Mercurial > mbsePi-apps / file comparison
comparison: thermferm/pid.h
thermferm/pid.h
- changeset 363
- 468ec0d96cce
- parent 362
- c92651a54969
- child 492
- 750f2468dec5
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| 362:c92651a54969 | 363:468ec0d96cce |
|---|---|
| 7 | 7 |
| 8 #define PID_TYPE_HEAT 0 /* PID is used for heating */ | 8 #define PID_TYPE_HEAT 0 /* PID is used for heating */ |
| 9 #define PID_TYPE_COOL 1 /* PID is used for cooling */ | 9 #define PID_TYPE_COOL 1 /* PID is used for cooling */ |
| 10 | 10 |
| 11 #define PID_TIMES 60 /* 60 calculations per minute */ | 11 #define PID_TIMES 60 /* 60 calculations per minute */ |
| 12 #define PID_WINDUP_GUARD 10.0 /* Error windup guard */ | |
| 12 | 13 |
| 13 | 14 |
| 14 typedef struct _pid_var { | 15 typedef struct _pid_var { |
| 15 double iMax; /* Maximum allowable integrator state */ | 16 double iMax; /* Maximum allowable integrator state */ |
| 16 double iGain; /* Integral gain */ | 17 double iGain; /* Integral gain */ |
| 17 double pGain; /* Proportional gain */ | 18 double pGain; /* Proportional gain */ |
| 18 double dGain; /* Derivative gain */ | 19 double dGain; /* Derivative gain */ |
| 19 double idleRange; /* Idle range */ | 20 double idleRange; /* Idle range */ |
| 20 | 21 |
| 21 double Input; /* Input value */ | 22 double Input; /* Input value */ |
| 22 double InputD; /* Process input plus derivative */ | |
| 23 double InputLast; /* Process input from last pass */ | |
| 24 double Err; /* Error, diff between input and set point */ | 23 double Err; /* Error, diff between input and set point */ |
| 25 double ErrLast; /* Error from last pass */ | 24 double ErrLast; /* Error from last pass */ |
| 26 double ErrLastLast; /* Error from next last pass */ | 25 double iState; /* Error from next last pass */ |
| 27 double SetP; /* Set point */ | 26 double SetP; /* Set point */ |
| 28 double OutP; /* Output of PID algorithm */ | 27 double OutP; /* Output of PID algorithm */ |
| 29 int Mode; /* Value is 'PID_AUTO' if loop is automatic */ | 28 int Mode; /* Value is 'PID_AUTO' if loop is automatic */ |
| 30 int Type; /* Value is 'HEAT' or 'COOL' */ | 29 int Type; /* Value is 'HEAT' or 'COOL' */ |
| 31 } pid_var; | 30 } pid_var; |
