CN106218625B - Motorized vacuum pump control system and method - Google Patents
Motorized vacuum pump control system and method Download PDFInfo
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- CN106218625B CN106218625B CN201610714983.4A CN201610714983A CN106218625B CN 106218625 B CN106218625 B CN 106218625B CN 201610714983 A CN201610714983 A CN 201610714983A CN 106218625 B CN106218625 B CN 106218625B
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- vacuum pump
- signal
- vacuum
- mode
- battery voltage
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/66—Electrical control in fluid-pressure brake systems
- B60T13/72—Electrical control in fluid-pressure brake systems in vacuum systems or vacuum booster units
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
The present invention relates to vacuum pump control technology fields, and in particular to Motorized vacuum pump control system and method.Acquire key ON gear switch signal, battery voltage signal and vacuum pump pressure signal; according to key ON gear switch signal, battery voltage signal and vacuum pump pressure signal, control vacuum pump works in any one in fixed frequency operating mode, voltage protection scheme, normal mode of operation and current protection mode.Setting fixed frequency operating mode, normal mode of operation, current protection mode and voltage protection scheme these four operating modes select the operating mode of vacuum pump according to key ON gear switch signal, battery voltage signal and vacuum pump pressure signal.Enable vacuum pump to ensure and maintain basic brake boost pressure, while reducing the Energy in use of electric vacuum pump, and by overvoltage protection.
Description
Technical field
The present invention relates to vacuum pump control technology fields, and in particular to Motorized vacuum pump control system and method.
Background technique
On New-energy electric vehicle, electric vacuum pump extracts vacuum, so that the working method of brake vacuum pressure is maintained,
The validity of one of braking system safety precautions approach as electric car, braking system control is particularly important.
New-energy automobile only controls relay at present, to complete electric vacuum pump open and close, and seldom considers voltage and electric current
Etc. influence of the factors to the energy saving and reliability of the electric vacuum pump course of work, cause electric vacuum pump reliability low, and save
Energy property is poor.
Summary of the invention
In order to solve the above technical problems, the present invention provides a kind of high reliablity, good energy saving property, and can control Motorized vacuum
Pump the Motorized vacuum pump control system opened and closed and method.
For a kind of Motorized vacuum pump control system of the present invention, technical solution is, including
Power supply system: for providing power supply for whole system；
Analog line driver: for inputting battery voltage signal to multi-channel digital and analogue concentrator, and central processing system is received
The control signal of transmission drives vacuum pump work according to the specified operating mode of control signal；
Signal acquiring system: for acquiring the brake vacuum pressure signal of vacuum pump and the key ON gear switch letter of vehicle
Number, and it is input to multi-channel digital and analogue concentrator；
Multi-channel digital and analogue concentrator: for receiving the brake vacuum pressure signal and key of battery voltage signal, vacuum pump
ON gear switch signal, and it is sent to central processing system；
Central processing system: for the brake vacuum pressure signal and key ON according to battery voltage signal, vacuum pump
The operating mode of gear switch signal behavior vacuum pump, and the operating mode is sent to power drive in a manner of controlling signal
Device.
It further, further include fault processing system, the fault processing system is for receiving central processing system transmission
Vacuum pump failure alarm signal, and the vacuum pump failure alarm signal is exported to the instrument of vehicle or CAN network.
Further, including signal condition system, the signal condition system are used to receive signal acquiring system transmission
Brake vacuum pressure signal and key ON gear switch signal, carried out brake vacuum pressure signal and key ON gear switch signal
Multi-channel digital and analogue concentrator is sent to after filter.
It further, including power supply voltage-stablizer, is power drive after voltage for exporting to power supply system carries out pressure stabilizing
Device and central processing system power supply.
Motorized vacuum method for controlling pump a kind of for the present invention, technical solution are as follows:
Key ON gear switch signal, battery voltage signal and vacuum pump pressure signal are acquired, according to key ON gear switch
Signal, battery voltage signal and vacuum pump pressure signal, control vacuum pump work in fixed frequency operating mode, voltage protection
Any one in mode, normal mode of operation and current protection mode.
Further, when the key ON gear switch signal is effective, and vacuum pump pressure signal multi collect is abnormal,
Into the fixed frequency operating mode；
When the vacuum pump pressure signal acquisition is normal, and battery voltage is greater than VmaxWhen, into the voltage protection mould
Formula；
When the vacuum pump pressure signal acquisition is normal, and battery voltage is in [Vmin, Vmax] between when, into described
Normal mode of operation；
When the vacuum pump pressure signal acquisition is normal, and battery voltage is in [Voff, Vmin) between when, into described
Current protection mode.
