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speedlimiter.h

00001 /*
00002  * Orca-Robotics Project: Components for robotics 
00003  *               http://orca-robotics.sf.net/
00004  * Copyright (c) 2004-2006 Alex Brooks, Alexei Makarenko, Tobias Kaupp, Ben Upcroft
00005  *
00006  * This copy of Orca is licensed to you under the terms described in
00007  * the LICENSE file included in this distribution.
00008  *
00009  */
00010 #ifndef ORCALOCALNAV_SPEEDLIMITER_H
00011 #define ORCALOCALNAV_SPEEDLIMITER_H
00012 
00013 #include <orcaice/context.h>
00014 #include <orcaice/heartbeater.h>
00015 #include <orcalocalnav/goal.h>
00016 #include <hydronavutil/hydronavutil.h>
00017 
00018 namespace orcalocalnav {
00019 
00020 //
00021 // Constrains the speed according to the next goal taking into account the time
00022 // remaining to reach that goal.
00023 // The goal is in the robot's local frame of reference.
00024 //
00025 // @author Alex Brooks
00026 //
00027 class SpeedLimiter
00028 {
00029 
00030 public: 
00031 
00032     SpeedLimiter( const orcaice::Context &context );
00033 
00034     void setIntendedSpeedThisLeg( const orcalocalnav::Goal &goal );
00035 
00036     // constrain the max speeds for a particular goal
00037     void constrainMaxSpeeds( orcalocalnav::Goal &goal,
00038                              double              currentSpeed );
00039 
00040 private: 
00041 
00042     double intendedSpeedThisLeg_;
00043 
00044     orcaice::Context  context_;
00045 };
00046 
00047 }
00048 
00049 #endif
 

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