CN102608995A - Test bed for hydraulic brake actuating mechanism - Google Patents
Test bed for hydraulic brake actuating mechanism Download PDFInfo
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- CN102608995A CN102608995A CN2012100707808A CN201210070780A CN102608995A CN 102608995 A CN102608995 A CN 102608995A CN 2012100707808 A CN2012100707808 A CN 2012100707808A CN 201210070780 A CN201210070780 A CN 201210070780A CN 102608995 A CN102608995 A CN 102608995A
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Abstract
The invention discloses a test bed for a hydraulic brake actuating mechanism, which comprises a real-time platform, an ICC (integrated circuit card) hydraulic brake system and a hydraulic test module. The hydraulic test module comprises a power source, a flow sensor, three pressure sensors with the same structures, five two-position and three-way valves with the same structures, a normally open two-position and two-way valve, two normally closed two-position and two-way valves with the same structures and a driving system. The driving system comprises eight relays with the same structures, wherein the relays include a power source relay, a first electromagnetic valve relay, a second electromagnetic valve relay, a third electromagnetic valve relay, a fourth electromagnetic valve relay, a fifth electromagnetic valve relay, a sixth electromagnetic valve relay, a seventh electromagnetic valve relay and an eighth electromagnetic valve relay. The real-time platform is connected with the ICC hydraulic brake system through an electric wire and connected with the hydraulic test module through a DS2211 type multi-way I/O (input/output) board and a driving system, and the ICC hydraulic brake system is connected with the hydraulic test module through a pipeline.
Description
Technical field
It is test bed to the present invention relates to a kind of topworks, and more particularly, it is test bed that it relates to a kind of hydraulic braking topworks.
Background technology
(Integrated Chassis Control, ICC) design of integrated manipulator itself is mostly only paid close attention in research to the integrated control of the vehicle chassis of present stage, and has ignored many control details, like the response characteristic of topworks and regulative mode etc.As one of main topworks of the integrated control in chassis, initiatively the meticulous adjusting of hydraulic braking force is the basis that guarantees the integrated control controlling performance in chassis.In integrated control structure; The action of each actuator is confirmed by central controller is unified; Precision and response speed to hydrostatic control are had higher requirement; But because brake fluid system has tangible nonlinear characteristic, realize that accurately control has certain difficulty, there be limited evidence currently of has research to relate to the response quality of concrete topworks.As I CC active hydraulic braking topworks; Hydraulic control unit (Hydraulic Control Unit; HCU) performance is to the controlling performance important influence of ICC system; Hydraulic braking topworks is test bed can to test the performance of HCU, thus the meticulous adjusting of attainment brake hydraulic pressure pressure.
Summary of the invention
Technical matters to be solved by this invention is to have overcome the problem that prior art exists, and provides a kind of hydraulic braking topworks test bed.
For solving the problems of the technologies described above, the present invention adopts following technical scheme to realize: described hydraulic braking topworks is test bed, is made up of real-time platform, I CC brake fluid system and hydraulic test module.Described hydraulic test module is by power source; No. 1 hydraulic control unit gateway pressure transducer; No. 2 hydraulic control unit gateway pressure transducers; The power source outlet pressure sensor; No. 1 two-position three-way valve; No. 2 two-position three-way valves; No. 3 two-position three-way valves; No. 4 two-position three-way valves; No. 5 two-position three-way valves; No. 6 normally closed type 2/2-way valves; No. 7 normally closed type 2/2-way valves; No. 8 2/2-way valves open in usual; Flow sensor; The power source relay; No. 1 solenoid relay valve; No. 2 solenoid relay valves; No. 3 solenoid relay valves; No. 4 solenoid relay valves; No. 5 solenoid relay valves; No. 6 solenoid relay valves; No. 7 solenoid relay valves and No. 8 solenoid relay valves are formed;
No. 3 interfaces of the outlet of power source and No. 3 two-position three-way valves are connected with No. 3 interface pipelines of No. 2 two-position three-way valves; No. 2 interfaces of No. 3 two-position three-way valves are connected with No. 2 interface pipelines of No. 5 two-position three-way valves, and the interface of No. 1 interface of No. 5 two-position three-way valves and No. 1 interface of No. 7 normally closed type 2/2-way valves, No. 1 hydraulic control unit gateway pressure transducer is connected with No. 1 hydraulic control unit gateway pipeline in the ICC brake fluid system; No. 2 interfaces of No. 2 two-position three-way valves are connected with No. 2 interface pipelines of No. 4 two-position three-way valves; No. 1 interface of No. 1 interface of No. 4 two-position three-way valves and No. 6 normally closed type 2/2-way valves is connected with No. 2 interface pipelines of No. 8 2/2-way valves open in usual, and No. 1 interface of No. 8 2/2-way valves open in usual and the interface of No. 2 hydraulic control unit gateway pressure transducers are connected with No. 2 hydraulic control unit gateway pipelines in the ICC brake fluid system; No. 3 interfaces of No. 5 two-position three-way valves and No. 4 two-position three-way valves and the entrance pipe of flow sensor are connected, and No. 2 interfaces of No. 6 normally closed type 2/2-way valves and No. 7 normally closed type 2/2-way valves and the export pipeline of flow sensor are connected; No. 3 interface pipelines of the inlet of power source and No. 1 two-position three-way valve are connected; No. 2 interfaces of No. 1 two-position three-way valve are connected with No. 1 interface pipeline of No. 3 two-position three-way valves; The ante-chamber channel of the master cylinder in No. 1 interface of No. 1 two-position three-way valve and the ICC brake fluid system is connected; No. 1 interface of No. 2 two-position three-way valves is connected with the master cylinder back cavity pipeline in the ICC brake fluid system, and the interface of power source outlet pressure sensor is connected with the export pipeline of power source; The output terminal of power source relay is connected with the power source electric wire; The output terminal of No. 1 solenoid relay valve is connected with No. 1 two-position three-way valve electric wire; The output terminal of No. 2 solenoid relay valves is connected with No. 2 two-position three-way valve electric wires; The output terminal of No. 3 solenoid relay valves is connected with No. 3 two-position three-way valve electric wires; The output terminal of No. 4 solenoid relay valves is connected with No. 4 two-position three-way valve electric wires, and the output terminal of No. 5 solenoid relay valves is connected with No. 5 two-position three-way valve electric wires, and the output terminal of No. 6 solenoid relay valves is connected with No. 6 normally closed type 2/2-way valve electric wires; The output terminal of No. 7 solenoid relay valves is connected with No. 7 normally closed type 2/2-way valve electric wires, and the output terminal of No. 8 solenoid relay valves is connected with No. 8 2/2-way valve electric wires open in usual.
