CN-122014723-A - Hydraulic valve opening characteristic adjustment method, hydraulic valve opening characteristic adjustment device, hydraulic valve, and readable storage medium

CN122014723ACN 122014723 ACN122014723 ACN 122014723ACN-122014723-A

Abstract

The application discloses a hydraulic valve opening characteristic adjusting method and device, a hydraulic valve and a readable storage medium, and relates to the technical field of hydraulic control. The method comprises the steps of obtaining historical operation data of a user on the hydraulic valve, obtaining original valve rod displacement-overflow area characteristics of the hydraulic valve, determining actual distribution between valve rod displacement and user operation frequency in a preset valve rod displacement interval based on the historical operation data, dividing the preset valve rod displacement interval into a plurality of displacement subintervals according to the actual distribution, wherein the number of the historical operation data contained in each displacement subinterval is the same, and transforming the original valve rod displacement-overflow area characteristics according to the plurality of displacement subintervals to obtain the adjusted valve rod displacement-overflow area characteristics. Through data-driven user habit analysis and equal frequency conversion, the self-adaptive matching of the opening characteristic of the hydraulic valve and the actual operation requirement of a user is realized, and the problem of poor control hand feeling caused by traditional experience design is solved.

Inventors

LIU XIONG
XU QINGPING
WANG GUOJUN
LI HUAIFU
ZENG JIANQUN

Assignees

中联重科股份有限公司

Dates

Publication Date: 20260512
Application Date: 20260324

Claims (10)

1. A hydraulic valve opening characteristic adjustment method, characterized by comprising: acquiring historical operation data of a user on the hydraulic valve, wherein the historical operation data comprises valve rod displacement information; acquiring original valve rod displacement-overflow area characteristics of the hydraulic valve; determining an actual distribution between valve stem displacement and user operating frequency within a preset valve stem displacement interval based on the historical operating data; dividing the preset valve rod displacement interval into a plurality of displacement subintervals according to the actual distribution, wherein the number of the historical operation data contained in each displacement subinterval is the same; And according to the displacement subintervals, the original valve rod displacement-overflow area characteristic is transformed, and the adjusted valve rod displacement-overflow area characteristic is obtained.
2. The method of adjusting the opening characteristic of a hydraulic valve according to claim 1, wherein the transforming the original valve stem displacement-flow area characteristic according to the plurality of displacement subintervals to obtain the adjusted valve stem displacement-flow area characteristic comprises: Establishing a correspondence between the plurality of displacement subintervals and original valve stem displacement positions in the original valve stem displacement-flow area characteristic; and determining the corresponding overflow area of each displacement subinterval according to the corresponding relation through the original valve rod displacement-overflow area characteristic so as to form an adjusted valve rod displacement-overflow area characteristic.
3. The hydraulic valve opening characteristic adjustment method according to claim 2, wherein the establishing of the correspondence between the plurality of displacement subintervals and the original valve stem displacement position includes: And determining the projection position of each displacement subinterval on a displacement definition domain of the original valve rod displacement-overflow area characteristic, wherein the projection positions are determined through a linear mapping relation, so that the displacement subintervals and the projection positions are in one-to-one correspondence.
4. The hydraulic valve opening characteristic adjustment method according to claim 1, wherein the determining an actual distribution between the valve stem displacement and the user operation frequency in a preset valve stem displacement section based on the history operation data includes: Dividing the preset valve rod displacement interval into a plurality of continuous statistical subintervals; counting the frequency of the historical operating data falling within each of the statistical subintervals to generate an actual distribution between valve stem displacement and user operating frequency.
5. The hydraulic valve opening characteristic adjustment method according to claim 1, characterized in that the dividing the preset valve stem displacement interval into a plurality of displacement subintervals according to the actual distribution includes: And performing equal-frequency discretization on the preset valve rod displacement interval according to the actual distribution to obtain a plurality of displacement subintervals.
6. The hydraulic valve opening characteristic adjustment method according to claim 1, characterized in that the preset valve stem displacement interval is an idle section of the hydraulic valve in which a movement speed of a hydraulic actuator controlled by the hydraulic valve is not affected by an engine speed.
7. The hydraulic valve opening characteristic adjustment method according to claim 6, characterized in that the idle section includes a jog zone in which a rate of change of an area of flow corresponding to a valve rod displacement is smaller than a medium speed zone located after the jog zone.
8. A hydraulic valve opening characteristic adjustment apparatus, characterized by comprising: The data acquisition module is used for acquiring historical operation data of a user on the hydraulic valve, wherein the historical operation data comprises valve rod displacement information; The characteristic acquisition module is used for acquiring the original valve rod displacement-overflow area characteristic of the hydraulic valve; The frequency dividing module is used for determining actual distribution between valve rod displacement and user operation frequency in a preset valve rod displacement interval based on the historical operation data; the displacement dividing module is used for dividing the preset valve rod displacement interval into a plurality of displacement subintervals according to the actual distribution, wherein the quantity of the historical operation data contained in each displacement subinterval is the same; and the characteristic adjustment module is used for transforming the original valve rod displacement-overflow area characteristic according to the plurality of displacement subintervals to obtain the adjusted valve rod displacement-overflow area characteristic.
9. An electronic device, comprising: A memory configured to store instructions; A processor configured to recall instructions from a memory and when executing the instructions, to enable the hydraulic valve opening characteristic adjustment method according to any one of claims 1 to 7.
10. A machine-readable storage medium having stored thereon instructions for causing a machine to perform the hydraulic valve opening characteristic adjustment method according to any one of claims 1 to 7.

