CN111751114A - Light mixing system start-stop reliability test control system and method - Google Patents
Light mixing system start-stop reliability test control system and method Download PDFInfo
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- CN111751114A CN111751114A CN202010647567.3A CN202010647567A CN111751114A CN 111751114 A CN111751114 A CN 111751114A CN 202010647567 A CN202010647567 A CN 202010647567A CN 111751114 A CN111751114 A CN 111751114A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/04—Testing internal-combustion engines
- G01M15/05—Testing internal-combustion engines by combined monitoring of two or more different engine parameters
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/02—Details or accessories of testing apparatus
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/003—Environmental or reliability tests
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/005—Testing of electric installations on transport means
- G01R31/006—Testing of electric installations on transport means on road vehicles, e.g. automobiles or trucks
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/34—Testing dynamo-electric machines
- G01R31/343—Testing dynamo-electric machines in operation
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Abstract
The invention discloses a light mixing system start-stop reliability test control system and a method, wherein the light mixing system comprises an engine and a BSG motor, and the control system comprises: the test bench comprises a rapid prototype control unit, a rotating speed sensor, a clutch device, a dynamometer and a test bench control module, wherein the dynamometer is connected with an engine through the clutch device; the rapid prototype control unit is used for storing a preset test program; the rotating speed sensor is used for acquiring the rotating speed of the engine; the test bench control module is used for acquiring a test starting signal, driving the rapid prototype control unit to control the engine and the BSG motor to operate according to a preset test program, receiving the rotating speed of the engine, controlling the clutch device to be closed if the rotating speed of the engine is greater than a preset rotating speed threshold value, and controlling the dynamometer to control the rotating speed of the engine until the engine is stopped; otherwise, controlling the clutch device to be separated. The invention adopts the engine test bench to carry out reliability test on the light mixing system, thereby reducing the test cost.
Description
Technical Field
The invention relates to the technical field of vehicle testing, in particular to a start-stop reliability testing control system and method for a light mixing system.
Background
With the increase and popularization of vehicles, higher requirements are put forward on the fuel economy of the vehicles, the standard voltage of vehicle-mounted electric equipment is increased to 48V by the light mixing system, meanwhile, the low-efficiency operation interval output by the engine power system is optimized by the 48V motor, and the fuel economy is good.
The fuel-saving effect of the light mixing system is mainly realized by an automatic start-stop control strategy, however, the performance requirements of frequent start-stop on an engine, a transmission mechanism and a 48V motor are high, and in order to ensure the reliability of the whole vehicle in the whole life cycle, the start-stop reliability test of the light mixing system is required in the design and development process.
Because the system that mixes lightly frequently, traditional engine test rack can't be applicable to and test the system that mixes lightly, and at present, the configuration system that mixes lightly is widely adopted on the test car to domestic car enterprise, carries out the reliability test to the test car, and its shortcoming that exists is that the test node lags relatively in the product design development process, and the test cycle length is long, and the feedback time to the test problem is short, the task is heavy, and simultaneously, after the test, test car life reaches the upper limit, and the test cost is high.
Disclosure of Invention
The invention provides a start-stop reliability test control system and method for a light mixing system, solves the problems of long reliability test period and high cost of the light mixing system, and is beneficial to improving the test efficiency.
In a first aspect, an embodiment of the present invention provides a start-stop reliability test control system for a light mixing system, where the light mixing system includes an engine and a BSG motor connected to the engine through a transmission mechanism, and the test control system includes: the test bench comprises a rapid prototype control unit, a rotating speed sensor, a clutch device, a dynamometer and a test bench control module, wherein the dynamometer is connected with the engine through the clutch device; the rapid prototype control unit is used for storing a preset test program; the rotating speed sensor is used for acquiring the rotating speed of an engine in the test process and sending the rotating speed of the engine to the test bench control module; the test bench control module is used for acquiring a test starting signal, driving the rapid prototype control unit to execute the preset test program, controlling the start-stop operation of the engine and the BSG motor, receiving the rotating speed of the engine, and controlling the clutch device to be separated or closed according to the rotating speed of the engine; if the rotating speed of the engine is greater than the preset rotating speed threshold value, controlling the clutch device to be closed, and controlling the dynamometer to control the rotating speed of the engine until the engine is safely stopped; otherwise, controlling the clutch device to be separated.
Optionally, the rapid prototyping control unit includes a counter, and the counter is configured to count the number of times of start and stop of the engine, and if the number of times of start and stop reaches a preset number, the rapid prototyping control unit controls the engine and the BSG motor to stop.
