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Showing 1 to 8 of 8 for “"Closed loop process control"”.
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In-line process measurements for injection moulding control. In-line rheology and primary injection phase process measurements for injection moulding of semi-crystalline thermoplastics, using instrumented computer monitored injection moulding machines, for potential use in closed loop process control
In-line rheological and process measurements are studied, during the primary injection phase, as a potential aid to closed loop process control for injection moulding. The feasibilities of attaining rheological and process measurements of sufficient accuracy and precision for use in process control …
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High Temperature Seismic Monitoring for Enhanced Geothermal Systems - Implementing a Control Feedback Loop to a Prototype Tool by Sandia National Laboratories
… a bore-hole wall. Additionally, development of a closed-loop process control utilized feedback from the contact force between the coupling arm and bore-hole wall. Employing a feedback circuit automates the tool deployment/anchoring process and reduces reliance on the operator at the surface. The …
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Development of a Variational Part Model Using In-Process Dimensional Measurement Error
… real phenomenon and are dependent on continuous process monitoring using a variety of sensors. Closed-loop process control is a scheme for manufacturing parts and compensating for on-line disturbances and machine tool inaccuracies using error feedback. The goal has been to develop a system that …
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Distributed Newton-Seeking for Resource Allocation
Real-time optimization (RTO) is a category of closed-loop process control techniques that is focused on the improvement of process performance. To develop effective strategies, models of the systems are usually required. To circumvent this issue, model-free techniques such as Extremum-seeking …
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Repetitive process control of additive manufacturing with application to laser metal deposition
… Manufacturing (AM) is a set of manufacturing processes which has promise in the production of complex, functional structures that cannot be fabricated with conventional manufacturing and the repair of high-value parts. However, a significant challenge to the adoption of additive manufacturing …
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A layer tension loss and cure model for filament wound composites
… simulation program FWCURE [1] models the curing process and layer tension loss of axisymmetric filament wound composite cases during fabrication. For a specified temperature cure cycle, the model predicts the temperature distribution, resin degree of cure, viscosity, layer compaction, and fiber …
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Sensor-based Characterization and Control of Additive Biomanufacturing Processes
… organs using additive biomanufacturing (Bio-AM) processes. While progress toward industrial-scale production of 3D-bioprinted tissue models and organs remains hindered by various biological and tissue engineering challenges, such as vascularization and innervation, quality Bio-AM is impeded by …
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Machine learning-based stress-strain prediction and process parameter optimisation in material extrusion additive manufacturing
… However, the layer-by-layer deposition process inherent in this technique results in considerable variability in mechanical performance. Among the most critical challenges is the difficulty in accurately predicting and controlling the full stress-strain behaviour of the printed parts. A …