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From: Xavier L. <Ba...@us...> - 2012-01-28 16:09:20
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- Log -----------------------------------------------------------------
commit 194a925f13cf0074d8da123604f1c5740efddd73
Author: Xavier Lagorce <Xav...@cr...>
Date: Sat Jan 28 17:11:10 2012 +0100
[Controller_Motor_STM32/lib] Added some support for some 2R arms.
The associated functions and generators enable the control of a 2R arm
in effector space (X,Y of the end of the arm) instead of controlling its
two articulations directly.
-----------------------------------------------------------------------
Changes:
diff --git a/elec/boards/Controller_Motor_STM32/Firmwares/Effectors/controller_motor_stm32/controller_motor_stm32_user.mk b/elec/boards/Controller_Motor_STM32/Firmwares/Effectors/controller_motor_stm32/controller_motor_stm32_user.mk
index 523bdbb..6092393 100644
--- a/elec/boards/Controller_Motor_STM32/Firmwares/Effectors/controller_motor_stm32/controller_motor_stm32_user.mk
+++ b/elec/boards/Controller_Motor_STM32/Firmwares/Effectors/controller_motor_stm32/controller_motor_stm32_user.mk
@@ -24,6 +24,7 @@ controller_motor_stm32_USER_CSRC = \
$(controller_motor_stm32_LIB_PATH)/bezier_utils.c \
$(controller_motor_stm32_LIB_PATH)/differential_drive.c \
$(controller_motor_stm32_LIB_PATH)/lift_controller.c \
+ $(controller_motor_stm32_LIB_PATH)/arm2R_controller.c \
$(controller_motor_stm32_SRC_PATH)/can_monitor.c \
$(controller_motor_stm32_SRC_PATH)/main.c \
#
diff --git a/elec/boards/Controller_Motor_STM32/Firmwares/Propulsion_Drive/controller_motor_stm32/controller_motor_stm32_user.mk b/elec/boards/Controller_Motor_STM32/Firmwares/Propulsion_Drive/controller_motor_stm32/controller_motor_stm32_user.mk
index 523bdbb..6092393 100644
--- a/elec/boards/Controller_Motor_STM32/Firmwares/Propulsion_Drive/controller_motor_stm32/controller_motor_stm32_user.mk
+++ b/elec/boards/Controller_Motor_STM32/Firmwares/Propulsion_Drive/controller_motor_stm32/controller_motor_stm32_user.mk
@@ -24,6 +24,7 @@ controller_motor_stm32_USER_CSRC = \
$(controller_motor_stm32_LIB_PATH)/bezier_utils.c \
$(controller_motor_stm32_LIB_PATH)/differential_drive.c \
$(controller_motor_stm32_LIB_PATH)/lift_controller.c \
+ $(controller_motor_stm32_LIB_PATH)/arm2R_controller.c \
$(controller_motor_stm32_SRC_PATH)/can_monitor.c \
$(controller_motor_stm32_SRC_PATH)/main.c \
#
diff --git a/elec/boards/Controller_Motor_STM32/Firmwares/lib/arm2R_controller.c b/elec/boards/Controller_Motor_STM32/Firmwares/lib/arm2R_controller.c
new file mode 100644
index 0000000..f2d8064
--- /dev/null
+++ b/elec/boards/Controller_Motor_STM32/Firmwares/lib/arm2R_controller.c
@@ -0,0 +1,78 @@
+/*
+ * arm2R_controller.c
+ * -----------------
+ * Copyright : (c) 2012, Xavier Lagorce <Xav...@cr...>
+ * Licence : BSD3
+ *
+ * This file is a part of [kro]bot.