Optionally, the light mixing system start-stop reliability test control system further includes a battery simulator, where the battery simulator is configured to receive a test start signal sent by the test bench control module, supply power to the BSG motor, collect charge-discharge parameters of the battery simulator, and send the charge-discharge parameters to the test bench control module; the test bench control module is also used for recording and storing the charge and discharge parameters.
Optionally, the light mixing system start-stop reliability test control system further includes a fuel supply measuring unit, where the fuel supply measuring unit is configured to receive a test start signal sent by the test bench control module, provide fuel for the engine, collect a fuel consumption parameter of the engine, and send the fuel consumption parameter to the test bench control module; the test bench control module is also used for recording and storing the oil consumption parameters.
Optionally, the start-stop reliability test control system for a light mixing system further includes: the test auxiliary device and the test switch are arranged between the low-voltage power supply and the rapid prototype control unit; the test auxiliary device is connected with the test bench control module and used for providing test conditions and sending the test conditions to the test bench control module; the test bench control module is further used for generating a test starting signal when the test condition reaches a preset test condition, controlling the test switch to be closed, and driving the rapid prototyping control unit to control the start-stop operation of the engine and the BSG motor according to the preset test program.
Optionally, the test bench control module is provided with an analog quantity input/output port and a digital quantity input/output port, and the analog quantity input/output port is used for sending a clutch control signal to the clutch device to control the clutch device to be opened or closed; and the digital quantity input/output port is used for sending on-off control signals to the test switch to control the test switch to be switched on or switched off.
Optionally, the start-stop reliability test control system for a light mixing system further includes: the engine control unit and the motor control unit are connected with the rapid prototype control unit, and the engine control unit is used for receiving the preset test program and controlling the engine to run; and the motor control unit is used for receiving the preset test program and controlling the BSG motor to operate.
In a second aspect, an embodiment of the present invention further provides a method for controlling start-stop reliability test of a light mixing system, where the light mixing system includes an engine and a BSG motor connected to the engine, the engine is connected to a dynamometer through a clutch device, and the method specifically includes the following steps: acquiring a preset test program; issuing a test starting signal, and controlling the start-stop operation of the engine and the BSG motor according to the preset test program; acquiring the rotating speed of an engine in the test process; judging whether the rotating speed is greater than a preset rotating speed threshold value or not; if the rotating speed is greater than the preset rotating speed threshold value, controlling a clutch device to be closed, and controlling the dynamometer to control the rotating speed of the engine until the engine is safely stopped; otherwise, controlling the clutch device to be separated.
Optionally, the start-stop reliability test control method for the light mixing system further includes the following steps: acquiring the start-stop times of the normal start-stop of the engine; judging whether the start-stop times reach preset times or not; and if so, controlling the engine and the BSG motor to stop.
Optionally, the start-stop reliability test control method for the light mixing system further includes the following steps: obtaining a test condition; judging whether the test condition reaches a preset test condition or not; if yes, generating a test starting signal, and controlling the start-stop operation of the engine and the BSG motor according to the preset test program.
The light mixing system start-stop reliability test control method provided by the embodiment of the invention comprises an engine and a BSG motor connected with the engine, wherein an output shaft of the engine is connected with a dynamometer through a clutch device, a test starting signal is obtained through a test bench control module, the rapid prototype control unit is driven to control the start-stop operation of the engine and the BSG motor according to a preset test program, a rotating speed sensor is adopted to obtain the rotating speed of the engine in the test process, if the rotating speed of the engine is greater than a preset rotating speed threshold value, the test bench control module controls the clutch device to be closed, and controls the dynamometer to control the rotating speed of the engine until the engine is safely stopped; otherwise, the test bench control module controls the clutch device to be disengaged, and the dynamometer does not run. The invention realizes the reliability test of the light mixing system by using the bench test control system, avoids frequent start and stop of the engine to damage the dynamometer, solves the problems of long reliability test period and high cost of the light mixing system, avoids the reliability test by using the whole vehicle, is beneficial to testing and developing time nodes in advance, shortens the test period, reduces the test cost, improves the test efficiency and has high popularization value.
Drawings
Fig. 1 is a schematic structural diagram of a start-stop reliability test control system of a light mixing system according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of another start-stop reliability test control system for a light mixing system according to an embodiment of the present invention;
fig. 3 is a flowchart of a start-stop reliability test control method for a light mixing system according to a second embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Example one
Fig. 1 is a schematic structural diagram of a start-stop reliability test control system of a light mixing system according to an embodiment of the present invention. The embodiment can be applied to an application scene of performing start-stop reliability test on the light mixing system by using the test bench. As shown in fig. 1, the mild hybrid system includes an engine 110 and a BSG motor 120 connected to the engine 110 through a transmission mechanism, wherein the transmission mechanism includes a transmission belt.
