filter.h File Reference

this is the header file of filter.c, which defines the structure of filter algorithm. More...

Go to the source code of this file.

Data Structures
struct	Filter_Structure_t
	structure of low-pass filter algorithm More...

Functions
float	filter_update_value (Filter_Structure_t *param, short value)
	update the output value of the first-order low-pass filter More...
void	filter_config (void)
	configure low-pass filter parameters More...

Variables
volatile Filter_Structure_t	velocity_filter
	motor rotation speed low pass filter handle More...

Detailed Description

this is the header file of filter.c, which defines the structure of filter algorithm.

Author

Lao·Zhu

Version

V1.0.1

Date

9. October 2021

Definition in file filter.h.

Function Documentation

filter_config()

void filter_config

(

void

)

configure low-pass filter parameters

Definition at line 45 of file filter.c.

References filter_coefficient_config(), SPEED_COEFFICIENT, SPEED_UP_FREQ, TIM13_FREQUENCY, and velocity_filter.

Referenced by main().

filter_update_value()

float filter_update_value	(	Filter_Structure_t *	param,
		short	value
	)

update the output value of the first-order low-pass filter

Parameters

[in]	param	first order low pass filter parameter handler
[in]	value	the sampled value to be filtered at this moment

Return values

current

calculation results of low-pass filter

Definition at line 56 of file filter.c.

References Filter_Structure_t::coefficient1, Filter_Structure_t::coefficient2, Filter_Structure_t::current_result, and Filter_Structure_t::last_result.

Referenced by encoder_update_speed().

Variable Documentation

velocity_filter

volatile Filter_Structure_t velocity_filter

extern

motor rotation speed low pass filter handle

Definition at line 19 of file filter.c.

Referenced by encoder_update_speed(), and filter_config().