Class CentripetalAccelerationConstraint
java.lang.Object
edu.wpi.first.math.trajectory.constraint.CentripetalAccelerationConstraint
- All Implemented Interfaces:
TrajectoryConstraint
A constraint on the maximum absolute centripetal acceleration allowed when traversing a
trajectory. The centripetal acceleration of a robot is defined as the velocity squared divided by
the radius of curvature.
Effectively, limiting the maximum centripetal acceleration will cause the robot to slow down around tight turns, making it easier to track trajectories with sharp turns.
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Nested Class Summary
Nested classes/interfaces inherited from interface edu.wpi.first.math.trajectory.constraint.TrajectoryConstraint
TrajectoryConstraint.MinMax
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Constructor Summary
ConstructorsConstructorDescriptionCentripetalAccelerationConstraint
(double maxCentripetalAcceleration) Constructs a centripetal acceleration constraint. -
Method Summary
Modifier and TypeMethodDescriptiondouble
getMaxVelocity
(Pose2d pose, double curvature, double velocity) Returns the max velocity given the current pose and curvature.getMinMaxAcceleration
(Pose2d pose, double curvature, double velocity) Returns the minimum and maximum allowable acceleration for the trajectory given pose, curvature, and speed.
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Constructor Details
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CentripetalAccelerationConstraint
Constructs a centripetal acceleration constraint.- Parameters:
maxCentripetalAcceleration
- The max centripetal acceleration in m/s².
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Method Details
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getMaxVelocity
Returns the max velocity given the current pose and curvature.- Specified by:
getMaxVelocity
in interfaceTrajectoryConstraint
- Parameters:
pose
- The pose at the current point in the trajectory.curvature
- The curvature at the current point in the trajectory in rad/m.velocity
- The velocity at the current point in the trajectory before constraints are applied in m/s.- Returns:
- The absolute maximum velocity.
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getMinMaxAcceleration
public TrajectoryConstraint.MinMax getMinMaxAcceleration(Pose2d pose, double curvature, double velocity) Returns the minimum and maximum allowable acceleration for the trajectory given pose, curvature, and speed.- Specified by:
getMinMaxAcceleration
in interfaceTrajectoryConstraint
- Parameters:
pose
- The pose at the current point in the trajectory.curvature
- The curvature at the current point in the trajectory in rad/m.velocity
- The speed at the current point in the trajectory in m/s.- Returns:
- The min and max acceleration bounds.
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