PID control library forked from Aaron Berk. Make sure to read articles from www.controlguru.com to properly understand how to instantiate the PID loop.
Fork of PID by
PID.cpp@2:b55a16b5f05c, 2014-05-12 (annotated)
- Committer:
- pHysiX
- Date:
- Mon May 12 13:15:56 2014 +0000
- Revision:
- 2:b55a16b5f05c
- Parent:
- 0:6e12a3e5af19
Added in ability to set Proportional Gain only
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
aberk | 0:6e12a3e5af19 | 1 | /** |
aberk | 0:6e12a3e5af19 | 2 | * @author Aaron Berk |
aberk | 0:6e12a3e5af19 | 3 | * |
aberk | 0:6e12a3e5af19 | 4 | * @section LICENSE |
aberk | 0:6e12a3e5af19 | 5 | * |
aberk | 0:6e12a3e5af19 | 6 | * Copyright (c) 2010 ARM Limited |
aberk | 0:6e12a3e5af19 | 7 | * |
aberk | 0:6e12a3e5af19 | 8 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
aberk | 0:6e12a3e5af19 | 9 | * of this software and associated documentation files (the "Software"), to deal |
aberk | 0:6e12a3e5af19 | 10 | * in the Software without restriction, including without limitation the rights |
aberk | 0:6e12a3e5af19 | 11 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
aberk | 0:6e12a3e5af19 | 12 | * copies of the Software, and to permit persons to whom the Software is |
aberk | 0:6e12a3e5af19 | 13 | * furnished to do so, subject to the following conditions: |
aberk | 0:6e12a3e5af19 | 14 | * |
aberk | 0:6e12a3e5af19 | 15 | * The above copyright notice and this permission notice shall be included in |
aberk | 0:6e12a3e5af19 | 16 | * all copies or substantial portions of the Software. |
aberk | 0:6e12a3e5af19 | 17 | * |
aberk | 0:6e12a3e5af19 | 18 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
aberk | 0:6e12a3e5af19 | 19 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
aberk | 0:6e12a3e5af19 | 20 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
aberk | 0:6e12a3e5af19 | 21 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
aberk | 0:6e12a3e5af19 | 22 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
aberk | 0:6e12a3e5af19 | 23 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
aberk | 0:6e12a3e5af19 | 24 | * THE SOFTWARE. |
aberk | 0:6e12a3e5af19 | 25 | * |
aberk | 0:6e12a3e5af19 | 26 | * @section DESCRIPTION |
pHysiX | 2:b55a16b5f05c | 27 | * |
aberk | 0:6e12a3e5af19 | 28 | * A PID controller is a widely used feedback controller commonly found in |
aberk | 0:6e12a3e5af19 | 29 | * industry. |
aberk | 0:6e12a3e5af19 | 30 | * |
aberk | 0:6e12a3e5af19 | 31 | * This library is a port of Brett Beauregard's Arduino PID library: |
aberk | 0:6e12a3e5af19 | 32 | * |
aberk | 0:6e12a3e5af19 | 33 | * http://www.arduino.cc/playground/Code/PIDLibrary |