Further, vacuum pump is in appointing in the voltage protection scheme, normal mode of operation and current protection mode
When anticipating a kind of, the start and stop of vacuum pump are controlled according to vacuum pump pressure signal；
When vacuum pump pressure is not less than brake vacuum upper pressure limit threshold values, control power drive actuator is closed, and close
Close vacuum pump；
When vacuum pump pressure is less than brake vacuum low pressure limit threshold values, power drive actuator is controlled, and open vacuum
Pump；
When vacuum pump pressure is less than brake vacuum upper pressure limit threshold values, and is not less than brake vacuum low pressure limit threshold values,
If vacuum pump is not opened or vacuum pump has turned on, and opens time-out, then control power drive actuator is closed, and close vacuum
Pump；If vacuum pump has turned on, but opens and have not timed out, then continue to control power drive actuator, and open vacuum pump.
Further, when vacuum pump is in the fixed frequency operating mode, vacuum pump is controlled according to fixed frequency
It opens and closes:
When the unlatching timer expired of vacuum pump, vacuum pump closing timer is reset and is started timing, if vacuum pump
Timer expired is closed, then the unlatching timer of vacuum pump is reset and started timing, and repeats vacuum pump and opens timing
Whether time-out judges device；If vacuum pump is closed timer and had not timed out, control power drive actuator is closed, and close vacuum
Pump；
When the unlatching timer of vacuum pump has not timed out, power drive actuator is controlled, and open vacuum pump.
Further, when battery voltage is lower than VoffWhen, control power drive actuator is closed, and close vacuum pump.
Further, when vacuum pump is in the voltage protection scheme, normal mode of operation and current protection mode
Any one when, if the vacuum pump opening time is overtime, send vacuum pump failure alarm signal.
Beneficial effects of the present invention: setting fixed frequency operating mode, normal mode of operation, current protection mode and voltage
These four operating modes of protected mode, according to key ON gear switch signal, battery voltage signal and vacuum pump pressure signal, choosing
Select the operating mode of vacuum pump.Enable vacuum pump to ensure and maintain basic brake boost pressure, while reducing Motorized vacuum
The Energy in use of pump, and by overvoltage protection.The reliability of vacuum pump is substantially increased, and is effectively reduced the energy consumption.Meanwhile
According to the size of vacuum pressure and the opening time of vacuum pump, the start and stop of vacuum pump are controlled, vacuum pump is further improved
Reliability.When vacuum pump operation time time-out, vacuum pump failure alarm is carried out, vacuum pump failure can be effectively prevented, ensured
The stable operation of vacuum pump.
Detailed description of the invention
Fig. 1 is Motorized vacuum pump control system module connection diagram of the present invention；
Fig. 2 is Motorized vacuum pump control system control flow chart of the present invention；
Specific embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail:
As shown in Figure 1, a kind of Motorized vacuum pump control system of the present invention includes power supply system 1, signal acquiring system 2 and control
System 3 processed.Low-tension supply is equipped with inside power supply system 1, for powering for signal acquiring system 2 and control system 3.Signal acquisition
System 2 is for acquiring vacuum pump pressure signal 2-1 and key ON gear switch signal 2-2.Control system 3 includes power supply voltage-stablizer 3-
1, signal condition system 3-2, multi-channel digital and analogue concentrator 3-3, interface processing system 3-4, central processing system 3-5, power drive
Device 3-6 and fault processing system 3-7.Wherein, power supply voltage-stablizer 3-1 is used to pass through at hardware filtering the supply voltage of battery
Reason realizes pressure stabilizing and pressure maintaining.Power supply voltage-stablizer 3-1 is exported after handling voltage to analog line driver 3-6, analog line driver
3-6 exports battery voltage signal to multi-channel digital and analogue concentrator 3-3.Signal acquiring system 2 by vacuum pump pressure signal 2-1 and
Key ON gear switch signal 2-2 is sent to signal condition system 3-2, is sent to after being filtered by signal condition system 3-2
Multi-channel digital and analogue concentrator 3-3.Multi-channel digital and analogue concentrator 3-3 by vacuum pump pressure signal 2-1, key ON gear switch signal 2-2, store
Correlation acquisition signal is supplied to interface processing system 3-4, interface processing system with the collection period of every 1ms by battery voltage signal
Threshold values is converted to physics and contains to signal progress state processing above and below the signalc threshold that 3-4 is configured according to central processing system 3-5
The signal of justice is supplied to central processing system 3-5 and is identified.Work after central processing system 3-5 identification to electric vacuum pump
Mode is allocated, and the control signal is sent to analog line driver 3-6, and analog line driver 3-6 is according to the control received
Signal control vacuum pump works in fixed frequency operating mode, normal mode of operation, current protection mode and voltage protection scheme,
And control the start and stop of vacuum pump.And when central processing system 3-5 judges that vacuum pump breaks down, send vacuum pump failure alarm
Signal gives fault processing system 3-7, fault processing system 3-7 to send the signal to carload instrument or CAN network.