In this embodiment, the light hybrid system may be a 48V light hybrid system, the BSG motor 120 may be a 48V electric motor, and the BSG motor 120 is connected to the engine through a transmission mechanism, so that when the engine starts or accelerates suddenly, the 48V electric motor may increase instantaneous horsepower and torque of the engine 110, avoid an inefficient operation region of high power output of the engine 110, and improve fuel economy of the power system.
As shown in fig. 1, the start-stop reliability test control system of the light mixing system comprises: the rapid prototyping control unit 210, the rotating speed sensor 220, the clutch device 230, the dynamometer 240 and the test bench control module 250, wherein the dynamometer 240 is connected with the output shaft of the engine 110 through the clutch device 230; the rapid prototyping control unit 210 is configured to store a preset test program; the rotation speed sensor 220 is used for acquiring the rotation speed of the engine in the test process and sending the rotation speed of the engine to the test bench control module 250; the test bench control module 250 is configured to obtain a test start signal, drive the rapid prototyping control unit 210 to control start and stop operations of the engine 110 and the BSG motor 120 according to a preset test program, receive the rotation speed of the engine 110, and control the clutch device 230 to be disengaged or engaged according to the rotation speed of the engine 110; if the engine speed is greater than the preset speed threshold, the test bench control module 250 controls the clutch device 230 to be closed and controls the dynamometer 240 to control the speed of the engine 110 until the engine 110 is safely stopped; otherwise, the test rig control module 250 controls the clutch device 230 to disengage.
The rapid prototyping control unit 210 is equivalent to a vehicle control unit for implementing an automatic driving control function of a vehicle, and is used for storing the preset test program codes and controlling the start, stop and operation of the light mixing system according to the preset test program, and the rapid prototyping control unit 210 can be powered by a vehicle-mounted 12V battery assembly.
In the present embodiment, before the start-stop reliability test is performed, the clutch device 230 is kept in the disengaged state, and the dynamometer 240 is disconnected from the output shaft of the engine 110. After the test bench control module 250 obtains the test start signal, the rapid prototyping control unit 210 is controlled to be powered on, and after the rapid prototyping control unit 210 is powered on, a preset test program is executed, so that the engine 110 and the BSG motor 120 are controlled to start, stop and operate according to the preset test program.
In the normal test process, the rotating speed sensor 220 acquires the rotating speed of the engine in real time, the test bench control module 250 receives the rotating speed of the engine and judges whether the rotating speed of the engine exceeds a preset rotating speed threshold value, if the rotating speed of the engine exceeds the preset rotating speed threshold value, the test bench control module 250 controls the clutch device 230 to be closed, the dynamometer 240 is connected with the output shaft of the engine 110, and the test bench control module 250 controls the dynamometer 240 to control the rotating speed of the engine 110 until the engine 110 is safely stopped; if the engine speed does not exceed the preset speed threshold, the test stand control module 250 controls the clutch device 230 to maintain the disengaged state, the dynamometer 240 is disconnected from the output shaft of the engine 110, and the dynamometer 240 is not operated.
For example, during a normal test, if a fuel injector or a speed regulator fails, or a fuel tank enters extra fuel, the engine 110 has an overspeed fault, which results in the engine speed exceeding a preset speed threshold, at which time, the test bench control module 250 controls the clutch device 230 to close, the dynamometer 240 is connected with the output shaft of the engine 110, and the test bench control module 250 controls the dynamometer 240 to perform speed control on the engine 110 until the engine 110 is safely stopped.
In this embodiment, the test bench control module 250 is further configured to count the number of times of the overspeed shutdown, and determine that the soft hybrid system fails the reliability test if the number of times of the overspeed shutdown is greater than or equal to a preset overspeed shutdown upper limit threshold.
The light mixing system start-stop reliability test control method provided by the embodiment of the invention comprises an engine and a BSG motor connected with the engine, wherein an output shaft of the engine is connected with a dynamometer through a clutch device, a test starting signal is obtained through a test bench control module, the rapid prototype control unit is driven to control the start-stop operation of the engine and the BSG motor according to a preset test program, a rotating speed sensor is adopted to obtain the rotating speed of the engine in the test process, if the rotating speed of the engine is greater than a preset rotating speed threshold value, the test bench control module controls the clutch device to be closed, and controls the dynamometer to control the rotating speed of the engine until the engine is safely stopped; otherwise, the test bench control module controls the clutch device to be disengaged, and the dynamometer does not run. The invention realizes the reliability test of the light mixing system by using the bench test control system, avoids frequent start and stop of the engine to damage the dynamometer, solves the problems of long reliability test period and high cost of the light mixing system, avoids the reliability test by using the whole vehicle, is beneficial to testing and developing time nodes in advance, shortens the test period, reduces the test cost, improves the test efficiency and has high popularization value.