+ */
+
+#include "arm2R_controller.h"
+
+typedef struct {
+ uint8_t enabled, tc_ind[2];
+ command_generator_t theta1_s, theta2_s, theta1, theta2;
+} a2Rc_state_t;
+
+a2Rc_state_t ac_state[2];
+
+void a2Rc_init(void) {
+ int i;
+
+ // Init state
+ for (i=0; i<2; i++) {
+ ac_state[i].enabled = 0;
+ }
+ ac_state[ARM1].tc_ind[0] = A2R_ARM1_TC + A2R_TC_X;
+ ac_state[ARM1].tc_ind[1] = A2R_ARM1_TC + A2R_TC_Y;
+ ac_state[ARM2].tc_ind[0] = A2R_ARM2_TC + A2R_TC_X;
+ ac_state[ARM2].tc_ind[1] = A2R_ARM2_TC + A2R_TC_Y;
+}
+
+void a2Rc_start(uint8_t arm,
+ float l1, float l2,
+ uint8_t enc_theta1, uint8_t enc_theta2) {
+
+ uint8_t tc_x, tc_y;
+
+ // Read trajectory controllers identifiers
+ tc_x = ac_state[arm].tc_ind[0];
+ tc_y = ac_state[arm].tc_ind[1];
+
+ // Init Trajectory controllers
+ tc_new_controller(tc_x);
+ tc_new_controller(tc_y);
+ new_a2r_generator(&ac_state[arm].theta1_s,
+ tc_get_position_generator(tc_x),
+ tc_get_speed_generator(tc_x),
+ tc_get_position_generator(tc_y),
+ tc_get_speed_generator(tc_y),
+ l1, l2, enc_theta1, enc_theta2, 1);
+ new_a2r_generator(&ac_state[arm].theta2_s,
+ tc_get_position_generator(tc_x),
+ tc_get_speed_generator(tc_x),
+ tc_get_position_generator(tc_y),
+ tc_get_speed_generator(tc_y),
+ l1, l2, enc_theta1, enc_theta2, 2);
+ new_ramp2_generator(&ac_state[arm].theta1, 0.0, &ac_state[arm].theta1_s);
+ new_ramp2_generator(&ac_state[arm].theta2, 0.0, &ac_state[arm].theta2_s);
+
+ start_generator(&ac_state[arm].theta1_s);
+ start_generator(&ac_state[arm].theta2_s);
+ start_generator(&ac_state[arm].theta1);
+ start_generator(&ac_state[arm].theta2);
+}
+
+void a2Rc_goto_position_x(uint8_t arm, float position, float speed, float acc) {
+ tc_goto(arm+A2R_TC_X, position, speed, acc);
+}
+void a2Rc_goto_position_y(uint8_t arm, float position, float speed, float acc) {
+ tc_goto(arm+A2R_TC_Y, position, speed, acc);
+}
+
+command_generator_t* a2Rc_get_first_articulation_gen(uint8_t arm) {
+ return &ac_state[arm].theta1;
+}
+command_generator_t* a2Rc_get_second_articulation_gen(uint8_t arm) {
+ return &ac_state[arm].theta2;
+}
diff --git a/elec/boards/Controller_Motor_STM32/Firmwares/lib/arm2R_controller.h b/elec/boards/Controller_Motor_STM32/Firmwares/lib/arm2R_controller.h
new file mode 100644
index 0000000..4620a47
--- /dev/null
+++ b/elec/boards/Controller_Motor_STM32/Firmwares/lib/arm2R_controller.h
@@ -0,0 +1,70 @@
+/*
+ * arm2R_controller.h
+ * -----------------
+ * Copyright : (c) 2012, Xavier Lagorce <Xav...@cr...>
+ * Licence : BSD3
+ *
+ * This file is a part of [kro]bot.
+ */
+
+#ifndef __ARM2R_CONTROLLER_H
+#define __ARM2R_CONTROLLER_H
+
+#include "motor_controller.h"
+#include "trajectory_controller.h"
+#include "command_generator.h"
+
+#define ARM1 0
+#define ARM2 1
+
+#ifndef A2R_ARM1_TC
+ #define A2R_ARM1_TC 0
+#endif
+#ifndef A2R_ARM2_TC
+ #define A2R_ARM2_TC 2
+#endif
+
+#define A2R_TC_X 0
+#define A2R_TC_Y 1
+
+/*
+ * Initializes data structures associated with the arm 2R controller
+ */
+void a2Rc_init(void);
+
+/*
+ * Initializes a particular arm controller and configure the associated
+ * generators
+ * - arm : ID of the arm controller to start
+ * - l1, l2 : length of the two segments of the arm
+ * - enc_theta1, enc_theta2 : IDs of the encoders measuring the position
+ * of the two articulations
+ */
+void a2Rc_start(uint8_t arm,
+ float l1, float l2,
+ uint8_t enc_theta1, uint8_t enc_theta2);
+
+/*
+ * Moves an arm2R controller along an axis.