aberk | 0:6e12a3e5af19 | 34 | * |
aberk | 0:6e12a3e5af19 | 35 | * The wikipedia article on PID controllers is a good place to start on |
aberk | 0:6e12a3e5af19 | 36 | * understanding how they work: |
aberk | 0:6e12a3e5af19 | 37 | * |
aberk | 0:6e12a3e5af19 | 38 | * http://en.wikipedia.org/wiki/PID_controller |
aberk | 0:6e12a3e5af19 | 39 | * |
aberk | 0:6e12a3e5af19 | 40 | * For a clear and elegant explanation of how to implement and tune a |
aberk | 0:6e12a3e5af19 | 41 | * controller, the controlguru website by Douglas J. Cooper (who also happened |
aberk | 0:6e12a3e5af19 | 42 | * to be Brett's controls professor) is an excellent reference: |
aberk | 0:6e12a3e5af19 | 43 | * |
aberk | 0:6e12a3e5af19 | 44 | * http://www.controlguru.com/ |
aberk | 0:6e12a3e5af19 | 45 | */ |
aberk | 0:6e12a3e5af19 | 46 | |
aberk | 0:6e12a3e5af19 | 47 | /** |
aberk | 0:6e12a3e5af19 | 48 | * Includes |
aberk | 0:6e12a3e5af19 | 49 | */ |
aberk | 0:6e12a3e5af19 | 50 | #include "PID.h" |
aberk | 0:6e12a3e5af19 | 51 | |
pHysiX | 2:b55a16b5f05c | 52 | PID::PID(float Kc, float tauI, float tauD, float interval) |
pHysiX | 2:b55a16b5f05c | 53 | { |
aberk | 0:6e12a3e5af19 | 54 | |
aberk | 0:6e12a3e5af19 | 55 | usingFeedForward = false; |
aberk | 0:6e12a3e5af19 | 56 | inAuto = false; |
aberk | 0:6e12a3e5af19 | 57 | |
aberk | 0:6e12a3e5af19 | 58 | //Default the limits to the full range of I/O: 3.3V |
aberk | 0:6e12a3e5af19 | 59 | //Make sure to set these to more appropriate limits for |
aberk | 0:6e12a3e5af19 | 60 | //your application. |
aberk | 0:6e12a3e5af19 | 61 | setInputLimits(0.0, 3.3); |
aberk | 0:6e12a3e5af19 | 62 | setOutputLimits(0.0, 3.3); |
aberk | 0:6e12a3e5af19 | 63 | |
aberk | 0:6e12a3e5af19 | 64 | tSample_ = interval; |
aberk | 0:6e12a3e5af19 | 65 | |
aberk | 0:6e12a3e5af19 | 66 | setTunings(Kc, tauI, tauD); |
aberk | 0:6e12a3e5af19 | 67 | |
aberk | 0:6e12a3e5af19 | 68 | setPoint_ = 0.0; |
aberk | 0:6e12a3e5af19 | 69 | processVariable_ = 0.0; |
aberk | 0:6e12a3e5af19 | 70 | prevProcessVariable_ = 0.0; |
aberk | 0:6e12a3e5af19 | 71 | controllerOutput_ = 0.0; |
aberk | 0:6e12a3e5af19 | 72 | prevControllerOutput_ = 0.0; |
aberk | 0:6e12a3e5af19 | 73 | |
aberk | 0:6e12a3e5af19 | 74 | accError_ = 0.0; |
aberk | 0:6e12a3e5af19 | 75 | bias_ = 0.0; |
pHysiX | 2:b55a16b5f05c | 76 | |
aberk | 0:6e12a3e5af19 | 77 | realOutput_ = 0.0; |
aberk | 0:6e12a3e5af19 | 78 | |
aberk | 0:6e12a3e5af19 | 79 | } |
aberk | 0:6e12a3e5af19 | 80 | |
pHysiX | 2:b55a16b5f05c | 81 | void PID::setInputLimits(float inMin, float inMax) |
pHysiX | 2:b55a16b5f05c | 82 | { |
aberk | 0:6e12a3e5af19 | 83 | |