Alternatively, the rapid prototyping control unit 210 includes a counter for counting the number of times of start and stop of the engine 110, and if the number of times of start and stop reaches a preset number of times, the rapid prototyping control unit 210 controls the engine 110 and the BSG motor 120 to be stopped.
In the present embodiment, starting, running, and stopping of the engine 110 and the BSG motor 120 are defined as a test cycle, during the whole start-stop reliability test process, the rapid prototyping control unit 210 controls the engine 110 and the BSG motor 120 to execute a test cycle for a preset number of times according to a preset test program, and if the start-stop number of the engine 110 reaches the preset number of times, the rapid prototyping control unit 210 controls the engine 110 and the BSG motor 120 to stop, and determines that the lightweight hybrid system passes the start-stop reliability test.
For example, the preset test program may include a low speed test sub-program and a high speed test sub-program, and when the low speed test sub-program is executed, the rapid prototyping control unit 210 controls the engine 110 to start without providing a throttle signal to a throttle sensor of the engine 110, the engine 110 is operated at an idle speed (for example, the idle speed may be 800rpm), and if the idle operation time reaches a first preset time (for example, 30 seconds), the rapid prototyping control unit 210 issues a stop command to adjust a throttle opening of the engine 110, stop fuel supply, and control the engine 110 to stop. When the high-speed test subroutine is executed, the rapid prototyping control unit 210 controls the engine 110 to start, then provides an accelerator signal to a throttle sensor of the engine 110, increases the throttle opening of the engine 110, controls the engine 110 to rotate at a high speed (for example, 2800rpm), and if the operating time reaches a second preset time (for example, 20 seconds), the rapid prototyping control unit 210 issues a stop command, adjusts the throttle opening of the engine 110, stops supplying oil, and controls the engine 110 to stop.
For example, during the whole start-stop reliability test process, the rapid prototyping control unit 210 may execute M low-speed test subroutines and N high-speed test subroutines in a sequential loop, typically, M equals 9 and N equals 1, that is, after every 9 low-speed test subroutines executed by the rapid prototyping control unit 210, 1 high-speed test subroutine is executed, and a sequential loop is executed until the number of start-stop times of the engine 110 reaches a preset number.
Optionally, as shown in fig. 1, the start-stop reliability test control system of the light mixing system further includes a battery simulator 260, where the battery simulator 260 is configured to receive a test start signal sent by the test bench control module 250, supply power to the BSG motor 120, collect charge and discharge parameters of the battery simulator 260, and send the charge and discharge parameters to the test bench control module 250; the test bench control module 250 is also used to record and store charge and discharge parameters.
In this embodiment, the battery simulator 260 has a programmable function and adopts a full digital control mode, the battery simulator 260 is used for simulating the charging and discharging characteristics of a 48V power battery and can receive the electric energy recovered by the BSG motor 120 in real time, and the battery simulator 260 and the test bench control module 250 can realize bidirectional data transmission.
Specifically, after the test bench control module 250 obtains the test start signal, the test bench control module 250 sends the test start signal to the battery simulator 260, controls the battery simulator 260 to supply power to the BSG motor 120, and collects charge and discharge parameters of the battery simulator 260, wherein the charge and discharge parameters include electric quantity, charge voltage, charge current, and the like. Further, the battery simulator 260 sends the charge and discharge parameters to the test bench control module 250, and the test bench control module 250 is further configured to record and store the charge and discharge parameters, so that an operator can conveniently monitor the running state of the BSG motor 120 in real time. Therefore, the battery simulator is adopted to supply power to the BSG motor, the reliability test of the light hybrid system is realized by utilizing the bench test control system before the test node of the start-stop reliability test of the 48V light hybrid power assembly, and in the test process, an additional 48V power supply is not required, so that the time node for testing and developing in advance is facilitated, the test period is shortened, and the test cost is reduced.
