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39 lines
895 B
C++
39 lines
895 B
C++
/* A PID controller.
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*
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* Author: Steffen Vogel <post@steffenvogel.de>
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* SPDX-FileCopyrightText: 2014-2023 Institute for Automation of Complex Power Systems, RWTH Aachen University
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* SPDX-License-Identifier: Apache-2.0
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*/
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#pragma once
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namespace villas {
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namespace dsp {
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class PID {
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protected:
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double dt;
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double max;
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double min;
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double Kp;
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double Kd;
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double Ki;
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double pre_error;
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double integral;
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public:
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// Kp - proportional gain
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// Ki - Integral gain
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// Kd - derivative gain
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// dt - loop interval time
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// max - maximum value of manipulated variable
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// min - minimum value of manipulated variable
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PID(double _dt, double _max, double _min, double _Kp, double _Kd, double _Ki);
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// Returns the manipulated variable given a setpoint and current process value
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double calculate(double setpoint, double pv);
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};
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} // namespace dsp
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} // namespace villas
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