aberk | 0:6e12a3e5af19 | 84 | //Make sure we haven't been given impossible values. |
aberk | 0:6e12a3e5af19 | 85 | if (inMin >= inMax) { |
aberk | 0:6e12a3e5af19 | 86 | return; |
aberk | 0:6e12a3e5af19 | 87 | } |
aberk | 0:6e12a3e5af19 | 88 | |
aberk | 0:6e12a3e5af19 | 89 | //Rescale the working variables to reflect the changes. |
aberk | 0:6e12a3e5af19 | 90 | prevProcessVariable_ *= (inMax - inMin) / inSpan_; |
aberk | 0:6e12a3e5af19 | 91 | accError_ *= (inMax - inMin) / inSpan_; |
aberk | 0:6e12a3e5af19 | 92 | |
aberk | 0:6e12a3e5af19 | 93 | //Make sure the working variables are within the new limits. |
aberk | 0:6e12a3e5af19 | 94 | if (prevProcessVariable_ > 1) { |
aberk | 0:6e12a3e5af19 | 95 | prevProcessVariable_ = 1; |
aberk | 0:6e12a3e5af19 | 96 | } else if (prevProcessVariable_ < 0) { |
aberk | 0:6e12a3e5af19 | 97 | prevProcessVariable_ = 0; |
aberk | 0:6e12a3e5af19 | 98 | } |
aberk | 0:6e12a3e5af19 | 99 | |
aberk | 0:6e12a3e5af19 | 100 | inMin_ = inMin; |
aberk | 0:6e12a3e5af19 | 101 | inMax_ = inMax; |
aberk | 0:6e12a3e5af19 | 102 | inSpan_ = inMax - inMin; |
aberk | 0:6e12a3e5af19 | 103 | |
aberk | 0:6e12a3e5af19 | 104 | } |
aberk | 0:6e12a3e5af19 | 105 | |
pHysiX | 2:b55a16b5f05c | 106 | void PID::setOutputLimits(float outMin, float outMax) |
pHysiX | 2:b55a16b5f05c | 107 | { |
aberk | 0:6e12a3e5af19 | 108 | |
aberk | 0:6e12a3e5af19 | 109 | //Make sure we haven't been given impossible values. |
aberk | 0:6e12a3e5af19 | 110 | if (outMin >= outMax) { |
aberk | 0:6e12a3e5af19 | 111 | return; |
aberk | 0:6e12a3e5af19 | 112 | } |
aberk | 0:6e12a3e5af19 | 113 | |
aberk | 0:6e12a3e5af19 | 114 | //Rescale the working variables to reflect the changes. |
aberk | 0:6e12a3e5af19 | 115 | prevControllerOutput_ *= (outMax - outMin) / outSpan_; |
aberk | 0:6e12a3e5af19 | 116 | |
aberk | 0:6e12a3e5af19 | 117 | //Make sure the working variables are within the new limits. |
aberk | 0:6e12a3e5af19 | 118 | if (prevControllerOutput_ > 1) { |
aberk | 0:6e12a3e5af19 | 119 | prevControllerOutput_ = 1; |
aberk | 0:6e12a3e5af19 | 120 | } else if (prevControllerOutput_ < 0) { |
aberk | 0:6e12a3e5af19 | 121 | prevControllerOutput_ = 0; |
aberk | 0:6e12a3e5af19 | 122 | } |
aberk | 0:6e12a3e5af19 | 123 | |
aberk | 0:6e12a3e5af19 | 124 | outMin_ = outMin; |
aberk | 0:6e12a3e5af19 | 125 | outMax_ = outMax; |
aberk | 0:6e12a3e5af19 | 126 | outSpan_ = outMax - outMin; |
aberk | 0:6e12a3e5af19 | 127 | |
aberk | 0:6e12a3e5af19 | 128 | } |
aberk | 0:6e12a3e5af19 | 129 | |
pHysiX | 2:b55a16b5f05c | 130 | void PID::setTunings(float Kc, float tauI, float tauD) |
pHysiX | 2:b55a16b5f05c | 131 | { |
