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U-tube with piezo-electric actuator Digital density measuring principle. The oscillating U-tube is a technique to determine the density of liquids and gases based on an electronic measurement of the frequency of oscillation, from which the density value is calculated.
DeWalt Ford Fusion in 2008, driven by Matt Kenseth.. DeWalt Tools sponsored NASCAR driver Matt Kenseth from 1999 through to the season of 2009. In this time period, Kenseth won 18 races, the 2000 Sprint Cup Rookie of the Year Award, 2003 Winston Cup Series Championship, 2004 NEXTEL Cup All Star Race and the 2009 Daytona 500.
An example of an underdamped second order system is a spring–mass system, where the mass can bob up and down (oscillate) when hanging from a spring. If shimmy cannot be designed out of the system, a device known as a steering damper may be used, which is essentially a notch filter designed to damp the shimmy at its known natural frequency.
Coupled oscillators are a common description of two related, but different phenomena. One case is where both oscillations affect each other mutually, which usually leads to the occurrence of a single, entrained oscillation state, where both oscillate with a compromise frequency. Another case is where one external oscillation affects an internal ...
A crystal oscillator is an electronic oscillator circuit that uses a piezoelectric crystal as a frequency-selective element. [1] [2] [3] The oscillator frequency is often used to keep track of time, as in quartz wristwatches, to provide a stable clock signal for digital integrated circuits, and to stabilize frequencies for radio transmitters and receivers.
A pendulum with its bob hanging directly below the support pivot is at a stable equilibrium point, where it remains motionless because there is no torque on the pendulum. If displaced from this position, it experiences a restoring torque that returns it toward the equilibrium position.
Oscillation of a sequence (shown in blue) is the difference between the limit superior and limit inferior of the sequence. In mathematics, the oscillation of a function or a sequence is a number that quantifies how much that sequence or function varies between its extreme values as it approaches infinity or a point.
Pilot-induced oscillation rating scale, with start position at bottom left. Pilot-induced oscillations (PIOs), as defined by MIL-HDBK-1797A, [1] are sustained or uncontrollable oscillations resulting from efforts of the pilot to control the aircraft.