本文详细解析了ROS（Robot Operating System）中两种关键消息格式：用于描述机器人关节状态的`qbo_joint_odom`消息和用于提供电机状态信息的`qbo_arduqbo/motor_state`消息。通过分析这些消息的结构和内容，读者可以更好地理解ROS系统中传感器数据和电机控制的通信方式。
ppeix:qbo_joint_odom$ rosmsg show sensor_msgs/JointState
std_msgs/Header header
uint32 seq
time stamp
string frame_id
string[] name
float64[] position
float64[] velocity
float64[] effort
ppeix:qbo_joint_odom$ rosmsg show qbo_arduqbo/motor_state
std_msgs/Header header
uint32 seq
time stamp
string frame_id
int32 id
int32 goal
int32 position
int32 error
int32 speed
float64 load
float64 voltage
int32 temperature
bool moving
std_msgs/Header header
uint32 seq
time stamp
string frame_id
string[] name
float64[] position
float64[] velocity
float64[] effort
ppeix:qbo_joint_odom$ rosmsg show qbo_arduqbo/motor_state
std_msgs/Header header
uint32 seq
time stamp
string frame_id
int32 id
int32 goal
int32 position
int32 error
int32 speed
float64 load
float64 voltage
int32 temperature
bool moving
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