No. 1 two-position three-way valve described in the technical scheme, No. 2 two-position three-way valves, No. 3 two-position three-way valves, No. 4 two-position three-way valves are identical with No. 5 two-bit triplet valve arrangements; All adopting model is the two-position three-way valve of WKM08130D-01; No. 6 normally closed type 2/2-way valve is identical with No. 7 normally closed type 2/2-way valve arrangements; All adopting model is the normally closed type 2/2-way valve of WSM06020W-01, and it is the 2/2-way valve open in usual of WSM06020V-01 that No. 8 2/2-way valves open in usual adopt model.No. 1 hydraulic control unit gateway pressure transducer, No. 2 hydraulic control unit gateway pressure transducers are identical with power source outlet pressure sensor structure, and all adopting model is the pressure transducer of PA-21S-80520.3-200.Power source relay, No. 1 solenoid relay valve, No. 2 solenoid relay valves, No. 3 solenoid relay valves, No. 4 solenoid relay valves, No. 5 solenoid relay valves, No. 6 solenoid relay valves, No. 7 solenoid relay valves are identical with No. 8 solenoid relay valve structures, and all adopting model is the relay of MY4NJ; Real-time platform described in the technical scheme is made up of industrial computer and dSPACE real-time emulation system.The dSPACE real-time emulation system comprises that mainly AutoBox, model are the multichannel I/O plate that the processor plate of DS1005, multichannel I/O plate that model is DS2211 and model are DS2202.Model is that the processor plate of DS1005 is that multichannel I/O plate and the model of DS2211 is that the multichannel I/O plate of DS2202 is connected through PHS bus and Autobox, model, and Autobox is connected through netting twine with industrial computer.Model be DS2211 multichannel I/O plate the 1 road to the 9 road D/A passage successively with the hydraulic test module in drive system medium power source relay, No. 1 solenoid relay valve, No. 2 solenoid relay valves, No. 3 solenoid relay valves, No. 4 solenoid relay valves, No. 5 solenoid relay valves, No. 6 solenoid relay valves, No. 7 solenoid relay valves be connected with the input end electric wire of No. 8 solenoid relay valves.Model is that the 1 road to the 9 road A/D passage of the multichannel I/O plate of DS2202 is connected with the output terminal electric wire of power source outlet pressure sensor with preceding revolver pressure transducer, front right wheel pressure transducer, back revolver pressure transducer, rear right wheel pressure transducer, master cylinder ante-chamber pressure transducer, master cylinder back cavity pressure transducer, No. 1 hydraulic control unit gateway pressure transducer, No. 2 hydraulic control unit gateway pressure transducers successively, and model is that the 10 road A/D passage of the multichannel I/O plate of DS2202 is connected with the output terminal electric wire of flow sensor.
Compared with prior art the invention has the beneficial effects as follows:
1. utilizing that hydraulic braking of the present invention topworks is test bed can be to the dynamic response characteristic of hydraulic control unit and studying in great detail of steady-error coefficient characteristic.
2. utilize test bed can the test of hydraulic braking topworks of the present invention to the dynamic response characteristic of electrodynamic pump among the HCU and solenoid valve; Through the testing experiment analysis; Can confirm that pulse-width regulated (Pulse Width Modulation, PWM) control method are adopted in boost control when ICC active hydraulic braking control; Decompression control adopts arteries and veins to regulate (Pulse Frequency Modulation, PFM) control method frequently.
3. utilize that hydraulic braking of the present invention topworks is test bed can to carry out the steady-error coefficient test to pressure charging valve, reduction valve, obtain the valve port coefficient of pressure charging valve and reduction valve, for designing and the independent development hydraulic control unit lays the foundation.
4. utilize the characteristic when hydraulic braking of the present invention topworks is test bed can to adopt PWM control to pressure charging valve under the idle condition to study, and propose analytic expression pressure of wheel braking cylinder estimating algorithm, estimating algorithm can be estimated pressure of wheel braking cylinder accurately.
5. utilizing on the test bed basis that makes an experiment of hydraulic braking topworks of the present invention, can develop the meticulous control method of hydraulic braking force, with the meticulous adjusting of attainment brake hydraulic pressure power.
Description of drawings
Below in conjunction with accompanying drawing the present invention is further described:
Fig. 1 is that the test bed structure of hydraulic braking topworks of the present invention is formed schematic block diagram;
Fig. 2 is that the test bed hydraulic braking topworks structure that adopts of hydraulic braking topworks of the present invention is formed and the principle of work schematic block diagram;
Fig. 3 is the schematic block diagram of power source structure composition, annexation and the principle of work of the hydraulic test module of hydraulic braking of the present invention topworks in test bed;
Fig. 4 is the schematic block diagram that the driving system structure of hydraulic braking of the present invention topworks in test bed formed;
Fig. 5 is the schematic block diagram of the hydraulic test module flow sensor calibration principle of hydraulic braking of the present invention topworks in test bed;
Fig. 6 is the schematic block diagram that the master cylinder of hydraulic braking of the present invention topworks in test bed provides pressure;
Fig. 7 is the schematic block diagram that the power source of hydraulic braking of the present invention topworks in test bed provides pressure;
Fig. 8 is the schematic block diagram of the two-circuit pressure test of hydraulic braking of the present invention topworks in test bed;
Fig. 9 is the schematic block diagram of the single loop pressure test of hydraulic braking of the present invention topworks in test bed.
Among the figure: 1. revolver pressure transducer before; 2. front right wheel pressure transducer, 3. back revolver pressure transducer, 4. rear right wheel pressure transducer; 5. master cylinder ante-chamber pressure transducer; 6. master cylinder back cavity pressure transducer, No. 7.1 hydraulic control unit gateway pressure transducers, No. 8.2 hydraulic control unit gateway pressure transducers, 9. power source outlet pressure sensors.