It is illustrated in figure 2 the control flow chart of Motorized vacuum pump control system, is specifically illustrated with the following Examples:
It is (fixed frequency operating mode, normal that the present invention sets four kinds of operating modes to the operating of Motorized vacuum pumping system
Operating mode, current protection mode and voltage protection scheme), electric car is applicable in the need of the different work condition environments of brake boost
It asks.
Fixed frequency operating mode: Motorized vacuum pump work, i.e. unlatching vacuum pump are driven using fixed frequency operating mode
It vacuumizes 30 seconds, stops 60 seconds.
Normal mode of operation: empirically and Test Summary, the license of the vacuum pump under different operating voltages is formd
Maximum current, normal mode of operation drives Motorized vacuum pump work using maximum license operating current.
Current protection mode: according to battery voltage and VminThe limitation of relationship linear convergent rate restriction of current, i.e., using to true
The real time monitoring of sky pump end motor control current signal, the maximum license operating current with calibration, carries out negative-feedback comparison, compares
Current differential is decision content, when within the scope of permissible error, carrys out work according to present load current；More than permissible error model
It encloses, by the operating current that successively decreases, safeguard work electric current avoids low-voltage, high-current to the damage of vaccum pump motor in maximum license electric current
Wound.
Voltage protection scheme: Motorized vacuum pump work is driven using one grade of electric current smaller than maximum license operating current.
Key ON gear switch signal, battery voltage signal and vacuum pump pressure signal are acquired, according to key ON gear switch
Signal, battery voltage signal and vacuum pump pressure signal, control vacuum pump work in fixed frequency operating mode, voltage protection
Any one in mode, normal mode of operation and current protection mode.
When key ON gear switch signal is effective, and vacuum pump pressure signal multi collect is abnormal, into fixed frequency
Operating mode.
When vacuum pump pressure signal acquisition is normal, and battery voltage is greater than VmaxWhen, into voltage protection scheme；
When vacuum pump pressure signal acquisition is normal, and battery voltage is in [Vmin, Vmax] between when, into normal work
Mode；
When vacuum pump pressure signal acquisition is normal, and battery voltage is in [Voff, Vmin) between when, into current protection
Mode.
When vacuum pump is in any one in voltage protection scheme, normal mode of operation and current protection mode, also need
The start and stop of vacuum pump are controlled according to vacuum pump pressure signal:
When vacuum pump pressure is not less than brake vacuum upper pressure limit threshold values, control power drive actuator is closed, and close
Close vacuum pump；
When vacuum pump pressure is less than brake vacuum low pressure limit threshold values, power drive actuator is controlled, and open vacuum
Pump；
When vacuum pump pressure is less than brake vacuum upper pressure limit threshold values, and is not less than brake vacuum low pressure limit threshold values,
If vacuum pump is not opened or vacuum pump has turned on, and opens time-out, then control power drive actuator is closed, and close vacuum
Pump；If vacuum pump has turned on, but opens and have not timed out, then continue to control power drive actuator, and open vacuum pump.
And when vacuum pump is in the fixed frequency operating mode, according to vacuumizing 30 seconds, stop 60 seconds fixed frequencies
Rate controls vacuum pump and opens and closes, using opening timer to vacuumizing progresss timing in 30 seconds, using closing timer to stopping
Only progress timing in 60 seconds:
When the unlatching timer expired of vacuum pump, vacuum pump closing timer is reset and is started timing, if vacuum pump
Timer expired is closed, then the unlatching timer of vacuum pump is reset and started timing, and repeats vacuum pump and opens timing
Whether time-out judges device；If vacuum pump is closed timer and had not timed out, control power drive actuator is closed, and close vacuum
Pump；
When the unlatching timer of vacuum pump has not timed out, power drive actuator is controlled, and open vacuum pump.
