CN-121995859-A - Self-adaptive control method, system and equipment for bus flexible bending process

CN121995859ACN 121995859 ACN121995859 ACN 121995859ACN-121995859-A

Abstract

The invention discloses a self-adaptive control method, a self-adaptive control system and self-adaptive control equipment for a busbar flexible bending process, which relate to the technical field of self-adaptive control and comprise the steps of uploading bending processing tasks, driving a task engine, executing task interpretation and bending control optimization decision to determine a pre-processing strategy, issuing the pre-processing strategy to a servo control module to execute busbar bending control driving, triggering a monitoring array deployed by a numerical control machine tool to synchronously monitor working conditions along with the busbar bending control driving and transmit the monitoring array back to a bending monitoring module to judge out-of-limit of pressure and friction force, judging strategy evolution consistency based on a stress flow field and a dislocation density field, and executing processing regulation and control of the servo control module according to an on-line regulator if processing deviation exists.

Inventors

TAO JIE
HUANG XIANBO
Ge Xiuken
HE JUN
HE WEI
DONG JIA

Assignees

镇江西门子母线有限公司

Dates

Publication Date: 20260508
Application Date: 20260129

Claims (10)

1. The self-adaptive control method of the bus flexible bending process is characterized by comprising the following steps of: uploading a bending processing task, driving a task engine, executing task interpretation and bending control optimization decision, and determining a preprocessing strategy; issuing the preprocessing strategy to a servo control module to execute busbar bending control driving; Triggering a monitoring array deployed by a numerical control machine along with busbar bending control drive, synchronously monitoring working conditions, transmitting back to a bending monitoring module, judging out-of-limit of pressure and friction force, judging strategy evolution consistency based on a stress flow field and a dislocation density field, and executing processing regulation and control of a servo control module according to an on-line regulator if processing deviation exists; wherein, the bending monitoring module is embedded with a dynamic projection plane based on dislocation density evolution and flow stress evolution of a preprocessing strategy.
2. The method of claim 1, wherein driving the task engine to perform task interpretation and bend control optimization decisions comprises: The task engine reads the bending processing task and determines bus basic information and bending processing requirements, wherein the bus basic information at least comprises material marks, thicknesses and mold geometries, and the task engine is an embedded plug-in of a machine tool control center console; determining bending constraint conditions, state elements and control elements by executing first task interpretation, wherein the control elements are used for driving an end effector of a machine tool; And initializing an optimizing space by executing a second optimizing decision and bending constraint conditions and state elements and control elements, and generating a preprocessing strategy by iterative optimizing, wherein the optimizing constraint is carried out by adding a tabu table of preset preference and unlocking a tabu table of preset iteration times.
3. The self-adaptive control method of the bus flexible bending process according to claim 2, wherein the bending constraint condition comprises a main target and at least two sub-targets, the main target is net after rebound and meets tolerance requirements, the first sub-target is that the maximum equivalent stress in the bending process is smaller than a material limit, and the second sub-target is that the compressive stress of a pressed area is uniformly distributed; the state element at least comprises a bending angle and an optimal stress-strain path; The control element at least comprises a position track and speed curve of the bending knife, a dynamic pressing force of the pressing shaft and a regulating and controlling amount of the auxiliary shaft.
4. The self-adaptive control method of the bus flexible bending process according to claim 1, wherein the preprocessing strategy is subjected to minimum execution unit decomposition and space-time code labeling and is issued to a servo control module, wherein the servo control module is in control connection with the execution of the tail end of a machine tool; According to the preprocessing strategy, generating a dynamic projection surface by dislocation density evolution and flow stress evolution under a bending control period, and transmitting the dynamic projection surface to a bending monitoring module; and establishing the same-frequency constraint of the servo control module and the bending monitoring module.
5. The method for adaptively controlling a busbar flexible bending process according to claim 1, wherein the monitoring array for triggering the deployment of the numerical control machine tool along with the busbar bending control drive comprises: A monitoring array is deployed in a numerical control machine tool, wherein the monitoring array consists of a high-frequency ultrasonic probe integrated in a die, a mechanical sensor integrated in a bending cutter and a pressing shaft and a fiber grating sensor integrated on the surface of a bus; and synchronously triggering the monitoring array to monitor the bending process along with the control drive of the servo control module, and determining bending monitoring data.
6. The method for adaptively controlling a busbar flexible bending process according to claim 5, wherein the construction of the on-line modulator before the performing of the processing modulation of the servo control module according to the on-line modulator comprises: according to constitutive relation of busbar bending, mining a linear regulation relation, wherein a linear proxy mode is adopted to perform piecewise linear conversion treatment on the nonlinear relation; And according to the linear regulation and control relation, supervising and training the on-line regulator, wherein the on-line regulator is a peripheral plug-in at the communication middle end of the bending monitoring module and the servo control module.
7. The method of adaptively controlling a busbar flexible bending process according to claim 6, wherein the linear regulation relationship includes a first relationship between dislocation state and pressing down speed, a second relationship between work hardening and speed change, and a third relationship between stress distribution and mold state, and the mold state is defined by a micro-swing angle and a mold contact posture.
8. The method for adaptively controlling a busbar flexible bending process according to claim 7, wherein if there is a machining deviation, performing machining regulation of the servo control module according to the on-line regulator, comprising: reading the bending monitoring data, and determining out-of-limit judgment on pressure and friction force from a force sensor to determine a bending processing state; performing space vectorization processing on stress component data from a fiber bragg grating sensor, determining a stress flow field, extracting amplitude, energy and frequency characteristics of acoustic emission full waveforms from a high-frequency ultrasonic probe, and determining a dislocation density field; covering the stress flow field and the dislocation density field to the dynamic projection surface updated in real time, and determining a second-class bending processing state according to consistency; And based on the first bending processing state and the second bending processing state, sending a feedback instruction to the servo control module, and performing feedback decision when flowing through the on-line regulator.
9. An adaptive control system for a busbar flexible bending process, wherein the system is configured to perform an adaptive control method for a busbar flexible bending process according to any one of claims 1 to 8, the system comprising: the strategy determining module is used for uploading bending processing tasks, driving a task engine, executing task interpretation and bending control optimization decisions and determining a preprocessing strategy; the driving module is used for transmitting the preprocessing strategy to the servo control module to execute busbar bending control driving; The judging module is used for controlling driving along with busbar bending, triggering a monitoring array deployed by the numerical control machine tool, synchronously monitoring working conditions and transmitting back to the bending monitoring module, judging out-of-limit of pressure and friction force, judging strategy evolution consistency based on a stress flow field and a dislocation density field, and executing processing regulation and control of the servo control module according to an on-line regulator if processing deviation exists; wherein, the bending monitoring module is embedded with a dynamic projection plane based on dislocation density evolution and flow stress evolution of a preprocessing strategy.
10. An electronic device, the electronic device comprising: A memory for storing executable instructions; And the processor is used for realizing the self-adaptive control method of the bus flexible bending process according to any one of claims 1 to 8 when executing the executable instructions stored in the memory.

