CN104937286A - Plausibility checking method - Google Patents

Plausibility checking method Download PDF

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Publication number
CN104937286A
CN104937286A CN201380070946.9A CN201380070946A CN104937286A CN 104937286 A CN104937286 A CN 104937286A CN 201380070946 A CN201380070946 A CN 201380070946A CN 104937286 A CN104937286 A CN 104937286A
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drive device
test method
type secondary
secondary drive
hydraulic type
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CN104937286B (en
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A·西门子
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Robert Bosch GmbH
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Robert Bosch GmbH
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/08—Prime-movers comprising combustion engines and mechanical or fluid energy storing means
    • B60K6/12—Prime-movers comprising combustion engines and mechanical or fluid energy storing means by means of a chargeable fluidic accumulator
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W20/00—Control systems specially adapted for hybrid vehicles
    • B60W20/50—Control strategies for responding to system failures, e.g. for fault diagnosis, failsafe operation or limp mode
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
    • B60W50/02—Ensuring safety in case of control system failures, e.g. by diagnosing, circumventing or fixing failures
    • B60W50/0205—Diagnosing or detecting failures; Failure detection models
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for
    • F15B19/005—Fault detection or monitoring
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
    • B60W50/02—Ensuring safety in case of control system failures, e.g. by diagnosing, circumventing or fixing failures
    • B60W50/0205—Diagnosing or detecting failures; Failure detection models
    • B60W2050/0215—Sensor drifts or sensor failures
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2510/00—Input parameters relating to a particular sub-units
    • B60W2510/06—Combustion engines, Gas turbines
    • B60W2510/0666—Engine power
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2510/00—Input parameters relating to a particular sub-units
    • B60W2510/09—Other types of propulsion units, e.g. fluid motors, or type not specified
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2510/00—Input parameters relating to a particular sub-units
    • B60W2510/10—Change speed gearings
    • B60W2510/1035—Input power
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2510/00—Input parameters relating to a particular sub-units
    • B60W2510/10—Change speed gearings
    • B60W2510/1075—Change speed gearings fluid pressure, e.g. oil pressure
    • B60W2510/1085—Change speed gearings fluid pressure, e.g. oil pressure pressure of working fluid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2510/00—Input parameters relating to a particular sub-units
    • B60W2510/30—Auxiliary equipments
    • B60W2510/305—Power absorbed by auxiliaries
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2306/00—Other features of vehicle sub-units
    • B60Y2306/15—Failure diagnostics
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2201/00—Accumulators
    • F15B2201/50—Monitoring, detection and testing means for accumulators
    • F15B2201/51—Pressure detection
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205—Systems with pumps
    • F15B2211/20507—Type of prime mover
    • F15B2211/20523—Internal combustion engine
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205—Systems with pumps
    • F15B2211/2053—Type of pump
    • F15B2211/20546—Type of pump variable capacity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205—Systems with pumps
    • F15B2211/2053—Type of pump
    • F15B2211/20569—Type of pump capable of working as pump and motor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/21—Systems with pressure sources other than pumps, e.g. with a pyrotechnical charge
    • F15B2211/212—Systems with pressure sources other than pumps, e.g. with a pyrotechnical charge the pressure sources being accumulators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/63—Electronic controllers
    • F15B2211/6303—Electronic controllers using input signals
    • F15B2211/6306—Electronic controllers using input signals representing a pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/80—Other types of control related to particular problems or conditions
    • F15B2211/88—Control measures for saving energy
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/62—Hybrid vehicles

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Transportation (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • General Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Human Computer Interaction (AREA)
  • Control Of Transmission Device (AREA)
  • Examining Or Testing Airtightness (AREA)
  • Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)

Abstract

The invention relates to a plausibility checking method for checking the plausibility of pressure values that are measured by means of a sensor device (32, 33) in a hydraulic system, which comprises a primary drive (11) and a hydraulic secondary drive (12), which is drivingly connected to the primary drive (11). In order to create a plausibility checking method that can be checked simply and economically, a power P0 of the primary drive (11) and a power P1 of the hydraulic secondary drive (12) are determined and used to check the plausibility of hydraulic pressure values measured by the sensor device (32, 33) at an outlet of the hydraulic secondary drive (12).