aberk | 0:6e12a3e5af19 | 132 | |
aberk | 0:6e12a3e5af19 | 133 | //Verify that the tunings make sense. |
aberk | 0:6e12a3e5af19 | 134 | if (Kc == 0.0 || tauI < 0.0 || tauD < 0.0) { |
aberk | 0:6e12a3e5af19 | 135 | return; |
aberk | 0:6e12a3e5af19 | 136 | } |
aberk | 0:6e12a3e5af19 | 137 | |
aberk | 0:6e12a3e5af19 | 138 | //Store raw values to hand back to user on request. |
aberk | 0:6e12a3e5af19 | 139 | pParam_ = Kc; |
aberk | 0:6e12a3e5af19 | 140 | iParam_ = tauI; |
aberk | 0:6e12a3e5af19 | 141 | dParam_ = tauD; |
aberk | 0:6e12a3e5af19 | 142 | |
aberk | 0:6e12a3e5af19 | 143 | float tempTauR; |
aberk | 0:6e12a3e5af19 | 144 | |
aberk | 0:6e12a3e5af19 | 145 | if (tauI == 0.0) { |
aberk | 0:6e12a3e5af19 | 146 | tempTauR = 0.0; |
aberk | 0:6e12a3e5af19 | 147 | } else { |
aberk | 0:6e12a3e5af19 | 148 | tempTauR = (1.0 / tauI) * tSample_; |
aberk | 0:6e12a3e5af19 | 149 | } |
aberk | 0:6e12a3e5af19 | 150 | |
aberk | 0:6e12a3e5af19 | 151 | //For "bumpless transfer" we need to rescale the accumulated error. |
aberk | 0:6e12a3e5af19 | 152 | if (inAuto) { |
aberk | 0:6e12a3e5af19 | 153 | if (tempTauR == 0.0) { |
aberk | 0:6e12a3e5af19 | 154 | accError_ = 0.0; |
aberk | 0:6e12a3e5af19 | 155 | } else { |
aberk | 0:6e12a3e5af19 | 156 | accError_ *= (Kc_ * tauR_) / (Kc * tempTauR); |
aberk | 0:6e12a3e5af19 | 157 | } |
aberk | 0:6e12a3e5af19 | 158 | } |
aberk | 0:6e12a3e5af19 | 159 | |
aberk | 0:6e12a3e5af19 | 160 | Kc_ = Kc; |
aberk | 0:6e12a3e5af19 | 161 | tauR_ = tempTauR; |
aberk | 0:6e12a3e5af19 | 162 | tauD_ = tauD / tSample_; |
aberk | 0:6e12a3e5af19 | 163 | |
aberk | 0:6e12a3e5af19 | 164 | } |
aberk | 0:6e12a3e5af19 | 165 | |
pHysiX | 2:b55a16b5f05c | 166 | void PID::setKP(float KP) |
pHysiX | 2:b55a16b5f05c | 167 | { |
pHysiX | 2:b55a16b5f05c | 168 | Kc_ = KP; |
pHysiX | 2:b55a16b5f05c | 169 | } |
pHysiX | 2:b55a16b5f05c | 170 | |
pHysiX | 2:b55a16b5f05c | 171 | void PID::reset(void) |
pHysiX | 2:b55a16b5f05c | 172 | { |
aberk | 0:6e12a3e5af19 | 173 | |
aberk | 0:6e12a3e5af19 | 174 | float scaledBias = 0.0; |
aberk | 0:6e12a3e5af19 | 175 | |
aberk | 0:6e12a3e5af19 | 176 | if (usingFeedForward) { |
aberk | 0:6e12a3e5af19 | 177 | scaledBias = (bias_ - outMin_) / outSpan_; |
aberk | 0:6e12a3e5af19 | 178 | } else { |
aberk | 0:6e12a3e5af19 | 179 | scaledBias = (realOutput_ - outMin_) / outSpan_; |
aberk | 0:6e12a3e5af19 | 180 | } |
aberk | 0:6e12a3e5af19 | 181 | |
aberk | 0:6e12a3e5af19 | 182 | prevControllerOutput_ = scaledBias; |
aberk | 0:6e12a3e5af19 | 183 | prevProcessVariable_ = (processVariable_ - inMin_) / inSpan_; |
aberk | 0:6e12a3e5af19 | 184 | |
