基于MEMS传感器的起重机吊钩运动实时监控系统

针对起重机吊钩运动状态的实时监控问题,设计并实现了一种基于MEMS传感器的吊钩运动监控系统。利用微型加速度计和磁强计实时测量了吊钩的二维倾角和水平方位角;分析了多种不同的磁强计补偿方法,针对强磁环境下水平方位角误差较大的特点,提出了一种基于T-S模糊逻辑的吊钩旋转角误差补偿方法;研制了系统样机,并进行了性能测试。研究结果表明,起重机吊钩倾角测量精度达到0.3°,平面旋转角精度达到0.8°,可满足实际应用要求,具有良好的应用前景。

Lifting hook motion state monitor system based on MEMS sensors

Aiming at the practical application of low-lost lifting hook movement,a lifting hook motion state monitor system based on MEMS sensors was presented.Two dimensional dip angle and azimuth angle of the hook can be measured with the micro accelerometer and magnetometer in real time.Different magnetometer compensation methods were analyzed.Because of the big error of the azimuth angle in strong magnetic environment,an error compensation method using T-S fuzzy logic was proposed.Model machine was manufactured and the performance was tested.The results indicate that the measurement precision of dip angle can reach ± 0.2° and azimuth angle can reach ±0.8°.The application requirements is satisfied and the foreground is great.