+ * - arm : ID of the arm to move
+ * - position : position on the axis to go to
+ * - speed : movement speed along the axis
+ * - acc : movement acceleration along the axis
+ */
+void a2Rc_goto_position_x(uint8_t arm, float position, float speed, float acc);
+void a2Rc_goto_position_y(uint8_t arm, float position, float speed, float acc);
+
+/*
+ * Get the command generator outputing the reference position for
+ * the first articulation
+ * - arm : ID of the arm of which to get the generator
+ */
+command_generator_t* a2Rc_get_first_articulation_gen(uint8_t arm);
+/*
+ * Get the command generator outputing the reference position for
+ * the second articulation
+ * - arm : ID of the arm of which to get the generator
+ */
+command_generator_t* a2Rc_get_second_articulation_gen(uint8_t arm);
+
+#endif /* __ARM2R_CONTROLLER_H */
diff --git a/elec/boards/Controller_Motor_STM32/Firmwares/lib/command_generator.c b/elec/boards/Controller_Motor_STM32/Firmwares/lib/command_generator.c
index 0d1145a..3b36e70 100644
--- a/elec/boards/Controller_Motor_STM32/Firmwares/lib/command_generator.c
+++ b/elec/boards/Controller_Motor_STM32/Firmwares/lib/command_generator.c
@@ -98,12 +98,45 @@ command_generator_t* new_hd_generator(command_generator_t *generator,
return generator;
}
+command_generator_t* new_a2r_generator(command_generator_t *generator,
+ command_generator_t *linear_pos_x,
+ command_generator_t *linear_speed_x,
+ command_generator_t *linear_pos_y,
+ command_generator_t *linear_speed_y,
+ float l1, float l2,
+ uint8_t enc_theta1, uint8_t enc_theta2,
+ uint8_t type) {
+ switch (type) {
+ case 1: // Back wheel
+ generator->type.t = GEN_AC_T1;
+ break;
+ case 2: // Right-front wheel
+ generator->type.t = GEN_AC_T2;
+ break;
+ default:
+ return NULL;
+ break;
+ }
+ generator->type.callback.type = GEN_CALLBACK_NONE;
+ generator->a2r.linear_pos_x = linear_pos_x;
+ generator->a2r.linear_speed_x = linear_speed_x;
+ generator->a2r.linear_pos_x = linear_pos_y;
+ generator->a2r.linear_speed_x = linear_speed_y;
+ generator->a2r.l1 = l1;
+ generator->a2r.l2 = l2;
+ generator->a2r.enc_theta1 = enc_theta1;
+ generator->a2r.enc_theta2 = enc_theta2;
+
+ return generator;
+}
+
command_generator_t* adjust_value(command_generator_t *generator, float value) {
uint8_t type = generator->type.t;
if (type != GEN_DD_RIGHT && type != GEN_DD_LEFT
- && type != GEN_HD_B && type != GEN_HD_RF && type != GEN_HD_LF) {
+ && type != GEN_HD_B && type != GEN_HD_RF && type != GEN_HD_LF
+ && type != GEN_AC_T1 && type != GEN_AC_T2) {
generator->type.last_output = value;
return generator;
} else {
@@ -160,7 +193,8 @@ command_generator_t* remove_callback(command_generator_t *generator) {
float get_output_value(command_generator_t *generator) {
int32_t cur_time;
- float speed, dt, u1, u2, u_x, u_y, w;
+ float speed, dt, u1, u2, u_x, u_y, w, theta1, theta2;
+ float l1, l2, s1, c1, s2, c2;
if (generator->type.state != GEN_STATE_RUNNING)
return generator->type.last_output;
@@ -235,6 +269,32 @@ float get_output_value(command_generator_t *generator) {
generator->type.last_output = MAX(generator->type.last_output, -generator->hd.max_speed);
}
break;
+ case GEN_AC_T1:
+ case GEN_AC_T2:
+ // Update position generators to allow callbacks
+ get_output_value(generator->a2r.linear_pos_x);
+ get_output_value(generator->a2r.linear_pos_y);
+ // Compute output
+ u_x = get_output_value(generator->a2r.linear_speed_x);
+ u_y = get_output_value(generator->a2r.linear_speed_y);
+ l1 = generator->a2r.l1;
+ l2 = generator->a2r.l2;
+ theta1 = getEncoderPosition_f(generator->a2r.enc_theta1);
+ theta2 = getEncoderPosition_f(generator->a2r.enc_theta2);
+ c1 = cos(theta1);
+ c2 = cos(theta2);
+ s1 = sin(theta1);
+ s2 = sin(theta2);
+ w = -l1*l2*s1*c2+l1*l2*s2*c1;
+ switch (generator->type.t) {
+ case GEN_AC_T1:
+ generator->type.last_output = (-l1*s1*u_x+l2*s2*u_y)/w;
+ break;
+ case GEN_AC_T2:
+ generator->type.last_output = (-l1*c1*u_x+l2*c2*u_y)/w;
+ break;
+ }
+ break;
}
switch (generator->type.callback.type) {
diff --git a/elec/boards/Controller_Motor_STM32/Firmwares/lib/command_generator.h b/elec/boards/Controller_Motor_STM32/Firmwares/lib/command_generator.h
index 3fa2b6a..bd5ae8e 100644
--- a/elec/boards/Controller_Motor_STM32/Firmwares/lib/command_generator.h
+++ b/elec/boards/Controller_Motor_STM32/Firmwares/lib/command_generator.h
@@ -15,6 +15,7 @@
#include <drv/timer.h>
#include <math.h>
+#include "encoder.h"
// Generator types
#define GEN_NONE 0 // No type, the generator is not initialized.