And when battery voltage is lower than VoffWhen, control power drive actuator is closed, and close vacuum pump.
When vacuum pump is in any one in voltage protection scheme, normal mode of operation and current protection mode, if
Central processing system 3-5 determines vacuum pump opening time time-out, then sends according to the period of every 10ms to fault processing system 3-7
The failure alarm signal is sent to vehicle or CAN network by vacuum pump failure alarm signal, fault processing system 3-7.
The above description is merely a specific embodiment, it is noted that anyone skilled in the art exists
Disclosed herein technical scope in, any changes or substitutions that can be easily thought of, should all cover protection scope of the present invention it
It is interior.
Claims (9)
1. a kind of Motorized vacuum pump control system, which is characterized in that including
Power supply system: for providing power supply for whole system；
Analog line driver: for inputting battery voltage signal to multi-channel digital and analogue concentrator, and central processing system transmission is received
Control signal, drive vacuum pump work according to the specified operating mode of control signal；
Signal acquiring system: for acquiring the brake vacuum pressure signal of vacuum pump and the key ON gear switch signal of vehicle, and
It is input to multi-channel digital and analogue concentrator；
Multi-channel digital and analogue concentrator: for receive battery voltage signal, vacuum pump brake vacuum pressure signal and ON grades of key
Switching signal, and it is sent to central processing system；
Central processing system: for being opened according to the brake vacuum pressure signal of battery voltage signal, vacuum pump and ON grades of key
OFF signal selects the operating mode of vacuum pump, and the operating mode is sent to analog line driver in a manner of controlling signal；
The operating mode includes fixed frequency operating mode, voltage protection scheme, normal mode of operation and current protection mode；
When the key ON gear switch signal is effective, and vacuum pump pressure signal multi collect is abnormal, into the fixation
Frequency operating mode；
When the vacuum pump pressure signal acquisition is normal, and battery voltage is greater than VmaxWhen, into the voltage protection scheme；
When the vacuum pump pressure signal acquisition is normal, and battery voltage is in [Vmin, Vmax] between when, into described normal
Operating mode；
When the vacuum pump pressure signal acquisition is normal, and battery voltage is in [Voff, Vmin) between when, into the electric current
Protected mode.
2. Motorized vacuum pump control system as described in claim 1, it is characterised in that: it further include fault processing system, it is described
Fault processing system is used to receive the vacuum pump failure alarm signal of central processing system transmission, and by the vacuum pump failure report
Alert signal is exported to the instrument of vehicle or CAN network.
3. Motorized vacuum pump control system as described in claim 1, it is characterised in that: including signal condition system, the letter
Number conditioning system is used to receive the brake vacuum pressure signal and key ON gear switch signal of signal acquiring system transmission, to braking
Vacuum-pressure signal and key ON gear switch signal are sent to multi-channel digital and analogue concentrator after being filtered.
4. Motorized vacuum pump control system as described in claim 1, it is characterised in that: including voltage-stablizer of powering, for confession
The voltage of electric system output is powered after carrying out pressure stabilizing for analog line driver and central processing system.
5. a kind of Motorized vacuum method for controlling pump, it is characterised in that: acquisition key ON gear switch signal, battery voltage signal and
Vacuum pump pressure signal controls vacuum pump according to key ON gear switch signal, battery voltage signal and vacuum pump pressure signal
Work in any one in fixed frequency operating mode, voltage protection scheme, normal mode of operation and current protection mode；
When the key ON gear switch signal is effective, and vacuum pump pressure signal multi collect is abnormal, into the fixation
Frequency operating mode；
When the vacuum pump pressure signal acquisition is normal, and battery voltage is greater than VmaxWhen, into the voltage protection scheme；
When the vacuum pump pressure signal acquisition is normal, and battery voltage is in [Vmin, Vmax] between when, into described normal
Operating mode；
When the vacuum pump pressure signal acquisition is normal, and battery voltage be in [Voff, Vmin) between when, into the electricity
Flow protected mode.
