Design of Automatic Spot Welding Control System about the Vehicle Compartment Side Plate Based on PLC

2013 ◽  
Vol 441 ◽  
pp. 801-804
Author(s):  
Yi Lun Han ◽  
Jing Wang ◽  
Zong Bing Zhang ◽  
Ming Zhang
Keyword(s):  
Intelligent Control ◽  
Spot Welding ◽  
Welding Process ◽  
Response Speed ◽  
Welding Parameter ◽  
Side Plate ◽  
Compound Control ◽  
The Stability ◽  
And Control ◽  
Control Accuracy

In order to improve the welding efficiency of vehicle compartment side plate, the stability of welding parameter and control accuracy, the thesis applies advanced intelligent control theory (fuzzy and PID compound control) and multi-sensor fusion technology and combines with the automatic spot welding process, using the Mitsubishi FX2N-80MT-001 programmable controller and GT1155-QSBD-C touch screen, achieved the automatic spot welding control of the vehicle compartment side plate. Experimental results show that the system’s response speed, control accuracy and stability can meet the requirements of production.

Method of Compensation Control for Shaking Table

2011 ◽  
Vol 199-200 ◽  
pp. 1397-1404
Author(s):  
Zhen Bao Li ◽  
Zhen Yun Tang ◽  
Jin Bao Ji ◽  
Xiao Liang Li ◽  
Da Xing Zhou ◽  
...  
Keyword(s):  
Control Algorithm ◽  
Variable Parameter ◽  
Shaking Table ◽  
Shaking Table Tests ◽  
Stability And Control ◽  
Compensation Control ◽  
Narrow Bandwidth ◽  
The Stability ◽  
And Control ◽  
Control Accuracy

This paper presents the defects existing in shaking table control including the overshoot of displacement under low-middle frequency input using three variable parameter controls, the narrow bandwidth resulting from the performance of servo-valve and low accuracy of seismic wave reproduction because of specimen and table interaction. The effects of these factors on the stability and control accuracy of shaking table are discussed, and then the reasons of these problems existing are analyzed. The aim of this paper is to improve the stability and control accuracy of shaking table, thus, some corresponding strategies for compensation control are proposed. And a series of shaking table tests with one-story frame and two-story frame for verifying the validity of compensation control algorithm are performed.

Optimizing Control Methods of Airport Pipeline Refueling Process

2015 ◽  
Vol 738-739 ◽  
pp. 1007-1011
Author(s):  
Xiao Zhong Zhang ◽  
Fan Qin Meng ◽  
Jie Hui Wang
Keyword(s):  
Intelligent Control ◽  
Control Methods ◽  
Fuzzy Pid Control ◽  
Pipe Line ◽  
Optimizing Control ◽  
The Stability ◽  
Stability And Accuracy ◽  
Classical Control ◽  
And Control ◽  
Better Than

Due to the non-linearity and long delay of airport pipe line refueling system, it is difficult for classical control methods to ensure stable pumping pressure and refueling flow. To improve the stability of the refueling process, the paper introduces human-simulated intelligent control (HSIC) method to the recognization of refueling status, online self-adjusting and control of refueling parameters. Simulation shows that the stability and accuracy of HSIC control methods were better than that of classical PID and fuzzy PID control.

Summary of Vehicle Suspension Vibration Systems Control Technology Research

2012 ◽  
Vol 549 ◽  
pp. 843-847
Author(s):  
Jian Feng Wang ◽  
Chuan Xue Song ◽  
Zhong Xiang Lei
Keyword(s):  
Intelligent Control ◽  
Control Method ◽  
System Modeling ◽  
Development Trend ◽  
Future Research ◽  
Modeling And Control ◽  
Compound Control ◽  
Automobile Suspension ◽  
And Control ◽  
Suspension Structure

This paper expounds the automobile suspension structure based on the characteristics of three control strategy and its development, and focuses on modern control method and intelligent control method were discussed, and points out that the compound control method is more suitable to the car complex nonlinear suspension system modeling and control. Finally in the future research needs to be some problems and development trend are discussed.

