An optimization analysis system and analysis method for clutch development

Abstract

The present invention provides an optimized analysis system and analysis method for clutch development. The optimized analysis system includes a boundary parameter collection module, a sliding work calculation module, a pedal force calculation module, an assist spring matching and pedal curve analysis module, a dimension chain verification module, and an output module, and has a boundary parameter intelligent recognition algorithm and a design parameter automatic iterative optimization function. By comparing the vehicle boundary design standard with the calculation result of the actually input boundary parameters, the present invention can optimize the unreasonable boundary parameters in the early design stage of the clutch. Compared with the traditional clutch matching analysis method, it can avoid a large amount of repetitive work caused by the back-end evaluation result overthrowing the front-end evaluation conclusion, and effectively shorten the R & D cycle of the new clutch.

Description

Technical Field

[0001] The present invention relates to the technical field of clutch analysis and design of transmission systems, and particularly relates to an optimization analysis system and analysis method for clutch development. Background Art

[0002] During the development of clutches, there are relatively many design matching analysis tasks. Previously, the sliding friction work, pedal assist curve, and dimensional chain of clutches relied on empirical analysis, without a unified analysis process and method. The efficiency of clutch matching analysis was low, and the error rate was high. Often, the evaluation results at the back end would overturn the evaluation conclusions at the front end, resulting in a large amount of repetitive work. Moreover, due to the lack of a standardized analysis method before, the input boundaries differed greatly, the controllability of the analysis process was poor, and the guiding significance of the analysis results was not significant. Summary of the Invention

[0003] The purpose of the present invention is to design an optimization analysis system for clutch development to achieve synchronous optimization analysis of clutch sliding friction work calculation, pedal assist curve drawing, and dimensional chain verification, improve the development and design efficiency of clutches, and solve problems such as low efficiency, high error rate, large input boundary differences, and poor controllability of the analysis process in traditional matching analysis methods.

[0004] To achieve the above purpose, the present invention adopts the following technical solutions:

[0005] An optimization analysis system for clutch development includes a boundary parameter collection module, a sliding friction work calculation module, a pedal force calculation module, an assist spring matching and pedal curve analysis module, a dimensional chain verification module, and an output module;

[0006] The boundary parameter collection module is the data input end, which is used to evaluate whether the input boundary parameters are within the set range and output the required boundary parameters to other modules;

[0007] The sliding friction work calculation module is used to receive the pressing force, equivalent radius of the friction plate, and friction coefficient parameters output by the boundary parameter collection module, and analyze and calculate the friction work of the clutch at a specific speed, specific load, and specific ramp start in combination with the built-in calculation formula;

[0008] The pedal force calculation module is used to receive the clutch release force, clutch release stroke, and system total lever ratio parameters output by the boundary parameter collection module, and analyze and calculate the pedal force and pedal stroke of the clutch in combination with the built-in calculation formula;

[0009] The assist spring matching and pedal curve analysis module is used to receive the assist spring force parameters output by the boundary parameter collection module, and draw the corresponding curve of the pedal force varying with the pedal stroke in combination with the clutch pedal force and pedal stroke analyzed and calculated by the pedal force calculation module;

[0010] The dimension chain checking module is used to receive the dimension boundary parameters output by the boundary parameter collection module, and calculate the stroke margins of the clutch system pedal, master cylinder, and slave cylinder, the mating tolerance of the interface dimensions, and the installation dimension tolerance of the slave cylinder by the limit tolerance method or the statistical tolerance method;

[0011] The output module is used to compare the calculation results of the above modules with the design standards, evaluate the rationality of the calculation results of each module, put forward optimization suggestions for the unreasonable calculation results of the boundary parameters, and return to the boundary parameter collection module for re-matching analysis until the calculation results of all boundary parameters meet the design standards, and then output the optimized boundary parameter list.

[0012] Specifically, the boundary parameters include vehicle weight, tire rolling radius, engine torque, engine power, total gear ratio of each gear, clamping force, equivalent radius of friction plate, friction coefficient, clutch release force, clutch release stroke, total system leverage ratio, and booster spring force.

[0013] Specifically, the calculation formula built in the sliding work calculation module is: P = FS; where P is the frictional work, F is the equivalent frictional force, and S is the equivalent sliding distance.

[0014] Specifically, the calculation formula built in the pedal force calculation module is: f = F / i, L = l×I; where f is the pedal force, F is the pedal release force, i is the total system leverage ratio, L is the pedal stroke, and l is the pedal release stroke.

