CN114109950B - Multifunctional matching calculation method for valve port independent control electrohydraulic system - Google Patents
Multifunctional matching calculation method for valve port independent control electrohydraulic system Download PDFInfo
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- 238000004364 calculation method Methods 0.000 title claims abstract description 11
- 238000005516 engineering process Methods 0.000 claims abstract description 12
- 238000003745 diagnosis Methods 0.000 claims abstract description 9
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- 238000004806 packaging method and process Methods 0.000 claims abstract description 5
- 238000005265 energy consumption Methods 0.000 claims description 39
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- 238000010606 normalization Methods 0.000 claims description 3
- 238000013461 design Methods 0.000 description 4
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Classifications
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- 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
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
-
- 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
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/08—Servomotor systems incorporating electrically operated control means
Abstract
The invention provides a multifunctional matching calculation method for an electrohydraulic system with valve ports independently controlled. The method comprises the steps of determining the valve core technology and the mechanical structure of an electro-hydraulic system with an independent control target valve port; inputting the maximum receivable packaging size, the oil temperature allowable range, the environmental protection level, the rated pressure and the rated flow of the valve core; finally, whether the manual override, the type of the expansion interface, the number of the maximum combination valves required, the fault diagnosis technology adopted and other parameter performances are supported or not is matched. The accurate and rapid matching of the valve port independent control electro-hydraulic system is realized through a designed valve port independent control electro-hydraulic system performance parameter weight relation algorithm.
Description
Technical Field
The invention relates to the technical field of valve port independent control electro-hydraulic systems, in particular to a multifunctional matching calculation method of a valve port independent control electro-hydraulic system.
Background
Because the hydraulic system is widely applied in the fields of aerospace, ships, moving vehicles, steel industry and the like, in the design of the existing hydraulic system, a common method is that a designer generally performs design and shape selection on an electrohydraulic system based on simple calculation and experience in different engineering equipment requirements, system power, mechanical structures and the like. The design multifunctional matching calculation method is easy to enable the electrohydraulic system design to be incapable of establishing multi-objective optimization under the multi-constraint condition, so that the determination of an optimization parameter configuration scheme is particularly important. The engineering test target parameter table of the valve port independent control electro-hydraulic system is established, the weight relation between equipment engineering requirements, test objects and test flows is calculated, and an accurate and rapid multifunctional matching calculation method of the valve port independent control electro-hydraulic system is formed, so that the successful implementation of future industrial application can be effectively ensured.
Disclosure of Invention
According to the technical problems, the multifunctional matching calculation method of the valve port independent control electro-hydraulic system is provided, and aims to quickly match the valve ports for the valve port independent control electro-hydraulic system aiming at different engineering equipment requirements, system power and mechanical structures. The invention adopts the following technical means:
a multifunctional matching calculation method for an electrohydraulic system with an independent control valve port comprises the following steps:
step 1, obtaining basic parameters of an electro-hydraulic system with an independent control valve port, wherein the basic parameters comprise valve core technology, mechanical structure and core parameters;
step 2, selecting a valve core model meeting the requirements of valve core technology and mechanical construction of an electro-hydraulic system with an independent control target valve port;
step 3, judging whether the valve port parameters of the currently selected model meet the core parameters;
step 4, calculating standardized parameters of valve port parameters of the electro-hydraulic system for independently controlling the given valve port;
step 5, calculating standardized parameters of the selected valve port expansion function parameters;
step 6, calculating standardized parameters of the energy consumption of the electro-hydraulic system;
and 7, calculating a matching scoring result based on the standardized parameters calculated in the steps 4-6.
Further, the core parameters include maximum acceptable package size, maximum number of combination valves required, oil temperature tolerance range, environmental protection rating, rated pressure and rated flow.
Further, the step 3 specifically includes the following steps:
the maximum accommodating package size of the current demand is Tar_Env, and the valve port package size Cur_Env of the current model is selected to meet the following conditions: cur_Env < Tar_Env;
the required oil temperature range is Cur_Tmin-Cur_Tmax, and the valve port oil temperature range of the current model is selected to meet the conditions of Tar_Tmin < Cur_Tmin-Cur_Tmax < Tar_Tmax;
the demand environment protection level is Tar_IP, and the selected number valve port environment protection level Cur_IP meets the requirement that Cur_IP > Tar_IP;
the rated pressure of the demand valve port is Tar_Press, and the rated pressure Cur_Press of the valve port of the current model is selected to satisfy the following conditions: cur_Press > Tar_Press;
the rated Flow of the valve port is Tar_Flow, and the rated Flow Cur_Flow of the valve port with the current model is selected to satisfy the following conditions: cur_Flow > Tar_Flow.