Description

Credence test method
Technical field
The present invention relates to a kind of Credence test method for inspection pressure value confidence level, described force value utilizes the sensor device in hydraulic system to detect, described hydraulic system comprises elementary drive unit and hydraulic type secondary drive device, and described hydraulic type secondary drive device is connected with described elementary drive unit in driving.In addition, the present invention relates to a kind of computer program with computer program, when described computer program runs on computers, described computer program has the software service for carrying out described Credence test method.In addition, the present invention relates to a kind of fluid pressure drive device with hydraulic system, in described hydraulic system, carry out described Credence test method.
Background technique
In hydraulic system, play an important role in the viewpoint of regulation technology, control technique and/or monitoring technology, need to know pressure.Described pressure such as can utilize pressure transducer to detect.In order to identify and run vital deviation, sensor fault or less desirable skew, need to carry out Credence test to the force value utilizing pressure transducer to detect.
Summary of the invention
The object of the invention is to, propose a kind of Credence test method, utilize described Credence test method can the confidence level of simply and inexpensively inspection pressure value, described force value utilizes the hydraulic sensing device in hydraulic system to detect.Hydraulic system comprises elementary drive unit and hydraulic type secondary drive device, and described hydraulic type secondary drive device is connected with elementary drive unit in driving.
In a kind of Credence test method for inspection pressure value confidence level, described force value utilizes the sensor device in hydraulic system to detect, described hydraulic system comprises elementary drive unit and hydraulic type secondary drive device, described hydraulic type secondary drive device is connected with elementary drive unit according to the mode driven, this object is realized by following manner in described Credence test method, namely the power P 0 of elementary drive unit and the power P 1 of secondary drive device are tried to achieve and are used, to check the confidence level of the force value detected by sensor device on the output terminal of hydraulic type secondary drive device.Hydraulic type secondary drive device is the hydraulic press with pumping function and motor function.Hydraulic press such as can be configured to axial piston machine.Show within the scope of the invention, the force value detected with sensor device, such as pressure transducer can be checked by the power of elementary drive unit and the power of hydraulic type secondary drive device simply and inexpensively.By Credence test method of the present invention in a straightforward manner with method by means of the power-balance on hydraulic type secondary drive device or balance significantly simplify be applied to hydraulic type secondary drive device, the determining continuously of the pressure particularly had on output terminal, the particularly high pressure side of the hydraulic press of pumping function.Therefore, the pressure transducer that redundancy required in other cases can be cancelled or the signal Credence test more expended.
The feature of a preferred embodiment of Credence test method is, the power P 1 of secondary drive device calculates according to the power P 0 exported by elementary drive unit when considering loss.Additionally do not have power at transmission device place of branch at those or only have in the operation point of known power drain, the power P 1 of secondary drive device can be known from the output power P0 of elementary drive unit when considering loss, particularly transmission device loss and/or engaging and disengaging gear loss or try to achieve.
The feature of the preferred embodiment that of Credence test method is other is, the described power P 0 exported by elementary drive unit is tried to achieve from known Operational Limits.Known Operational Limits is such as the parameter of emitted dose, air parameter, rotating speed and this class.Power P 0 and if desired power P 1 can try to achieve or calculate in the control unit of interior of motor vehicles.
The feature of the preferred embodiment that of Credence test method is other is, the effective torque M1 of described hydraulic type secondary drive device tries to achieve by means of following equation (1):
M1＝P1/n1＝P0/n1＝M0*n0/n1 (1)。
At this, n0 represents the rotating speed of elementary drive unit.N1 represents the rotating speed of hydraulic type secondary drive device.M0 represents the moment of torsion from the deduction loss exported by elementary drive unit.
The feature of the preferred embodiment that of Credence test method is other is, the constant degree of regulation vg for hydraulic type secondary drive device between the moment of torsion M1 and the hydraulic pressure difference dp on hydraulic type secondary drive device of described hydraulic type secondary drive device has strong almost linear relation.The degree of regulation vg of hydraulic type secondary drive device is such as the angle of oscillation of hydraulic press, the particularly axial piston machine with pumping function and motor function.Degree of regulation vg can be measured in hydraulic press runs.Hydraulic pressure difference dp is the pressure difference between the output terminal of hydraulic type secondary drive device and input end.Pressure on the output terminal of hydraulic type secondary drive device is also referred to as high pressure.Similarly, the pressure on the input end of hydraulic type secondary drive device is called low pressure.
