Global positioning system data acquisition-based method for computing slip angle of automobile body

Abstract

The invention relates to a global positioning system data acquisition-based method for computing the slip angle of an automobile body, belonging to the technical field of an automobile test data acquisition and kinetic parameter measurement method. The method comprises the following steps of: firstly, setting a double-antenna global positioning system and a GPS (global positioning system) receiver data acquisition processing module on the automobile body to receive satellite signals, and intercept and process some automobile body motion state information so as to convert the geographic coordinate system to the local relative coordinate system, and compute the slip angle of the automobile body according to the position and angle information of the automobile body in the local relative coordinate system. The method provided by the invention is convenient, quick and reliable to measure, and free from error accumulation, the complexity set by the system hardware related to the computation can be reduced, and the hardware configuration cost can be saved. Furthermore, the method provided by the invention is suitable for the single-GPS or double-GPS measurement scheme which is output by the binary system, and is good in generality and compatibility.

Description

technical field [0001] The invention relates to a vehicle body side slip angle calculation method based on global positioning system data collection, and belongs to the technical field of automobile test data collection and dynamic parameter measurement methods. Background technique [0002] In the process of vehicle stability research, the measurement of vehicle instantaneous dynamic state information provides signal input for vehicle stability control, which is both the input of the control system and the object to be observed by the system. In the research process of vehicle dynamics control, the global positioning system (hereinafter referred to as GPS) can provide a variety of effective information for the vehicle in real time, including: the real-time three-dimensional position coordinates of the vehicle's measured point, the real-time speed of the vehicle's measured point and the direction of the speed vector, Information such as the heading angle of the measured poin...

AI Technical Summary

Problems solved by technology

[0005] The traditional measurement method needs to install a series of sensors such as vehicle speed sensor, angular velocity sensor, steering wheel angle sensor, longitudinal acceleration sensor, lateral acceleration sensor, and yaw angular velocity sensor on the vehicle under test, and use relatively complex algorithms to measure the side slip angle of the vehicle body. Measurement, such as the body side slip angle estimation method with patent No. 200510069336, has disadvantages such as complex calculation system, difficulty in signal processing and acquisition, increased system cost, cumbersome algorithm, and error accumulation

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