| | |
| | | #define DEG2RAD (0.017453292519943295769236907684886f) |
| | | #define RAD2DEG (57.295779513082320876798154814105f) |
| | | #define MC_CLAMP(v, lo, hi) ((v) < (lo) ? (lo) : (((v) > (hi)) ? (hi) : (v))) |
| | | /* 当航向误差逼近 ±π 时的判决窗口(约 0.5°) */ |
| | | #define MC_HEADING_PI_EPS (0.00872664626f) |
| | | |
| | | /* 将角度约束到 [-pi, pi],避免航向跳变 */ |
| | | static float mc_wrap_angle(float angle) |
| | |
| | | return angle; |
| | | } |
| | | |
| | | /* 在误差接近 ±π 时保持上一周期的转向方向,避免来回反转 */ |
| | | static float mc_heading_error_with_hysteresis(MC_State *state, float desired_heading) |
| | | { |
| | | float err = mc_wrap_angle(desired_heading - state->heading_rad); |
| | | float abs_err = fabsf(err); |
| | | float pi_delta = (float)M_PI - abs_err; |
| | | |
| | | if (pi_delta <= MC_HEADING_PI_EPS) |
| | | { |
| | | float preferred_sign = state->last_turn_sign; |
| | | if (preferred_sign == 0.0f) |
| | | { |
| | | preferred_sign = (err >= 0.0f) ? 1.0f : -1.0f; |
| | | } |
| | | float old_err = err; |
| | | err = preferred_sign * abs_err; |
| | | state->last_turn_sign = preferred_sign; |
| | | |
| | | } |
| | | else if (abs_err > 1.0e-6f) |
| | | { |
| | | state->last_turn_sign = (err > 0.0f) ? 1.0f : -1.0f; |
| | | } |
| | | |
| | | return err; |
| | | } |
| | | |
| | | /* 读取路径点,索引越界时截到末尾 */ |
| | | static void mc_get_point(const MC_State *state, HIDO_UINT32 idx, float outPt[2]) |
| | | { |
| | |
| | | return dist; |
| | | } |
| | | |
| | | /* 搜索当前位置最近的路径点 */ |
| | | static HIDO_UINT32 mc_find_nearest(const MC_State *state) |
| | | /* 数学坐标(东为 0°,逆时针为正)→ 罗盘坐标(北为 0°,顺时针为正) */ |
| | | static float mc_math_rad_to_compass_deg(float heading_rad) |
| | | { |
| | | float best_dist = 1.0e9f; |
| | | HIDO_UINT32 best_idx = state->nearest_index; |
| | | float pos[2] = {state->pos[0], state->pos[1]}; |
| | | |
| | | for (HIDO_UINT32 i = 0; i < state->path_count; i++) |
| | | float compass_deg = 90.0f - (heading_rad * RAD2DEG); |
| | | while (compass_deg >= 360.0f) |
| | | { |
| | | float point[2]; |
| | | mc_get_point(state, i, point); |
| | | float dist_sq = mc_distance_sq(point, pos); |
| | | if (dist_sq < best_dist) |
| | | { |
| | | best_dist = dist_sq; |
| | | best_idx = i; |
| | | } |
| | | compass_deg -= 360.0f; |
| | | } |
| | | return best_idx; |
| | | while (compass_deg < 0.0f) |
| | | { |
| | | compass_deg += 360.0f; |
| | | } |
| | | return compass_deg; |
| | | } |
| | | |
| | | /* 沿路径累积距离,直到达到前视目标 */ |
| | | /* 罗盘坐标(北为 0°,顺时针为正)→ 数学坐标(东为 0°,逆时针为正) */ |
| | | static float mc_compass_deg_to_math_rad(float heading_deg) |
| | | { |
| | | float math_deg = 90.0f - heading_deg; |
| | | return mc_wrap_angle(math_deg * DEG2RAD); |
| | | } |
| | | |
| | | /* 判断车辆是否已经"到达"某个路径点 |
| | | * 标准:距离该点小于阈值(0.5米)即为到达 */ |
| | | static HIDO_BOOL mc_is_point_reached(const MC_State *state, HIDO_UINT32 point_idx) |
| | | { |
| | | if (point_idx >= state->path_count) |
| | | { |
| | | return HIDO_FALSE; |
| | | } |
| | | |
| | | float pos[2] = {state->pos[0], state->pos[1]}; |
| | | float point[2]; |
| | | mc_get_point(state, point_idx, point); |
| | | |
| | | float dist = mc_distance(pos, point); |
| | | |
