CAJ | 학술논문

针对单一传感器在汽车电子驻车制动系统倾角测量中存在误差和噪声干扰等问题，提出了一种基于对倾角传感器与加速度计测量数据进行融合的卡尔曼滤波优化算法的MEMS倾角传感器设计。采用一个单轴微机械结构倾角传感器SCA61 T和一个加速度芯片ADXL203设计，通过卡尔曼滤波法对测到的信号进行融合并滤去干扰信号得到车身倾角的真实值；在硬件电路设计的基础上，融入卡尔曼滤波程序软件算法，在电子驻车试验样机上进行了±20°内角度的精确测量。实验结果表明，该设计方案测量误差低于0．5°，所设计的MEMS倾角传感器具有精度高、体积小和抗干扰等优点，可为电子驻车制动系统施加准确的驻车制动力提供重要参考。
침대단일전감기재기차전자주차제동계통경각측량중존재오차화조성간우등문제，제출료일충기우대경각전감기여가속도계측량수거진행융합적잡이만려파우화산법적MEMS경각전감기설계。채용일개단축미궤계결구경각전감기SCA61 T화일개가속도심편ADXL203설계，통과잡이만려파법대측도적신호진행융합병려거간우신호득도차신경각적진실치；재경건전로설계적기출상，융입잡이만려파정서연건산법，재전자주차시험양궤상진행료±20°내각도적정학측량。실험결과표명，해설계방안측량오차저우0．5°，소설계적MEMS경각전감기구유정도고、체적소화항간우등우점，가위전자주차제동계통시가준학적주차제동력제공중요삼고。
There are errors and noise interferences aroused by single sensor in the angle measurement for automotive electron -ic parking brake system ( EPB) .A design on automotive MEMS sensor based on the optimization algorithm was proposed for in-clinometer with the fusion of tilt sensor and accelerometer measurement data through Kalman filtering .The true value of the tilt was obtained using a single -axis tilt sensor SCA61T and an acceleration chip ADXL203 when the measured signal was fused and interference signals were filter out .On the basis of the hardware circuit design , Kalman filter method was integrated into the soft-ware algorithm;experiments for accurate measurement of angle within ±20°were practiced on the electronic parking experimen-tal prototype.Experimental results show that:the measurement error in the design is less than 0.5 °; the designed MEMS tilt sensor is of high accuracy , small size and anti -interference; it can provide accurate angle measurement for electronic parking brake system.