CAJ | 학술논문

针对三维空间手势输入的特点，提出了一种基于双路三轴MEMS加速度计的对称配置方案及角速度、线加速度解算方法。该方法使用两个三轴MEMS加速度计以及对称的硬件布局构成无陀螺微惯性测量单元，基于积分法计算测量单元的角速度和质心处线加速度，利用角速度解析式中的冗余信息对解算积累误差进行估计并实施误差补偿。该方案避免使用陀螺组件，两路加速度计在长轴方向上的对称编排方式保证了测量单元的小体积、狭长几何特征，便于手持；相应的角速度解算方法形式简单，适用于采样时长短、测量单元横滚角变化量小的三维空间手势特征提取和识别领域。仿真实验证明了该方案的可行性和有效性。
침대삼유공간수세수입적특점，제출료일충기우쌍로삼축MEMS가속도계적대칭배치방안급각속도、선가속도해산방법。해방법사용량개삼축MEMS가속도계이급대칭적경건포국구성무타라미관성측량단원，기우적분법계산측량단원적각속도화질심처선가속도，이용각속도해석식중적용여신식대해산적루오차진행고계병실시오차보상。해방안피면사용타라조건，량로가속도계재장축방향상적대칭편배방식보증료측량단원적소체적、협장궤하특정，편우수지；상응적각속도해산방법형식간단，괄용우채양시장단、측량단원횡곤각변화량소적삼유공간수세특정제취화식별영역。방진실험증명료해방안적가행성화유효성。
Considering the peculiarities of the gesture-based interfaces,a symmetrical configuration scheme of dual MEMS accelerometers is presented,and the relative algorithm for calculating angular velocity and linear acceleration is described. The gyro-free micro inertial measurement unit is constructed from two triaxial MEMS accelerometers with the symmetrical layout,its angular velocity and linear acceleration of the center is obtained by integral method. Meanwhile,the redundant formula held by this method is used for estimating and compensating the iterative error. By employing the symmetrical structure on the major axis,the unit is small and narrow,it is convenient for holding. The relative algorithm with low overheads is applicable to the situation of measuring spatial gesture characteristics, as the sampling time is short and roll angle varies slightly. The simulation results show the feasibility of the scheme and the efficiency of the algorithm.