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Diffstat (limited to 'src/modules/attitude_estimator_so3_comp/attitude_estimator_so3_comp_params.h')
-rwxr-xr-x | src/modules/attitude_estimator_so3_comp/attitude_estimator_so3_comp_params.h | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/src/modules/attitude_estimator_so3_comp/attitude_estimator_so3_comp_params.h b/src/modules/attitude_estimator_so3_comp/attitude_estimator_so3_comp_params.h new file mode 100755 index 000000000..f00695630 --- /dev/null +++ b/src/modules/attitude_estimator_so3_comp/attitude_estimator_so3_comp_params.h @@ -0,0 +1,44 @@ +/* + * Author: Hyon Lim <limhyon@gmail.com, hyonlim@snu.ac.kr> + * + * @file attitude_estimator_so3_comp_params.h + * + * Implementation of nonlinear complementary filters on the SO(3). + * This code performs attitude estimation by using accelerometer, gyroscopes and magnetometer. + * Result is provided as quaternion, 1-2-3 Euler angle and rotation matrix. + * + * Theory of nonlinear complementary filters on the SO(3) is based on [1]. + * Quaternion realization of [1] is based on [2]. + * Optmized quaternion update code is based on Sebastian Madgwick's implementation. + * + * References + * [1] Mahony, R.; Hamel, T.; Pflimlin, Jean-Michel, "Nonlinear Complementary Filters on the Special Orthogonal Group," Automatic Control, IEEE Transactions on , vol.53, no.5, pp.1203,1218, June 2008 + * [2] Euston, M.; Coote, P.; Mahony, R.; Jonghyuk Kim; Hamel, T., "A complementary filter for attitude estimation of a fixed-wing UAV," Intelligent Robots and Systems, 2008. IROS 2008. IEEE/RSJ International Conference on , vol., no., pp.340,345, 22-26 Sept. 2008 + */ + +#include <systemlib/param/param.h> + +struct attitude_estimator_so3_comp_params { + float Kp; + float Ki; + float roll_off; + float pitch_off; + float yaw_off; +}; + +struct attitude_estimator_so3_comp_param_handles { + param_t Kp, Ki; + param_t roll_off, pitch_off, yaw_off; +}; + +/** + * Initialize all parameter handles and values + * + */ +int parameters_init(struct attitude_estimator_so3_comp_param_handles *h); + +/** + * Update all parameters + * + */ +int parameters_update(const struct attitude_estimator_so3_comp_param_handles *h, struct attitude_estimator_so3_comp_params *p); |