Optionally, as shown in fig. 1, the start-stop reliability test control system of the light mixing system further includes a fuel supply measuring unit 270, where the fuel supply measuring unit 270 is configured to receive a test start signal sent by the test bench control module 250, provide fuel to the engine 110, collect a fuel consumption parameter of the engine 110, and send the fuel consumption parameter to the test bench control module 250; the test rig control module 250 is also configured to record and store fuel consumption parameters of the engine 110.
In this embodiment, the fuel supply measuring unit 270 may include a fuel supply measuring instrument, the fuel supply measuring instrument includes a fuel injection supply system and a fuel consumption sensor, and the fuel supply measuring unit 270 may implement bidirectional data transmission with the test rack control module 250.
Specifically, after the test bench control module 250 obtains the test start signal, the test bench control module 250 sends the test start signal to the fuel supply measuring unit 270, controls the fuel injection supply system to supply fuel to the engine 110, and controls the fuel consumption sensor to acquire the fuel consumption parameter of the engine 110 in real time, where the fuel consumption parameter includes the fuel consumption. Further, the fuel supply measuring unit 270 sends the fuel consumption parameter of the engine 110 to the test bench control module 250, and the test bench control module 250 is further configured to record and store the fuel consumption parameter of the engine 110, so that an operator can monitor the running state of the engine 110 in real time. Therefore, the fuel supply measuring unit is adopted to supply fuel to the engine, the reliability test of the light mixing system is realized by using the bench test control system before the test node of the start-stop reliability test of the 48V light hybrid power assembly, and in the test process, the fuel supply is not needed, so that the time node of test development in advance is facilitated, the test period is shortened, and the test cost is reduced.
Optionally, as shown in fig. 1, the start-stop reliability test control system of the light mixing system further includes a test auxiliary device 280 and a test switch S, the test switch S is disposed between the low voltage power supply 100 and the rapid prototyping control unit 210, and a control end of the test switch S is connected to the test bench control module 250; the test auxiliary device 280 is connected with the test bench control module 250, and is used for providing test conditions and sending the test conditions to the test bench control module 250; the test bench control module 250 is further configured to generate a test start signal when the test condition reaches a preset test condition, control the test switch S to be closed, and drive the rapid prototyping control unit 210 to control the start-stop operation of the engine 110 and the BSG motor 120 according to a preset test program.
The low voltage power source 100 may be an on-vehicle 12V battery assembly.
In this embodiment, the test condition of the rack test control system includes an on-off state, a water pressure, an oil pressure and a power supply, the test auxiliary device 280 includes a rack control switch, a water supply system, an oil supply system, a power supply system, a pressure detection unit and a voltage detection unit, wherein the rack control switch includes a test start switch and a test stop switch, the water supply system is used for supplying water to the whole rack test control system, the oil supply system is used for supplying oil to the whole rack test control system, the power supply system is used for supplying power to the whole rack test control system, the pressure detection unit is used for detecting a water pressure parameter of a water supply pipeline of the rack test control system and an oil pressure parameter of the oil supply pipeline, and the voltage detection unit is used for detecting a power supply voltage of.
Specifically, the pressure detection unit sends the collected water pressure parameter and oil pressure parameter to the test bench control module 250, the voltage detection unit sends the collected power supply voltage to the test bench control module 250, the test bench control module 250 determines whether the switch state, the water pressure parameter, the oil pressure parameter and the power supply voltage reach a preset test condition, if the preset test condition is reached, the test bench control module 250 generates a test start signal, wherein the test start signal is a digital quantity signal, the test bench control module 250 sends the test start signal to the test switch S to control the test switch S to be closed, the low-voltage power supply 100 powers on the rapid prototype control unit 210, the rapid prototype control unit 210 powers on to operate, and the engine 110 and the BSG motor 120 are controlled to start, stop and operate according to a preset test program.
Optionally, the test bench control module 250 is provided with an analog quantity input/output port P1 and a digital quantity input/output port P2, and the analog quantity input/output port P1 is used for sending a clutch control signal to the clutch device 230 to control the clutch device 230 to be opened or closed; the digital quantity input/output port P2 is used for sending an on-off control signal to the test switch S to control the test switch S to be turned on or turned off.
In this embodiment, a clutch driving mechanism is provided between the analog input/output port P1 and the clutch 230, the clutch control signal may be an analog voltage signal, and the clutch driving mechanism drives the clutch 230 to open or close according to the voltage value of the received analog voltage signal.
