period: An interval of time characterized by the occurrence of a certain condition, event, or phenomenon.
By using second-order averaging method,this paper analyzes the primary resonance bifurca- tion and period-doubling bifurcation in a single-machine infinite-bus power system disturbed by a periodic load,which changes the problems of periodic orbit bifurcations into those of equilibrium bifurcations. 文...
The equation is- f=1/2π√g/L. Period (T) of a simple pendulum is T=2π√L/g. A simple pendulum consists of a mass (m) hanging from a string of length (L) and fixed at a pivot point (P). When it is displaced to an initial angle and then it is released, the pendulum ...
Using the equation P2 = (4 * pi2 * a3)/(G(M+m)) to find the orbital period of Earth where: P = orbital period a = semi-major axis = 1.50e11 m G =...
Our analysis reduces the infinite-dimensional delay-equation governing the system with feedback to a three-dimensional map, by making certain assumptions about the form of the solutions. The stability of a fixed point in this map corresponds to the stability of the periodic orbit in the flow, ...
The period of a wave is the time for a particle on a medium to make one complete vibrational cycle. Period, being a time, is measured in units of time such as seconds, hours, days or years. The period of orbit for the Earth around the Sun is approximately 365 days; it takes 365 ...
The stability of a fixed point in this map corresponds to the stability of the periodic orbit in the flow, and can be computed analytically. We compare the analytic results to a numerical example and find very good agreement. 展开 关键词: feedback control, heteroclinic cycle, delay equation ...
A sidereal period is the time it takes a celestial body such as a planet to complete an orbit, as measured against the background of the fixed stars. Sidereal months (the time it takes the Moon to complete an orbit) and sidereal years (the time it takes Earth to complete an orbit) ar...
Let us investigate the impact of eq.(1) on the anomalistic period of a test particle. To this aim, we must consider the Gauss equation for the mean anomaly. In the case of a purely radial perturbing acceleration A, it reduces to dM dt = n − 2 na A r a + (1 −e 2 ) na...
Here, we show that a fraction of long-period comets are tidally disrupted after passing close to the Sun, each producing a collection of smaller fragments that cross the orbit of Earth. This population could increase the impact rate of long-period comets capable of producing Chicxulub impact ...