Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 31 for “"machine control"”.
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Axiomatic development of a machine control system
… a scientific methodology in designing a complex machine control system. As an example, the CMP a machine control system is developed using the Axiomatic Design framework. The machine is a type of semiconductor processing equipment, which requires numerous actuators and sensors and the intelligent …
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High performance induction machine control: Methods, limits and solutions
… discusses various high performance induction machine control methods and provides methods for improved performance. Parameter sensitivity analyses on the discussed control methods are given. Practitioners have reported performance degradation during high speed DTC operation, including …
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A gestalt framework for virtual machine control of automated tools
… tools, including 3D printers and desktop milling machines. Simultaneously, groups of individuals and organizations are establishing community workshops where resources can be pooled to acquire industrial-grade machinery. Both of these approaches have been successful at increasing the penetration …
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Three dimensional printing : machine control from CAD model to nozzles
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1991.
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Design of a Modern, Low Cost, Expandable, Open Architecture Grinding Machine Control System
An expandable, extendable grinding machine controller has been researched and designed, in order to take advantage of recent improvements in the functionality and affordability of commercial electronic hardware. In additional it would provide for the incorporation of previous research studies and …
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Development of a Windows NT real-time operating system for NC machine control
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1997.
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An Integrated Control and Data Acquisition System for Pharmaceutical Capsule Inspection
… industry. Their current methods of quality control of their product is by performing manual inspection of every carton of capsules prior to shipment. In today's modern manufacturing world, more efficient and cost-effective means of quality control exist. It is Pharmaphil's desire to develop …
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Selection of a device level fieldbus for the paper converting industry
… on the selection of an optimum fieldbus for machine control within the paper converting industry, in particular Georgia Pacific's plant in South Wales. In addition to this, the benefits of the optimum fieldbus are considered against the existing proprietary network and a recommendation …
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Distributed dispatchers for partially clairvoyant schedulers
… areas like safety critical systems, robotics and machine control, real-time data management, and this approach is targeted at powering up the controllers.
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Productivity improvement in a dyehouse in the textiles industry
… contributing to product quality should be controlled, were applied. In addition, work study techniques were used to improve process flow, planning and batch sizes. A number of conclusions and recommendations were made: there are no major obstacles to successful first-time dyeing; the …
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Miniature automated flexible manufacturing system
… an active interest in incorporating automated machines in their laboratory programs. Automated manufacturing machines are, in general, much too large and expensive for universities to consider purchasing, housing, or operating. Thus, it is necessary for universities to develop scaled-down …
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Statistical Investigation of Friction Stir Processing Parameter Relationships
… understand the process and implement proper machine control. This study utilized a 3-factor, 3-level factorial design of experiments to investigate relationships between key process inputs and measured output parameters. All experiments utilized 7075-T7 aluminum and a threaded pin tool with a …
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STPA Hazard Analysis of Human Supervisory Control of Multiple Unmanned Aerials Systems
… operations are shifting from multiple operators controlling a single-UAS to a single operator supervising multiple-UAS engaged in complex mission sets. To enable this paradigm change, there is wide consensus in the literature that limitations in human cognitive capacity require shifting low-level …
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Preliminary investigation of the use of electromyographic signal for the control of a prosthetic ankle
The overarching goal of this work is to develop a control algorithm that will allow an active prosthetic ankle to emulate its biological equivalent. The current convention for below-knee amputees is to use passive ankles. Previous work exists in active ankles under state machine control and active …
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Modeling, simulation, and control design of electro-mechanical dynamics in heterogeneous power systems
… generators and grid forming inverters with droop control, virtual synchronous machine control, and dispatchable virtual oscillator control is developed. To mitigate model complexity and facilitate analytical understanding, this framework employs reduced-order models that are applicable for …
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Biomimetic design for an under-actuated leg exoskeleton for load-carrying augmentation
… in the sagittal plane consist of a force-controllable actuator at the hip, a variable-damper mechanism at the knee and a passive spring at the ankle. A state-machine control strategy is written based on joint angle and ground-exoskeleton force sensing. Positive, non-conservative power is …
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Localization and tracking of high-speed trains using compressed sensing based 5G localization algorithms
… requirements set out by 3GPP for the use case of machine control and intelligent transportation are met with just one Remote-Radio-Head.
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A semi-autonomous mobile robot/teleoperator with applications as an aid for severely handicapped people
… which can allow severely handicapped people to control and interact with their home and work environments is presented. Software written for a personal computer allows the user to command a robot to move about a structured indoor environment as well as control household appliances. Underlying …
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Direct digital control of D.C. machines
… out to improve on previous methods of digital control of a three phase fully controlled thyristor bridge, using phase control of the thyristors, and to use this bridge for the purpose of controlling the speed of a separately excited D. C. machine, under the supervision of a small digital …
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