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9730032866ea8d00db8da4eff898de5d698cf059
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31 Commits

Author SHA1 Message Date
Tyler Veness
9730032866 [wpimath] Document LQR and KalmanFilter exceptions (#4418) 2022-09-17 00:16:40 -07:00
Tyler Veness
fe4d12ce22 [wpimath] Add LTV controller derivations and make enums private (#4380) 
The LTV differential drive controller derivation wasn't included inline
because it's too long.
 2022-08-28 23:04:52 -07:00
Tyler Veness
3fdb2f767d [wpimath] Add comments with Ramsete equations (#4348) 2022-08-11 07:09:16 -07:00
Tyler Veness
add00a96ed [wpimath] Improve DifferentialDriveAccelerationLimiter docs (NFC) (#4323) 
Defined trackwidth, added skipped steps to the algorithm's internal
proof, and grouped the algorithm steps more logically with blank lines.
 2022-07-01 06:43:57 -07:00
Tyler Veness
82fac41244 [wpimath] Better document trackwidth parameters (NFC) (#4324) 2022-07-01 06:42:49 -07:00
Prateek Machiraju
fc37265da5 [wpimath] Add angle measurement convention to ArmFeedforward docs (NFC) (#4285) 2022-06-02 21:22:47 -07:00
Tommy Beadle
dc6f641fd2 [wpimath] PIDController: Reset position and velocity error when reset() is called. (#4064) 
In addition to m_prevError and m_totalError, m_positionError and
m_velocityError need to be reset to 0 when reset() is called.
Otherwise, the next time calculate() is called, the old values will be
used as the previous error, but this is inaccurate since the caller
wanted to reset the state of the PID controller.
 2022-05-06 08:44:08 -07:00
Tyler Veness
b1abf455c1 [wpimath] LTVUnicycleController: Use LUT, provide default hyperparameters (#4213) 2022-05-04 22:04:08 -07:00
Tyler Veness
d5456cf278 [wpimath] LTVDifferentialDriveController: Remove unused variable (#4212) 2022-05-04 22:03:15 -07:00
Tyler Veness
ce1a7d698a [wpimath] Refactor WheelVoltages inner class to a separate file (#4203) 2022-05-01 11:01:20 -07:00
Tyler Veness
87bf70fa8e [wpimath] Add LTV controllers (#4094) 
This adds a unicycle controller that's a drop-in replacement for Ramsete
and a differential drive controller that controls the full pose and
outputs voltages. The main benefit is LQR-like tuning knobs using a
system model.
 2022-04-30 22:54:22 -07:00
Tyler Veness
5ebe911933 [wpimath] Add DifferentialDriveAccelerationLimiter (#4091) 2022-04-24 07:21:40 -07:00
Tyler Veness
c8905ec29a [wpimath] Remove ImplicitModelFollower dt argument (#4119) 
The math works just fine without model discretization.
 2022-03-29 11:29:06 -07:00
Tyler Veness
8d79dc8738 [wpimath] Add ImplicitModelFollower (#4056) 2022-03-20 00:36:12 -07:00
Tyler Veness
78108c2aba [wpimath] Fix PIDController having incorrect error after calling SetSetpoint() (#4070) 2022-03-19 23:59:00 -07:00
Chirag Kaushik
f3a0b5c7d7 [wpimath] Fix Java SimpleMotorFeedforward Docs (NFC) (#3926) 2022-01-17 09:59:04 -08:00
Tyler Veness
db0fbb6448 [wpimath] Fix LQR matrix constructor overload for Q, R, and N (#3884) 
It was using the continuous B matrix to compute the feedback gain
instead of the discrete B matrix.

Tests were added for the matrix constructor overloads.
 2022-01-08 23:23:53 -08:00
Tyler Veness
7269a170fb Upgrade maven deps to latest versions and fix new linter errors (#3772) 
This also makes the Gradle build work with JDK 17.

The extra JVM args in gradle.properties works around a bug with spotless
and JDK 17: https://github.com/diffplug/spotless/issues/834

PMD.CloseResource was ignored because it's almost always a false
positive, and there are many of them.
 2021-12-09 12:20:08 -08:00
Tyler Veness
04957a6d30 [wpimath] Fix units of RamseteController's b and zeta (#3757) 
Fixes #3755.
 2021-12-03 18:21:30 -08:00
Oblarg
da90c1cd2c [wpilib] Add bang-bang controller (#3676) 
Co-authored-by: Tyler Veness <calcmogul@gmail.com>
 2021-11-23 20:34:46 -08:00
Tyler Veness
a939cd9c89 [wpimath] Print uncontrollable/unobservable models in LQR and KF (#3694) 
IsDetectable() was added to make the code easier to read.
 2021-10-29 00:03:02 -07:00
Tyler Veness
f9e976467f [examples] Rename DriveTrain classes to Drivetrain (#3594) 
Drivetrain is one word, not two.
 2021-09-22 13:27:26 -07:00
Tyler Veness
3838cc4ec4 Use unicode characters in docs equations (#3487) 
javac and javadoc needed the encoding set to UTF-8.
 2021-07-29 22:42:43 -07:00
Tyler Veness
50af74c38f [wpimath] Clean up NumericalIntegration and add Discretization tests (#3489) 
* Rename Butcher tableau sections in NumericalIntegration such that
  top-left is c, top-right is A, and bottom-right is b
* Move edu.wpi.first.math.Discretization to
  edu.wpi.first.math.system.Discretization
* Sort Java Discretization to match C++ function order
* Add tests for Java Discretization
  * Required adding Runge-Kutta time-varying impl to tests
* Move C++ Runge-Kutta time-varying impl to tests only
  * Users don't need it
 2021-07-25 07:42:59 -07:00
Noam Zaks
791770cf6e [wpimath] Move controller from wpilibj to wpimath (#3439) 2021-06-16 07:45:51 -07:00
Tyler Veness
4d9ff76433 Fix documentation warnings generated by JavaDoc (NFC) (#3428) 
Some C++ Doxygen comments were updated to reflect any wording changes.

See `rg "(@return|@param \w+) TODO" | less` for list of incomplete docs.
 2021-06-10 20:46:47 -07:00
Tyler Veness
e246b78846 [wpimath] Clean up member initialization in feedforward classes (#3425) 2021-06-09 23:59:31 -07:00
Tyler Veness
edd2f0232c [wpimath] Add DARE solver for Q, R, and N with LQR ctor overloads 
This is useful for implementing implicit model following.
 2021-06-06 16:45:12 -07:00
Tyler Veness
04dae799a2 [wpimath] Add SimpleMotorFeedforward::Calculate(velocity, nextVelocity) overload (#3183) 
This is often more convenient than using the overload with velocity and
acceleration.

Fixes #3160.
 2021-05-21 23:44:10 -07:00
Tyler Veness
8dd8d4d2d4 [wpimath] Fix redundant nested math package introduced by #3316 (#3368) 2021-05-21 22:29:52 -07:00
Noam Zaks
c8ff626fe2 [wpimath] Move Java classes to edu.wpi.first.math (#3316) 2021-05-01 08:53:30 -07:00