aberk | 0:6e12a3e5af19 | 185 | //Clear any error in the integral. |
aberk | 0:6e12a3e5af19 | 186 | accError_ = 0; |
aberk | 0:6e12a3e5af19 | 187 | |
aberk | 0:6e12a3e5af19 | 188 | } |
aberk | 0:6e12a3e5af19 | 189 | |
pHysiX | 2:b55a16b5f05c | 190 | void PID::setMode(int mode) |
pHysiX | 2:b55a16b5f05c | 191 | { |
aberk | 0:6e12a3e5af19 | 192 | |
aberk | 0:6e12a3e5af19 | 193 | //We were in manual, and we just got set to auto. |
aberk | 0:6e12a3e5af19 | 194 | //Reset the controller internals. |
aberk | 0:6e12a3e5af19 | 195 | if (mode != 0 && !inAuto) { |
aberk | 0:6e12a3e5af19 | 196 | reset(); |
aberk | 0:6e12a3e5af19 | 197 | } |
aberk | 0:6e12a3e5af19 | 198 | |
aberk | 0:6e12a3e5af19 | 199 | inAuto = (mode != 0); |
aberk | 0:6e12a3e5af19 | 200 | |
aberk | 0:6e12a3e5af19 | 201 | } |
aberk | 0:6e12a3e5af19 | 202 | |
pHysiX | 2:b55a16b5f05c | 203 | void PID::setInterval(float interval) |
pHysiX | 2:b55a16b5f05c | 204 | { |
aberk | 0:6e12a3e5af19 | 205 | |
aberk | 0:6e12a3e5af19 | 206 | if (interval > 0) { |
aberk | 0:6e12a3e5af19 | 207 | //Convert the time-based tunings to reflect this change. |
aberk | 0:6e12a3e5af19 | 208 | tauR_ *= (interval / tSample_); |
aberk | 0:6e12a3e5af19 | 209 | accError_ *= (tSample_ / interval); |
aberk | 0:6e12a3e5af19 | 210 | tauD_ *= (interval / tSample_); |
aberk | 0:6e12a3e5af19 | 211 | tSample_ = interval; |
aberk | 0:6e12a3e5af19 | 212 | } |
aberk | 0:6e12a3e5af19 | 213 | |
aberk | 0:6e12a3e5af19 | 214 | } |
aberk | 0:6e12a3e5af19 | 215 | |
pHysiX | 2:b55a16b5f05c | 216 | void PID::setSetPoint(float sp) |
pHysiX | 2:b55a16b5f05c | 217 | { |
aberk | 0:6e12a3e5af19 | 218 | |
aberk | 0:6e12a3e5af19 | 219 | setPoint_ = sp; |
aberk | 0:6e12a3e5af19 | 220 | |
aberk | 0:6e12a3e5af19 | 221 | } |
aberk | 0:6e12a3e5af19 | 222 | |
pHysiX | 2:b55a16b5f05c | 223 | void PID::setProcessValue(float pv) |
pHysiX | 2:b55a16b5f05c | 224 | { |
aberk | 0:6e12a3e5af19 | 225 | |
aberk | 0:6e12a3e5af19 | 226 | processVariable_ = pv; |
aberk | 0:6e12a3e5af19 | 227 | |
aberk | 0:6e12a3e5af19 | 228 | } |
aberk | 0:6e12a3e5af19 | 229 | |
pHysiX | 2:b55a16b5f05c | 230 | void PID::setBias(float bias) |
pHysiX | 2:b55a16b5f05c | 231 | { |
aberk | 0:6e12a3e5af19 | 232 | |
aberk | 0:6e12a3e5af19 | 233 | bias_ = bias; |
aberk | 0:6e12a3e5af19 | 234 | usingFeedForward = 1; |
aberk | 0:6e12a3e5af19 | 235 | |
aberk | 0:6e12a3e5af19 | 236 | } |
aberk | 0:6e12a3e5af19 | 237 | |
pHysiX | 2:b55a16b5f05c | 238 | float PID::compute() |
pHysiX | 2:b55a16b5f05c | 239 | { |
aberk | 0:6e12a3e5af19 | 240 | |
aberk | 0:6e12a3e5af19 | 241 | //Pull in the input and setpoint, and scale them into percent span. |