| | | /* 定义"到达"阈值为0.5米 */ |
| | | const float REACH_THRESHOLD_M = 0.5f; |
| | | |
| | | return (dist < REACH_THRESHOLD_M) ? HIDO_TRUE : HIDO_FALSE; |
| | | } |
| | | |
| | | /* 搜索当前位置最近的路径点(只允许向前推进,必须到达才推进) |
| | | * 类似航点导航:必须先到达航点0,才能导航到航点1 */ |
| | | static HIDO_UINT32 mc_find_nearest(const MC_State *state) |
| | | { |
| | | HIDO_UINT32 current_idx = state->nearest_index; |
| | | |
| | | /* 检查是否到达当前点 */ |
| | | if (mc_is_point_reached(state, current_idx) == HIDO_TRUE) |
| | | { |
| | | /* 到达了,推进到下一个点(如果不是最后一个) */ |
| | | if (current_idx < state->path_count - 1U) |
| | | { |
| | | return current_idx + 1U; |
| | | } |
| | | } |
| | | |
| | | /* 否则保持当前索引不变 */ |
| | | return current_idx; |
| | | } |
| | | |
| | | /* 沿路径累积距离,直到达到前视目标 |
| | | * 注意:lookahead点始终至少是start_idx的下一个点,确保顺序导航 */ |
| | | static HIDO_UINT32 mc_find_lookahead(const MC_State *state, HIDO_UINT32 start_idx, float lookahead_m) |
| | | { |
| | | float accum = 0.0f; |
| | | float current[2]; |
| | | mc_get_point(state, start_idx, current); |
| | | |
| | | for (HIDO_UINT32 i = start_idx; i < state->path_count - 1U; i++) |
| | | /* 如果已经是最后一个点,直接返回 */ |
| | | if (start_idx >= state->path_count - 1U) |
| | | { |
| | | float next[2]; |
| | | mc_get_point(state, i + 1U, next); |
| | | float seg = mc_distance(current, next); |
| | | accum += seg; |
| | | if (accum >= lookahead_m) |
| | | { |
| | | return i + 1U; |
| | | } |
| | | current[0] = next[0]; |
| | | current[1] = next[1]; |
| | | return state->path_count - 1U; |
| | | } |
| | | return state->path_count - 1U; |
| | | |
| | | /* lookahead点至少是start_idx的下一个点(顺序导航:必须先经过下一个点) */ |
| | | HIDO_UINT32 next_idx = start_idx + 1U; |
| | | |
| | | /* 简化逻辑:直接返回下一个点,确保按顺序访问每个航点 */ |
| | | return next_idx; |
| | | } |
| | | |
| | | /* 计算带符号横向误差(左正右负) */ |
| | |
| | | float vec_y = start_point[1] - state->pos[1]; |
| | | float dist = mc_distance(start_point, state->pos); |
| | | |
| | | float desired_heading = arm_atan2_f32(vec_y, vec_x); |
| | | float heading_err = mc_wrap_angle(desired_heading - state->heading_rad); |
| | | float desired_heading; |
| | | arm_status status = arm_atan2_f32(vec_y, vec_x, &desired_heading); |
| | | out->target_heading_deg = mc_math_rad_to_compass_deg(desired_heading); |
| | | float heading_err = mc_heading_error_with_hysteresis(state, desired_heading); |
| | | float yaw_rate_cmd = state->config.heading_kp * heading_err; |
| | | yaw_rate_cmd = MC_CLAMP(yaw_rate_cmd, -state->config.max_turn_rate, state->config.max_turn_rate); |
| | | |
| | | |
| | | float forward = 0.0f; |
| | | if (dist > state->config.start_pos_tolerance_m) |
| | | { |
| | |
| | | /* 阶段:纯追踪 + 航向/横向误差补偿 */ |
| | | static void mc_compute_follow_path(MC_State *state, float dt_s, MC_Output *out) |
| | | { |
| | | /* 安全检查:路径必须至少有1个点 */ |
| | | if (state->path_count == 0U) |
| | | { |
| | | out->forward_mps = 0.0f; |
| | | out->turn_rate = 0.0f; |
| | | out->active = HIDO_FALSE; |
| | | return; |
| | | } |
| | | |
| | | HIDO_UINT32 nearest_idx = mc_find_nearest(state); |
| | | |
| | | /* 安全检查:nearest_idx 必须在有效范围内 */ |
| | | if (nearest_idx >= state->path_count) |
| | | { |
| | | nearest_idx = state->path_count - 1U; |