Embodiment
Below in conjunction with accompanying drawing the present invention is explained in detail:
Consult Fig. 1, it is test bed to the invention provides a kind of hydraulic braking topworks.The topworks that this testing table technical matters to be solved provides is test bed can to carry out dynamic response test and steady-error coefficient test to the hydraulic control unit main element; This testing table hydraulic test module has good portability, can test different brake fluid systems easily.
For solving the problems of the technologies described above, the present invention utilize MATLAB/Simulink and dSPACE (Digital Signal Processing and Control Engineering) real-time emulation system independent development hydraulic braking topworks test bed.This testing table is made up of real-time platform, the ICC Hydraulic braking system hydraulic test module of unifying.
One. real-time platform
The test bed real-time platform of hydraulic braking topworks is made up of industrial computer and dSPACE real-time emulation system.
1. industrial computer
The control program that ControlDesk is installed in the industrial computer and writes with Python.ControlDesk can realize the control of process of the test and management; Can work out test macro control interface; Use this interface; In conjunction with the Matlab program that downloads in the processor plate that model is DS1005, can realize control easily to each solenoid valve and pump motor in HCU and the hydraulic test module, the interface can also show and the storage test related data information simultaneously.It is the industrial computer of 610H that this testing table adopts the model of grinding the production of magnificent company; Its CPU is the double-core E6500 of Intel
3.0GHz, in save as 4G.Industrial computer is connected with Autobox in the dSPACE real-time emulation system through netting twine.
2.dSPACE real-time emulation system
The dSPACE real-time emulation system comprises that mainly AutoBox, model are the multichannel I/O plate that the processor plate of DS1005, multichannel I/O plate that model is DS2211 and model are DS2202.Model is that the processor plate of DS1005, the multichannel I/O plate that model is DS2211, the multichannel I/O plate that model is DS2202 are connected for the PHS bus with AutoBox, and the function of real-time emulation system is: as real-time platform operation test macro control program; Accomplish collection, the output of various signals as the carrier of I/O integrated circuit board.
(1) model is the processor plate of DS1005
Model is that the processor plate of DS1005 is the processor plate with PHS EBI, and it has adopted IBMPowerPC750GX processor, running frequency 1GHz.Multichannel I/O plate and the model that through the realization of PHS bus and Autobox, model is DS2211 is that the communication between the multichannel I/O plate of DS2202 is connected.
(2) model is the multichannel I/O plate of DS2211
Model is that the multichannel I/O plate of DS2211 is the multichannel I/O plate with PHS EBI, and it has 16 tunnel 14 potential differences and divides A/D passage (multipath transmission); 20 tunnel 12 D/A passages (having the independent grounding sense wire); 24 road PWM measurement input (50ns resolution, 0.01Hz～100kHz); 16 way words input (shared) with the PWM input; The output of 16 way words; 20 road PWM output (16 bit resolutions, 0.01Hz～100kHz); 2 road CAN; Serial line interface (RS232, RS422); Signal processing unit (can handle 8 road ignition signals, 8 road fuel injection signals, produce 1 road crankshaft signal, 2 road camshaft signals and 4 road wheel speed or detonation signals) based on angle.Model is multichannel I/O plate outputting power source relay control signal and the solenoid relay valve control signal of DS2211.
(3) model is the multichannel I/O plate of DS2202
Model is that the multichannel I/O plate of DS2202 is the multichannel I/O equipment with PHS EBI, and it has 16 tunnel 14 potential differences and divides A/D passage (multipath transmission); 20 tunnel 12 D/A passages (having the independent grounding sense wire); 24 road PWM measurement input (50ns resolution, 0.01Hz～100kHz); 16 way words input (shared) with the PWM input; The output of 16 way words; 9 road PWM output (16 bit resolutions, 0.01Hz～100kHz); 2 road CAN and serial line interface (RS232, RS422).Model is that the multichannel I/O plate of DS2202 is used to export hydraulic control unit (HCU) driving circuit signal; Gather the flow signal of the pressure signal of brake pressure signal, master cylinder ante-chamber and the master cylinder back cavity of four wheels, No. 1 hydraulic control unit gateway pressure signal, No. 2 hydraulic control unit gateway pressure signals, power source top hole pressure signal and flow sensors.
Consult Fig. 1 and Fig. 4; Exactly; Model be DS2211 multichannel I/O plate the 1 road to the 9 road D/A passage successively with the hydraulic test module in drive system medium power source relay, No. 1 solenoid relay valve, No. 2 solenoid relay valves, No. 3 solenoid relay valves, No. 4 solenoid relay valves, No. 5 solenoid relay valves, No. 6 solenoid relay valves, No. 7 solenoid relay valves be connected outputting power source relay and each solenoid relay valve control signal with the input end electric wire of No. 8 solenoid relay valves.Model is that the 1 road to the 9 road A/D passage of the multichannel I/O plate of DS2202 is connected with the output terminal electric wire of power source outlet pressure sensor 9 with preceding revolver pressure transducer 1, front right wheel pressure transducer 2, back revolver pressure transducer 3, rear right wheel pressure transducer 4, master cylinder ante-chamber pressure transducer 5,7, No. 2 hydraulic control unit gateway pressure transducers 8 of 6, No. 1 hydraulic control unit gateway pressure transducer of master cylinder back cavity pressure transducer successively, gathers the pressure signal of brake pressure signal on four wheels, master cylinder ante-chamber pressure signal, master cylinder back cavity, No. 1 hydraulic control unit gateway pressure signal, No. 2 hydraulic control unit gateway pressure signals and power source top hole pressure signal; Model is that the 10 road A/D passage of the multichannel I/O plate of DS2202 is connected the collection flow signal with the output terminal electric wire of flow sensor.
Two .ICC brake fluid systems
The test bed ICC brake fluid system of hydraulic braking topworks mainly comprises brake pedal; Vacuum booster; Lubricating cup; Master cylinder; RapidPro hardware; ICC is hydraulic braking topworks initiatively; Preceding revolver detent; The front right wheel detent; Back revolver detent; The rear right wheel detent; Preceding revolver pressure transducer 1; Front right wheel pressure transducer 2; Back revolver pressure transducer 3; Rear right wheel pressure transducer 4; Master cylinder ante-chamber pressure transducer 5 and master cylinder back cavity pressure transducer 6.
