Integrator
Encyclopedia : I : IN : INT : Integrator
An integrator is a device to perform the mathematical operation known as integration, a fundamental operation in calculus.
The integration function is often part of engineering, physics, mechanical, chemical and scientific calculations.
Integrator in signal processing
Electronic devices have been constructed to perform integration (usually with respect to time) of signals. This operation is equivalent to a first-order low-pass filter, which can be performed in the continuous-time (analog) domain or approximated (simulated) in the discrete-time (digital) domain.
See also Integrator at op amp applications.
Integrator in molecular dynamics
In molecular dynamics, an integrator is a numerical method for integrating trajectories from forces (and thereby accelerations) that are only calculated at discrete time steps. The most basic and least accurate kind of numerical integration is Euler integration. Verlet integration improves the accuracy of the integration to within fourth-order Taylor series terms, and the Runge-Kutta method which is gaining popularity further improves this accuracy to within fifth-order Taylor series terms.
See also
- Fractional order integrator
- analog computer
- operational amplifier
- signal processing
- lowpass filter
- planimeter
External links
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