WPILibC++
2019.1.1-beta-1-37-g43d188a
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A class for driving Killough drive platforms. More...
#include <KilloughDrive.h>
Public Member Functions | |
KilloughDrive (SpeedController &leftMotor, SpeedController &rightMotor, SpeedController &backMotor) | |
Construct a Killough drive with the given motors and default motor angles. More... | |
KilloughDrive (SpeedController &leftMotor, SpeedController &rightMotor, SpeedController &backMotor, double leftMotorAngle, double rightMotorAngle, double backMotorAngle) | |
Construct a Killough drive with the given motors. More... | |
KilloughDrive (KilloughDrive &&)=default | |
KilloughDrive & | operator= (KilloughDrive &&)=default |
void | DriveCartesian (double ySpeed, double xSpeed, double zRotation, double gyroAngle=0.0) |
Drive method for Killough platform. More... | |
void | DrivePolar (double magnitude, double angle, double zRotation) |
Drive method for Killough platform. More... | |
void | StopMotor () override |
void | GetDescription (wpi::raw_ostream &desc) const override |
void | InitSendable (SendableBuilder &builder) override |
Initializes this Sendable object. More... | |
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RobotDriveBase (RobotDriveBase &&)=default | |
RobotDriveBase & | operator= (RobotDriveBase &&)=default |
void | SetDeadband (double deadband) |
Sets the deadband applied to the drive inputs (e.g., joystick values). More... | |
void | SetMaxOutput (double maxOutput) |
Configure the scaling factor for using RobotDrive with motor controllers in a mode other than PercentVbus or to limit the maximum output. More... | |
void | FeedWatchdog () |
Feed the motor safety object. More... | |
void | SetExpiration (double timeout) override |
double | GetExpiration () const override |
bool | IsAlive () const override |
bool | IsSafetyEnabled () const override |
void | SetSafetyEnabled (bool enabled) override |
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MotorSafety (MotorSafety &&)=default | |
MotorSafety & | operator= (MotorSafety &&)=default |
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SendableBase (bool addLiveWindow=true) | |
Creates an instance of the sensor base. More... | |
SendableBase (SendableBase &&rhs) | |
SendableBase & | operator= (SendableBase &&rhs) |
std::string | GetName () const final |
Gets the name of this Sendable object. More... | |
void | SetName (const wpi::Twine &name) final |
Sets the name of this Sendable object. More... | |
std::string | GetSubsystem () const final |
Gets the subsystem name of this Sendable object. More... | |
void | SetSubsystem (const wpi::Twine &subsystem) final |
Sets the subsystem name of this Sendable object. More... | |
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Sendable (Sendable &&)=default | |
Sendable & | operator= (Sendable &&)=default |
void | SetName (const wpi::Twine &subsystem, const wpi::Twine &name) |
Sets both the subsystem name and device name of this Sendable object. More... | |
Static Public Attributes | |
static constexpr double | kDefaultLeftMotorAngle = 60.0 |
static constexpr double | kDefaultRightMotorAngle = 120.0 |
static constexpr double | kDefaultBackMotorAngle = 270.0 |
Additional Inherited Members | |
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enum | MotorType { kFrontLeft = 0, kFrontRight = 1, kRearLeft = 2, kRearRight = 3, kLeft = 0, kRight = 1, kBack = 2 } |
The location of a motor on the robot for the purpose of driving. | |
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double | Limit (double number) |
Limit motor values to the -1.0 to +1.0 range. | |
double | ApplyDeadband (double number, double deadband) |
Returns 0.0 if the given value is within the specified range around zero. More... | |
void | Normalize (wpi::MutableArrayRef< double > wheelSpeeds) |
Normalize all wheel speeds if the magnitude of any wheel is greater than 1.0. | |
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void | AddChild (std::shared_ptr< Sendable > child) |
Add a child component. More... | |
void | AddChild (void *child) |
Add a child component. More... | |
void | SetName (const wpi::Twine &moduleType, int channel) |
Sets the name of the sensor with a channel number. More... | |
void | SetName (const wpi::Twine &moduleType, int moduleNumber, int channel) |
Sets the name of the sensor with a module and channel number. More... | |
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double | m_deadband = 0.02 |
double | m_maxOutput = 1.0 |
MotorSafetyHelper | m_safetyHelper {this} |
A class for driving Killough drive platforms.
Killough drives are triangular with one omni wheel on each corner.
Drive base diagram:
/_____\ / \ / \ \ / ---
Each Drive() function provides different inverse kinematic relations for a Killough drive. The default wheel vectors are parallel to their respective opposite sides, but can be overridden. See the constructor for more information.
This library uses the NED axes convention (North-East-Down as external reference in the world frame): http://www.nuclearprojects.com/ins/images/axis_big.png.
The positive X axis points ahead, the positive Y axis points right, and the and the positive Z axis points down. Rotations follow the right-hand rule, so clockwise rotation around the Z axis is positive.
frc::KilloughDrive::KilloughDrive | ( | SpeedController & | leftMotor, |
SpeedController & | rightMotor, | ||
SpeedController & | backMotor | ||
) |
Construct a Killough drive with the given motors and default motor angles.
The default motor angles make the wheels on each corner parallel to their respective opposite sides.
If a motor needs to be inverted, do so before passing it in.
leftMotor | The motor on the left corner. |
rightMotor | The motor on the right corner. |
backMotor | The motor on the back corner. |
frc::KilloughDrive::KilloughDrive | ( | SpeedController & | leftMotor, |
SpeedController & | rightMotor, | ||
SpeedController & | backMotor, | ||
double | leftMotorAngle, | ||
double | rightMotorAngle, | ||
double | backMotorAngle | ||
) |
Construct a Killough drive with the given motors.
Angles are measured in degrees clockwise from the positive X axis.
leftMotor | The motor on the left corner. |
rightMotor | The motor on the right corner. |
backMotor | The motor on the back corner. |
leftMotorAngle | The angle of the left wheel's forward direction of travel. |
rightMotorAngle | The angle of the right wheel's forward direction of travel. |
backMotorAngle | The angle of the back wheel's forward direction of travel. |
void frc::KilloughDrive::DriveCartesian | ( | double | ySpeed, |
double | xSpeed, | ||
double | zRotation, | ||
double | gyroAngle = 0.0 |
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) |
Drive method for Killough platform.
Angles are measured clockwise from the positive X axis. The robot's speed is independent from its angle or rotation rate.
ySpeed | The robot's speed along the Y axis [-1.0..1.0]. Right is positive. |
xSpeed | The robot's speed along the X axis [-1.0..1.0]. Forward is positive. |
zRotation | The robot's rotation rate around the Z axis [-1.0..1.0]. Clockwise is positive. |
gyroAngle | The current angle reading from the gyro in degrees around the Z axis. Use this to implement field-oriented controls. |
void frc::KilloughDrive::DrivePolar | ( | double | magnitude, |
double | angle, | ||
double | zRotation | ||
) |
Drive method for Killough platform.
Angles are measured clockwise from the positive X axis. The robot's speed is independent from its angle or rotation rate.
magnitude | The robot's speed at a given angle [-1.0..1.0]. Forward is positive. |
angle | The angle around the Z axis at which the robot drives in degrees [-180..180]. |
zRotation | The robot's rotation rate around the Z axis [-1.0..1.0]. Clockwise is positive. |
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overridevirtual |