Description

Hydraulic valve opening characteristic adjustment method, hydraulic valve opening characteristic adjustment device, hydraulic valve, and readable storage medium Technical Field The application relates to the technical field of hydraulic control, in particular to a hydraulic valve opening characteristic adjusting method and device, a hydraulic valve and a readable storage medium. Background The hydraulic transmission system is widely applied to the field of engineering machinery, particularly in large equipment such as cranes, and the like, a hydraulic valve is used as a core control element, and the operation performance of the hydraulic valve directly influences the operation precision and the operation experience of equipment. Along with the development of engineering machinery to the direction of refinement and intellectualization, a user puts forward higher requirements on the control hand feeling of a hydraulic valve, and more accurate and stable control can be expected to be realized in key operation intervals such as inching adjustment, speed transition and the like. At present, the valve rod opening characteristic of the hydraulic valve for the boarding is mainly based on design experience, benchmarking comparison analysis and scattered information fed back by the market for optimization and adjustment. This traditional optimization lacks systematic consideration of the actual use behavior of the user, often resulting in mismatch of the opening characteristics of the valve stem in different displacement intervals with the user's operating habits. For example, in a jog operation zone where a user is frequently using, the flow rate change corresponding to the valve stem displacement change may be too sensitive to make fine adjustment difficult, while in a high speed zone where the user is less involved, the design of the valve stem opening may be too conservative to fully exploit the device performance. The design mode with the dominant experience is long in optimization period and high in verification cost, and control consistency under different machine types and different working conditions is difficult to ensure, so that complaints about poor operation handfeel, difficult control of inching and the like of users are often caused, and further improvement of the control performance of products is restricted. Disclosure of Invention In view of the foregoing deficiencies of the prior art, an object of an embodiment of the present application is to provide a method and apparatus for adjusting an opening characteristic of a hydraulic valve, and a readable storage medium. In order to achieve the above object, a first aspect of the present application provides a hydraulic valve opening characteristic adjustment method including: acquiring historical operation data of a user on the hydraulic valve, wherein the historical operation data comprises valve rod displacement information; acquiring original valve rod displacement-overflow area characteristics of a hydraulic valve; Determining an actual distribution between valve stem displacement and user operating frequency within a preset valve stem displacement interval based on historical operating data; Dividing a preset valve rod displacement interval into a plurality of displacement subintervals according to actual distribution, wherein the number of historical operation data contained in each displacement subinterval is the same; and according to the plurality of displacement subintervals, the original valve rod displacement-overflow area characteristic is transformed, and the adjusted valve rod displacement-overflow area characteristic is obtained. In the embodiment of the application, the original valve rod displacement-overflow area characteristic is transformed according to a plurality of displacement subintervals to obtain the adjusted valve rod displacement-overflow area characteristic, which comprises the following steps: establishing a corresponding relation between a plurality of displacement subintervals and original valve rod displacement positions in original valve rod displacement-overflow area characteristics; and according to the corresponding relation, determining the corresponding overflow area of each displacement subinterval through the original valve rod displacement-overflow area characteristic so as to form the adjusted valve rod displacement-overflow area characteristic. In the embodiment of the application, the establishment of the corresponding relation between the displacement subintervals and the original valve rod displacement positions comprises the following steps: and determining the projection position of each displacement subinterval on a displacement definition domain of the original valve rod displacement-overflow area characteristic, wherein the projection position is determined through a linear mapping relation, so that the displacement subintervals and the projection positions are in one-to-one correspondence. In an em