1.ICC active hydraulic braking topworks
Consult Fig. 2, the ICC during hydraulic braking topworks is test bed initiatively hydraulic braking topworks adopts a kind of four-way hydraulic control unit (HCU).Hydraulic control unit (HCU) is mainly by solenoid valve (comprising: No. 1 isolation valve, No. 2 isolation valves, No. 1 feed liquor valve, No. 2 feed liquor valves, No. 1 pressure charging valve, No. 2 pressure charging valves, No. 3 pressure charging valves, No. 4 pressure charging valves, No. 1 reduction valve, No. 2 reduction valve, No. 3 reduction valve and No. 4 reduction valve); Direct current generator; Electrodynamic pump, low pressure accumulator and a series of retaining valve and valve body are formed.Its principle of work is: during conventional brake; The equal no power of all elements of hydraulic control unit (HCU), brake fluid can be before No. 1 isolation valve, No. 2 isolation valves, No. 1 pressure charging valve, No. 2 pressure charging valves, No. 3 pressure charging valves and No. 4 pressure charging valves get into revolver wheel cylinder, front right wheel wheel cylinder, after revolver wheel cylinder and rear right wheel wheel cylinder brake.Initiatively the overall control law of hydraulic braking topworks is as shown in table 1 for ICC:
Table one ICC hydraulic braking actuating mechanism controls rule
2.RapidPro hardware
Consult Fig. 1, RapidPro hardware comprises that mainly RapidPro unit and model are the RapidPro terminal box of DS1688.The function of RapidPro hardware is for driving solenoid valve and pump motor among the HCU.
Autobox is connected with the LVDS interface electric wire of RapidPro unit; RapidPro unit and model are that the positive I/O terminals electric wire of the RapidPro terminal box of DS1688 is connected, and model is that solenoid valve is connected with the pump motor electric wire among negative I/O terminals and the HCU of RapidPro terminal box of DS1688.
3. pressure transducer
Consult Fig. 1, cavity pressure behind cavity pressure and the master cylinder before revolver wheel cylinder brake pressure, front right wheel wheel cylinder brake pressure, back revolver wheel cylinder brake pressure, rear right wheel wheel cylinder brake pressure, the master cylinder before the ICC brake fluid system during hydraulic braking of the present invention topworks is test bed has adopted preceding revolver pressure transducer 1, front right wheel pressure transducer 2, back revolver pressure transducer 3, rear right wheel pressure transducer 4, master cylinder ante-chamber pressure transducer 5 to be used for measuring in the ICC brake fluid system respectively with master cylinder back cavity pressure transducer 6.The preceding revolver pressure transducer 1 of the test bed employing of hydraulic braking topworks of the present invention, front right wheel pressure transducer 2, back revolver pressure transducer 3, rear right wheel pressure transducer 4, master cylinder ante-chamber pressure transducer 5 are the pressure transducer of PA-21S-80520.3-200 with the model that master cylinder back cavity pressure transducer 6 is the production of Switzerland Keller company; Its range is 0-20MPa; The output signal is the current signal of 4～20mA; Through the smart power transformation resistance of 250 Ω that connect; Can the current signal of pressure transducer output be converted into the normal voltage signal of 1-5V, supply voltage is the 8-28V DC voltage, greatest requirements electric current 25mA; Loaded impedance R Ω=(U-8V)/0.02A, precision can reach 0.5%.Pressure transducer is installed between the brake piping of brake fluid system through threeway.
Three. the hydraulic test module
Normally closed type 2/2-way valve and drive system that the 2/2-way valve open in usual that the two-position three-way valve that the pressure transducer that the test bed hydraulic test module of hydraulic braking topworks is PA-21S-80520.3-200 by power source, flow sensor, 3 models, 5 models are WKM08130D-01,1 model are WSM06020V-01,2 models are WSM06020W-01 are formed.
1. power source
Consult Fig. 3, power source is used for for the ICC brake fluid system brake fluid being provided.The model that adopts Yi Dehaipu (Hydr-app S.p.a.) company to produce among the present invention is the power source of MC2-T-V3B-S8-R0-PL-MN5-T03-F1.Its parameter of electric machine is 220V AC, 50Hz, 1.1-1.5kw; The pump parameter is 2.6 milliliters of flows/commentaries on classics, 6L/min (pressure 8MPa); The surplus valve parameter be handwheel range of regulation 50-210ba r, adjustable overflow 2-4 liter/minute; Volume of fuel tank is 3 liters; The electromagnet supply voltage is 220V AC.
2. solenoid valve
Consult Fig. 1, solenoid valve be used for controlling with test I CC brake fluid system in the ICC a certain road pressure of hydraulic braking topworks initiatively.The present invention adopts solenoid valve to comprise two-position three-way valve and 2/2-way valve.
(1) two-position three-way valve
The model that adopts German He Deke (HYDAC) company to produce among the present invention is the two-position three-way valve of WKM08130D-01, and its supply voltage is 24V DC.This testing table has adopted 5 two-position three-way valves, i.e. No. 1 two-position three-way valve, No. 2 two-position three-way valves, No. 3 two-position three-way valves, No. 4 two-position three-way valves and No. 5 two-position three-way valves.
(2) 2/2-way valve
The model that adopts German He Deke (HYDAC) company to produce among the present invention is the 2/2-way valve open in usual of WSM06020V-01 and the normally closed type 2/2-way valve that model is WSM06020W-01, and its supply voltage is 24V DC.This testing table has adopted 2 normally closed type 2/2-way valves i.e. No. 6 normally closed type 2/2-way valves and No. 7 normally closed type 2/2-way valves, and 1 2/2-way valve open in usual is No. 8 2/2-way valves open in usual.
Exactly; Separately No. 1 interface is closed when No. 1 two-position three-way valve, No. 2 two-position three-way valves, No. 3 two-position three-way valves, No. 4 two-position three-way valves and No. 5 two-position three-way valves energisings; No. 2 interface communicates with No. 3 interfaces, and No. 3 interfaces are closed during outage, and No. 1 interface communicates with No. 2 interfaces; No. 1 interface communicated with No. 2 interfaces when No. 6 normally closed type 2/2-way valves were switched on No. 7 normally closed type 2/2-way valves, and No. 1 interface and No. 2 interfaces are closed during outage; No. 1 interface and No. 2 interfaces were closed when No. 8 2/2-way valve open in usual was switched on, and No. 1 interface communicates with No. 2 interfaces during outage.