aberk | 0:6e12a3e5af19 | 242 | float scaledPV = (processVariable_ - inMin_) / inSpan_; |
aberk | 0:6e12a3e5af19 | 243 | |
aberk | 0:6e12a3e5af19 | 244 | if (scaledPV > 1.0) { |
aberk | 0:6e12a3e5af19 | 245 | scaledPV = 1.0; |
aberk | 0:6e12a3e5af19 | 246 | } else if (scaledPV < 0.0) { |
aberk | 0:6e12a3e5af19 | 247 | scaledPV = 0.0; |
aberk | 0:6e12a3e5af19 | 248 | } |
aberk | 0:6e12a3e5af19 | 249 | |
aberk | 0:6e12a3e5af19 | 250 | float scaledSP = (setPoint_ - inMin_) / inSpan_; |
aberk | 0:6e12a3e5af19 | 251 | if (scaledSP > 1.0) { |
aberk | 0:6e12a3e5af19 | 252 | scaledSP = 1; |
aberk | 0:6e12a3e5af19 | 253 | } else if (scaledSP < 0.0) { |
aberk | 0:6e12a3e5af19 | 254 | scaledSP = 0; |
aberk | 0:6e12a3e5af19 | 255 | } |
aberk | 0:6e12a3e5af19 | 256 | |
aberk | 0:6e12a3e5af19 | 257 | float error = scaledSP - scaledPV; |
aberk | 0:6e12a3e5af19 | 258 | |
aberk | 0:6e12a3e5af19 | 259 | //Check and see if the output is pegged at a limit and only |
aberk | 0:6e12a3e5af19 | 260 | //integrate if it is not. This is to prevent reset-windup. |
aberk | 0:6e12a3e5af19 | 261 | if (!(prevControllerOutput_ >= 1 && error > 0) && !(prevControllerOutput_ <= 0 && error < 0)) { |
aberk | 0:6e12a3e5af19 | 262 | accError_ += error; |
aberk | 0:6e12a3e5af19 | 263 | } |
aberk | 0:6e12a3e5af19 | 264 | |
aberk | 0:6e12a3e5af19 | 265 | //Compute the current slope of the input signal. |
aberk | 0:6e12a3e5af19 | 266 | float dMeas = (scaledPV - prevProcessVariable_) / tSample_; |
aberk | 0:6e12a3e5af19 | 267 | |
aberk | 0:6e12a3e5af19 | 268 | float scaledBias = 0.0; |
aberk | 0:6e12a3e5af19 | 269 | |
aberk | 0:6e12a3e5af19 | 270 | if (usingFeedForward) { |
aberk | 0:6e12a3e5af19 | 271 | scaledBias = (bias_ - outMin_) / outSpan_; |
aberk | 0:6e12a3e5af19 | 272 | } |
aberk | 0:6e12a3e5af19 | 273 | |
aberk | 0:6e12a3e5af19 | 274 | //Perform the PID calculation. |
aberk | 0:6e12a3e5af19 | 275 | controllerOutput_ = scaledBias + Kc_ * (error + (tauR_ * accError_) - (tauD_ * dMeas)); |
aberk | 0:6e12a3e5af19 | 276 | |
aberk | 0:6e12a3e5af19 | 277 | //Make sure the computed output is within output constraints. |
aberk | 0:6e12a3e5af19 | 278 | if (controllerOutput_ < 0.0) { |
aberk | 0:6e12a3e5af19 | 279 | controllerOutput_ = 0.0; |
aberk | 0:6e12a3e5af19 | 280 | } else if (controllerOutput_ > 1.0) { |
aberk | 0:6e12a3e5af19 | 281 | controllerOutput_ = 1.0; |
aberk | 0:6e12a3e5af19 | 282 | } |
aberk | 0:6e12a3e5af19 | 283 | |
aberk | 0:6e12a3e5af19 | 284 | //Remember this output for the windup check next time. |
aberk | 0:6e12a3e5af19 | 285 | prevControllerOutput_ = controllerOutput_; |