During normal testing, the test bench control module 250 receives the engine speed in real time, and determines whether the engine speed exceeds a preset speed threshold, if the engine speed exceeds the preset speed threshold, the analog input/output port P1 outputs a first clutch control signal, for example, the voltage value of the first clutch control signal may be 12V, the clutch device driving mechanism receives the first clutch control signal, drives the clutch device 230 to close, the dynamometer 240 is connected with the output shaft of the engine 110, and the test bench control module 250 controls the dynamometer 240 to perform speed control on the engine 110 until the engine 110 is safely stopped; if the engine speed does not exceed the preset speed threshold, the analog input/output port P1 outputs a second clutch control signal, for example, the voltage value of the second clutch control signal may be 0V, the clutch driving mechanism drives and receives the second clutch control signal, drives the clutch 230 to disengage, the dynamometer 240 is disconnected from the output shaft of the engine 110, the rapid prototyping control unit 210 controls the engine 110 to start, stop and run, and the dynamometer 240 does not work, thereby preventing the dynamometer from being frequently started and stopped and damaged during the test process.
Fig. 2 is a schematic structural diagram of another start-stop reliability test control system for a light mixing system according to an embodiment of the present invention. Arrows in the figure are used to indicate the direction of signal transmission.
Optionally, as shown in fig. 2, the start-stop reliability test control system of the light mixing system further includes: the engine control unit 130 and the motor control unit 140, the engine control unit 130 and the motor control unit 140 are connected to the rapid prototyping control unit 210, and the engine control unit 130 is configured to receive a preset test program and control the operation of the engine 110; the motor control unit 140 is configured to receive a preset test program and control the BSG motor 120 to operate.
In this embodiment, after the test program is started, the low voltage power supply 100 supplies power to the engine control unit 130 and the motor control unit 140, for example, the low voltage power supply 100 may be a vehicle-mounted 12V battery assembly, the rapid prototyping control unit 210 is connected to the engine control unit 130 through a CAN bus, the rapid prototyping control unit 210 sends a preset test program to the engine control unit 130, the engine control unit 130 drives the engine to start, stop, and run according to an engine control instruction in the preset test program, and collects engine running parameters in real time, for example, the engine running parameters include engine starting time, engine speed, and the number of engine start-stop times, and the engine control unit 130 may also send the engine running parameters to the rapid prototyping control unit 210 through the CAN bus, thereby implementing closed-loop control of the engine 110.
In this embodiment, the rapid prototyping control unit 210 is further connected to the motor control unit 140 through a CAN bus, the rapid prototyping control unit 210 sends a preset test program to the motor control unit 140, the motor control unit 140 drives the BSG motor 120 to start, stop, and operate according to a motor control instruction in the preset test program, and collects motor operation parameters in real time, for example, the motor operation parameters include a motor rotation speed, a motor start-stop frequency, and the like, the motor control unit 140 may also send the motor operation parameters to the rapid prototyping control unit 210 through the CAN bus, so as to implement closed-loop control of the BSG motor 120, thereby implementing automation control and test data recording in a test process.
Optionally, as shown in fig. 2, the start-stop reliability test control system of the light mixing system further includes an inverter 150, where the inverter 150 is disposed between the motor control unit 140 and the BSG motor 120, and the inverter 150 receives the control signal output by the motor control unit 140 to adjust the rotation speed of the BSG motor 120.
Therefore, the light mixing system start-stop reliability test control method provided by the embodiment of the invention realizes the reliability test of the light mixing system by using the bench test control system, avoids the damage to the dynamometer caused by frequent start-stop of the engine, solves the problems of long reliability test period and high cost of the light mixing system, avoids the reliability test by using the whole vehicle, is beneficial to testing and developing time nodes in advance, shortens the test period, reduces the test cost, improves the test efficiency and has high popularization value.
Example two
The second embodiment of the invention provides a start-stop reliability test control method for a light mixing system, the light mixing system comprises an engine and a BSG motor connected with the engine, the start-stop reliability test control method for the light mixing system can be executed by the start-stop reliability test control system for the light mixing system, the start-stop reliability test control system for the light mixing system comprises a rapid prototype control unit, a rotating speed sensor, a clutch device, a dynamometer and a test bench control module, and the dynamometer is connected with the engine through the clutch device.
Fig. 3 is a flowchart of a start-stop reliability test control method for a light mixing system according to a second embodiment of the present invention. As shown in fig. 3, the test control method specifically includes the following steps:
step S1: and acquiring a preset test program.
The preset test program includes all instruction codes for controlling the engine and the BSG motor to perform starting, stopping, running and monitoring, the rapid prototyping control unit 210 may be configured to store the preset test program codes, which are equivalent to a vehicle controller for implementing an automatic driving control function of a vehicle, and is used for controlling the starting, stopping and running of the light mixing system according to the preset test program
Step S2: and issuing a test starting signal, and controlling the start-stop operation of the engine and the BSG motor according to a preset test program.