No. 1 interface of No. 1 two-position three-way valve is connected through fluid pressure line with the master cylinder ante-chamber, and No. 2 interface is connected through fluid pressure line with No. 1 interface of No. 3 two-position three-way valves, and No. 3 interface is connected through fluid pressure line with the power source inlet; No. 1 interface of No. 2 two-position three-way valves is connected through fluid pressure line with the master cylinder back cavity, and No. 2 interface is connected through fluid pressure line with No. 2 interfaces of No. 4 two-position three-way valves, and No. 3 interface is connected through fluid pressure line with the power source outlet; No. 2 interfaces of No. 3 two-position three-way valves are connected through fluid pressure line with No. 2 interfaces of No. 5 two-position three-way valves, and No. 3 interface is connected through fluid pressure line with the outlet of power source; No. 1 interface of No. 4 two-position three-way valves is connected through fluid pressure line with No. 2 interfaces of No. 8 2/2-way valves open in usual, and No. 3 interfaces of No. 4 two-position three-way valves are connected through fluid pressure line with the flow sensor inlet; No. 1 interface of No. 5 two-position three-way valves is connected through fluid pressure line with the gateway of No. 1 hydraulic control unit, and No. 3 interface is connected through fluid pressure line with the flow sensor inlet; No. 1 interface of No. 6 normally closed type 2/2-way valves is connected through fluid pressure line with No. 2 interfaces of No. 8 2/2-way valves open in usual, and No. 2 interfaces of No. 6 normally closed type 2/2-way valves are connected through fluid pressure line with the flow sensor outlet; No. 1 interface of No. 7 normally closed type 2/2-way valves is connected through fluid pressure line with the gateway of No. 1 hydraulic control unit, and No. 2 interface is connected through fluid pressure line with the flow sensor outlet; No. 1 interface of No. 8 2/2-way valves open in usual is connected through fluid pressure line with the gateway of No. 2 hydraulic control units.
3. pressure transducer
Consult Fig. 1; No. 1 hydraulic control unit gateway pressure transducer 7 and No. 2 hydraulic control unit gateway pressure transducers 8 are to be used for measuring No. 1 hydraulic control unit gateway pressure and No. 2 hydraulic control unit gateway pressure, and power source outlet pressure sensor 9 is used for measuring the power source top hole pressure.7, No. 2 hydraulic control unit gateway pressure transducers of No. 1 hydraulic control unit inlet pressure transducer 8 are the pressure transducer of PA-21S-80520.3-200 with the model that power source outlet pressure sensor 9 also adopts Switzerland Keller company to produce; Its range is 0-20MPa; The output signal is the current signal of 4～20mA, through the smart power transformation resistance of 250 Ω that connect, can the current signal of pressure transducer output be converted into the normal voltage signal of 1-5V; Supply voltage is the 8-28V DC voltage; Greatest requirements electric current 25mA, loaded impedance R Ω=(U-8V)/and 0.02A, precision can reach 0.5%.7, No. 2 hydraulic control unit gateway pressure transducers 8 of No. 1 hydraulic control unit gateway pressure transducer and power source outlet pressure sensor 9 are installed between the fluid pressure line of hydraulic test module through threeway.
4. flow sensor
Consult Fig. 1, flow sensor is used for measuring the flow of brake fluid in the fluid pressure line.The test macro that flow sensor among the present invention adopts German Lei Aonike (RHEONIK) to produce.This system is made up of the sensor that the model transmitter that is RHE01 and model are RHM03, and its power supply is 24V DC; Pulse is 10000/kg; Output frequency is 41.6666Hz-833.333Hz; Corresponding flow range is 0.25kg/min-5kg/min.Error precision is 0.1%, and can bear maximum pressure is 300bar.Flow sensor is installed between No. 4 two-position three-way valves, No. 5 two-position three-way valves, No. 6 normally closed type 2/2-way valves and No. 7 normally closed type 2/2-way valves, is provided with 1 flow sensor during hydraulic braking of the present invention topworks is test bed.
5. drive system
Consult Fig. 1 and Fig. 4, drive system is made up of power source relay, No. 1 solenoid relay valve, No. 2 solenoid relay valves, No. 3 solenoid relay valves, No. 4 solenoid relay valves, No. 5 solenoid relay valves, No. 6 solenoid relay valves, No. 7 solenoid relay valves and No. 8 solenoid relay valves.Can carry out switch control to power source through the power source relay; Through No. 1 two-position three-way valve, No. 2 two-position three-way valves, No. 3 two-position three-way valves, No. 4 two-position three-way valves, No. 5 two-position three-way valves, No. 6 normally closed type 2/2-way valves, No. 7 normally closed type 2/2-way valves and No. 8 2/2-way valves open in usual in No. 1 solenoid relay valve, No. 2 solenoid relay valves, No. 3 solenoid relay valves, No. 4 solenoid relay valves, No. 5 solenoid relay valves, No. 6 solenoid relay valves, No. 7 solenoid relay valves and No. 8 solenoid relay valve may command hydraulic test modules, realize the control of brake fluid direction.The model that power source relay during hydraulic braking of the present invention topworks is test bed, No. 1 solenoid relay valve, No. 2 solenoid relay valves, No. 3 solenoid relay valves, No. 4 solenoid relay valves, No. 5 solenoid relay valves, No. 6 solenoid relay valves, No. 7 solenoid relay valves and No. 8 solenoid relay valves all adopt Omron (OMRON) to produce is the relay of MY4NJ; Its contact load is 5A 240V; 5A28VDC, rated current is 5A.Relay base is fixed on the testing table through guide rail.The output terminal of power source relay is connected with the power source electric wire; No. 1 the solenoid relay valve output terminal is connected with No. 1 two-position three-way valve electric wire; No. 2 the solenoid relay valve output terminal is connected with No. 2 two-position three-way valve electric wires; No. 3 the solenoid relay valve output terminal is connected with No. 3 two-position three-way valve electric wires; No. 4 the solenoid relay valve output terminal is connected with No. 4 two-position three-way valve electric wires; No. 5 the solenoid relay valve output terminal is connected with No. 5 two-position three-way valve electric wires; No. 6 the solenoid relay valve output terminal is connected with No. 6 normally closed type 2/2-way valve electric wires; No. 7 the solenoid relay valve output terminal is connected with No. 7 normally closed type 2/2-way valve electric wires; No. 8 the solenoid relay valve output terminal is connected with No. 8 2/2-way valve electric wires open in usual.
