Li Weiyi
/
BalanceCar
虽然移植完毕,但是不work。需要细调……
PID_v2.h@3:c6caae712d5d, 2016-06-07 (annotated)
- Committer:
- lixianyu
- Date:
- Tue Jun 07 08:14:15 2016 +0000
- Revision:
- 3:c6caae712d5d
- Parent:
- 0:a4d8f5b3c546
??????????work? ?????
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
lixianyu | 0:a4d8f5b3c546 | 1 | #ifndef PID_v2_h |
lixianyu | 0:a4d8f5b3c546 | 2 | #define PID_v2_h |
lixianyu | 0:a4d8f5b3c546 | 3 | #define LIBRARY_VERSION 1.1.2 |
lixianyu | 0:a4d8f5b3c546 | 4 | |
lixianyu | 0:a4d8f5b3c546 | 5 | class PID |
lixianyu | 0:a4d8f5b3c546 | 6 | { |
lixianyu | 0:a4d8f5b3c546 | 7 | |
lixianyu | 0:a4d8f5b3c546 | 8 | |
lixianyu | 0:a4d8f5b3c546 | 9 | public: |
lixianyu | 0:a4d8f5b3c546 | 10 | |
lixianyu | 0:a4d8f5b3c546 | 11 | //Constants used in some of the functions below |
lixianyu | 0:a4d8f5b3c546 | 12 | #define AUTOMATIC 1 |
lixianyu | 0:a4d8f5b3c546 | 13 | #define MANUAL 0 |
lixianyu | 0:a4d8f5b3c546 | 14 | #define DIRECT 0 |
lixianyu | 0:a4d8f5b3c546 | 15 | #define REVERSE 1 |
lixianyu | 0:a4d8f5b3c546 | 16 | |
lixianyu | 0:a4d8f5b3c546 | 17 | //commonly used functions ************************************************************************** |
lixianyu | 0:a4d8f5b3c546 | 18 | PID(double, double, double, int); // Setpoint. Initial tuning parameters are also set here |
lixianyu | 0:a4d8f5b3c546 | 19 | |
lixianyu | 0:a4d8f5b3c546 | 20 | void SetMode(int Mode); // * sets PID to either Manual (0) or Auto (non-0) |
lixianyu | 0:a4d8f5b3c546 | 21 | |
lixianyu | 0:a4d8f5b3c546 | 22 | float Compute(float, float); // * performs the PID calculation. it should be |
lixianyu | 0:a4d8f5b3c546 | 23 | // called every time loop() cycles. ON/OFF and |
lixianyu | 0:a4d8f5b3c546 | 24 | // calculation frequency can be set using SetMode |
lixianyu | 0:a4d8f5b3c546 | 25 | // SetSampleTime respectively |
lixianyu | 0:a4d8f5b3c546 | 26 | |
lixianyu | 0:a4d8f5b3c546 | 27 | void SetOutputLimits(double, double); //clamps the output to a specific range. 0-255 by default, but |
lixianyu | 0:a4d8f5b3c546 | 28 | //it's likely the user will want to change this depending on |
lixianyu | 0:a4d8f5b3c546 | 29 | //the application |
lixianyu | 0:a4d8f5b3c546 | 30 | |
lixianyu | 0:a4d8f5b3c546 | 31 | |
lixianyu | 0:a4d8f5b3c546 | 32 | void SetITermLimits(double, double); |
lixianyu | 0:a4d8f5b3c546 | 33 | //available but not commonly used functions ******************************************************** |
lixianyu | 0:a4d8f5b3c546 | 34 | void SetTunings(double, double, // * While most users will set the tunings once in the |
lixianyu | 0:a4d8f5b3c546 | 35 | double); // constructor, this function gives the user the option |
lixianyu | 0:a4d8f5b3c546 | 36 | // of changing tunings during runtime for Adaptive control |
lixianyu | 0:a4d8f5b3c546 | 37 | void SetControllerDirection(int); // * Sets the Direction, or "Action" of the controller. DIRECT |
