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ASER/App/nav/corridor_ctrl.c

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#include "corridor_ctrl.h"
#include <math.h>
#include <stdbool.h>
/* ====================== 内部状态 ====================== */
static CorridorCtrlConfig_t s_cfg;
static bool s_initialized = false;
/* 辅助:浮点数限幅 */
static inline float clampf(float val, float lo, float hi)
{
if (val < lo) return lo;
if (val > hi) return hi;
return val;
}
void CorridorCtrl_Init(const CorridorCtrlConfig_t *config)
{
s_cfg = *config;
s_initialized = true;
}
void CorridorCtrl_Compute(const CorridorState_t *state,
const CorridorObs_t *obs,
float imu_wz,
RawCmd_t *out_cmd)
{
if (!s_initialized) {
out_cmd->v = 0.0f;
out_cmd->w = 0.0f;
out_cmd->flags = 0U;
return;
}
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/* ========================================================
* : 使
*
* ======================================================== */
bool near_exit = false;
if ((obs->valid_mask & (1U << 4)) != 0U) { /* 前激光有效 (bit 4) */
if (obs->d_front <= s_cfg.exit_front_dist) {
near_exit = true;
}
}
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/* ========================================================
* :
* w_cmd = kp_theta * e_th + kd_theta * (-imu_wz) + kp_y * e_y
*
* - kp_theta * e_th :
* - kd_theta * (-imu_wz) : "阻止车头继续转"
* IMU e_th
* - kp_y * e_y :
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*
* : 使使
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* ======================================================== */
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float w_cmd;
bool escape_active = false;
if (near_exit) {
/* 接近出口: 仅保持航向惯性,禁用左右激光控制 */
w_cmd = -(s_cfg.kd_theta * imu_wz);
} else {
/* 正常控制: 完整PD控制律 */
w_cmd = -(s_cfg.kp_theta * state->e_th
+ s_cfg.kd_theta * imu_wz
+ s_cfg.kp_y * state->e_y);
/* ========================================================
* :
*
* EKF
* ======================================================== */
{
bool left_front_ok = ((obs->valid_mask & (1U << 0)) != 0U);
bool left_rear_ok = ((obs->valid_mask & (1U << 1)) != 0U);
bool right_front_ok = ((obs->valid_mask & (1U << 2)) != 0U);
bool right_rear_ok = ((obs->valid_mask & (1U << 3)) != 0U);
float w_escape = 0.0f;
float left_min = 10.0f;
float right_min = 10.0f;
if (left_front_ok && obs->d_lf < left_min) left_min = obs->d_lf;
if (left_rear_ok && obs->d_lr < left_min) left_min = obs->d_lr;
if (right_front_ok && obs->d_rf < right_min) right_min = obs->d_rf;
if (right_rear_ok && obs->d_rr < right_min) right_min = obs->d_rr;
if (left_min < s_cfg.wall_escape_dist) {
float err = s_cfg.wall_escape_dist - left_min;
w_escape -= s_cfg.wall_escape_kp * err; /* 左侧很近 -> 轻微右转 */
escape_active = true;
}
if (right_min < s_cfg.wall_escape_dist) {
float err = s_cfg.wall_escape_dist - right_min;
w_escape += s_cfg.wall_escape_kp * err; /* 右侧很近 -> 轻微左转 */
escape_active = true;
}
w_escape = clampf(w_escape, -s_cfg.wall_escape_w_max, s_cfg.wall_escape_w_max);
w_cmd += w_escape;
}
}
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/* 角速度限幅:防止 PD 溢出导致原地打转 */
w_cmd = clampf(w_cmd, -s_cfg.w_max, s_cfg.w_max);
/* ========================================================
* 线:
* v_cruise
*
* : v = v_cruise * (1 - k * |w/w_max|)
* k 0.3~0.5
* ======================================================== */
float speed_reduction = s_cfg.speed_reduction_k * fabsf(w_cmd) / s_cfg.w_max;
float v_cmd = s_cfg.v_cruise * (1.0f - speed_reduction);
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/* 近墙脱离时轻微降速,避免“贴着墙还继续冲” */
if (escape_active) {
v_cmd *= 0.80f;
}
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/* 线速度限幅:不允许倒车,不允许超速 */
v_cmd = clampf(v_cmd, 0.0f, s_cfg.v_max);
/* ========================================================
* :
* conf
* 线
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*
*
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* ======================================================== */
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if (state->conf < 0.2f) {
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/* 健康度极低:速度打三折,保持航向惯性滑行 */
v_cmd *= 0.3f;
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} else if (state->conf < 0.4f) {
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/* 健康度较低(单侧退化):速度打七折 */
v_cmd *= 0.7f;
}
/* 输出赋值 */
out_cmd->t_ms = state->t_ms;
out_cmd->v = v_cmd;
out_cmd->w = w_cmd;
out_cmd->flags = 0U;
}