| | | } |
| | | state->nearest_index = nearest_idx; |
| | | |
| | | float lookahead = state->config.lookahead_min_m; |
| | | float speed_ratio = MC_CLAMP(state->speed_mps / state->config.max_forward_mps, 0.0f, 1.0f); |
| | | lookahead += (state->config.lookahead_max_m - state->config.lookahead_min_m) * speed_ratio; |
| | | HIDO_UINT32 lookahead_idx = mc_find_lookahead(state, nearest_idx, lookahead); |
| | | |
| | | /* 安全检查:lookahead_idx 必须在有效范围内 */ |
| | | if (lookahead_idx >= state->path_count) |
| | | { |
| | | lookahead_idx = state->path_count - 1U; |
| | | } |
| | | state->lookahead_index = lookahead_idx; |
| | | |
| | | /* 调试:每20帧输出一次路径跟踪状态 */ |
| | | static HIDO_UINT32 s_path_log_idx = 0U; |
| | | static HIDO_UINT32 s_last_nearest = 0U; |
| | | static HIDO_UINT32 s_last_lookahead = 0U; |
| | | |
| | | /* 如果索引发生变化,立即输出LOG */ |
| | | HIDO_BOOL index_changed = (nearest_idx != s_last_nearest) || (lookahead_idx != s_last_lookahead); |
| | | |
| | | if ((s_path_log_idx++ % 20U) == 0U || index_changed == HIDO_TRUE) |
| | | { |
| | | float nearest_pt[2]; |
| | | mc_get_point(state, nearest_idx, nearest_pt); |
| | | float dist_to_nearest = mc_distance(nearest_pt, state->pos); |
| | | HIDO_BOOL reached = mc_is_point_reached(state, nearest_idx); |
| | | |
| | | /* 使用整数表示法打印浮点数 */ |
| | | int pos_x_int = (int)state->pos[0]; |
| | | int pos_x_frac = (int)(fabsf(state->pos[0] - pos_x_int) * 100); |
| | | int pos_y_int = (int)state->pos[1]; |
| | | int pos_y_frac = (int)(fabsf(state->pos[1] - pos_y_int) * 100); |
| | | int near_x_int = (int)nearest_pt[0]; |
| | | int near_x_frac = (int)(fabsf(nearest_pt[0] - near_x_int) * 100); |
| | | int near_y_int = (int)nearest_pt[1]; |
| | | int near_y_frac = (int)(fabsf(nearest_pt[1] - near_y_int) * 100); |
| | | int dn_int = (int)dist_to_nearest; |
| | | int dn_frac = (int)((dist_to_nearest - dn_int) * 100); |
| | | |
| | | if (index_changed == HIDO_TRUE) |
| | | { |
| | | HIDO_Debug2("[MC_PATH]CHG pos=(%d.%02d,%d.%02d) near=%u->%u look=%u->%u dn=%d.%02d reach=%d\r\n", |
| | | pos_x_int, pos_x_frac, pos_y_int, pos_y_frac, |
| | | s_last_nearest, nearest_idx, |
| | | s_last_lookahead, lookahead_idx, |
| | | dn_int, dn_frac, reached); |
| | | } |
| | | else |
| | | { |
| | | HIDO_Debug2("[MC_PATH] near=%u(%d.%02d,%d.%02d) look=%u dn=%d.%02d reach=%d\r\n", |
| | | nearest_idx, near_x_int, near_x_frac, near_y_int, near_y_frac, |
| | | lookahead_idx, |
| | | dn_int, dn_frac, reached); |
| | | } |
| | | |
| | | s_last_nearest = nearest_idx; |
| | | s_last_lookahead = lookahead_idx; |
| | | } |
| | | |
| | | float target[2]; |
| | | mc_get_point(state, lookahead_idx, target); |
| | |
| | | |
| | | float vec_x = target[0] - state->pos[0]; |
| | | float vec_y = target[1] - state->pos[1]; |
| | | float desired_heading = arm_atan2_f32(vec_y, vec_x); |
| | | float heading_err = mc_wrap_angle(desired_heading - state->heading_rad); |
| | | float desired_heading; |
| | | arm_atan2_f32(vec_y, vec_x, &desired_heading); |
| | | out->target_heading_deg = mc_math_rad_to_compass_deg(desired_heading); |
| | | float heading_err = mc_heading_error_with_hysteresis(state, desired_heading); |
