehicle is pressed;
A first judging step of judging by the control unit whether the current vacuum state level sensed by the notice in the jam is reduced to a threshold value or less according to the preset reference vacuum state through the sensing unit; And
When the electronic vacuum pump is driven by referring to the current vacuum state level determined by the first judgment unit and by binarizing the EVP entry threshold range according to the control of the control unit, When the level of the vacuum state is lowered below the entry threshold range, which is a threshold range per the reference vacuum state, the current vacuum state level is set to a vacuum state level corresponding to the threshold value of the reference vacuum state, And a compensating step of compensating in the compensating unit up to a range of the threshold value of the state-dependent releasing threshold, and turning off the operation of the electronic vacuum pump in the compensation unit under the control of the control unit when the deficient vacuum state level is compensated Pump control method.
A sensing step of sensing a current vacuum state level generated in an electronic vacuum pump by a sensing unit according to the control of the control unit by the control unit when the brake pedal of the vehicle is pressed;
A first judging step of judging by the control unit whether the current vacuum state level sensed by the notice in the jam is reduced to a threshold value or less according to the preset reference vacuum state through the sensing unit; And
Wherein when the current vacuum state level determined by the first determination unit is reduced to a threshold value or less according to the preset reference vacuum state, the compensation unit sets the current vacuum state level to the predetermined reference vacuum state Compensating for a vacuum state level corresponding to a distinct threshold range and providing the compensated vacuum state level to the electronic vacuum pump,
Wherein a current deceleration rate detected by at least one of the wheel speed sensor and the longitudinal G sensor of the vehicle is greater than a deceleration rate of the reference deceleration rate already set in the controller according to the control of the controller And a third determination step of determining, by a third determination unit, the control based on the control of the control unit;
And a display step of displaying a current deceleration rate on the display unit when the detected current deceleration rate is larger than the range of the reference deceleration rate;
Wherein the compensating step comprises:
And operating the electronic vacuum pump in the compensating unit based on a current deceleration rate displayed on the display unit to compensate for a deficient vacuum state level.
A sensing step of sensing a current vacuum state level generated in an electronic vacuum pump by a sensing unit according to the control of the control unit by the control unit when the brake pedal of the vehicle is pressed;
A first judging step of judging by the control unit whether the current vacuum state level sensed by the notice in the jam is reduced to a threshold value or less according to the preset reference vacuum state through the sensing unit; And
Wherein when the current vacuum state level determined by the first determination unit is reduced to a threshold value or less according to the preset reference vacuum state, the compensation unit sets the current vacuum state level to the predetermined reference vacuum state Compensating for a vacuum state level corresponding to a distinct threshold range and providing the compensated vacuum state level to the electronic vacuum pump,
The control unit starts the control at a time point when the current BLS output signal and the current MCP output signal, which are generated when the brake pedal is pressed by the control unit, are changed from a HIGH level to a LOW level to operate the electronic vacuum pump for a predetermined period, And a third determination step of restarting the control at a time point at which the HIGH level is changed to the LOW level during the next period to restart the electronic vacuum pump;
Wherein the compensating step comprises:
Wherein when the current BLS output signal and the current MCP output signal are turned off on the basis of the control of the controller, the compensation unit operates the electronic vacuum pump under the control of the control unit to compensate for the insufficient vacuum state level Electronic vacuum pump control method.
6. The method of claim 5,
After the first determination step,
And an identification step of identifying an abnormality in a current vacuum state in the identification unit when the current vacuum state level determined by the first determination unit is reduced to a threshold range or less according to the predetermined reference vacuum state, Control method.

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