[0015] According to the above technical solution, the present invention further proposes an optimization system analysis method for clutch development, including the following steps:

[0016] S1. Input the initial boundary parameter data into the boundary parameter collection module;

[0017] S2. The boundary parameter collection module determines whether the input boundary parameters meet the requirements according to the built-in design standards. If so, execute step S3; otherwise, the boundary parameter collection module reports an error and prompts to re-enter the boundary parameters.

[0018] S3. Perform sliding work, pedal force, booster spring matching, pedal curve analysis, and dimension chain checking calculations in sequence;

[0019] S4. Determine whether the calculation results in step S3 meet the corresponding design standards;

[0020] S5. If all the calculation results meet the design standards, output the corresponding list of boundary parameters. If any calculation result does not meet the design standards, optimize the boundary parameters that do not meet the design standards and then return to step S1 for re - analysis until all the calculation results meet the design standards, and then output the optimized list of boundary parameters.

[0021] Advantages of the present invention:

[0022] An optimization analysis system for clutch development according to the present invention improves the development and design efficiency of the clutch through synchronous optimization analysis of clutch sliding work calculation, pedal assist curve drawing, and dimension chain verification, and solves problems such as low efficiency, high error rate, large input boundary differences, and poor controllability of the analysis process in traditional matching analysis methods.

[0023] An optimization analysis method for clutch development according to the present invention compares the vehicle boundary design standards with the calculation results of the actually input boundary parameters, can optimize the boundary parameters with unreasonable design in the early stage of clutch design. Compared with the traditional clutch matching analysis method, it can avoid a large amount of repetitive work caused by the back - end evaluation results overthrowing the front - end evaluation conclusions, and effectively shortens the R & D cycle of new clutches. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0025] Figure 1 is the block diagram of the composition structure of an optimization analysis system for clutch development according to the present invention;

[0026] Figure 2 is the flowchart of an optimization analysis method for clutch development according to the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the scope of protection of the present invention.

[0028] Example 1: Refer to Figure 1-2 .

[0029] As Figure 1 shown, an optimized analysis system for clutch development includes a boundary parameter collection module, a sliding work calculation module, a pedal force calculation module, an assist spring matching and pedal curve analysis module, a dimension chain checking module, and an output module;

[0030] The boundary parameter collection module is the data input end, which is used to evaluate whether the input boundary parameters are within the set range and output the required boundary parameters to other modules;

[0031] The sliding work calculation module is used to receive the clamping force, equivalent radius of the friction plate, and friction coefficient parameters output by the boundary parameter collection module, and analyze and calculate the friction work of the clutch under specific rotational speed, specific load, and specific ramp start in combination with the built-in calculation formula;

[0032] The pedal force calculation module is used to receive the clutch release force, clutch release stroke, and total system leverage ratio parameters output by the boundary parameter collection module, and analyze and calculate the pedal force and pedal stroke of the clutch in combination with the built-in calculation formula;

[0033] The assist spring matching and pedal curve analysis module is used to receive the assist spring force parameters output by the boundary parameter collection module, and draw the corresponding relationship curve of the pedal force changing with the pedal stroke in combination with the clutch pedal force and pedal stroke analyzed and calculated by the pedal force calculation module;

[0034] The dimension chain checking module is used to receive the dimension boundary parameters output by the boundary parameter collection module, and calculate the stroke allowance of the clutch system pedal, master cylinder, and slave cylinder, the interface dimension fit tolerance, and the slave cylinder installation dimension tolerance by the limit tolerance method or the statistical tolerance method;

[0035] The output module is used to compare the calculation results of the above modules with the design standards, evaluate the rationality of the calculation results of each module, put forward optimization suggestions for the calculation results of unreasonable boundary parameters, and return to the boundary parameter collection module for re-matching analysis until the calculation results of all boundary parameters meet the design standards, and then output the optimized boundary parameter list.

[0036] Specifically, the boundary parameters include vehicle weight, tire rolling radius, engine torque, engine power, total gear ratio of each gear, clamping force, equivalent radius of the friction plate, friction coefficient, clutch release force, clutch release stroke, total system leverage ratio, and assist spring force.

[0037] Specifically, the calculation formula built in the sliding work calculation module is: P = FS; where P is the friction work, F is the equivalent friction force, and S is the equivalent sliding distance.

[0038] Specifically, the calculation formula built into the pedal force calculation module is: f = F / i, L = l×I; where f is the pedal force, F is the pedal separation force, i is the total system leverage ratio, L is the pedal stroke, and l is the pedal separation stroke.