The feature of the preferred embodiment that of Credence test method is other is, the effective torque M1 of hydraulic type secondary drive device tries to achieve by means of following equation (3):
M1＝vg*dp*k+M Leak(vg，dp，n) (3)。
This equation (3) comprises clearly linear parsing part by vg*dp*k.
At this, COEFFICIENT K is by the constant measured or geometric data is determined.M leakrepresent loss moment of torsion/friction torque and therefore represent the deviation with linear relationship, described deviation such as can be kept in combined characteristic.
The feature of the preferred embodiment that of Credence test method is other is, the formulistic relation of trying to achieve by means of equation (3) is such as deposited with the form of combined characteristic or stored.The formulistic relation represented in equation (3) can by reverse transformation and about pressure and moment of torsion maintenance univocality.Therefore, described relation and reverse-power such as can be preserved in a control unit as combined characteristic.
The feature of the preferred embodiment that of Credence test method is other is, the physical pressure on the output terminal of hydraulic type secondary drive device is tried to achieve by means of following equation:
p＝dp(M1，vg，n)-p ND(5)。
At this, p nDrepresent the pressure on the input end of secondary drive device.Described pressure is also referred to as low pressure.The physical pressure p calculated by means of equation (5) is very accurately for stable state with quasi-stationary operation.In the dynamic situation of height must at power-balance time consideration system if desired in inertia.
In addition, the present invention relates to a kind of computer program with computer program, described computer program has the software service implementing aforesaid Credence test method when computer program runs on computers.Computer can be such as the control unit of interior of motor vehicles.
In addition, the present invention relates to a kind of fluid pressure drive device with hydraulic system, in described hydraulic system, carry out aforesaid Credence test method.Fluid pressure drive device is preferably configured to moveable fluid pressure drive device and for representing hydraulic hybrid car.
Accompanying drawing explanation
Other advantages of the present invention, characteristic sum details are drawn by following explanation, in described explanation, explain different embodiments with reference to accompanying drawing.
In unique accompanying drawing, in order to be illustrated Credence test method according to the present invention, the part of such as moveable fluid pressure drive device is shown greatly simplifiedly.
Embodiment
Moveable fluid pressure drive device 10 shown in accompanying drawing, it has elementary drive unit 11 and hydraulic type secondary drive device 12.Elementary drive unit 11 is the internal-combustion engines 15 being also referred to as internal combustion motor.Hydraulic type secondary drive device 12 is the hydraulic presses 16 with pumping function and motor function.Hydraulic press 16 is advantageously configured to axial piston machine.The fuel delivery of hydraulic press 16 is adjustable.The degree of regulation of attaching troops to a unit represents with vg hereinafter.
Shown by arrow 17 and 18, elementary drive unit 11 is connected with hydraulic type secondary drive device 12 in driving.At this, elementary drive unit 11 may be used for driving hydraulic type secondary drive device 12.But hydraulic type secondary drive device 12 also may be used for driving elementary drive unit 11.Shown by symbol 20 between arrow 17 and 18, in driving, additional drive unit/driven device, transmission device, (machinery) speed change gear, branched power can be accessed between elementary drive unit 11 and hydraulic type secondary drive device 12.
Hydraulic type secondary drive device 12 or hydraulic press 16 are connected with hydraulic medium storage 23 in low voltage side.Shown by arrow 24, utilize the hydraulic press 16 be in its pumping function pumped out from hydraulic medium container 23 by hydraulic medium and be transported in the accumulator 25 on high pressure side.
Accumulator 25 is for storing the hydraulic medium loaded with pressure, particularly high pressure.The hydraulic medium loaded with high pressure can be exported as required from accumulator 25 by storage valve 26.The hydraulic medium loaded with high pressure come from accumulator 25 can be used in driving and is in hydraulic press 16 in motor function and/or for other hydraulic presses in drive system or customer.
The output terminal of other hydraulic units, particularly hydraulic consumers device and/or oil hydraulic motor and hydraulic press 16 or hydraulic type secondary drive device 12 or high pressure side can be made to be connected by connecting hydraulic lines 28.
Shown by rectangle symbols 31, the pressure also referred to as low pressure in hydraulic medium storage 23 utilizes suitable pressure transducer to detect.Shown by an other rectangle symbols 32, the high pressure in accumulator 25 also can utilize suitable pressure transducer to detect.Shown by an other rectangle symbols 33, the high pressure in the connecting tube 28 of hydraulic pressure is also detected by suitable pressure transducer.