scholarly journals The Review of the Welding Robot’s Precision

2021 ◽  
Vol 5 (1) ◽  
Author(s):  
Chengqiang Li
Keyword(s):  
Spot Welding ◽  
Large Scale ◽  
Production Capacity ◽  
Industrial Robots ◽  
Working Environment ◽  
Automobile Manufacturing ◽  
Sensing Technology ◽  
And Control ◽  
Control Accuracy

Welding is an significant link in industrial production, and it is known as the "industrial tailor". However, welding fume, arc light, and metal spatter cause a harsh welding working environment, and the quality of welding has a decisive influence on product quality. Low production capacity, difficult recruitment, and low profits have become drawbacks for the development of the welding field. Combining traditional welding with robots can solve these drawbacks and increase the precision of welding. Welding robots are industrial robots engaged in welding and are mostly used in large-scale manufacturing fields such as automobile manufacturing. Welding robots are divided into spot welding robots, arc welding robots and laser welding robots. In addition, body accuracy and control accuracy are the two main factors that affect the robot welding accuracy. In this case, the sensing technology of welding robot is also essential.

Multi Response Optimization of Spot Welding Process Parameters by Taguchi Method

2020 ◽  
Vol 12 (1) ◽  
Author(s):  
S.P. Sundar Singh Sivam ◽  
A. Thirugnanam ◽  
K. Saravanan ◽  
D. Kumaran ◽  
M. Suresh
Keyword(s):  
Electrical Resistance ◽  
Resistance Spot Welding ◽  
Spot Welding ◽  
Weld Zone ◽  
Welding Process ◽  
Class Ii ◽  
Welding Parameter ◽  
Welding Parameters ◽  
Resistance Spot ◽  
Steel Sheets

Electrode deterioration by deformation and chemical reaction during resistance spot welding of steel sheets confirming to AISI1020 is an issue for class II electrode. In view of this, the present study carried out the impacts of squeeze, weld, current and pressure on the nugget diameter, height, force and waviness of welding joint in electrical resistance spot welding of 0.8mm and 1.5 mm thickness of steel sheets with class II electrode to achieve the benefits of cost saving and quality products. A timer and current controlled electrical resistance spot welding machine having 120 kVA capacities were used. During welding process, current periods of 5, 10, 15, 20 and 25 were selected and it was adjusted by increasing from 8 to 10 kA. The optimum welding parameter for multi objectives was obtained using multi signal to noise ratio and the significant level of the welding parameters was further analysed by analysis of variance for all responses. Based on the confirmation test results, it is found out that the developed model can be effectively used to predict the size of weld zone which can improve the welding quality and performance in GRA. The details of welded joint generated by class II electrode were measured and results were analysed in detail.

Ripple Line Fillet Seam Tracking with Visual Sensors in Welding Process

2013 ◽  
Vol 579-580 ◽  
pp. 46-51 ◽  
Author(s):  
Qi Lin Bi ◽  
Yan Ming Quan
Keyword(s):  
Tracking System ◽  
Welding Process ◽  
Base Plate ◽  
Seam Tracking ◽  
Welding Parameter ◽  
Motion Controller ◽  
Side Plate ◽  
Image Information ◽  
Time Motion ◽  
Welding Torch

To overcome the problems resulting from weldment trimming and assemble errors, thermal deformation, arc blow, etc., a set of new tracking system of fillet seam for automatic corrugated plate welding was put forward based on machine vision technology. The tracking system included two cameras: the precursor was set in front of the welding torch (a corrugation cycle far away), for capturing the linear laser projected on the side plate and the base plate; the another one was installed over the melting pool for capturing the image of welding torch tip and the seam. The processed image information from the precursor camera was used to track the fillet seam three-dimensional trajectory and the seam width, according to the information the welding motion controller and the welding power made preplanning; the processed torch tip and seam image information was sent to the motion controller and the welding power so that they could make real-time motion and welding parameter adjustment. Computer simulation proved that this new tracking system could work efficiently.