aberk | 0:6e12a3e5af19 | 286 | //Remember the input for the derivative calculation next time. |
aberk | 0:6e12a3e5af19 | 287 | prevProcessVariable_ = scaledPV; |
aberk | 0:6e12a3e5af19 | 288 | |
aberk | 0:6e12a3e5af19 | 289 | //Scale the output from percent span back out to a real world number. |
aberk | 0:6e12a3e5af19 | 290 | return ((controllerOutput_ * outSpan_) + outMin_); |
aberk | 0:6e12a3e5af19 | 291 | |
aberk | 0:6e12a3e5af19 | 292 | } |
aberk | 0:6e12a3e5af19 | 293 | |
pHysiX | 2:b55a16b5f05c | 294 | float PID::getInMin() |
pHysiX | 2:b55a16b5f05c | 295 | { |
aberk | 0:6e12a3e5af19 | 296 | |
aberk | 0:6e12a3e5af19 | 297 | return inMin_; |
aberk | 0:6e12a3e5af19 | 298 | |
aberk | 0:6e12a3e5af19 | 299 | } |
aberk | 0:6e12a3e5af19 | 300 | |
pHysiX | 2:b55a16b5f05c | 301 | float PID::getInMax() |
pHysiX | 2:b55a16b5f05c | 302 | { |
aberk | 0:6e12a3e5af19 | 303 | |
aberk | 0:6e12a3e5af19 | 304 | return inMax_; |
aberk | 0:6e12a3e5af19 | 305 | |
aberk | 0:6e12a3e5af19 | 306 | } |
aberk | 0:6e12a3e5af19 | 307 | |
pHysiX | 2:b55a16b5f05c | 308 | float PID::getOutMin() |
pHysiX | 2:b55a16b5f05c | 309 | { |
aberk | 0:6e12a3e5af19 | 310 | |
aberk | 0:6e12a3e5af19 | 311 | return outMin_; |
aberk | 0:6e12a3e5af19 | 312 | |
aberk | 0:6e12a3e5af19 | 313 | } |
aberk | 0:6e12a3e5af19 | 314 | |
pHysiX | 2:b55a16b5f05c | 315 | float PID::getOutMax() |
pHysiX | 2:b55a16b5f05c | 316 | { |
aberk | 0:6e12a3e5af19 | 317 | |
aberk | 0:6e12a3e5af19 | 318 | return outMax_; |
aberk | 0:6e12a3e5af19 | 319 | |
aberk | 0:6e12a3e5af19 | 320 | } |
aberk | 0:6e12a3e5af19 | 321 | |
pHysiX | 2:b55a16b5f05c | 322 | float PID::getInterval() |
pHysiX | 2:b55a16b5f05c | 323 | { |
aberk | 0:6e12a3e5af19 | 324 | |
aberk | 0:6e12a3e5af19 | 325 | return tSample_; |
aberk | 0:6e12a3e5af19 | 326 | |
aberk | 0:6e12a3e5af19 | 327 | } |
aberk | 0:6e12a3e5af19 | 328 | |
pHysiX | 2:b55a16b5f05c | 329 | float PID::getPParam() |
pHysiX | 2:b55a16b5f05c | 330 | { |
aberk | 0:6e12a3e5af19 | 331 | |
aberk | 0:6e12a3e5af19 | 332 | return pParam_; |
aberk | 0:6e12a3e5af19 | 333 | |
aberk | 0:6e12a3e5af19 | 334 | } |
aberk | 0:6e12a3e5af19 | 335 | |
pHysiX | 2:b55a16b5f05c | 336 | float PID::getIParam() |
pHysiX | 2:b55a16b5f05c | 337 | { |
aberk | 0:6e12a3e5af19 | 338 | |
aberk | 0:6e12a3e5af19 | 339 | return iParam_; |
aberk | 0:6e12a3e5af19 | 340 | |
aberk | 0:6e12a3e5af19 | 341 | } |
aberk | 0:6e12a3e5af19 | 342 | |
pHysiX | 2:b55a16b5f05c | 343 | float PID::getDParam() |
pHysiX | 2:b55a16b5f05c | 344 | { |
aberk | 0:6e12a3e5af19 | 345 | |
aberk | 0:6e12a3e5af19 | 346 | return dParam_; |
aberk | 0:6e12a3e5af19 | 347 | |
aberk | 0:6e12a3e5af19 | 348 | } |