This program is for an autonomous robot for the competition at the Hochschule Luzern. We are one of the 32 teams. <a href="http://cruisingcrepe.wordpress.com/">http://cruisingcrepe.wordpress.com/</a> The postition control is based on this Documentation: Control of Wheeled Mobile Robots: An Experimental Overview from Alessandro De Luca, Giuseppe Oriolo, Marilena Vendittelli. For more information see here: <a href="http://www.dis.uniroma1.it/~labrob/pub/papers/Ramsete01.pdf">http://www.dis.uniroma1.it/~labrob/pub/papers/Ramsete01.pdf</a>
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Diff: RobotControl/RobotControl.cpp
- Revision:
- 6:48eeb41188dd
- Parent:
- 5:48a258f6335e
- Child:
- 8:696c2f9dfc62
diff -r 48a258f6335e -r 48eeb41188dd RobotControl/RobotControl.cpp --- a/RobotControl/RobotControl.cpp Thu Mar 21 08:56:53 2013 +0000 +++ b/RobotControl/RobotControl.cpp Sat Mar 23 13:52:48 2013 +0000 @@ -2,7 +2,10 @@ using namespace std; -RobotControl::RobotControl(MaxonESCON* motorControllerLeft, MaxonESCON* motorControllerRight, /*HMC6352* compass,*/ float period) : Task(period) +RobotControl::RobotControl(MaxonESCON* motorControllerLeft, + MaxonESCON* motorControllerRight, + /*HMC6352* compass,*/ + float period) : Task(period) { /* get peripherals */ this->motorControllerLeft = motorControllerLeft; @@ -91,7 +94,9 @@ return Desired.theta; } -void RobotControl::setDesiredPositionAndAngle(float xposition, float yposition, float theta) +void RobotControl::setDesiredPositionAndAngle(float xposition, + float yposition, + float theta) { setDesiredxPosition(xposition); setDesiredyPosition(yposition); @@ -161,35 +166,16 @@ float RobotControl::getThetaErrorToGoal() { return PiRange(atan2(getyPositionError(),getxPositionError()) - getActualTheta()); - /*float temp; - temp = atan2(getyPositionError(),getxPositionError()) - getActualTheta(); - - if(temp <= -PI) { - temp += 2* PI; - } else if (temp > PI) { - temp -= 2* PI; - } else { - //nothing - } - return temp;*/ } float RobotControl::getThetaGoal() { return PiRange(atan2(getyPositionError(),getxPositionError()) - getTheta()); - - /* - if(temp <= -PI) { - temp += 2* PI; - } else if (temp > PI) { - temp -= 2* PI; - } else { - //nothing - } - return temp;*/ } -void RobotControl::setAllToZero(float xZeroPos, float yZeroPos, float theta) +void RobotControl::setAllToZero(float xZeroPos, + float yZeroPos, + float theta) { Actual.setState(xZeroPos, yZeroPos, theta, 0.0f, 0.0f); Desired.setState(0.0f, 0.0f, 0.0f, 0.0f, 0.0f); @@ -219,8 +205,10 @@ /* position calculation */ /* Set the state of speed from Left und Right Wheel*/ - stateLeft.speed = motorControllerLeft->getActualSpeed() * 2.0f * WHEEL_RADIUS * PI * GEAR; - stateRight.speed = - motorControllerRight->getActualSpeed() * 2.0f * WHEEL_RADIUS * PI * GEAR; + stateLeft.speed = motorControllerLeft->getActualSpeed() * + 2.0f * WHEEL_RADIUS_LEFT * PI * GEAR; + stateRight.speed = - motorControllerRight->getActualSpeed() * + 2.0f * WHEEL_RADIUS_RIGHT * PI * GEAR; /* translational speed of the Robot (average) */ Actual.speed = ( stateRight.speed + stateLeft.speed ) / 2.0f; @@ -231,15 +219,7 @@ /* rotational theta of the Robot integrate the omega with the time*/ Actual.theta += Actual.omega * period; Actual.theta = PiRange(Actual.theta); - /* - if(Actual.theta <= -PI) { - Actual.theta += 2* PI; - } else if (Actual.theta > PI) { - Actual.theta -= 2* PI; - } else { - //nothing - } - */ + /* translational X and Y Position. integrate the speed with the time */ Actual.xposition += (Actual.speed * period * cos(Actual.theta)); Actual.yposition += (Actual.speed * period * sin(Actual.theta)); @@ -256,10 +236,13 @@ speed = K1 * getDistanceError() * cos( getThetaErrorToGoal() ); omega = K2 * getThetaErrorToGoal() + - K1 * ( ( sin(getThetaErrorToGoal()) * cos(getThetaErrorToGoal()) ) / (getThetaErrorToGoal()) ) * ( getThetaErrorToGoal() + K3 * getThetaGoal() ); + K1 * ( ( sin(getThetaErrorToGoal()) * cos(getThetaErrorToGoal()) ) / + (getThetaErrorToGoal()) ) * ( getThetaErrorToGoal() + K3 * getThetaGoal() ); - motorControllerLeft->setVelocity( ( ( (2 * speed) - (WHEEL_DISTANCE * omega) ) / 2 ) / (2 * WHEEL_RADIUS * PI * GEAR) ); - motorControllerRight->setVelocity(-( ( (2 * speed) + (WHEEL_DISTANCE * omega) ) / 2) / (2 * WHEEL_RADIUS * PI * GEAR) ); + motorControllerLeft->setVelocity( ( ( (2 * speed) - (WHEEL_DISTANCE * omega) ) / 2 ) / + (2 * WHEEL_RADIUS_LEFT * PI * GEAR) ); + motorControllerRight->setVelocity(-( ( (2 * speed) + (WHEEL_DISTANCE * omega) ) / 2) / + (2 * WHEEL_RADIUS_RIGHT * PI * GEAR) ); } else { @@ -279,4 +262,3 @@ return theta; } } -