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An animation of 2008 TC3's excited rotation prior to entering the atmosphere. The asteroid was discovered by Richard A. Kowalski at the Catalina Sky Survey (CSS) 1.5-meter telescope at Mount Lemmon, north of Tucson, Arizona, US, on October 6, 06:39 UTC, 19 hours before the impact.
TC3 may refer to: Tc3 transposon, a transposon in Caenorhabditis elegans; 2008 TC3, a meteoroid that entered Earth's atmosphere on October 7, 2008; Tha Carter III, a studio album by American rapper Lil Wayne; Tompkins Cortland Community College, also abbreviated as TC3, a college in Dryden, New York, United States
This was the second time an asteroid was observed before it impacted with Earth (the first being 2008 TC3). 5 January – A launch of the communication satellite GSAT-14 from the Satish Dhawan Space Centre aboard the GSLV Mk.II D5 marks the first successful flight of an Indian cryogenic rocket engine, the CE-7.5.
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Bang–bang controls frequently arise in minimum-time problems. For example, if it is desired for a car starting at rest to arrive at a certain position ahead of the car in the shortest possible time, the solution is to apply maximum acceleration until the unique switching point , and then apply maximum braking to come to rest exactly at the ...
Regulators can be designed to control anything from gases or fluids, to light or electricity. Speed can be regulated by electronic, mechanical, or electro-mechanical means. Such instances include; Electronic regulators as used in modern railway sets where the voltage is raised or lowered to control the speed of the engine
This problem can be addressed by Initializing the controller integral to a desired value, for instance to the value before the problem [citation needed] Increasing the setpoint in a suitable ramp; Conditional Integration: disabling the integral function until the to-be-controlled process variable (PV) has entered the controllable region [3]
A problem with the derivative term is that it amplifies higher frequency measurement or process noise that can cause large amounts of change in the output. It is often helpful to filter the measurements with a low-pass filter in order to remove higher-frequency noise components. As low-pass filtering and derivative control can cancel each other ...