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The commercial vehicle industry is undergoing revolutionary changes driven by autonomous driving technology. Due to its characteristics of a single working environment, fixed routes, high driver workload, and high commercial value, commercial vehicle autonomous driving is predicted to be the first to achieve commercialization. Autonomous driving positioning requires vehicles to estimate their own parking posture with sufficient accuracy, which means measuring position at the centimeter level.
In the field of commercial vehicle autonomous driving, the performance of IMU is directly related to the accuracy of vehicle navigation and the stability of the system. If the resolution of IMU is insufficient, it will not be able to capture the small motion changes of the vehicle, resulting in excessive accumulation of navigation errors and affecting the positioning accuracy of the vehicle. However, IMU with poor stability is prone to fluctuations in its measurement results in the face of external interference such as temperature change and vibration, which will not only affect the driving safety of the vehicle, but also may lead to frequent exits of the auto drive system, seriously affecting the driver's use experience.
EPSON's inertial measurement unit M-G366PDG0 provides an ideal solution for commercial vehicle autonomous driving due to its high resolution and stability. The six degree of freedom design of the IMU enables it to comprehensively capture the vehicle's attitude and motion information. The three-axis gyroscope meets the tactical level gyroscope standard, with a range of ± 450 °/s, zero bias stability as low as 1.2 °/h, and angular random walk of only 0.08 °/√ h, which means it can maintain extremely high measurement stability even during long-term operation. The maximum range satisfied by the three-axis accelerometer can reach ± 16G, with a nominal bandwidth of 333Hz, which can fully meet the positioning requirements of vehicle autonomous driving and maintain high-precision measurements in various complex environments.
The inertial measurement unit also supports SPI and UART interfaces, making it easy to integrate with other systems of the vehicle and achieve efficient data communication; It is also equipped with a self check function, which can check whether the output of the gyroscope and accelerometer is working properly within the predetermined range. This not only enhances the reliability of the system, but also makes maintenance simpler.