6. Motorized vacuum method for controlling pump as claimed in claim 5, it is characterised in that: vacuum pump is in the voltage protection mould
When any one in formula, normal mode of operation and current protection mode, opening for vacuum pump is controlled according to vacuum pump pressure signal
Stop；
When vacuum pump pressure is not less than brake vacuum upper pressure limit threshold values, control power drive actuator is closed, and is closed true
Sky pump；
When vacuum pump pressure is less than brake vacuum low pressure limit threshold values, power drive actuator is controlled, and open vacuum pump；
When vacuum pump pressure is less than brake vacuum upper pressure limit threshold values, and is not less than brake vacuum low pressure limit threshold values, if very
Sky pump is not opened or vacuum pump has turned on, and opens time-out, then closes control power drive actuator, and close vacuum pump；If
Vacuum pump has turned on, but opens and have not timed out, then continues to control power drive actuator, and open vacuum pump.
7. Motorized vacuum method for controlling pump as claimed in claim 6, which is characterized in that when vacuum pump is in the fixed frequency
When operating mode, opened and closed according to fixed frequency control vacuum pump:
When the unlatching timer expired of vacuum pump, vacuum pump closing timer is reset and is started timing, if vacuum pump is closed
The unlatching timer of vacuum pump is then reset and is started timing by timer expired, and repeat vacuum pump open timer be
No time-out judgement；If vacuum pump is closed timer and had not timed out, control power drive actuator is closed, and close vacuum pump；
When the unlatching timer of vacuum pump has not timed out, power drive actuator is controlled, and open vacuum pump.
8. Motorized vacuum method for controlling pump as claimed in claim 7, it is characterised in that: when battery voltage is lower than VoffWhen, it closes
Control power drive actuator is closed, and closes vacuum pump.
9. the Motorized vacuum method for controlling pump as described in any one in claim 5-8, it is characterised in that: when vacuum pump is in
When any one in the voltage protection scheme, normal mode of operation and current protection mode, if the vacuum pump opening time is super
When, then send vacuum pump failure alarm signal.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610714983.4A CN106218625B (en) | 2016-08-24 | 2016-08-24 | Motorized vacuum pump control system and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610714983.4A CN106218625B (en) | 2016-08-24 | 2016-08-24 | Motorized vacuum pump control system and method |
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| CN106218625A CN106218625A (en) | 2016-12-14 |
| CN106218625B true CN106218625B (en) | 2019-03-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022195178A1 (en) * | 2021-03-16 | 2022-09-22 | Psa Automobiles Sa | Method for controlling a vacuum pump of an electric vehicle |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107776561A (en) * | 2017-10-23 | 2018-03-09 | 奇瑞汽车股份有限公司 | Vacuum brake control method |
| CN108030967B (en) * | 2017-12-15 | 2020-06-09 | 惠州市爱尼宝母婴用品有限公司 | Method for the suction stabilization of a breast pump |
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| CN104477158A (en) * | 2014-11-19 | 2015-04-01 | 华晨汽车集团控股有限公司 | Monitoring method for electric vehicle electric vacuum pump |
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| GB2492404B (en) * | 2011-07-01 | 2014-03-12 | Jaguar Land Rover Ltd | Method of controlling vacuum pump for vehicle brake booster |
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| DE102004052781B4 (en) * | 2004-10-30 | 2009-05-07 | Audi Ag | Brake pressure booster for road vehicles |
| CN103359098A (en) * | 2012-03-27 | 2013-10-23 | 北汽福田汽车股份有限公司 | Electromobile control method |
| CN104477158A (en) * | 2014-11-19 | 2015-04-01 | 华晨汽车集团控股有限公司 | Monitoring method for electric vehicle electric vacuum pump |
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| WO2022195178A1 (en) * | 2021-03-16 | 2022-09-22 | Psa Automobiles Sa | Method for controlling a vacuum pump of an electric vehicle |
| FR3120836A1 (en) * | 2021-03-16 | 2022-09-23 | Psa Automobiles Sa | METHOD FOR CONTROLLING A VACUUM PUMP OF AN ELECTRIC VEHICLE |
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Address after: 430056 No. 1 Dongfeng Avenue, Wuhan economic and Technological Development Zone, Hubei, Wuhan Patentee after: dFac Address before: 430056 No. 1 Dongfeng Avenue, Wuhan economic and Technological Development Zone, Hubei, Wuhan Patentee before: Dongfeng Car Co. |