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/*
* This file is part of ACADO Toolkit.
*
* ACADO Toolkit -- A Toolkit for Automatic Control and Dynamic Optimization.
* Copyright (C) 2008-2014 by Boris Houska, Hans Joachim Ferreau,
* Milan Vukov, Rien Quirynen, KU Leuven.
* Developed within the Optimization in Engineering Center (OPTEC)
* under supervision of Moritz Diehl. All rights reserved.
*
* ACADO Toolkit is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 3 of the License, or (at your option) any later version.
*
* ACADO Toolkit is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with ACADO Toolkit; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
/**
* \file include/acado/noise/uniform_noise.hpp
* \author Boris Houska, Hans Joachim Ferreau
*/
#ifndef ACADO_TOOLKIT_UNIFORM_NOISE_HPP
#define ACADO_TOOLKIT_UNIFORM_NOISE_HPP
#include <acado/noise/noise.hpp>
BEGIN_NAMESPACE_ACADO
/**
* \brief Generates pseudo-random uniformly distributed noise for simulating the Process.
*
* \ingroup BasicDataStructures
*
* The class UniformNoise generates pseudo-random uniformly distributed noise
* for simulating the Process within the SimulationEnvironment.
*
* \author Hans Joachim Ferreau, Boris Houska
*/
class UniformNoise : public Noise
{
//
// PUBLIC MEMBER FUNCTIONS:
//
public:
/** Default constructor.
*/
UniformNoise( );
/** Constructor which takes lower and upper limits of the random variable.
* The dimension of these limit vector determine the dimension of the
* random variable.
*
* @param[in] _lowerLimit Lower limit for each component.
* @param[in] _upperLimit Upper limit for each component.
*/
UniformNoise( const DVector& _lowerLimit,
const DVector& _upperLimit
);
/** Constructor which takes the dimension of the random variable as well as
* as common values for the lower and upper limits of all components.
*
* @param[in] _dim Dimension of random variable.
* @param[in] _lowerLimit Common lower limit for all components.
* @param[in] _upperLimit Common upper limit for all components.
*/
UniformNoise( uint _dim,
double _lowerLimit,
double _upperLimit
);
/** Copy constructor (deep copy).
*
* @param[in] rhs Right-hand side object.
*/
UniformNoise( const UniformNoise& rhs
);
/** Destructor.
*/
virtual ~UniformNoise( );
/** Assignment Operator (deep copy)
*
* @param[in] rhs Right-hand side object.
*/
UniformNoise& operator=( const UniformNoise& rhs
);
/** Clone constructor (deep copy).
*
* \return Pointer to deep copy of base class type
*/
virtual UniformNoise* clone( ) const;
/** Clone constructor for a given noise component (deep copy).
*
* @param[in] idx Right-hand side object.
*
* \return Pointer to deep copy of base class type
*/
virtual UniformNoise* clone( uint idx
) const;
/** Assigns new lower and upper limits on the random variable.
*
* @param[in] _lowerLimit New lower limits for each component.
* @param[in] _upperLimit New upper limits for each component.
*
* \return SUCCESSFUL_RETURN, \n
* RET_VECTOR_DIMENSION_MISMATCH, \n
* RET_INVALID_ARGUMENTS
*/
returnValue setLimits( const DVector& _lowerLimit,
const DVector& _upperLimit
);
/** Assigns new lower and upper limits on the random variable.
*
* @param[in] _lowerLimit New common lower limit for all components.
* @param[in] _upperLimit New common upper limit for all components.
*
* \return SUCCESSFUL_RETURN, \n
* RET_INVALID_ARGUMENTS
*/
returnValue setLimits( double _lowerLimit,
double _upperLimit
);
/** Assigns new lower and upper limit on the component of the random variable
* with given index.
*
* @param[in] idx Index of component.
* @param[in] _lowerLimit New lower limit.
* @param[in] _upperLimit New upper limit.
*
* \return SUCCESSFUL_RETURN, \n
* RET_INDEX_OUT_OF_BOUNDS, \n
* RET_INVALID_ARGUMENTS
*/
returnValue setLimit( uint idx,
double _lowerLimit,
double _upperLimit
);
/** Initializes noise generation and performs a couple of consistency checks.
* Initialization of the pseudo-random number generator can be based on
* a seed in order to allow exact reproduction of generated noise. If seed
* is not specified (i.e. 0), a seed is obtain from the system clock.
*
* @param[in] seed Seed for pseudo-random number generator.
*
* \return SUCCESSFUL_RETURN, \n
* RET_INVALID_NOISE_SETTINGS, \n
* RET_NO_NOISE_SETTINGS
*/
virtual returnValue init( uint seed = 0
);
/** Generates a single noise vector based on current internal settings.
*
* @param[out] _w Generated noise vector.
*
* \return SUCCESSFUL_RETURN, \n
* RET_BLOCK_NOT_READY, \n
* RET_VECTOR_DIMENSION_MISMATCH
*/
virtual returnValue step( DVector& _w
);
/** Generates a noise vector sequence based on current internal settings.
* Noise is generated for each grid point of the VariablesGrid passed.
*
* @param[in,out] _w Generated noise vector sequence.
*
* \return SUCCESSFUL_RETURN, \n
* RET_BLOCK_NOT_READY, \n
* RET_VECTOR_DIMENSION_MISMATCH
*/
virtual returnValue step( VariablesGrid& _w
);
/** Returns lower limits of the random variable.
*
* \return Lower limits of the random variable
*/
inline const DVector& getLowerLimit( ) const;
/** Returns upper limits of the random variable.
*
* \return Upper limits of the random variable
*/
inline const DVector& getUpperLimit( ) const;
//
// PROTECTED MEMBER FUNCTIONS:
//
protected:
//
// PROTECTED MEMBERS:
//
protected:
DVector lowerLimit; /**< Lower limit for each component. */
DVector upperLimit; /**< Upper limit for each component. */
};
CLOSE_NAMESPACE_ACADO
#include <acado/noise/uniform_noise.ipp>
#endif // ACADO_TOOLKIT_UNIFORM_NOISE_HPP
/*
* end of file
*/