[0039] As Figure 2 shown, in this embodiment, an optimized system analysis method for clutch development is further proposed, including the following steps:

[0040] S1. Input the initial boundary parameter data into the boundary parameter collection module;

[0041] S2. The boundary parameter collection module determines whether the input boundary parameters meet the requirements according to the built-in design criteria. If so, execute step S3; otherwise, the boundary parameter collection module reports an error and prompts to re-enter the boundary parameters.

[0042] S3. Perform the calculations of sliding work, pedal force, matching of the assist spring, analysis of the pedal curve, and verification of the dimension chain in sequence.

[0043] S4. Determine whether the calculation results in step S3 meet the corresponding design criteria.

[0044] S5. If all the calculation results meet the design criteria, output the corresponding boundary parameter list. If any calculation result does not meet the design criteria, after optimizing the boundary parameters that do not meet the design criteria, return to step S1 for re-analysis until all the calculation results meet the design criteria, and then output the optimized boundary parameter list.

[0045] The above is only a preferred embodiment of the present invention, and does not impose any form of limitation on the structure of the present invention. Any simple modification, equivalent change, and modification made to the above embodiments based on the technical essence of the present invention all fall within the scope of the technical solution of the present invention.

Claims

1. An optimized analysis system for clutch development, characterized in that, It includes a boundary parameter collection module, a sliding work calculation module, a pedal force calculation module, a booster spring matching and pedal curve analysis module, a dimension chain verification module, and an output module; The boundary parameter collection module is the data input end, which is used to evaluate whether the input boundary parameters are within the set range and output the required boundary parameters to other modules; The boundary parameters include vehicle weight, tire rolling radius, engine torque, engine power, total gear ratio of each gear, clamping force, equivalent radius of friction plate, friction coefficient, clutch release force, clutch release stroke, total system leverage ratio, and booster spring force; The sliding work calculation module is used to receive the clamping force, equivalent radius of friction plate, and friction coefficient parameters output by the boundary parameter collection module, and analyze and calculate the friction work of the clutch under specific rotational speed, specific load, and specific ramp start conditions in combination with the built-in calculation formula; The calculation formula built in the sliding work calculation module is: P = FS; where P is the friction work, F is the equivalent friction force, and S is the equivalent sliding distance; The pedal force calculation module is used to receive the clutch release force, clutch release stroke, and total system leverage ratio parameters output by the boundary parameter collection module, and analyze and calculate the pedal force and pedal stroke of the clutch in combination with the built-in calculation formula; The calculation formula built in the pedal force calculation module is: f = F / i, L = l×I; where f is the pedal force, F is the pedal release force, i is the total system leverage ratio, L is the pedal stroke, and l is the pedal release stroke; The booster spring matching and pedal curve analysis module is used to receive the booster spring force parameter output by the boundary parameter collection module, and draw the corresponding relationship curve of pedal force changing with pedal stroke in combination with the clutch pedal force and pedal stroke analyzed and calculated by the pedal force calculation module; The dimension chain verification module is used to receive the dimension boundary parameters output by the boundary parameter collection module, and calculate the stroke margin of the clutch system pedal, master cylinder, and slave cylinder, the interface dimension fit tolerance, and the slave cylinder installation dimension tolerance by the limit tolerance method or the statistical tolerance method; The output module is used to compare the calculation results of the above modules with the design standards, evaluate the rationality of the calculation results of each module, put forward optimization suggestions for the calculation results of unreasonable boundary parameters, and return to the boundary parameter collection module for re-matching analysis until the calculation results of all boundary parameters meet the design standards, and then output the optimized boundary parameter list.

2. An optimized system analysis method for clutch development, characterized in that, It includes the following steps: S1. Input the initial boundary parameter data into the boundary parameter collection module; S2. The boundary parameter collection module judges whether the input boundary parameters meet the requirements according to the built-in design standards. If so, execute step S3; otherwise, the boundary parameter collection module reports an error and prompts to re-enter the boundary parameters; S3. Perform sliding work, pedal force, booster spring matching and pedal curve analysis, and dimension chain verification calculations in sequence; S4. Judge whether the calculation results in step S3 meet the corresponding design standards; S5. If all calculation results meet the design standards, output the corresponding boundary parameter list. If there is a calculation result that does not meet the design standards, after optimizing the boundary parameters that do not meet the design standards, return to step S1 for re-analysis until all calculation results meet the design standards, and then output the optimized boundary parameter list.

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