lixianyu | 0:a4d8f5b3c546 | 38 | // means the output will increase when error is positive. REVERSE |
lixianyu | 0:a4d8f5b3c546 | 39 | // means the opposite. it's very unlikely that this will be needed |
lixianyu | 0:a4d8f5b3c546 | 40 | // once it is set in the constructor. |
lixianyu | 0:a4d8f5b3c546 | 41 | void SetSampleTime(int); // * sets the frequency, in Milliseconds, with which |
lixianyu | 0:a4d8f5b3c546 | 42 | // the PID calculation is performed. default is 100 |
lixianyu | 0:a4d8f5b3c546 | 43 | |
lixianyu | 0:a4d8f5b3c546 | 44 | |
lixianyu | 0:a4d8f5b3c546 | 45 | |
lixianyu | 0:a4d8f5b3c546 | 46 | //Display functions **************************************************************** |
lixianyu | 0:a4d8f5b3c546 | 47 | double GetKp(); // These functions query the pid for interal values. |
lixianyu | 0:a4d8f5b3c546 | 48 | double GetKi(); // they were created mainly for the pid front-end, |
lixianyu | 0:a4d8f5b3c546 | 49 | double GetKd(); // where it's important to know what is actually |
lixianyu | 0:a4d8f5b3c546 | 50 | int GetMode(); // inside the PID. |
lixianyu | 0:a4d8f5b3c546 | 51 | int GetDirection(); // |
lixianyu | 0:a4d8f5b3c546 | 52 | |
lixianyu | 0:a4d8f5b3c546 | 53 | private: |
lixianyu | 0:a4d8f5b3c546 | 54 | void Initialize(); |
lixianyu | 0:a4d8f5b3c546 | 55 | |
lixianyu | 0:a4d8f5b3c546 | 56 | double dispKp; // * we'll hold on to the tuning parameters in user-entered |
lixianyu | 0:a4d8f5b3c546 | 57 | double dispKi; // format for display purposes |
lixianyu | 0:a4d8f5b3c546 | 58 | double dispKd; // |
lixianyu | 0:a4d8f5b3c546 | 59 | |
lixianyu | 0:a4d8f5b3c546 | 60 | double kp; // * (P)roportional Tuning Parameter |
lixianyu | 0:a4d8f5b3c546 | 61 | double ki; // * (I)ntegral Tuning Parameter |
lixianyu | 0:a4d8f5b3c546 | 62 | double kd; // * (D)erivative Tuning Parameter |
lixianyu | 0:a4d8f5b3c546 | 63 | |
lixianyu | 0:a4d8f5b3c546 | 64 | int controllerDirection; |
lixianyu | 0:a4d8f5b3c546 | 65 | |
lixianyu | 0:a4d8f5b3c546 | 66 | float *myInput; // * Pointers to the Input, Output, and Setpoint variables |
lixianyu | 0:a4d8f5b3c546 | 67 | float *myOutput; // This creates a hard link between the variables and the |
lixianyu | 0:a4d8f5b3c546 | 68 | float *mySetpoint; // PID, freeing the user from having to constantly tell us |
lixianyu | 0:a4d8f5b3c546 | 69 | // what these values are. with pointers we'll just know. |
lixianyu | 0:a4d8f5b3c546 | 70 | |
lixianyu | 0:a4d8f5b3c546 | 71 | unsigned long lastTime; |
lixianyu | 0:a4d8f5b3c546 | 72 | double ITerm, lastInput; |
lixianyu | 0:a4d8f5b3c546 | 73 | |
lixianyu | 0:a4d8f5b3c546 | 74 | unsigned long SampleTime; |
lixianyu | 0:a4d8f5b3c546 | 75 | double outMin, outMax; |
lixianyu | 0:a4d8f5b3c546 | 76 | double errorMin, errorMax; |
lixianyu | 0:a4d8f5b3c546 | 77 | bool inAuto; |
lixianyu | 0:a4d8f5b3c546 | 78 | }; |
lixianyu | 0:a4d8f5b3c546 | 79 | #endif |
lixianyu | 0:a4d8f5b3c546 | 80 | |
lixianyu | 0:a4d8f5b3c546 | 81 |