| | | float heading_err_rate = (heading_err - state->last_heading_err) / (dt_s > 0.0f ? dt_s : 0.013f); |
| | | state->last_heading_err = heading_err; |
| | | |
| | |
| | | + state->config.heading_kd * heading_err_rate |
| | | + state->config.xtrack_kp * cross_track; |
| | | yaw_rate_cmd = MC_CLAMP(yaw_rate_cmd, -state->config.max_turn_rate, state->config.max_turn_rate); |
| | | |
| | | |
| | | float forward = state->config.base_speed_mps |
| | | - state->config.heading_speed_scale * fabsf(heading_err) |
| | | - state->config.xtrack_speed_scale * fabsf(cross_track); |
| | |
| | | _state->pos[0] = _enu[0]; |
| | | _state->pos[1] = _enu[1]; |
| | | _state->pos[2] = _enu[2]; |
| | | _state->heading_rad = mc_wrap_angle((_gprmi->m_fHeadingAngle) * DEG2RAD); |
| | | _state->heading_deg = _gprmi->m_fHeadingAngle; |
| | | float old_heading_deg = _state->heading_deg; |
| | | float gps_heading_rad = mc_compass_deg_to_math_rad(_gprmi->m_fHeadingAngle); |
| | | _state->heading_rad = gps_heading_rad; |
| | | _state->heading_deg = mc_math_rad_to_compass_deg(_state->heading_rad); |
| | | |
| | | float old_heading_rad = mc_compass_deg_to_math_rad(old_heading_deg); |
| | | _state->pitch_deg = _gprmi->m_fPitchAngle; |
| | | _state->roll_deg = _gprmi->m_fRollAngle; |
| | | _state->vel[0] = _gprmi->m_fEastVelocity; |
| | |
| | | return; |
| | | } |
| | | |
| | | _state->yaw_rate_rad = _gpimu->m_fGyroZ * DEG2RAD; |
| | | /* GyroZ符号定义:顺时针正,逆时针负(从上往下看Z轴,右手螺旋定则) |
| | | * 数学坐标系:东为0°,逆时针为正(CCW>0) |
| | | * 所以:GyroZ正值(顺时针)→ yaw_rate_rad负值,GyroZ负值(逆时针)→ yaw_rate_rad正值 |
| | | * 需要取反:yaw_rate_rad = -GyroZ * DEG2RAD */ |
| | | _state->yaw_rate_rad = -(_gpimu->m_fGyroZ * DEG2RAD); |
| | | _state->imu_valid = HIDO_TRUE; |
| | | |
| | | } |
| | | |
| | | /* 入口:根据阶段计算控制量 */ |
| | | /* 入口:根据阶段计算控制量 */ |
| | | HIDO_VOID MC_Compute(MC_State *_state, float _dt_s, MC_Output *_out) |
| | | { |
| | | if (_state == HIDO_NULL || _out == HIDO_NULL) |
| | |
| | | return; |
| | | } |
| | | |
| | | if (_state->imu_valid == HIDO_TRUE && _dt_s > 0.0f) |
| | | { |
| | | float old_heading_rad = _state->heading_rad; |
| | | float old_heading_deg = _state->heading_deg; |
| | | float delta_rad = _state->yaw_rate_rad * _dt_s; |
| | | _state->heading_rad = mc_wrap_angle(_state->heading_rad + delta_rad); |
| | | float new_heading_rad = _state->heading_rad; |
| | | _state->heading_deg = mc_math_rad_to_compass_deg(_state->heading_rad); |
| | | |
| | | (void)new_heading_rad; |
| | | } |
| | | |
| | | if (_state->stage == MC_STAGE_IDLE) |
| | | { |
| | | _state->stage = MC_STAGE_GOTO_START; |
| | | } |
| | | |
| | | _out->target_heading_deg = _state->heading_deg; |
| | | |
| | | switch (_state->stage) |
| | | { |
| | | case MC_STAGE_GOTO_START: |
| | |
| | | break; |
| | | case MC_STAGE_FINISHED: |
| | | _out->active = HIDO_FALSE; |
| | | _out->target_heading_deg = _state->heading_deg; |
| | | break; |
| | | default: |
| | | break; |
| | | } |
| | | |
| | | _out->turn_rate = -_out->turn_rate; |
| | | _out->stage = _state->stage; |
| | | _out->pos_enu[0] = _state->pos[0]; |
| | | _out->pos_enu[1] = _state->pos[1]; |