What is the Vehicle Coordinate System?
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Vehicle coordinate system is a special dynamic coordinate system used to describe the motion of a vehicle. Extended information about the vehicle coordinate system is as follows: 1. Measurement method: Its origin coincides with the center of mass. When the vehicle is stationary on a horizontal road surface, the X-axis is parallel to the ground and points to the front of the vehicle, the Z-axis passes through the vehicle's center of mass and points upward, and the Y-axis points to the left side of the driver. 2. Specific explanation: Chinese name: Vehicle coordinate system. Characteristics: Its origin coincides with the center of mass. Currently, there are several commonly used definitions of vehicle body coordinate systems in academia and industry. These include the ISO international standard definition, the SAE (Society of Automotive Engineers) definition, and the coordinate definition based on the Inertial Measurement Unit (IMU). In vehicle dynamics analysis, the ISO-defined vehicle body coordinate system is more common. The SAE-defined vehicle body coordinate system is consistent with the body coordinate system commonly used in the aerospace field. The IMU-based vehicle body coordinate system is more common in applications related to IMUs. Regardless of which coordinate system definition is used, as long as it is used correctly, it can describe the position of the vehicle body and determine the relative positional relationship between surrounding objects and the vehicle.