Welding current and arc voltage control in a GMAW process using ARMarkov based MPC

Anzehaee, Mohammad Mousavi; Haeri, ءMohammad

doi:10.1016/j.conengprac.2011.07.015

Cited by 41 publications

(9 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Table 3. Parameters and some variables of the GMAW process model used in the simulations for carbon steel [13]. The arc current-arc voltage relationship has been obtained for these parameters as shown in Figure 11.…”

Section: Simulation Resultsmentioning

confidence: 99%

“…It is highly efficient and it can be used to weld any material of any thickness in any position with the possibility of automatic implementation. GMAW nowadays is considered the most popular type of arc welding process [3,12,13]. Figure 3 shows a schematic that represents the GMAW process.…”

Section: Load Behavior Of the Gmaw Systemmentioning

confidence: 99%

“…The positive terminal of this power source is connected to the welding electrode while the negative one is connected to the workpiece or vice versa. At the steady state when the arc current (I arc ) and the arc length (l arc ) are positive, the arc voltage (V arc ) and arc power functions that generate arc energy for making a metal joint can be expressed as follows [3,[12][13][14]:…”

Section: Modeling Of the Gmaw Processmentioning

confidence: 99%

See 2 more Smart Citations

Design of A Series Resonant Converter GMAW Welding Machine by Using the Harmonic Current Technique for Power Transfer

2019

View full text Add to dashboard Cite

This paper proposes the use of a control algorithm that can yield soft switching both at turn-on and turn-off of the inverter of series resonance converter (SRC) gas metal arc welding (GMAW) machines. The technique takes advantage of the band-pass filter characteristics of the SRC and controls the power by using switching frequencies that are subharmonics of the resonance frequency. The design and the experimental results for a 5 kW prototype system are given to prove that the algorithm can be used in GMAW systems.

show abstract

Section: Simulation Resultsmentioning

confidence: 99%

Section: Load Behavior Of the Gmaw Systemmentioning

confidence: 99%

Section: Modeling Of the Gmaw Processmentioning

confidence: 99%

See 1 more Smart Citation

Design of A Series Resonant Converter GMAW Welding Machine by Using the Harmonic Current Technique for Power Transfer

2019

View full text Add to dashboard Cite

show abstract

“…Unlike the existing methods that control the heat and mass transfer by manipulating the arc current and arc voltage in either continuous [8] or pulsed form, heat input P c , melting rate MR, and detaching droplet diameter D bdb are controlled as output variables in the proposed method. These variables, unlike the previous ones, are directly related to G, H, and weld quality.…”

Section: Introductionmentioning

confidence: 96%

A new method to control heat and mass transfer to work piece in a GMAW process

Anzehaee

Haeri

2012

Journal of Process Control

Self Cite

View full text Add to dashboard Cite

“…Control of arc gap through robotic TIG welding was done by Karafi et al (2010). Current and voltage control have been exercised in Gas Metal Arc Welding Process (Anzehaee and Haeri, 2011). Many researchers have used weld bead as a control parameter (Murugana and Gunaraj, 2005).…”

Section: Literature Reviewmentioning

confidence: 99%

A Novel Method to Improve Weld Uniformity by Automatic Control of Current Intensity

Morgan¹,

Al-Mufadi²

2015

American Journal of Engineering and Applied Sciences

View full text Add to dashboard Cite

This study aims to develop an automatic arc welding system capable of welding irregular and moving joints which are difficult to weld manually. The motivation of this research comes from the need to produce uniforms weldings on regular and irregular surfaces by automatic means. The system consists of a personal computer equipped with A/D interface card connected to an electric current sensor and two electric motors controlled via electronic circuits. A control program receives the electric current measurements and makes the necessary calculations for the correct vertical motion of the welding electrode. A modified PID controller was used to control the process dynamics. An X-Y mechanism with two electric motors was developed to control the motion of the electrode as well as the work piece. A comparison was made between two welded specimens; one was welded by traditional manual method and, the second by using automatic control mechanism. The weld distribution through the welded joints was compared. Different irregular joints were also compared for the manual and automatic control welding methods. It was found that the control system works with an accuracy of ±28 µm for a 1.01 mm weld thickness of a flat weld by controlling the current at 60 A within a standard deviation of ±1.45 A. As a result welds with uniform thickness were obtained. The uniform heating further contributes to a uniform microstructure in the weld area. The implications of this research will be enhanced automation of the welding process in industry, with improved control over its uniformity, especially while welding around circular objects and during vibrating or unstable conditions.

show abstract

Welding current and arc voltage control in a GMAW process using ARMarkov based MPC

Cited by 41 publications

References 16 publications

Design of A Series Resonant Converter GMAW Welding Machine by Using the Harmonic Current Technique for Power Transfer

Design of A Series Resonant Converter GMAW Welding Machine by Using the Harmonic Current Technique for Power Transfer

A new method to control heat and mass transfer to work piece in a GMAW process

A Novel Method to Improve Weld Uniformity by Automatic Control of Current Intensity

Contact Info

Product

Resources

About