Exactly, the test bed hydraulic test module of hydraulic braking topworks is made up of power source, 7, No. 2 hydraulic control unit gateway pressure transducers 8 of No. 1 hydraulic control unit gateway pressure transducer, 9, No. 1 two-position three-way valve of power source outlet pressure sensor, No. 2 two-position three-way valves, No. 3 two-position three-way valves, No. 4 two-position three-way valves, No. 5 two-position three-way valves, No. 6 normally closed type 2/2-way valves, No. 7 normally closed type 2/2-way valves, No. 8 2/2-way valves open in usual, flow sensor and drive systems (power source relay, No. 1 solenoid relay valve, No. 2 solenoid relay valves, No. 3 solenoid relay valves, No. 4 solenoid relay valves, No. 5 solenoid relay valves, No. 6 solenoid relay valves, No. 7 solenoid relay valves and No. 8 solenoid relay valves).
No. 3 interfaces of the outlet of power source and No. 3 two-position three-way valves are connected with No. 3 interface pipelines of No. 2 two-position three-way valves; No. 2 interfaces of No. 3 two-position three-way valves are connected with No. 2 interface pipelines of No. 5 two-position three-way valves, and the interface of No. 1 interface of No. 5 two-position three-way valves and No. 1 interface of No. 7 normally closed type 2/2-way valves, No. 1 hydraulic control unit gateway pressure transducer 7 is connected with No. 1 hydraulic control unit gateway pipeline in the I CC brake fluid system; No. 2 interfaces of No. 2 two-position three-way valves are connected with No. 2 interface pipelines of No. 4 two-position three-way valves; No. 1 interface of No. 1 interface of No. 4 two-position three-way valves and No. 6 normally closed type 2/2-way valves is connected with No. 2 interface pipelines of No. 8 2/2-way valves open in usual, and No. 1 interface of No. 8 2/2-way valves open in usual and the interface of No. 2 hydraulic control unit gateway pressure transducers 8 are connected with No. 2 hydraulic control unit gateway pipelines in the I CC brake fluid system; No. 3 interfaces of No. 5 two-position three-way valves and No. 4 two-position three-way valves and the entrance pipe of flow sensor are connected, and No. 2 interfaces of No. 6 normally closed type 2/2-way valves and No. 7 normally closed type 2/2-way valves and the export pipeline of flow sensor are connected; No. 3 interface pipelines of the inlet of power source and No. 1 two-position three-way valve are connected; No. 2 interfaces of No. 1 two-position three-way valve are connected with No. 1 interface pipeline of No. 3 two-position three-way valves; No. 1 interface of No. 1 two-position three-way valve is connected with the ante-chamber channel of master cylinder with the master cylinder ante-chamber pressure transducer 5 in the ICC brake fluid system; No. 1 interface of No. 2 two-position three-way valves is connected with master cylinder back cavity pipeline with the master cylinder back cavity pressure transducer 6 in the ICC brake fluid system, and the interface of power source outlet pressure sensor 9 is connected with the export pipeline of power source; The output terminal of power source relay is connected with the power source electric wire; No. 1 the solenoid relay valve output terminal is connected with No. 1 two-position three-way valve electric wire; No. 2 the solenoid relay valve output terminal is connected with No. 2 two-position three-way valve electric wires; No. 3 the solenoid relay valve output terminal is connected with No. 3 two-position three-way valve electric wires; No. 4 the solenoid relay valve output terminal is connected with No. 4 two-position three-way valve electric wires, and No. 5 the solenoid relay valve output terminal is connected with No. 5 two-position three-way valve electric wires, and No. 6 the solenoid relay valve output terminal is connected with No. 6 normally closed type 2/2-way valve electric wires; No. 7 the solenoid relay valve output terminal is connected with No. 7 normally closed type 2/2-way valve electric wires, and No. 8 the solenoid relay valve output terminal is connected with No. 8 2/2-way valve electric wires open in usual.Drive system is connected with dSPACE real-time emulation system electric wire in the real-time platform.
The principle of work that hydraulic braking topworks is test bed:
Consulting Fig. 5, is the flow sensor calibration principle schematic block diagram of the test bed middle hydraulic test module of hydraulic braking topworks of the present invention among the figure.At first need the calibrational capacity sensor before the test; With No. 1 two-position three-way valve, No. 2 two-position three-way valves, No. 5 two-position three-way valves, No. 6 2/2-way valves, No. 8 2/2-way valve energisings; Open power source subsequently; Promptly two-position three-way valve → No. 4 two-position three-way valve → No. 6 2/2-way valve → flow sensor → No. 5 two-position three-way valve → No. 3 two-position three-way valve → No. 1 two-position three-way valves flow back to the power source inlet to brake fluid through No. 2 by power source outlet; After treating flow sensor stable reading a period of time, can carry out hydraulic control unit (HCU) test.
Consult Fig. 6; It among the figure schematic block diagram that the test bed middle master cylinder of hydraulic braking topworks of the present invention provides pressure; When No. 1 two-position three-way valve in the hydraulic test module, No. 2 two-position three-way valves, No. 3 two-position three-way valves, No. 4 two-position three-way valves, No. 5 two-position three-way valves, No. 6 normally closed type 2/2-way valves, No. 7 normally closed type 2/2-way valves and No. 8 equal no powers of 2/2-way valve open in usual; Brake fluid gets into hydraulic control unit (HCU) by master cylinder through two loops of hydraulic test module (loop: brake fluid is through No. 1 two-position three-way valve → No. 3 two-position three-way valve → No. 5 two-position three-way valves, and another loop: brake fluid is through No. 2 two-position three-way valve → No. 4 two-position three-way valve → No. 8 2/2-way valves open in usual).
Consult Fig. 7; It among the figure schematic block diagram that hydraulic braking topworks of the present invention test bed medium power source provides pressure; When No. 2 two-position three-way valves and No. 3 two-position three-way valve energisings; Brake fluid gets into hydraulic control unit (HCU) by two loops through the hydraulic test module of power source outlet (loop: brake fluid is through No. 3 two-position three-way valve → No. 5 two-position three-way valves, and another loop: brake fluid is through No. 2 two-position three-way valve → No. 4 two-position three-way valve → No. 8 2/2-way valves open in usual).
