.Modelica_LinearSystems2.Controllers

Information

This package provides input/output blocks where every block is available in a continuous and a discrete (sampled) representation. A block is defined via its continuous parameterization. By specifying a discretization method and a sample time, the discrete representation is automatically derived from the continuous form. The defaults of the most important options for all blocks are set in the global SampleClock component (via inner/outer). As a result, it is, e.g., easy to switch quickly between a continuous and a discrete representation of all blocks of a controller.

Examples to demonstrate the technique are given in the package Examples. Especially, the continuous or discrete control of a simple flexible drive with a P-PI cascade controller is demonstrated in example SimpleControlledDrive.

Contents

Name	Description
UsersGuide	Controllers Tutorial
Examples	Package of examples to demonstrate the usage of controllers
SampleClock	Global options for blocks of Controller library (in particular sample clock)
Sampler	Sample the input signal if discrete block or y=u if continuous block
StateSpace	Continuous or discrete state space system block
TransferFunction	Continuous or discrete, single input single output transfer function
ZerosAndPoles	Continuous or discretized, single input single output block described by a ZerosAndPoles object
Filter	Continuous or discretized analog low or high pass IIR-filter (CriticalDamping/Bessel/Butterworth/Chebyshev)
FilterFIR	Discrete finite impulse response low or high pass filter
Integrator	Output the integral of the input signal (continuous or discrete block)
Derivative	Approximate derivative (continuous or discrete block)
FirstOrder	First order (continuous or discrete) transfer function block (= 1 pole)
SecondOrder	Second order (continuous or discrete) transfer function block (= 2 poles)
PI	Proportional-Integral controller (continuous or discrete block)
PID	PID-controller in additive description form
LimPID	P, PI, PD, and PID controller with limited output, anti-windup compensation and setpoint weighting
UnitDelay	Delay the input by a multiple of the base sample time if discrete block or y=u if continuous block
ADconverter	Analog to digital converter (including sampler)
DAconverter	Digital to analog converter (including zero order hold)
Interpolator	Increasing the sampling frequency with linear interpolation and optional mean value filtering
MatrixGain	Output the product of a gain matrix with the input signal vector. The matrix can be loaded from a file optionally
Noise	Block that generates a uniform distributed noise output signal at sample instants if discrete and y=0 if continuous
Observer	Luenberger observer for state space systems
BaseClasses	Base classes for control plants
Interfaces	Package of interfaces (partial blocks) of controllers
Icons	Package of icons of controllers
Types	Package of type definitions
Internal	Package of internal utilities of controllers (for advanced users only)