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Full-Text Articles in Controls and Control Theory
A Redundant Monitoring System For Human Welder Operation Using Imu And Vision Sensors, Rui Yu
A Redundant Monitoring System For Human Welder Operation Using Imu And Vision Sensors, Rui Yu
Theses and Dissertations--Electrical and Computer Engineering
In manual control, the welding gun’s moving speed can significantly influence the welding results and critical welding operations usually require welders to concentrate consistently in order to react rapidly and accurately. However, human welders always have some habitual action which can have some subtle influence the welding process. It takes countless hours to train an experienced human welder. Using vision and IMU sensor will be able to set up a system and allow the worker got more accurate visual feedback like an experienced worker.
The problem is that monitor and measuring of the control process not always easy under a …
Visual Attitude Propagation For Small Satellites, Samir Ahmed Rawashdeh
Visual Attitude Propagation For Small Satellites, Samir Ahmed Rawashdeh
Theses and Dissertations--Electrical and Computer Engineering
As electronics become smaller and more capable, it has become possible to conduct meaningful and sophisticated satellite missions in a small form factor. However, the capability of small satellites and the range of possible applications are limited by the capabilities of several technologies, including attitude determination and control systems. This dissertation evaluates the use of image-based visual attitude propagation as a compliment or alternative to other attitude determination technologies that are suitable for miniature satellites. The concept lies in using miniature cameras to track image features across frames and extracting the underlying rotation.
The problem of visual attitude propagation as …
An Attitude Determination System With Mems Gyroscope Drift Compensation For Small Satellites, Maxwell Bezold
An Attitude Determination System With Mems Gyroscope Drift Compensation For Small Satellites, Maxwell Bezold
Theses and Dissertations--Electrical and Computer Engineering
This thesis presents the design of an attitude determination system for small satellites that automatically corrects for attitude drift. Existing attitude determination systems suffer from attitude drift due to the integration of noisy rate gyro sensors used to measure the change in attitude. This attitude drift leads to a gradual loss in attitude knowledge, as error between the estimated attitude and the actual attitude increases.
In this thesis a Kalman filter is used to complete sensor fusion which combines sensor observations with a projected attitude based on the dynamics of the satellite. The system proposed in this thesis also utilizes …