diff options
Diffstat (limited to 'control/zone.hpp')
| -rw-r--r-- | control/zone.hpp | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/control/zone.hpp b/control/zone.hpp index 2185afa..fad2ae6 100644 --- a/control/zone.hpp +++ b/control/zone.hpp @@ -1,3 +1,6 @@ +// PID controls (c) 2018 Raptor Engineering, LLC +// Licensed for use with Raptor Computing Systems machines only + #pragma once #include <chrono> #include <vector> @@ -328,6 +331,18 @@ class Zone void requestSpeedDecrease(uint64_t targetDelta); /** + * @brief Run PID algorithm based on provided error, Kp, Ki, and Kd + * values. + * + * @param[in] error - Current error value + * @param[in] integrator_timestep - Integrator time step + * @param[in] kp - PID proportional constant + * @param[in] ki - PID integral constant + * @param[in] kd - PID derivative constant + */ + void runPidLoop(int64_t error, uint64_t integrator_timestep, int64_t kp, int64_t ki, int64_t kd); + + /** * @brief Callback function for the increase timer that delays * processing of requested speed increases while fans are increasing */ @@ -340,6 +355,11 @@ class Zone void decTimerExpired(); /** + * @brief Callback function for the PID timer + */ + void pidTimerExpired(); + + /** * @brief Get the event pointer used with this zone's timers * * @return - The Dbus event pointer for timers @@ -502,6 +522,31 @@ class Zone uint64_t _requestSpeedBase = 0; /** + * PID active + */ + bool _pidActive = false; + bool _pidActivePrev = false; + + /** + * PID integrator + */ + int64_t _pidIntegrator = 0; + + /** + * PID values + */ + int64_t _pidLastError = 0; + uint64_t _pidLastIntegratorTimestep = 0; + int64_t _pidLastKp = 0; + int64_t _pidLastKi = 0; + int64_t _pidLastKd = 0; + + /** + * PID prior state tracker + */ + int64_t _pidPrevError = 0; + + /** * Speed increase delay in seconds */ std::chrono::seconds _incDelay; @@ -522,6 +567,11 @@ class Zone phosphor::fan::util::Timer _decTimer; /** + * The PID timer object + */ + phosphor::fan::util::Timer _pidTimer; + + /** * Dbus event used on set speed event timers */ phosphor::fan::event::EventPtr& _sdEvents; |