Further, the step 4 specifically includes the following steps:
respectively calculating the packaging size omega of the independent control electrohydraulic system of the given valve port 1 Allowable range omega of oil temperature 2 Environmental protection level Ω 3 Rated pressure omega 4 Rated flow omega 5 Is used for the normalization of the parameters:
Ω 1 ＝(Tar__Env-Cur_Env)/Tar__Env，
Ω 2 ＝((Cur_Tmin-Tar_Tmin)+(Tar_Tmax-Cur_Tmax))/2(Cur_Tmax-Cur_Tmin)，
Ω 3 ＝(Cur_IP-Tar_IP)/Tar_IP，
Ω 4 ＝(Cur_Press-Tar_Press)/Tar_Press，
Ω 5 ＝(Cur_Flow-Tar_Flow)/Tar_Flow。
further, the valve port expansion functions comprise whether manual override, an expansion interface type, the number of the maximum combined valves required and the fault diagnosis technology adopted are supported, the selected valve port with the type number comprises the functions, the type is selected according to the weight proportion occupied by each function, and the standardized parameters of the parameters are as follows:
support manual override Ω 6 =1 or no support for manual override Ω 6 ＝0；
Ω 7 =log0.5n, where n is the number of supported interface types;
Ω 8 =log0.5 m, where m is the number of supported maximum combining valves;
support fault diagnosis technique omega 9 =1 or does not support fault diagnosis technique Ω 9 ＝0。
Further, the step 6 specifically includes: the energy consumption of the electrohydraulic system is determined through experiments, and the standardized parameter omega of the energy consumption of the electrohydraulic system 10 Log0.5p, wherein the energy of the electrohydraulic systemConsumption coefficient p=p E +P M ，P E For the energy consumption of the electric control system, P M And the energy consumption of the hydraulic system is realized.
Further, the electric control system energy consumption and the hydraulic system energy consumption are measured by the following modes:
measuring the energy consumption of a hydraulic pump motor according to a hydraulic pump power meter, so that the hydraulic pump motor continuously runs for unit time under a certain load condition, and obtaining the energy consumption of the hydraulic pump;
and measuring the energy consumption of the hydraulic valve electric control plate according to the electric control plate power meter, so that the hydraulic valve electric control plate continuously runs for unit time under a certain load condition, and obtaining the energy consumption of the hydraulic valve electric control plate.
In step 7, the basic parameters are substituted into the algorithm for calculating the weight relation of the performance parameters of the valve port independent control electro-hydraulic system to obtain a matching scoring result, and the formula is as follows:
wherein, K is i And the weight of the current parameter in the final scoring result is taken as the weight of the current parameter.
The valve port independent control electrohydraulic system performance parameter weight relation algorithm designed by the invention realizes accurate and rapid valve port independent control electrohydraulic system selection.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to the drawings without inventive effort to a person skilled in the art.
FIG. 1 is a flow chart of a method of calculating a multi-functional match for an electro-hydraulic system with independent control of valve ports according to the present invention;
FIG. 2 is a flow chart of the integrated energy consumption measurement method of the valve port independent control electro-hydraulic system of the invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1, the invention discloses a multifunctional matching calculation method of an electrohydraulic system with valve ports independently controlled, which comprises the following steps:
step 1, obtaining basic parameters of an electro-hydraulic system with an independent control valve port, wherein the basic parameters comprise valve core technology, mechanical structure and core parameters; the core parameters include maximum acceptable package size, maximum number of combination valves required, oil temperature tolerance range, environmental protection rating, rated pressure and rated flow.
Step 2, matching the valve core model which meets the valve core technology and mechanical construction required by the valve port independent control electro-hydraulic system by meeting the valve core technology and mechanical construction of the target valve port independent control electro-hydraulic system;
step 3, judging whether the valve port parameters of the currently selected model meet the core parameters;
step 4, calculating standardized parameters of valve port parameters of the electro-hydraulic system for independently controlling the given valve port;
step 5, calculating standardized parameters of the selected valve port expansion function parameters;
step 6, calculating standardized parameters of the energy consumption of the electro-hydraulic system;
and 7, calculating a matching scoring result based on the standardized parameters calculated in the steps 4-6.
