sef
Dependencies: mbed
Fork of Bewegungen_mit_Sensor by
LowpassFilter.h
- Committer:
- EHess
- Date:
- 2017-05-16
- Revision:
- 2:365bf16abbf6
- Parent:
- 1:d40ff07e2fe0
File content as of revision 2:365bf16abbf6:
#ifndef LOWPASS_FILTER_H_ #define LOWPASS_FILTER_H_ #include <cstdlib> #include <cmath> //E. Hess //LowpassFilter.cpp /** * This class implements a time-discrete 2nd order low-pass filter for a series of data values. * This filter can typically be used within a periodic task that takes measurements that need * to be filtered, like speed or position values. */ class LowpassFilter { public: LowpassFilter(); virtual ~LowpassFilter(); void reset(); void reset(float value); void setPeriod(float period); void setFrequency(float frequency); float getFrequency(); float filter(float value); private: float period; float frequency; float a11, a12, a21, a22, b1, b2; float x1, x2; }; #endif