Consulting Fig. 8, is the schematic block diagram of the test bed middle hydraulic test module two-circuit pressure test principle of hydraulic braking topworks of the present invention among the figure.When No. 4 two-position three-way valves, No. 5 two-position three-way valves, No. 6 normally closed type 2/2-way valves and No. 7 normally closed type 2/2-way valves are all switched on; Brake fluid is provided by master cylinder or power source;, a loop: brake fluid is flowed out after No. 5 two-position three-way valve → flow sensor → No. 7 normally closed type 2/2-way valve flows are gone into hydraulic control unit (HCU), another loop by No. 3 two-position three-way valves: brake fluid is flowed out after No. 4 two-position three-way valve → flow sensor → No. 6 normally closed type 2/2-way valve → No. 8 2/2-way valve flow open in usual is gone into hydraulic control unit (HCU) by No. 2 two-position three-way valves.Like this, the brake fluid in two loops all passes through flow sensor.
Consulting Fig. 9, is the test bed middle one-sided circuit pressure test philosophy of the hydraulic test module schematic block diagram of hydraulic braking topworks of the present invention among the figure.When No. 4 two-position three-way valves, No. 6 normally closed type 2/2-way valves or No. 5 two-position three-way valves, No. 7 normally closed type 2/2-way valve energisings, can measure one-sided loop flow, and opposite side loop brake fluid flows directly into hydraulic control unit (HCU) without flow sensor.When shown in the figure being No. 5 two-position three-way valves, No. 7 normally closed type 2/2-way valves energisings, two-position three-way valve → No. 5 two-position three-way valve → flow sensor → No. 7 normally closed type 2/2-way valve flow is gone into hydraulic control unit (HCU) to the brake fluid in the side loop by No. 3; Two-position three-way valve → No. 4 two-position three-way valve → No. 8 2/2-way valve flow open in usual is gone into hydraulic control unit (HCU) to brake fluid in the opposite side loop by No. 2.Principle is identical when No. 4 two-position three-way valves, No. 6 normally closed type 2/2-way valve energisings, repeats no more.Like this, can use a flow sensor attainment brake hydraulic pressure system testing function.
Claims (3)
1. a hydraulic braking topworks is test bed; Form by real-time platform, I CC brake fluid system and hydraulic test module; It is characterized in that described hydraulic test module is made up of power source, No. 1 hydraulic control unit gateway pressure transducer (7), No. 2 hydraulic control unit gateway pressure transducers (8), power source outlet pressure sensor (9), No. 1 two-position three-way valve, No. 2 two-position three-way valves, No. 3 two-position three-way valves, No. 4 two-position three-way valves, No. 5 two-position three-way valves, No. 6 normally closed type 2/2-way valves, No. 7 normally closed type 2/2-way valves, No. 8 2/2-way valves open in usual, flow sensor, power source relay, No. 1 solenoid relay valve, No. 2 solenoid relay valves, No. 3 solenoid relay valves, No. 4 solenoid relay valves, No. 5 solenoid relay valves, No. 6 solenoid relay valves, No. 7 solenoid relay valves and No. 8 solenoid relay valves;
No. 3 interfaces of the outlet of power source and No. 3 two-position three-way valves are connected with No. 3 interface pipelines of No. 2 two-position three-way valves; No. 2 interfaces of No. 3 two-position three-way valves are connected with No. 2 interface pipelines of No. 5 two-position three-way valves, and the interface of No. 1 interface of No. 5 two-position three-way valves and No. 1 interface of No. 7 normally closed type 2/2-way valves, No. 1 hydraulic control unit gateway pressure transducer (7) is connected with No. 1 hydraulic control unit gateway pipeline in the I CC brake fluid system; No. 2 interfaces of No. 2 two-position three-way valves are connected with No. 2 interface pipelines of No. 4 two-position three-way valves; No. 1 interface of No. 1 interface of No. 4 two-position three-way valves and No. 6 normally closed type 2/2-way valves is connected with No. 2 interface pipelines of No. 8 2/2-way valves open in usual, and No. 1 interface of No. 8 2/2-way valves open in usual and the interface of No. 2 hydraulic control unit gateway pressure transducers (8) are connected with No. 2 hydraulic control unit gateway pipelines in the I CC brake fluid system; No. 3 interfaces of No. 5 two-position three-way valves and No. 4 two-position three-way valves and the entrance pipe of flow sensor are connected, and No. 2 interfaces of No. 6 normally closed type 2/2-way valves and No. 7 normally closed type 2/2-way valves and the export pipeline of flow sensor are connected; No. 3 interface pipelines of the inlet of power source and No. 1 two-position three-way valve are connected; No. 2 interfaces of No. 1 two-position three-way valve are connected with No. 1 interface pipeline of No. 3 two-position three-way valves; The ante-chamber channel of the master cylinder in No. 1 interface of No. 1 two-position three-way valve and the I CC brake fluid system is connected; No. 1 interface of No. 2 two-position three-way valves is connected with the master cylinder back cavity pipeline in the I CC brake fluid system, and the interface of power source outlet pressure sensor (9) is connected with the export pipeline of power source; The output terminal of power source relay is connected with the power source electric wire; No. 1 the solenoid relay valve output terminal is connected with No. 1 two-position three-way valve electric wire; No. 2 the solenoid relay valve output terminal is connected with No. 2 two-position three-way valve electric wires; No. 3 the solenoid relay valve output terminal is connected with No. 3 two-position three-way valve electric wires; No. 4 the solenoid relay valve output terminal is connected with No. 4 two-position three-way valve electric wires, and No. 5 the solenoid relay valve output terminal is connected with No. 5 two-position three-way valve electric wires, and No. 6 the solenoid relay valve output terminal is connected with No. 6 normally closed type 2/2-way valve electric wires; No. 7 the solenoid relay valve output terminal is connected with No. 7 normally closed type 2/2-way valve electric wires, and No. 8 the solenoid relay valve output terminal is connected with No. 8 2/2-way valve electric wires open in usual.