Specifically, the step 3 specifically includes the following steps:
the maximum accommodating package size of the current demand is Tar_Env, and the valve port package size Cur_Env of the current model is selected to meet the following conditions: cur_Env < Tar_Env;
the required oil temperature range is Cur_Tmin-Cur_Tmax, and the valve port oil temperature range of the current model is selected to meet the conditions of Tar_Tmin < Cur_Tmin-Cur_Tmax < Tar_Tmax;
the demand environment protection level is Tar_IP, and the selected number valve port environment protection level Cur_IP meets the requirement that Cur_IP > Tar_IP;
the rated pressure of the demand valve port is Tar_Press, and the rated pressure Cur_Press of the valve port of the current model is selected to satisfy the following conditions: cur_Press > Tar_Press;
the rated Flow of the valve port is Tar_Flow, and the rated Flow Cur_Flow of the valve port with the current model is selected to satisfy the following conditions: cur_Flow > Tar_Flow.
Specifically, the step 4 specifically includes the following steps:
respectively calculating the packaging size omega of the independent control electrohydraulic system of the given valve port 1 Allowable range omega of oil temperature 2 Environmental protection level Ω 3 Rated pressure omega 4 Rated flow omega 5 Is used for the normalization of the parameters:
Ω 1 ＝(Tar__Env-Cur_Env)/Tar__Env，
Ω 2 ＝((Cur_Tmin-Tar_Tmin)+(Tar_Tmax-Cur_Tmax))/2(Cur_Tmax-Cur_Tmin)，
Ω 3 ＝(Cur_IP-Tar_IP)/Tar_IP，
Ω 4 ＝(Cur_Press-Tar_Press)/Tar_Press，
Ω 5 ＝(Cur_Flow-Tar_Flow)/Tar_Flow。
specifically, the valve port expansion function comprises whether manual override, an expansion interface type, the number of the maximum combination valves required and the fault diagnosis technology adopted are supported, the selected valve port comprises the functions, the matching is carried out according to the weight proportion occupied by each function, and the standardized parameters of the parameters are as follows:
support manual override Ω 6 =1 or no support for manual override Ω 6 ＝0；
Ω 7 =log0.5n, where n is the number of supported interface types;
Ω 8 =log0.5 m, where m is the number of supported maximum combining valves;
supporting fault diagnosisTechnique omega 9 =1 or does not support fault diagnosis technique Ω 9 ＝0。
The invention aims to provide a valve port independent control electro-hydraulic system which is an electric control and hydraulic control mixed system, and the energy consumption of the electro-hydraulic system is experimentally measured, wherein the energy consumption of the electric control system and the energy consumption of the hydraulic system are included, and the step 6 specifically comprises the following steps: the energy consumption of the electrohydraulic system is determined through experiments, and the standardized parameter omega of the energy consumption of the electrohydraulic system 10 Log0.5P, wherein the energy consumption coefficient p=p of the electrohydraulic system E +P M ，P E For the energy consumption of the electric control system, P M And the energy consumption of the hydraulic system is realized.
The energy consumption of the electric control system and the energy consumption of the hydraulic system are measured in the following modes:
measuring the energy consumption of a hydraulic pump motor according to a hydraulic pump power meter, so that the hydraulic pump motor continuously runs for unit time under a certain load condition, and obtaining the energy consumption of the hydraulic pump;
and measuring the energy consumption of the hydraulic valve electric control plate according to the electric control plate power meter, so that the hydraulic valve electric control plate continuously runs for unit time under a certain load condition, and obtaining the energy consumption of the hydraulic valve electric control plate.
In step 7, the basic parameters are substituted into the algorithm for calculating the weight relation of the performance parameters of the valve port independent control electro-hydraulic system to obtain a matching scoring result, and the formula is as follows:
wherein, K is i And the weight of the current parameter in the final scoring result is taken as the weight of the current parameter.