The point 35 adjacent with rectangle symbols 33 produces physical pressure p, and described physical pressure can be tried to achieve by means of following Credence test method.At this, alphabetical P is for representing power.Letter M is for representing moment of torsion.Letter n is for representing rotating speed.Letter p is for representing pressure.In detail, in following equation (1 to 5), alphanumeric used has following implication:
The power of the elementary drive unit 11 of P0=or internal-combustion engine 15;
The power of P1=hydraulic type secondary drive device 12 or hydraulic press 16;
The moment of torsion of the elementary drive unit 11 of M0=or internal-combustion engine 15;
The moment of torsion of M1=hydraulic type secondary drive device 12 or hydraulic press 16;
The rotating speed of the elementary drive unit 11 of n0=or internal-combustion engine 15;
The rotating speed of n1=hydraulic type secondary drive device 12 or hydraulic press 16;
The degree of regulation of vg=hydraulic press 16;
Dp=pressure difference;
P=physical pressure;
P nD=low pressure;
M leak=loss moment of torsion/friction torque;
K=constant.
Credence test method of the present invention allows to determine the physical pressure p on the point 35 in hydraulic system, and described hydraulic system illustrates in the accompanying drawings simplifiedly.Credence test method of the present invention is used for monitoring or Credence test the force value detected by pressure transducer 33.
Therefore, it is possible to determine applied pressure on the high pressure side of hydraulic press 16 with method continuously by means of the power-balance on hydraulic press 16 in a straightforward manner.The signal Credence test can cancelled pressure transducer that is additional, redundancy or more expend.
Credence test method can advantageously be applied in the hybrid drive of series connection, and a such as part wherein illustrates in the accompanying drawings simplifiedly.At this, hydraulic press 16 is driven by internal-combustion engine 15 in its pumping function, to produce pressure or volume flowrate on the output terminal of described hydraulic press.
Credence test method works when calculating the physical relation between pump moment of torsion and hydraulic pressure clearly, and such as this situation is in axial piston conditioner, particularly axial piston motor or the axial piston pump with wobble-plate or in hydraulic press, the particularly pump with adjustable swing axis.Prerequisite knows the power particularly received in its pumping function by hydraulic press 16.
On branch's transmission device, additionally do not have power at those or only have in the operation point of known power drain, the power P 1 of hydraulic press 16 can be known by the output power P0 of internal-combustion engine or internal combustion motor 15 when considering transmission device/clutch loss.Power P 0 and if desired power P 1 are calculated by emitted dose, air parameter, rotating speed etc. in a control unit.
The effective torque M1 of hydraulic press 16 can be determined accordingly by the known rotating speed n0 of internal combustion motor 15 and the rotating speed n1 of hydraulic press 16.Be suitable for when ignoring loss:
M1＝P1/n1＝P0/n1＝M0*n0/n1 (1)。
Between pressure difference dp on the moment of torsion and hydraulic press 16 of hydraulic press 16, namely between low pressure and high pressure, strong, almost linear relation is existed for constant angle of oscillation or degree of regulation vg.Actual angle of oscillation or the conciliation degree vg of hydraulic press 16 can be recorded.
Following general relation is suitable for for degree of regulation vg, the pressure difference dp of hydraulic press 16 and effective torque M1:
M1＝M(vg，dp，n) (2)，
Or the parsing part with clearly linear:
M1＝vg*dp*k+M Leak(vg，dp，n) (3)。
At this, coefficient k is by the constant measured or geometric data is determined.M leakbe loss moment of torsion/friction torque and be therefore the deviation of linear relationship, described deviation such as can be kept in combined characteristic.
Described relation can reverse transformation and remain univocality about pressure and moment of torsion.Therefore, described relation can such as be preserved in combined characteristic in a control unit.Then relevant with the moment of torsion of degree of regulation, rotating speed and preservation:
dp＝dp(M1，vg，n) (4)。
If such as by low pressure sensor 31 or learn low pressure p by estimation nD, so physics high pressure p can determine as follows:
p＝dp(M1，vg，n)-p ND(5)。
Described calculating is very accurately for stable state with quasi-stationary operation.In the dynamic situation of height must at power-balance time consideration system if desired in inertia.Inertia in system is such as the inertia of the rotary inertia of transmission device and the rotary inertia of hydraulic press 16 or regulating system etc.
If there is another pressure transducer 32 in high pressure, such as in accumulator 25, then two sensors 32 and 33 also can be checked when storage valve 26 is opened mutually.Can being compared with the physical pressure p tried to achieve by aforesaid Credence test method by the force value of sensor 32 and 33 detection of two mutual inspections.Then, can use the result of described comparison, so that by described combined characteristic and this peer machine matches or learn in described peer machine, as long as by sensor 32,33 force value detected are regarded as free from error words.