2. test bed according to the described hydraulic braking of claim 1 topworks; It is characterized in that; Described No. 1 two-position three-way valve, No. 2 two-position three-way valves, No. 3 two-position three-way valves, No. 4 two-position three-way valves are identical with No. 5 two-bit triplet valve arrangements; All adopting model is the two-position three-way valve of WKM08130D-01; No. 6 normally closed type 2/2-way valve is identical with No. 7 normally closed type 2/2-way valve arrangements, and all adopting model is the normally closed type 2/2-way valve of WSM06020W-01, and it is the 2/2-way valve open in usual of WSM06020V-01 that No. 8 2/2-way valves open in usual adopt model;
No. 1 hydraulic control unit gateway pressure transducer (7), No. 2 hydraulic control unit gateway pressure transducers (8) are identical with power source outlet pressure sensor (9) structure, and all adopting model is the pressure transducer of PA-21S-80520.3-200;
Power source relay, No. 1 solenoid relay valve, No. 2 solenoid relay valves, No. 3 solenoid relay valves, No. 4 solenoid relay valves, No. 5 solenoid relay valves, No. 6 solenoid relay valves, No. 7 solenoid relay valves are identical with No. 8 solenoid relay valve structures, and all adopting model is the relay of MY4NJ.
3. test bed according to the described hydraulic braking of claim 1 topworks, it is characterized in that described real-time platform is made up of industrial computer and dSPACE real-time emulation system;
The dSPACE real-time emulation system comprises that mainly AutoBox, model are the multichannel I/O plate that the processor plate of DS1005, multichannel I/O plate that model is DS2211 and model are DS2202;
Model is that the processor plate of DS1005 is that multichannel I/O plate and the model of DS2211 is that the multichannel I/O plate of DS2202 is connected through PHS bus and Autobox, model, and Autobox is connected through netting twine with industrial computer;
Model be DS2211 multichannel I/O plate the 1 road to the 9 road D/A passage successively with the hydraulic test module in drive system medium power source relay, No. 1 solenoid relay valve, No. 2 solenoid relay valves, No. 3 solenoid relay valves, No. 4 solenoid relay valves, No. 5 solenoid relay valves, No. 6 solenoid relay valves, No. 7 solenoid relay valves be connected with the input end electric wire of No. 8 solenoid relay valves;
Model is that the 1 road to the 9 road A/D passage of the multichannel I/O plate of DS2202 is connected with the output terminal electric wire of power source outlet pressure sensor (9) with preceding revolver pressure transducer (1), front right wheel pressure transducer (2), back revolver pressure transducer (3), rear right wheel pressure transducer (4), master cylinder ante-chamber pressure transducer (5), master cylinder back cavity pressure transducer (6), No. 1 hydraulic control unit gateway pressure transducer (7), No. 2 hydraulic control unit gateway pressure transducers (8) successively, and model is that the 10 road A/D passage of the multichannel I/O plate of DS2202 is connected with the output terminal electric wire of flow sensor.
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Cited By (8)
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| CN103115763A (en) * | 2013-01-22 | 2013-05-22 | 杭州沃镭科技有限公司 | Automobile brake master cylinder performance testing device |
| CN103588036A (en) * | 2013-10-14 | 2014-02-19 | 柳州欧维姆机械股份有限公司 | Pay-off reel speed auto-control device and pay-off system with same |
| CN105181355A (en) * | 2015-10-08 | 2015-12-23 | 南阳理工学院 | Multifunctional testing device of air brake system of tractor transportation unit |
| CN105353645A (en) * | 2015-10-13 | 2016-02-24 | 哈尔滨东安汽车发动机制造有限公司 | Solenoid valve testing device and method |
| CN106194702A (en) * | 2016-10-09 | 2016-12-07 | 吉林大学 | New-energy automobile electric vacuum pump test systems test bed |
| CN106969920A (en) * | 2017-02-27 | 2017-07-21 | 吉林大学 | Line of vehicles control hydraulic braking system hardware is the-loop test bed |
| CN107831757A (en) * | 2017-11-29 | 2018-03-23 | 合肥巨动力系统有限公司 | Based on dSPACE motor control hardware in ring automatization test system and method |
| WO2021073644A1 (en) * | 2019-10-17 | 2021-04-22 | 浙江亚太机电股份有限公司 | Integrated braking system inspection platform and test method |
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| CN202485919U (en) * | 2012-03-16 | 2012-10-10 | 吉林大学 | Test bed for hydraulic brake actuating mechanism |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103115763B (en) * | 2013-01-22 | 2014-12-17 | 杭州沃镭科技有限公司 | Automobile brake master cylinder performance testing device |
| CN103115763A (en) * | 2013-01-22 | 2013-05-22 | 杭州沃镭科技有限公司 | Automobile brake master cylinder performance testing device |
| CN103588036A (en) * | 2013-10-14 | 2014-02-19 | 柳州欧维姆机械股份有限公司 | Pay-off reel speed auto-control device and pay-off system with same |
| CN103588036B (en) * | 2013-10-14 | 2016-06-29 | 柳州欧维姆机械股份有限公司 | A kind of method of draw drum speed controlling |
| CN105181355A (en) * | 2015-10-08 | 2015-12-23 | 南阳理工学院 | Multifunctional testing device of air brake system of tractor transportation unit |
| CN105353645B (en) * | 2015-10-13 | 2018-01-30 | 哈尔滨东安汽车发动机制造有限公司 | A kind of pilot solenoid valve device and test method |
| CN105353645A (en) * | 2015-10-13 | 2016-02-24 | 哈尔滨东安汽车发动机制造有限公司 | Solenoid valve testing device and method |
| CN106194702A (en) * | 2016-10-09 | 2016-12-07 | 吉林大学 | New-energy automobile electric vacuum pump test systems test bed |
| CN106194702B (en) * | 2016-10-09 | 2018-05-29 | 吉林大学 | New-energy automobile electric vacuum pump tests systems test bed |
| CN106969920A (en) * | 2017-02-27 | 2017-07-21 | 吉林大学 | Line of vehicles control hydraulic braking system hardware is the-loop test bed |
| CN106969920B (en) * | 2017-02-27 | 2018-03-02 | 吉林大学 | Line of vehicles control hydraulic braking system hardware is the-loop test bed |
| CN107831757A (en) * | 2017-11-29 | 2018-03-23 | 合肥巨动力系统有限公司 | Based on dSPACE motor control hardware in ring automatization test system and method |
| WO2021073644A1 (en) * | 2019-10-17 | 2021-04-22 | 浙江亚太机电股份有限公司 | Integrated braking system inspection platform and test method |
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