- published: 19 May 2008
- views: 71938
Automatic control is the application of control theory for regulation of processes without direct human intervention. In the simplest type of an automatic control loop, a controller compares a measured value of a process with a desired set value, and processes the resulting error signal to change some input to the process, in such a way that the process stays at its set point despite disturbances. This closed-loop control is an application of negative feedback to a system. The mathematical basis of control theory was begun in the 18th century, and advanced rapidly in the 20th.
Designing a system with features of automatic control generally requires the feeding of electrical or mechanical energy to enhance the dynamic features of an otherwise sluggish or variant, even errant system. The control is applied by regulating the energy feed.
Automatic control can self-regulate a technical plant (such as a machine or an industrial process) operating condition or parameters by the controller with minimal human intervention. A regulator such as a thermostat is an example of a device studied in automatic control.
Another possible example of Automatic Control are the ABS of a car.
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How to build simple automatic water-level controller. by Nithin Mohan.
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Adriano Arcadipane: Roll gyro stabilized rocket with automatic control system. Aerospace Engineering
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From the ancient Egyptians to steam ships to the Saturn V rocket, automatic control engineering makes it all possible. Harold Chestnut was a pioneer in automatic control from WW2 onward. He helped found IFAC and the IEEE (merger of AIEE and IRE). This video is an excerpt from our documentary on his life during the most momentous era of the 20th century.
follow me : http://nithinmohann.wordpress.com/ its a video about , how to build simple and advanced water level controller, with level indicator and overflow safety alarm. it's one of my home project. This device is for, automatically control the water level in the over head tank. if the water level is low, automatically turns on the pump motor, when its full, circuit automatically stops the pump motor. This device also indicates, water level in the tank, shows how much water is available in the tank. Another feature is, its beeps an Alarm, in overflow, in case of system failure or manual filling.
Lehrfilm
Contact me: arcadipane.degree@gmail.com More info and photos at: http://www.rocketryforum.com/showthread.php?35679-Active-roll-control-system-Success ENGLISH: This video is a summary of my master's degree thesis in aerospace engineering from Università degli Studi di Palermo (Italy). Rockets spin about their longitudinal axis due to imperfect alignments in construction. This behavior could be a problem for telemetric systems or when guidance control on the other two axes are used. In my thesis I designed, made and tested an automatic control system to negate the angular roll speed of a model rocket. The system uses two control fins (aerodynamic control) moved by a flight computer equipped with a 3DOF gyroscope, an accelerometer and an atmospheric pressure sensor. I entirely scratch built...
MIT Electronic Feedback Systems (1985) View the complete course: http://ocw.mit.edu/RES6-010S13 Instructor: James K. Roberge License: Creative Commons BY-NC-SA More information at http://ocw.mit.edu/terms More courses at http://ocw.mit.edu
A demonstration video of our project in the automatic control project course EL2421 at KTH, Stockholm Sweden. Physical and virtual autonomous vehicles are interacting with each other on the projected map. Positions are tracked with a motion capture system from Qualisys and control loops are implemented in LabVIEW. The white truck is a virtual model of a real scania truck running in a realtime simulator machine (xPC target). The floor projection is running on a separate PC receiving packets from the main program in LabVIEW using UDP.
Except for taking off and landing, the control of the quadcopter is fully automatic. The ground computer vision system provides real-time feedback of (x, y, z, pitch, roll, yaw) coordinates to the quadcopter to control itself. The quadcopter also uses on board IMU and sonar to carry out fine grain control. Developers (Alphabetical Order): Yanming Chen, Zhijian He, Enyan Huang, Shunxing Li, Zhaoyan Shen, Jiachen Zhu Directing Teachers (Alphabetical Order): Yao Chen, Muhammad Umer Khan, Shuai Li, Zili Shao, Qixin Wang
Lecture Series on Industrial Automation and Control by Prof. S. Mukhopadhyay, Department of Electrical Engineering, IIT Kharagpur. For more Courses visit http://nptel.iitm.ac.in
From the ancient Egyptians to steam ships to the Saturn V rocket, automatic control engineering makes it all possible. Harold Chestnut was a pioneer in automatic control from WW2 onward. He helped found IFAC and the IEEE (merger of AIEE and IRE). This video is an excerpt from our documentary on his life during the most momentous era of the 20th century.
follow me : http://nithinmohann.wordpress.com/ its a video about , how to build simple and advanced water level controller, with level indicator and overflow safety alarm. it's one of my home project. This device is for, automatically control the water level in the over head tank. if the water level is low, automatically turns on the pump motor, when its full, circuit automatically stops the pump motor. This device also indicates, water level in the tank, shows how much water is available in the tank. Another feature is, its beeps an Alarm, in overflow, in case of system failure or manual filling.
Lehrfilm
Contact me: arcadipane.degree@gmail.com More info and photos at: http://www.rocketryforum.com/showthread.php?35679-Active-roll-control-system-Success ENGLISH: This video is a summary of my master's degree thesis in aerospace engineering from Università degli Studi di Palermo (Italy). Rockets spin about their longitudinal axis due to imperfect alignments in construction. This behavior could be a problem for telemetric systems or when guidance control on the other two axes are used. In my thesis I designed, made and tested an automatic control system to negate the angular roll speed of a model rocket. The system uses two control fins (aerodynamic control) moved by a flight computer equipped with a 3DOF gyroscope, an accelerometer and an atmospheric pressure sensor. I entirely scratch built...
MIT Electronic Feedback Systems (1985) View the complete course: http://ocw.mit.edu/RES6-010S13 Instructor: James K. Roberge License: Creative Commons BY-NC-SA More information at http://ocw.mit.edu/terms More courses at http://ocw.mit.edu
A demonstration video of our project in the automatic control project course EL2421 at KTH, Stockholm Sweden. Physical and virtual autonomous vehicles are interacting with each other on the projected map. Positions are tracked with a motion capture system from Qualisys and control loops are implemented in LabVIEW. The white truck is a virtual model of a real scania truck running in a realtime simulator machine (xPC target). The floor projection is running on a separate PC receiving packets from the main program in LabVIEW using UDP.
Except for taking off and landing, the control of the quadcopter is fully automatic. The ground computer vision system provides real-time feedback of (x, y, z, pitch, roll, yaw) coordinates to the quadcopter to control itself. The quadcopter also uses on board IMU and sonar to carry out fine grain control. Developers (Alphabetical Order): Yanming Chen, Zhijian He, Enyan Huang, Shunxing Li, Zhaoyan Shen, Jiachen Zhu Directing Teachers (Alphabetical Order): Yao Chen, Muhammad Umer Khan, Shuai Li, Zili Shao, Qixin Wang
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