Claims (10)

1. the Credence test method for inspection pressure value confidence level, described force value utilizes the sensor device (32 in hydraulic system, 33) detect, described hydraulic system comprises elementary drive unit (11) and hydraulic type secondary drive device (12), described hydraulic type secondary drive device is connected with described elementary drive unit (11) in driving, it is characterized in that, try to achieve and use the power P 1 of the power P 0 of described elementary drive unit (11) and described hydraulic type secondary drive device (12), to check on the output terminal of the secondary drive device (12) of described hydraulic pressure by described sensor device (32, 33) confidence level of the force value detected.
2. Credence test method according to claim 1, is characterized in that, the described power P 1 of described hydraulic type secondary drive device (12) calculates according to the power P 0 exported by described elementary drive unit (11) when considering loss.
3. according to Credence test method in any one of the preceding claims wherein, it is characterized in that, the power P 0 exported by described elementary drive unit (11) is tried to achieve according to known Operational Limits.
4. according to Credence test method in any one of the preceding claims wherein, it is characterized in that, the effective torque M1 of described hydraulic type secondary drive device (12) tries to achieve by means of following equation (1):
M1=P1/n1=P0/n1=M0*n0/n1 （1）。
5. Credence test method according to claim 4, it is characterized in that, the constant degree of regulation vg for described hydraulic type secondary drive device (12) between the moment of torsion M1 and the hydraulic pressure difference dp on described hydraulic type secondary drive device (12) of described hydraulic type secondary drive device (12) has strong almost linear relation.
6. the Credence test method according to claim 4 or 5, is characterized in that, the effective torque M1 of described hydraulic type secondary drive device (12) tries to achieve by means of following equation (3):
M1=M(vg, dp, n) or
M1=vg*dp*k+M Leak（vg，dp，n） （3）。
7. Credence test method according to claim 6, is characterized in that, the formulistic relation of trying to achieve by means of equation (3) and reverse-power: dp=dp(M1, vg, n) such as deposit with the form of combined characteristic or store.
8. the Credence test method according to any one of claim 5 to 7, is characterized in that, the physical pressure p of the output terminal of described hydraulic type secondary drive device (12) tries to achieve by means of following equation (5):
p=dp（M1，vg，n）-p ND（5）。
9. have a computer program for computer program, described computer program has to be implemented according to the software service for carrying out Credence test method in any one of the preceding claims wherein when described computer program performs on computers.
10. there is a fluid pressure drive device for hydraulic system, implement in described hydraulic system according to Credence test method in any one of the preceding claims wherein.
CN201380070946.9A 2012-11-20 2013-11-07 Credence test method Expired - Fee Related CN104937286B (en)

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DE102012221127.6A DE102012221127A1 (en) 2012-11-20 2012-11-20 Plausibility examination procedure
PCT/EP2013/073227 WO2014079692A1 (en) 2012-11-20 2013-11-07 Plausibility checking method

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017215055A1 (en) 2017-08-29 2019-02-28 Robert Bosch Gmbh Method for monitoring a pressure sensor with a pressure pulse generator

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10236391B3 (en) * 2002-08-08 2004-04-08 Robert Bosch Gmbh Pressure-medium accumulator inspection method in motor vehicle, involves comparing actual and target pressure generator drive time passages, when detected pressure-medium circuit working pressure is lower than preset bias pressure
CN1920281A (en) * 2005-08-23 2007-02-28 罗伯特.博世有限公司 Method of recognizing external adjustment steps
CN101349296A (en) * 2008-08-12 2009-01-21 大连海事大学 Hydraulic system power measuring device based on MEMS reducing pipe flow sensor
US20110203891A1 (en) * 2010-02-23 2011-08-25 Michael Anthony Stoner Torque converter control for a vehicle
CN102312882A (en) * 2010-06-29 2012-01-11 通用电气公司 Be used for monitoring method, monitoring device and the fluid turbine of the member of oil hydraulic circuit

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2906897A1 (en) * 1979-02-22 1980-09-04 Bosch Gmbh Robert METHOD FOR MONITORING A GAS PRESSURE STORAGE AND ARRANGEMENT FOR IMPLEMENTING IT

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10236391B3 (en) * 2002-08-08 2004-04-08 Robert Bosch Gmbh Pressure-medium accumulator inspection method in motor vehicle, involves comparing actual and target pressure generator drive time passages, when detected pressure-medium circuit working pressure is lower than preset bias pressure
CN1920281A (en) * 2005-08-23 2007-02-28 罗伯特.博世有限公司 Method of recognizing external adjustment steps
CN101349296A (en) * 2008-08-12 2009-01-21 大连海事大学 Hydraulic system power measuring device based on MEMS reducing pipe flow sensor
US20110203891A1 (en) * 2010-02-23 2011-08-25 Michael Anthony Stoner Torque converter control for a vehicle
CN102312882A (en) * 2010-06-29 2012-01-11 通用电气公司 Be used for monitoring method, monitoring device and the fluid turbine of the member of oil hydraulic circuit

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