diff options
author | Luke Shumaker <lukeshu@sbcglobal.net> | 2015-02-16 17:40:02 -0500 |
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committer | Luke Shumaker <lukeshu@sbcglobal.net> | 2015-02-16 17:40:02 -0500 |
commit | 74b7077270fdd9d4d7a6eca0bb7011283ae999a8 (patch) | |
tree | 1776cc38d7e64bb980df5436655aeaa37dd27b30 /src/org/mckenzierobotics/lib/robot/FeedForward.java |
initial commit
Diffstat (limited to 'src/org/mckenzierobotics/lib/robot/FeedForward.java')
-rw-r--r-- | src/org/mckenzierobotics/lib/robot/FeedForward.java | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/src/org/mckenzierobotics/lib/robot/FeedForward.java b/src/org/mckenzierobotics/lib/robot/FeedForward.java new file mode 100644 index 0000000..a275366 --- /dev/null +++ b/src/org/mckenzierobotics/lib/robot/FeedForward.java @@ -0,0 +1,76 @@ +/** + * Copyright (c) 2012 Precise Path Robotics, Inc + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + * + * @author Luke Shumaker <lukeshu@sbcglobal.net> + */ +package org.mckenzierobotics.lib.robot; + +import edu.wpi.first.wpilibj.PIDOutput; +import edu.wpi.first.wpilibj.PIDSource; + +/** + * + * @author Luke Shumaker <lukeshu@sbcglobal.net> + */ +public abstract class FeedForward implements PIDOutput { + private class PIDTrigger implements PIDOutput { + private FeedForward ff; + public PIDTrigger(FeedForward ff) { + this.ff = ff; + } + public void pidWrite(double output) { + ff.update(output); + } + } + private PIDController pid; + private PIDOutput pidOutput; + public FeedForward(double Kp, double Ki, double Kd, PIDSource source, PIDOutput output) { + pidOutput = output; + pid = new PIDController(Kp, Ki, Kd, source, new PIDTrigger(this)); + } + public FeedForward(double Kp, double Ki, double Kd, PIDSource source, PIDOutput output, double period) { + pidOutput = output; + pid = new PIDController(Kp, Ki, Kd, source, new PIDTrigger(this), period); + } + + public FeedForward(double Kp, double Ki, double Kd, PIDSource source, PIDOutput output, boolean autodisable) { + pidOutput = output; + pid = new PIDController(Kp, Ki, Kd, source, new PIDTrigger(this), autodisable); + } + public FeedForward(double Kp, double Ki, double Kd, PIDSource source, PIDOutput output, double period, boolean autodisable) { + pidOutput = output; + pid = new PIDController(Kp, Ki, Kd, source, new PIDTrigger(this), period, autodisable); + } + + public PIDController getPID() { + return pid; + } + + public void pidWrite(double output) { + pid.setSetpoint(output); + } + + public void update(double pidResult) { + if (pid.isEnable()) { + double ffResult = calculate(pid.getSetpoint()); + pidOutput.pidWrite(ffResult+pidResult); + } else { + pidOutput.pidWrite(0); + } + } + + public abstract double calculate(double setpoint); +} |