The valve port independent control electrohydraulic system performance parameter weight relation algorithm designed by the invention realizes accurate, rapid and multifunctional matching of the valve port independent control electrohydraulic system.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (1)
1. The multifunctional matching calculation method of the valve port independent control electrohydraulic system is characterized by comprising the following steps of:
step 1, obtaining basic parameters of an electro-hydraulic system with an independent control valve port, wherein the basic parameters comprise valve core technology, mechanical structure and core parameters;
step 2, selecting a valve core model meeting the requirements of valve core technology and mechanical construction of an electro-hydraulic system with an independent control target valve port;
step 3, judging whether the valve port parameters of the currently selected model meet the core parameters;
step 4, calculating standardized parameters of valve port parameters of the electro-hydraulic system for independently controlling the given valve port;
step 5, calculating standardized parameters of the selected valve port expansion function parameters;
step 6, calculating standardized parameters of the energy consumption of the electro-hydraulic system;
step 7, calculating a matching scoring result based on the standardized parameters calculated in the steps 4-6;
the core parameters comprise maximum accommodating packaging size, the number of the required maximum combined valves, an oil temperature allowable range, an environmental protection level, rated pressure and rated flow;
the maximum accommodating package size of the current demand is Tar_Env, and the valve port package size Cur_Env of the current model is selected to meet the following conditions: cur_Env < Tar_Env;
the required oil temperature range is Cur_Tmin-Cur_Tmax, and the valve port oil temperature range of the current model is selected to meet the conditions of Tar_Tmin < Cur_Tmin-Cur_Tmax < Tar_Tmax;
the demand environment protection level is Tar_IP, and the selected number valve port environment protection level Cur_IP meets the requirement that Cur_IP > Tar_IP;
the rated pressure of the demand valve port is Tar_Press, and the rated pressure Cur_Press of the valve port of the current model is selected to satisfy the following conditions: cur_Press > Tar_Press;
the rated Flow of the valve port is Tar_Flow, and the rated Flow Cur_Flow of the valve port with the current model is selected to satisfy the following conditions: cur_Flow > Tar_Flow;
the step 4 specifically comprises the following steps:
respectively calculating the packaging size omega of the independent control electrohydraulic system of the given valve port 1 Allowable range omega of oil temperature 2 Environmental protection level Ω 3 Rated pressure omega 4 Rated flow omega 5 Is used for the normalization of the parameters:
Ω 1 ＝(Tar__Env-Cur_Env)/Tar__Env，
Ω 2 ＝((Cur_Tmin-Tar_Tmin)+(Tar_Tmax-Cur_Tmax))/2(Cur_Tmax-Cur_Tmin)，
Ω 3 ＝(Cur_IP-Tar_IP)/Tar_IP，
Ω 4 ＝(Cur_Press-Tar_Press)/Tar_Press，
Ω 5 ＝(Cur_Flow-Tar_Flow)/Tar_Flow；
the valve port expanding function comprises the steps of supporting manual override, expanding interface types, the number of the maximum combination valves required and fault diagnosis technology adopted, wherein the selected valve port comprises the functions, and the valve port is selected according to the weight proportion of each function, and standardized parameters of the parameters are as follows:
support manual override Ω 6 =1 or no support for manual override Ω 6 ＝0；
Ω 7 =log0.5n, where n is the number of supported interface types;
Ω 8 =log0.5 m, where m is the number of supported maximum combining valves;
support fault diagnosis technique omega 9 =1 or does not support fault diagnosis technique Ω 9 ＝0；
The step 6 specifically comprises the following steps: the energy consumption of the electrohydraulic system is determined through experiments, and the standardized parameter omega of the energy consumption of the electrohydraulic system 10 Log0.5P, wherein the energy consumption coefficient p=p of the electrohydraulic system E +P M ，P E For the energy consumption of the electric control system, P M The energy consumption of the hydraulic system is realized;
the energy consumption of the electric control system and the energy consumption of the hydraulic system are measured in the following modes:
measuring the energy consumption of a hydraulic pump motor according to a hydraulic pump power meter, so that the hydraulic pump motor continuously runs for unit time under a certain load condition, and obtaining the energy consumption of the hydraulic pump;
measuring the energy consumption of the hydraulic valve electric control plate according to the electric control plate power meter, so that the hydraulic valve electric control plate continuously runs for unit time under a certain load condition, and obtaining the energy consumption of the hydraulic valve electric control plate;
in the step 7, the basic parameters are substituted into a valve port independent control electrohydraulic system performance parameter weight relation algorithm to calculate and obtain a matching scoring result, and the formula is as follows:
wherein, therein Ki And the weight of the current parameter in the final scoring result is taken as the weight of the current parameter.
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