Paparazzi UAS v7.0_unstable
Paparazzi is a free software Unmanned Aircraft System.
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nps_sensor_sideslip.c
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1/*
2 * Copyright (C) 2016 Johan Maurin, Gautier Hattenberger
3 *
4 * This file is part of paparazzi.
5 *
6 * paparazzi is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2, or (at your option)
9 * any later version.
10 *
11 * paparazzi is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with paparazzi; see the file COPYING. If not, see
18 * <http://www.gnu.org/licenses/>.
19 */
20
28#include "nps_sensor_sideslip.h"
29
30#include "generated/airframe.h"
31#include <math.h>
32
33#include "std.h"
34#include "nps_fdm.h"
35#include "nps_random.h"
36#include "nps_sensors.h"
37
39#ifndef NPS_SIDESLIP_DT
40#define NPS_SIDESLIP_DT 0.01
41#endif
42
44#ifndef NPS_SIDESLIP_NOISE_STD_DEV
45#define NPS_SIDESLIP_NOISE_STD_DEV 0.001
46#endif
47
48#ifndef NPS_SIDESLIP_OFFSET
49#define NPS_SIDESLIP_OFFSET 0
50#endif
51
52
53void nps_sensor_sideslip_init(struct NpsSensorSideSlip *sideslip, double time)
54{
55 sideslip->value = 0.;
56 sideslip->offset = NPS_SIDESLIP_OFFSET;
58 sideslip->next_update = time;
59 sideslip->data_available = FALSE;
60}
61
62
63void nps_sensor_sideslip_run_step(struct NpsSensorSideSlip *sideslip, double time)
64{
65
66 if (time < sideslip->next_update) {
67 return;
68 }
69
70 /* equivalent airspeed + sensor offset */
71 sideslip->value = fdm.sideslip + sideslip->offset;
72 /* add noise with std dev rad */
73 sideslip->value += get_gaussian_noise() * sideslip->noise_std_dev;
74
75 sideslip->next_update += NPS_SIDESLIP_DT;
76 sideslip->data_available = TRUE;
77}
78
uint16_t foo
Definition main_demo5.c:58
double sideslip
sideslip angle in rad
Definition nps_fdm.h:116
struct NpsFdm fdm
Holds all necessary NPS FDM state information.
double get_gaussian_noise(void)
Definition nps_random.c:109
#define NPS_SIDESLIP_NOISE_STD_DEV
standard deviation in radian (default 0.001 rad)
void nps_sensor_sideslip_run_step(struct NpsSensorSideSlip *sideslip, double time)
#define NPS_SIDESLIP_OFFSET
void nps_sensor_sideslip_init(struct NpsSensorSideSlip *sideslip, double time)
#define NPS_SIDESLIP_DT
10Hz default
Simulated Angle Of Attack of the Wind for NPS simulator.
double value
sideslip reading in radian
double offset
offset in meters/second
double noise_std_dev
noise standard deviation
#define TRUE
Definition std.h:4
#define FALSE
Definition std.h:5