汽车防抱制动系统车速测量技术的研究  

An Investigation of Measurement Technology of Vehicle Velocity in the Anti-lock Braking System

作　　者：刘国福[1] 张玘[1] 王跃科[1] 

机构地区：[1]国防科技大学仪器系

出　　处：《电子测量与仪器学报》2005年第5期28-32,共5页Journal of Electronic Measurement and Instrumentation

摘　　要：实现基于滑移率控制的汽车防抱制动系统的前提是车速的准确测量。利用汽车轮速信号和车身加速度信号,建立了系统状态方程和测量方程,并用卡尔曼滤波技术来估计车速。为减少微控制器的计算量和增加系统可靠性,对四个轮速信号应用中值滤波方法,提出了一种实用的车速计算方法,试验结果验证了该方法的可行和有效性。The precondition of realizing slip ratio based on Anti - lock Braking System （ABS） is the accuracy measurement of vehicle velocity. By using the wheel speed signals and vehicle body acceleration signal, the system state equations and measurement equations are implemented, and the vehicle velocity is estimated by the Kalman Filter technology. In order to reduce the calculation work and increase the reliability of system, this paper applied the technology of Median Filter to the four wheel speed signals, and proposed a kind of practical method for calculating vehicle velocity. The trial results verify the feasibility and validity of this method.

关 键 词：防抱制动系统 车速 卡尔曼滤波 中值滤波 

分 类 号：U463.526[机械工程—车辆工程] U471.15[交通运输工程—载运工具运用工程]