Seeker optimization algorithm for optimal control of manipulator

2016 ◽  
Vol 43 (6) ◽  
pp. 677-686 ◽  
Author(s):  
Chunchao Chen ◽  
Jinsong Li ◽  
Jun Luo ◽  
Shaorong Xie ◽  
Hengyu Li
Keyword(s):  
Optimization Algorithm ◽  
Fuzzy Logic Controller ◽  
Robot Manipulator ◽  
Response Speed ◽  
Performance Comparison ◽  
Content Type ◽  
And Control ◽  
Seeker Optimization Algorithm ◽  
Control Accuracy ◽  
Motor Model

Purpose This paper aims to improve the adaptability and control performance of the controller, a proposed seeker optimization algorithm (SOA) is introduced to optimize the controller parameters of a robot manipulator. Design/methodology/approach In this paper, a traditional proportional integral derivative (PID) controller and a fuzzy logic controller are integrated to form a fuzzy PID (FPID) controller. The SOA, as a novel algorithm, is used for optimizing the controller parameters offline. There is a performance comparison in terms of FPID optimization about the SOA, the genetic algorithm (GA), particle swarm optimization (PSO) and ant colony optimization (ACO). The DC motor model and the experimental platform are used to test the performance of the optimized controller. Findings Compared with GA, PSO and ACO, this novel optimization algorithm can enhance the control accuracy of the system. The optimized parameters ensure a system with faster response speed and better robustness. Originality/value A simplified FPID controller structure is constructed and a novel SOA method for FPID controller is presented. In this paper, the SOA is applied on the controller of 5-DOF manipulator, and the validation of controllers is tested by experiments.

Analysis of Inverter Energy Storage Welding Waveform Control

2013 ◽  
Vol 846-847 ◽  
pp. 710-713
Author(s):  
Lei Ni ◽  
Dong Hai Cheng ◽  
Qi Li
Keyword(s):  
Energy Storage ◽  
High Frequency ◽  
Spot Welding ◽  
Pulse Current ◽  
Welding Parameter ◽  
Experiment Data ◽  
Waveform Control ◽  
The Stability ◽  
The Given ◽  
Frequency Pulse

The inverter energy storage spot welding machine with wave control can weld initiating explosive device of aerospace system, and guarantee a stable and reliable welding quality by high frequency pulse current. Beginning with theoretical basis of inverter high frequency pulse current welding, the paper analyzes the given signal of inverter hardware, welding parameter and other experiment data to ensure the stability and safety of inverter energy storage spot waveform control.

Numerical investigation of built-up cold-formed steel beams connected by spot welding

2019 ◽  
Author(s):  
Viorel Ungureanu ◽  
Ivan Lukačević ◽  
Ioan Both ◽  
Mircea Burca
Keyword(s):  
Spot Welding ◽  
Welding Process ◽  
Experimental Program ◽  
Steel Beams ◽  
Research Project ◽  
Steel Sheets ◽  
Corrugated Web ◽  
Cold Formed Steel ◽  
The Stability ◽  
Shear Panel

<p>Built-up cold-formed steel elements are efficient structural elements, very attractive due to material savings, but also for ease of construction. The connection between the built-up beam components can be easily obtained by screws, but the developments in the welding process also led to other solutions like spot welding. The WELLFORMED research project, conducted within the CEMSIG Research Center of the Politehnica University of Timisoara, proposes to study a new technological solution for built-up beams made of corrugated steel sheets for the web and thin-walled cold-formed steel profiles for the flanges, connected by spot welding. Within the research project, the experimental work included tensile-shear tests on the lap joint welded specimens, where different combinations of steel sheets with various thicknesses were tested and, tests on two full-scale beams in bending. The paper briefly summarizes the results of the experimental program and extends the research by numerical analyses to demonstrate the potential of this solution for standardization and industrial manufacturing. Based on the validation of the numerical model, the paper presents the influence of several parameters i.e.: (1) the initial imperfections, (2) the number and distance between spot welding on flanges, (3) the thickness of the flanges, (4) the thickness of the corrugated web and (5) the thickness of the shear panel. From the parametric study, it results that the bearing capacity of the corrugated web beams made of cold-formed steel components is highly affected by the stability of the components and less affected by the configuration and the number of spot welding.</p>

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