Detection And Estimation For The Stability Parameters Of Vehicle

As people's living standards are improving, security awareness has been enhanced a lot more, with the requirement of vehicle-driving safety, Automotive Safety Technology has become a research hotspot. Automotive safety system is divided into active safety systems and passive safety systems, The passive safety systems such as conventional seat belts, airbags, bumpers and other devices have not effectively prevented and solved the traffic accidents, so how to prevent and reduce accidents, reduce driver's driving risk, is becoming an urgent problem of a vehicle active safety systems. Meanwhile, the maturity of modern automotive electronics technology for automotive active safety systems provides a broad platform, and gives it a higher objectives and requirements.How to fast and accurately to capture of the important parameters of the process of moving vehicle electronic control system is a prerequisite. The purpose of this design is to provide accurate, real-time data base for vehicle stability system, the the design consists of two parts: collection and estimation. Acquisition system designed for the lateral acceleration and yaw rate for the collection, the method was used to estimate the body sideslip angle which can not be directly measured.To provide basic motion parameters for Vehicle Stability Control System, this design uses a ARM7LPC2200 the core controller, a MEMS inertial measurement module ADIS16355 for sensing the vehicle six degrees of freedom motion parameters. The system construction of data acquisition system is introduced, and the working principle, structure characteristic of the LPC2200 and ADIS16355 sensor are expounded. A method for SPI Interface of the vehicle motion parameters acquisition system is presented, and the experiment for measuring the vehicle lateral acceleration and yaw rate is performed. The experimental data shows that the acquisition system is stable, with reliable data, and has reached measurement of the vehicle motion parameters, and the body sideslip angle is estimated by EKF.The research provide a necessary foundation to the further system in subsequent development...