control_law.hpp

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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
 *
 */


#ifndef ACADO_TOOLKIT_CONTROL_LAW_HPP
#define ACADO_TOOLKIT_CONTROL_LAW_HPP


#include <acado/utils/acado_utils.hpp>
#include <acado/simulation_environment/simulation_block.hpp>


BEGIN_NAMESPACE_ACADO


class ControlLaw : public SimulationBlock
{
        //
        // PUBLIC MEMBER FUNCTIONS:
        //
        public:

                ControlLaw( );

                ControlLaw(     double _samplingTime
                                        );

                ControlLaw(     const ControlLaw& rhs
                                        );

                virtual ~ControlLaw( );

                ControlLaw& operator=(  const ControlLaw& rhs
                                                                );

                virtual ControlLaw* clone( ) const = 0;


                virtual returnValue initializeAlgebraicStates(  const VariablesGrid& _xa_init
                                                                                                                );

                virtual returnValue initializeAlgebraicStates(  const char* fileName
                                                                                                                );


                virtual returnValue initializeControls( const VariablesGrid& _u_init
                                                                                                );

                virtual returnValue initializeControls( const char* fileName
                                                                                                );


                virtual returnValue init(       double startTime = 0.0,
                                                                        const DVector& _x = emptyConstVector,
                                                                        const DVector& _p = emptyConstVector,
                                                                        const VariablesGrid& _yRef = emptyConstVariablesGrid
                                                                        ) = 0;


                virtual returnValue step(       double currentTime,
                                                                        const DVector& _x,
                                                                        const DVector& _p = emptyConstVector,
                                                                        const VariablesGrid& _yRef = emptyConstVariablesGrid
                                                                        ) = 0;
                                                                        
                virtual returnValue step(       const DVector& _x,
                                                                        const DVector& _p = emptyConstVector,
                                                                        const VariablesGrid& _yRef = emptyConstVariablesGrid
                                                                        );

                virtual returnValue feedbackStep(       double currentTime,
                                                                                        const DVector& _x,
                                                                                        const DVector& _p = emptyConstVector,
                                                                                        const VariablesGrid& _yRef = emptyConstVariablesGrid
                                                                                        );

                virtual returnValue preparationStep(    double nextTime = 0.0,
                                                                                                const VariablesGrid& _yRef = emptyConstVariablesGrid
                                                                                                );


                virtual returnValue shift(      double timeShift = -1.0
                                                                        );

                                                                        
                inline returnValue getU(        DVector& _u
                                                                        ) const;

                inline returnValue getP(        DVector& _p
                                                                        ) const;


                virtual uint getNX( ) const;

                virtual uint getNXA( ) const;

                virtual uint getNU( ) const;

                virtual uint getNP( ) const;

                virtual uint getNW( ) const;

                virtual uint getNY( ) const;


                virtual double getLengthPredictionHorizon( ) const;

                virtual double getLengthControlHorizon( ) const;


                virtual BooleanType isDynamic( ) const = 0;

                virtual BooleanType isStatic( ) const = 0;

                virtual BooleanType isInRealTimeMode( ) const;


        //
        // PROTECTED MEMBER FUNCTIONS:
        //
        protected:



        //
        // DATA MEMBERS:
        //
        protected:

                DVector u;                                                      
                DVector p;                                                      
};


CLOSE_NAMESPACE_ACADO


#include <acado/control_law/control_law.ipp>


#endif  // ACADO_TOOLKIT_CONTROL_LAW_HPP

/*
 *      end of file
 */