Description

Self-adaptive control method, system and equipment for bus flexible bending process Technical Field The invention relates to the technical field of self-adaptive control, in particular to a self-adaptive control method, a self-adaptive control system and self-adaptive control equipment for a bus flexible bending process. Background In the flexible bending process of the bus, because the stress distribution and deformation characteristics of the material in the process are difficult to accurately predict, uneven pressure and friction force are often generated in the bending process, and the processing deviation is caused. The traditional control method is difficult to adjust and correct the deviations in real time, so that the bending quality is difficult to be kept consistent, and the precision and stability of the product are affected. Disclosure of Invention The application provides a self-adaptive control method, a self-adaptive control system and self-adaptive control equipment for a bus flexible bending process, which are used for solving the technical problems that in the prior art, the control precision is insufficient and the processing deviation is difficult to correct in real time in the bending processing process. In view of the above problems, the application provides a self-adaptive control method, a self-adaptive control system and self-adaptive control equipment for a bus flexible bending process. In a first aspect of the present application, there is provided a method for adaptively controlling a busbar flexible bending process, the method comprising: The method comprises the steps of uploading a bending processing task, driving a task engine, executing task interpretation and bending control optimization decisions, determining a pre-processing strategy, transmitting the pre-processing strategy to a servo control module to execute busbar bending control driving, triggering a monitoring array deployed by a numerical control machine tool along with busbar bending control driving, synchronously monitoring working conditions and transmitting the monitoring array back to the bending monitoring module, judging out-of-limit conditions of pressure and friction force, judging strategy evolution consistency based on a stress flow field and a dislocation density field, and executing processing regulation and control of the servo control module according to an on-line regulator if processing deviation exists, wherein the bending monitoring module is embedded with a dynamic projection surface based on dislocation density evolution and flow stress evolution of the pre-processing strategy. In a second aspect of the present application, there is provided an adaptive control system for a busbar flexible bending process, the system comprising: the system comprises a bending processing task, a strategy determining module, a driving module, a judging module, a control module and a control module, wherein the bending processing task is uploaded, the driving task is used for driving a task engine to execute task interpretation and bending control optimization decision, a preprocessing strategy is determined, the driving module is used for transmitting the preprocessing strategy to a servo control module to execute busbar bending control driving, the judging module is used for triggering a monitoring array deployed by a numerical control machine along with busbar bending control driving, synchronously monitoring working conditions and transmitting the monitoring array back to the bending monitoring module to judge out-of-limit of pressure and friction force, judging the consistency of strategy evolution based on a stress flow field and a dislocation density field, and executing processing regulation of the servo control module according to an on-line regulator if processing deviation exists, wherein the bending monitoring module is embedded with a dynamic projection surface under dislocation density evolution and flow stress evolution based on the preprocessing strategy. The application provides electronic equipment, which comprises a memory and a processor, wherein the memory is used for storing executable instructions, and the processor is used for realizing the self-adaptive control method of the bus flexible bending process when executing the executable instructions stored in the memory. One or more technical schemes provided by the application have at least the following technical effects or advantages: The method comprises the steps of uploading a bending processing task, driving a task engine, executing task interpretation and bending control optimization decisions, determining a preprocessing strategy, transmitting the preprocessing strategy to a servo control module to execute busbar bending control driving, triggering a monitoring array deployed by a numerical control machine along with busbar bending control driving, synchronously monitoring working conditions and transmitting the monitoring array back