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 45 for “"feedback control system"”.
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A feedback control system for electron beam welding guns
Thesis (B.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering, 1964.
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Self-Oscillations in a Relay Feedback Control System Containing Transportation Delay
Made available in DSpace on 2014-12-04T21:03:27Z (GMT). No. of bitstreams: 1 6202952.pdf: 2235922 bytes, checksum: 45137b77f0e9fd265c58c8ea227529f8 (MD5) Previous issue date: 1962
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Improving Ink Feedback Control System for Vision Controlled Jetting 3D Printer
Vision-Controlled Jetting (VCJ) is one of the 3D-printing techniques that operates by repeatedly depositing photopolymer materials in 2 dimensions onto a printing plane, solidifying them using UV light, and scanning the printing plane’s topography to readjust the printing layer accordingly. It has …
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Computer simulation of a large-scale non-linear feedback control system
… Antenna Compensation Network. This network is a feedback control system that filters out the effects of surface ship motion on a weapon's response to commands from the ship's fire control center. The network includes a number of non-standard elements that prevent mathematical prediction of its …
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Automation of Single Cell Micromanipulation and Microsurgery for Blastocyst Embryo Biopsy
… strategies mandates the development of automated systems to achieve high throughput with high success rates. This thesis presents novel methods for the automation of the blastocyst embryo biopsy steps, using the conventional tools currently available in the research labs and the in vitro …
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System identification of a hydraulically-actuated robot
A feedback control system has been developed to operate an elastic robot arm. This work was funded by a grant from the U.S. Army Research Office. The goal of this investigation was to experimentally determine the operating curves, performance plots, and flow coefficients needed to produce an …
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A conceptual framework for using feedback control within adaptive traffic control systems
Existing adaptive traffic control strategies lack an effective evaluation procedure to check the performance of the control plan after implementation. In the absence of an effective evaluation procedure, errors introduced in the system such as inaccurate estimates of arrival flows, are carried …
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Electromechanical design of a body weight support system for a therapeutic robot for rodent studies
… One key element of the therapeutic robot is a system to support the partial body weight of a freely-moving rodent. This paper discusses the design requirements, fabrication, modeling, calibration and preliminary analysis of a highly back-drivable bodyweight support system prototype. In …
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Design of a Temperature Programmed Desorption System for the Measurement of the Desorption Kinetics of Molecules from Surfaces
… To perform these measurements, a computer controlled feedback control system was designed that generates linear temperature ramps. In addition, a program was written to simultaneously measure up to eight partial pressures during the temperature ramp for the TPD measurements. This TPD system …
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Holographic sensing for control of flexible structures
A state feedback control system for flexible structures implemented using a holographic sensor and optical processor is presented. Real-time holography provides a mechanism for sensing the distributed shape of a broad class of one and two-dimensional flexible structures in a form that can be …
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Numerical Investigations of the Fluid Flow and Heat Transfer and Construction of Control System for the Canadian Supercritical Water-Cooled Reactor Power Plant
… the linear dynamic model and the design of the control system for the Canadian SCWR power plant. Firstly, the fluid flow and heat transfer of the supercritical water in the vertical tube and the rod bundle is numerically investigated to evaluate whether the existing turbulent models could …
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A multi finger electromagnetic actuator apparatus for biomechanical studies on the hand
… and constructed and a position and force feedback control system was implemented for each. The maximum continuous force output for each actuator ranged from 12-16 N, which is about 15%-30% of the maximum force that can be exerted by an individual finger. The bandwidth of the controlled …
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pH control in a miniaturized bioreactor
… current miniaturized design lacks a method of pH control. Without pH control, cell growth can be hindered or even stopped altogether when the growing medium becomes too acidic. Using technology already in place to optically measure the pH inside the reactor in conjunction with a valve and a …
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Networked Predictive Control Systems: Control Scheme and Robust Stability
Networked predictive control is a new research method for Networked Control Systems (NCS), which is able to handle network-induced problems such as time-delay, data dropouts, packets disorders, etc. while stabilizing the closed-loop system. This work is an extension and complement of networked …
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Control for an optically powered firing set using miniature photovoltaic arrays
… energy to a detonator. In order for this system to be further optimized for implementation into an actual firing set, the output voltage state needs to be controlled and the temperature of the MPA and illuminating source minimized. This thesis reports on the development of an optical …
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A LabVIEW program to obtain the initiating component of a vergence eye movement in an open-loop experiment
The vergence oculomotor system is used in viewing objects moving in depth, such as when a baseball player tracks a ball moving towards him. It is composed of two components according to the Dual Mode Theory; a fast preprogrammed initiating component and a slow feedback-controlled sustaining …
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Virtual Reality Simulation of Ships and Ship-Mounted Cranes
… into consideration. A nonlinear delayed-position feedback-control system is applied to the crane and the resulting simulation is used to compare the controlled and uncontrolled pendulations of the cargo. Our simulator showed a great deal of realism and was used to simulate different ship-motion …
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Active feedback control of a wake flow via forced oscillations based on a reduced model
… saddle point. In this work, we design two active feedback control algorithms for the model based on small perturbations applied to the cylinder in order to control the flow slightly perturbed away from the fixed point. We use the domain perturbation method and asymptotic expansions to derive …
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Design of a hardware solar emulator for an experimental microgrid
… They also indicate a desired performance for the feedback control system. The controller design is discussed and the effect of load type on the closed-loop dynamics are considered. This is especially interesting for the grid-connected case. The design methodology culminates in the construction of …
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Methods and challenges of experimental system identification of a distillation column
… as a teaching tool, but is currently without a feedback control system. An eventual goal of developing such a control system requires that the behavior of the column be understood. It is necessary to identify which of the column parameters can change, either ones that change to cause a …
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