@@ -26,9 +27,12 @@
// drive.
#define GEN_DD_RIGHT 5 // Outputs the right wheel speed for a differential
// drive.
-#define GEN_HD_B 6 // Outpus the back wheel speed for an holonomic drive.
-#define GEN_HD_RF 7 // Outpus the right-front wheel speed for an holonomic drive.
-#define GEN_HD_LF 8 // Outpus the left-front wheel speed for an holonomic drive.
+#define GEN_HD_B 6 // Outputs the back wheel speed for an holonomic drive.
+#define GEN_HD_RF 7 // Outputs the right-front wheel speed for an holonomic drive.
+#define GEN_HD_LF 8 // Outputs the left-front wheel speed for an holonomic drive.
+#define GEN_AC_T1 9 // Outputs the angle of the first articulation of a RR arm
+#define GEN_AC_T2 10 // Outputs the angle of the second articulation of a RR arm
+
// Generator states
#define GEN_STATE_PAUSE 0 // The output is freezed.
@@ -96,6 +100,18 @@ typedef struct {
float max_speed;
} hd_generator_t;
+typedef struct {
+ placeholder_generator_t gen;
+ command_generator_t *linear_pos_x;
+ command_generator_t *linear_speed_x;
+ command_generator_t *linear_pos_y;
+ command_generator_t *linear_speed_y;
+ float l1;
+ float l2;
+ uint8_t enc_theta1;
+ uint8_t enc_theta2;
+} a2r_generator_t;
+
// Usable generator meta-type
union _command_generator_t {
placeholder_generator_t type;
@@ -104,6 +120,7 @@ union _command_generator_t {
ramp2_generator_t ramp2;
dd_generator_t dd;
hd_generator_t hd;
+ a2r_generator_t a2r;
};
/* Initializes a new Constant Generator.
@@ -187,6 +204,35 @@ command_generator_t* new_hd_generator(command_generator_t *generator,
float wheel_radius, float struct_radius, float max_speed,
uint8_t type);
+/* Initializes a new 2R arm controller generator.
+ * - generator : pointer to the generator to initialize
+ * - linear_pos_x : pointer to the generator giving the integrates of linear_speed_x. This
+ * generator will be called at each computation to allow update in parallel
+ * with linear_speed.
+ * - linear_speed_x : pointer to the generator giving the linear speed along the x axis of
+ * the arm end.
+ * - linear_pos_y : pointer to the generator giving the integrates of linear_speed_y. This
+ * generator will be called at each computation to allow update in parallel
+ * with linear_speed.
+ * - linear_speed_y : pointer to the generator giving the linear speed along the y axis of
+ * the arm end.
+ * - l1 : length of the first segment of the arm.
+ * - l2 : length of the second segment of the arm.
+ * - enc_theta1 : ID of the encoder measuring the first articulation position
+ * - enc_theta2 : ID of the encoder measuring the second articulation position
+ * - type :
+ * o 1 is the first articulation
+ * o 2 is the second articulation
+ */
+command_generator_t* new_a2r_generator(command_generator_t *generator,
+ command_generator_t *linear_pos_x,
+ command_generator_t *linear_speed_x,
+ command_generator_t *linear_pos_y,
+ command_generator_t *linear_speed_y,
+ float l1, float l2,
+ uint8_t enc_theta1, uint8_t enc_theta2,
+ uint8_t type);
+
/*
* Adjusts the current output value of 'generator' to 'value'.
*/
hooks/post-receive
--
krobot
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