汽车纵向加速度滤波算法_金辉.pdfVIP

29 1 V ol. 29 No . 1 2009 1 T ransact ions of Beijing Inst itut e of T echnolo gy an. 2009 金辉, 李磊, 陈慧岩 ( , 10008 1 ) : . . , M atlab F datool F ir , , . , . : ; ; F ir : TP 39175 : A : 1001-0645 (2 009) 01-0014-05 Filter Algorithm for Longitudinal Acceleration of Vehicles IN Hui, LI Lei, CHEN Hu-i y an ( School of M echanical and V ehicular Eng ineering , Beijing Inst itute of T echnolo gy , Beijing 100081 , China) Abstract: T o investigate the m ethod to obtain the real-tim e longitudinal acceleration based on its v elo city, v ehicle acceleration is obtained through the velocity filtering , diff erential, and then f iltering. Pow er spectrum analy sis of velocity and acceleratio n is discussed and its Fir low pass digital f ilters are designed w ith Fdato ol box in the M atlab developm ent enviro nm ent . A kind of alg orithm f itted for rea-l time use by a v ehicle is developed and its application in microcomputer is discussed. T he ex perim ental r esults rev ealed that the algorithm is of go od rea-l time and high precisio n. Key words: longitudinal acceleratio n; pow er spectrum; Fir low pass filter , . : . , 1] 2-4] , , . , , , , , , . , . , , .