Commit Graph

10 Commits

Author SHA1 Message Date
Nicholas Armstrong
f42bc45ee8 [wpilib] FlywheelSim cleanup (#6629)
This is a cleanup of the FlywheelSim class with a few added features.

- One FlywheelSim constructor that takes a plant, DCMotor, and a optional number of measurementStdDevs. The documentation now states how to construct the plant either through LinearSystemId.createFlywheelSystem or identifyVelocitySystem.

- The gearbox, gearing and moment of Inertia (J) are now private final fields. The gearing is determined from the plant in the constructor as well as the moment of inertia. There are getter methods that allow the flywheelSim to return the gearbox, gearing, and moment of inertia.

- The getCurrentDrawAmps function now uses m_x instead of getAngularVelocityRadPerSec in accordance with more accuracy and matches the patter in other sims.

- Added getter methods for the InputVoltage, angularAcceleration and torque

- (Java only) A third getter method for returning the AngularVelocity of the flywheel using a MutableMeasure as a backing field that is set when getAngularVelocity is called. This summarily returns the angularVelocity as just a Measure object. This allows the user of this class to handle unit conversions with less numerical manipulation. Alterations in C++ for this feature were not needed.
2024-05-24 16:05:14 -07:00
Nicholas Armstrong
ab315e24c8 [wpimath] LinearSystemSim Constructor and method cleanup (#6502)
Modified Java constructors to take a variable number of measurement std devs argument with checks in place to make sure the right amount (or none) are passed into the constructor. All changes passed down to classes utilizing LinearSystemSim.

Removed excess constructors

Removed Java and C++ CurrentDrawAmps method as it doesn't belong in a generic (non electrical) linear system. Kept a non override version in all derived electrical classes.

Also LinearSystemSim has now been made agnostic to electrical systems. Inputs don't have to be voltage. BatteryVoltage clamp function has been pushed down to electrical subclasses.

Co-authored-by: Tyler Veness <calcmogul@gmail.com>
2024-05-15 11:40:30 -06:00
Nicholas Armstrong
7fc17811fa [wpimath] Add full state support to LinearSystemId functions (#6554)
Co-authored-by: Tyler Veness <calcmogul@gmail.com>
2024-05-15 07:23:22 -06:00
Ryan Blue
a4b7fde767 [wpilib] Add mechanism specific SetState overloads to physics sims (#5534) 2023-08-12 15:21:07 -07:00
Peter Johnson
e767605e94 [wpimath] Add typedefs for common types
This makes complex code significantly easier to read.

frc::Vectord<Size> = Eigen::Vector<double, Size>
frc::Matrixd<Rows, Cols> = Eigen::Matrix<double, Rows, Cols>
2022-04-30 20:38:55 -07:00
Tyler Veness
181723e573 Replace .to<double>() and .template to<double>() with .value() (#3667)
It's a less verbose way to do the same thing.
2021-10-25 08:58:12 -07:00
Tyler Veness
9359431bad [wpimath] Clean up Eigen usage
* Replace Matrix<> with Vector<> where vectors are explicitly intended.
  I found these via `rg "Eigen::Matrix<double, \w+, 1>"`.
* Pass all Eigen matrices by const reference. I found these via `rg
  "\(Eigen"` on main (the initializer list constructors make more false
  positives).
* Replace MakeMatrix() and operator<< usage with initializer list
  constructors. I found these via `rg MakeMatrix` and `rg "<<"`
  respectively.
* Deprecate MakeMatrix()
2021-09-17 12:12:19 -07:00
Peter Johnson
8f1f64ffb6 Remove year from file copyright message (NFC) (#2972)
Also update copyright to include "and other WPILib contributors" and clarify
license referral language to not be restricted to FIRST teams.
2020-12-26 14:12:05 -08:00
Prateek Machiraju
061432147d [wpilib] Clean up physics simulation class APIs (#2763) 2020-10-15 21:00:45 -07:00
Matt
b61f08d3fa [wpilib] Add physics simulation support with state-space (#2615)
This includes physics simulation support for arms/elevator models, as well as differential drivetrains.

Swerve might be added at a later date.

Co-authored-by: Claudius Tewari <cttewari@gmail.com>
Co-authored-by: Prateek Machiraju <prateek.machiraju@gmail.com>
Co-authored-by: Tyler Veness <calcmogul@gmail.com>
2020-09-20 09:39:52 -07:00