Introduction Flashcards
a device or mechanism used to regulate or guide the operation of a machine, apparatus, or system.
Control
interdependent group of items forming a unified whole or serving a common purpose.
System
combination of elements arranged for the purpose of obtaining a desired output with desired performance, given a specified input (Norman Nise).
Control System
the input (____________ signal) r control the output (____________ variable) y through a ________ action process
actuating, controlled, control
Brief History of Automatic Control
300 - 1 BC: float regulator mechanisms in Greece for ___________.
Liquid Level Control
water clock
250 BC: liquid level control in an ____________
Liquid Level Control
oil lamp
1647-1712: Dennis Papin invented the first ____________.
Steam Pressure and Temperature Control
pressure regulator
1745: speed control was applied to a ________ by Edmund Lee
Speed Control
windmill
1769: James Watt’s flyball governor invented to control the speed of ____________.
Speed Control
steam engines
1874: Henry Bessemer, using a ________ to sense a ship’s motion and applying power generated by the ship’s ____________ system.
Speed Control
gyro, hydraulic
1922: Nicolas Minorsky wrote for the first time the mathematical law applied to the automatic steering of ships that led to what we call today ____________________
Twentieth-Century Developments
proportional-integral-derivative (PID)
late 1920s - early 1930s: H.W. Bode and H. Nyquist at Bell Telephone Laboratories developed the analysis of ____________
Twentieth-Century Developments
feedback amplifiers
1965: ________________ controller were first introduced by Professor Lotfi Zadeh, and have gained popularity due to their adaptability and high performance.
Twentieth-Century Developments
Fuzzy logic
1990s: Manufacturing companies emphasize ____________.
Twentieth-Century Developments
automation
Present: ________________ technologies are helping advance the next generation of some control systems.
Twentieth-Century Developments
artificial intelligence (AI)