Step S3: and acquiring the rotating speed of the engine in the test process.
Step S4: and judging whether the rotating speed is greater than a preset rotating speed threshold value.
If yes, go to step S5; otherwise, step S6 is executed.
Step S5: and controlling the clutch device to be closed, and controlling the dynamometer to control the rotating speed of the engine until the engine is safely stopped.
Step S6: and controlling the clutch device to be separated.
In the present embodiment, before the start-stop reliability test is performed, the clutch device is kept in the disengaged state, and the dynamometer is disconnected from the output shaft of the engine. And after the test starting signal is obtained, controlling the engine and the BSG motor to start, stop and operate according to a preset test program.
In the normal test process, the rotating speed of the engine is collected in real time, whether the rotating speed of the engine exceeds a preset rotating speed threshold value or not is judged, if the rotating speed of the engine exceeds the preset rotating speed threshold value, the clutch device is controlled to be closed, the dynamometer is connected with an output shaft of the engine, and the dynamometer is controlled to control the rotating speed of the engine until the engine is safely stopped; if the rotating speed of the engine does not exceed the preset rotating speed threshold value, the clutch device is controlled to be kept in a separation state, the dynamometer is disconnected with the output shaft of the engine 1, and the dynamometer does not run.
Optionally, the start-stop reliability test control method for the light mixing system further includes the following steps:
acquiring the start-stop times of the normal start-stop of the engine;
judging whether the starting and stopping times reach preset times or not;
and if so, controlling the engine and the BSG motor to stop.
In the embodiment, starting, running and stopping of the engine and the BSG motor are defined as a test cycle, in the whole starting and stopping reliability test process, the engine and the BSG motor are controlled to execute the test cycle for the preset times according to the preset test program, if the starting and stopping times of the normal starting and stopping of the engine reach the preset times, the engine and the BSG motor are controlled to stop, and the light mixing system is judged to pass the starting and stopping reliability test.
Optionally, the start-stop reliability test control method for the light mixing system further includes the following steps: obtaining a test condition; judging whether the test condition reaches a preset test condition or not; if yes, generating a test starting signal, and controlling the start-stop operation of the engine and the BSG motor according to a preset test program.
In this embodiment, the test conditions include an on-off state, a water pressure, an oil pressure and a power supply, the on-off state, the water pressure parameter, the oil pressure parameter and the power supply voltage of the test control system are collected, whether the on-off state, the water pressure parameter, the oil pressure parameter and the power supply voltage reach preset test conditions is judged, if the preset test conditions are reached, a test starting signal is generated, wherein the test starting signal is a digital quantity signal, the test starting signal is transmitted to the test switch, the test switch is controlled to be closed, the low-voltage power supply is powered on, and the engine and the BSG motor are controlled to start, stop and operate according to a preset.
Optionally, the start-stop reliability test control method for the light mixing system further includes the following steps: receiving a test starting signal; controlling a battery simulator to supply power to the BSG motor; collecting charge and discharge parameters of a battery simulator; and recording and storing the charge and discharge parameters of the battery simulator.
Optionally, the start-stop reliability test control method for the light mixing system further includes the following steps: receiving a test starting signal; controlling a fuel supply measuring unit to supply fuel to the engine; collecting oil consumption parameters of an engine; and recording and storing the oil consumption parameters of the engine.
To sum up, the start-stop reliability test control method for the light mixing system provided by the embodiment of the invention performs start-stop reliability test on the light mixing system, the light mixing system comprises an engine and a BSG motor connected with the engine, an output shaft of the engine is connected with a dynamometer through a clutch device, a test starting signal is obtained through a test bench control module, the rapid prototyping control unit is driven to control the start-stop operation of the engine and the BSG motor according to a preset test program, a rotating speed sensor is adopted to obtain the rotating speed of the engine in the test process, if the rotating speed of the engine is greater than a preset rotating speed threshold value, the test bench control module controls the clutch device to be closed, and controls the dynamometer to perform rotating speed control on the engine until the engine is safely stopped; otherwise, the test bench control module controls the clutch device to be disengaged, and the dynamometer does not run. The invention realizes the reliability test of the light mixing system by using the bench test control system, avoids frequent start and stop of the engine to damage the dynamometer, solves the problems of long reliability test period and high cost of the light mixing system, avoids the reliability test by using the whole vehicle, is beneficial to testing and developing time nodes in advance, shortens the test period, reduces the test cost, improves the test efficiency and has high popularization value.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A light mixing system start-stop reliability test control system is characterized in that the light mixing system comprises an engine and a BSG motor connected with the engine through a transmission mechanism, and the test control system comprises: the test bench comprises a rapid prototype control unit, a rotating speed sensor, a clutch device, a dynamometer and a test bench control module, wherein the dynamometer is connected with the engine through the clutch device;
the rapid prototype control unit is used for storing a preset test program;
the rotating speed sensor is used for acquiring the rotating speed of an engine in the test process and sending the rotating speed of the engine to the test bench control module;
the test bench control module is used for acquiring a test starting signal, driving the rapid prototype control unit to execute the preset test program to control start and stop operation of the engine and the BSG motor, receiving the rotating speed of the engine, and controlling the clutch device to be separated or closed according to the rotating speed of the engine;
if the rotating speed of the engine is greater than the preset rotating speed threshold value, the test bench control module controls the clutch device to be closed and controls the dynamometer to carry out rotating speed control on the engine until the engine is safely stopped; otherwise, the test bench control module controls the clutch device to be separated.
