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Proportional control is a type of linear feedback control system in which a correction is applied to the controlled variable which is proportional to the difference between the desired value (SP) and the measured value (PV). Two classic mechanical examples are the toilet bowl float proportioning valve and the fly-ball governor.
In scientific computing, BLIS (BLAS-like Library Instantiation Software) [2] [3] [4] [5] is an open-source framework for implementing a superset of BLAS (Basic Linear ...
In the case of linear feedback systems, a control loop including sensors, control algorithms, and actuators is arranged in an attempt to regulate a variable at a setpoint (SP). An everyday example is the cruise control on a road vehicle; where external influences such as hills would cause speed changes, and the driver has the ability to alter ...
Every control system must guarantee first the stability of the closed-loop behavior. For linear systems, this can be obtained by directly placing the poles. Nonlinear control systems use specific theories (normally based on Aleksandr Lyapunov's Theory) to ensure stability without regard to the inner dynamics of the system. The possibility to ...
Free: Linux, Windows: DIANA FEA: General purpose finite element package utilised by civil, structural and geotechnical engineers. DIANA FEA BV, The Netherlands: 10.1: 2016-11-14: Proprietary commercial software: Paid: Windows, Linux: deal.II: Comprehensive set of tools for finite element codes, scaling from laptops to clusters with 100,000+ cores.
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It is an approach for the control of non-linear systems that uses a family of linear controllers, each of which provides satisfactory control for a different operating point of the system. One or more observable variables, called the scheduling variables , are used to determine the current operating region of the system and to enable the ...