Modeling for the Control of the Laser Aided Manufacturing Process (LAMP)

Many state-of-the-art Rapid Prototyping (RP) technologies adopt lasers to fabricate 3-D solid parts by material deposition in layers. The ability of these RP technologies to control the process requires a thorough understanding of the process mechanics. This paper presents the analysis of an analytical, dynamic model explaining the complex phenomenon of Laser Aided Manufacturing Process (LAMP). The equilibrium of the dynamic model is analyzed and dynamic simulations are performed to determine its stability characteristics. This model forms the basis for the real-time control of the LAMP

Control of Laser Cladding for Rapid Prototyping--a Review

Lasers have wide–ranging applications in the manufacturing field (e.g., cladding, welding, cutting, machining, drilling). Extensive work is being conducted to apply laser cladding as a Rapid Prototyping (RP) process. In this paper the authors illustrate various principles of laser cladding in rapid prototyping. Important process parameters for the control of the laser cladding process are discussed as well as the experimental methods adopted, and results obtained by, various authors.Mechanical Engineerin

System integration and control oriented modeling of the laser aided manufacturing process (LAMP)

Laser Aided Manufacturing Process (LAMP) is a technology that is being developed at University of Missouri-Rolla to fabricate 3D parts directly from CAD model. This thesis describes the integration of subsystems for development of the hybrid system and modeling of the LAMP process. These issues are outlined as follows: a) System Integration and Real-time Control Architecture: A description about the various subsystems and their integration to build the hybrid system is given. A software architecture for coordination of various modules (process planner, interpreter, diagnostics and supervision, etc.) is presented. A real-time control architecture for regulating the process variables governing the LAMP is proposed. b) Control Oriented Modeling of LAMP: A review of various works involving the application of laser cladding principle for Rapid Prototyping (RP) is included. Also the control techniques applied for regulating the process parameters governing the laser cladding process for RP is discussed. A control oriented model describing the process dynamics of the LAMP is developed. The equilibrium of the dynamic model is analyzed and dynamic simulations are performed to determine its stability characteristics --Abstract, page iv

Empirical Modeling and Vision Based Control for Laser Aided Metal Deposition Process

This paper gives a brief description of the laser aided manufacturing process. Empirical models describing the process dynamics of the laser aided metal deposition process is developed based on some of the models found in the literature. These models provide the basis for process planning and real time control. An embedded vision system, a two color temperature sensor, and a laser displacement sensor are incorporated for real time monitoring and control of the deposition process. The temperature profile of the surface and geometric characteristics of the melt pool are studied to ensure consistent operation of the process

System Integration and Real-Time Control Architecture of a Laser Aided Manufacturing Process

This paper discusses a hybrid deposition–removal manufacturing system being developed at the University of Missouri--Rolla. The system consists of a laser system, five-axis CNC machining center, and powder feeder system. A description of the control software, real-time control architecture, and integration of various subsystems to build the hybrid system is given. The interaction of the real-time controller with various sensors and subsystems to monitor and regulate the process is presented. The communication between integrated process planning for the system and real–time control is also discussed in this paper