2. The mild hybrid system start-stop reliability test control system according to claim 1, wherein the rapid prototype control unit comprises a counter for counting the number of start-stop times of the engine, and if the number of start-stop times reaches a preset number, the rapid prototype control unit controls the engine and the BSG motor to stop.
3. The light mixing system start-stop reliability test control system according to claim 1, further comprising a battery simulator, wherein the battery simulator is configured to receive a test start signal sent by the test bench control module, supply power to the BSG motor, collect charge and discharge parameters of the battery simulator, and send the charge and discharge parameters to the test bench control module;
the test bench control module is also used for recording and storing the charge and discharge parameters.
4. The start-stop reliability test control system of the light mixing system as claimed in claim 1, further comprising a fuel supply measuring unit, wherein the fuel supply measuring unit is configured to receive a test start signal sent by the test bench control module, supply fuel to the engine, collect a fuel consumption parameter of the engine, and send the fuel consumption parameter to the test bench control module;
the test bench control module is also used for recording and storing the oil consumption parameters.
5. The start-stop reliability test control system of a light mixing system according to claim 1, further comprising a test auxiliary device and a test switch, the test switch being disposed between a low voltage power supply and the rapid prototyping control unit; the test auxiliary device is connected with the test bench control module and used for providing test conditions and sending the test conditions to the test bench control module;
the test bench control module is further used for generating a test starting signal when the test condition reaches a preset test condition, controlling the test switch to be closed, and driving the rapid prototyping control unit to control the start-stop operation of the engine and the BSG motor according to the preset test program.
6. The light mixing system start-stop reliability test control system according to claim 5, wherein the test bench control module is provided with an analog input/output port and a digital input/output port, and the analog input/output port is used for sending a clutch control signal to the clutch device to control the clutch device to be opened or closed; and the digital quantity input/output port is used for sending on-off control signals to the test switch to control the test switch to be switched on or switched off.
7. The gently mixed system start-stop reliability test control system of claim 1, further comprising: the engine control unit and the motor control unit are connected with the rapid prototype control unit, and the engine control unit is used for receiving the preset test program and controlling the engine to run; and the motor control unit is used for receiving the preset test program and controlling the BSG motor to operate.
8. The light mixing system start-stop reliability test control method is characterized in that the light mixing system comprises an engine and a BSG motor connected with the engine, the engine is connected with a dynamometer through a clutch device, and the control method specifically comprises the following steps:
acquiring a preset test program;
issuing a test starting signal, and controlling the start-stop operation of the engine and the BSG motor according to the preset test program;
acquiring the rotating speed of an engine in the test process;
judging whether the rotating speed is greater than a preset rotating speed threshold value or not;
if the rotating speed is greater than the preset rotating speed threshold value, controlling a clutch device to be closed, and controlling the dynamometer to control the rotating speed of the engine until the engine is safely stopped;
otherwise, controlling the clutch device to be separated.
9. The soft-hybrid system start-stop reliability test control method according to claim 8, further comprising the steps of:
acquiring the start-stop times of the normal start-stop of the engine;
judging whether the start-stop times reach preset times or not;
and if so, controlling the engine and the BSG motor to stop.
10. The soft-hybrid system start-stop reliability test control method according to claim 8, further comprising the steps of: obtaining a test condition;
judging whether the test condition reaches a preset test condition or not;
if yes, generating a test starting signal, and controlling the start-stop operation of the engine and the BSG motor according to the preset test program.
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Application publication date: 20201009 |