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提出了一种利用表面刻有周期性规则图案的陀螺转子进行非接触式角度测量的方法,这种方法利用光电传感器读取陀螺转子表面的图案信息,从而实时测量陀螺转子的偏转角。介绍了这种测角方法的原理和测角装置的结构,并建立三维几何模型,详细推导了测角方法的角度解算算法,得到了陀螺转子在无偏转、一维偏转及二维偏转三种情况下的偏转角与光电传感器测得的陀螺转子表面图案信息之间的关系曲线或曲面。计算结果表明,两个正交方向的光电传感器共同探测,即可得到陀螺转子的偏转角及偏转方向,其结果唯一,且测角范围大于30°。该测角方法可用于静态测量和高速动态测量。
A method of non-contact angle measurement using a gyroscopic rotor engraved with a periodic regular pattern is proposed. The method uses a photoelectric sensor to read the pattern information of the gyroscopic rotor surface to measure the deflection angle of the gyroscopic rotor in real time. The principle of the goniometry method and the structure of the goniometer are introduced. The three-dimensional geometric model is established and the angle calculation algorithm of the goniometry method is deduced in detail. The gyroscope is obtained in non-deflection, one-dimensional deflection and two-dimensional deflection three The relationship between the deflection angle and the gyro rotor surface pattern information measured by the photoelectric sensor is curve or surface. The calculation results show that the two orthogonal photoelectric sensors detect the gyroscope’s deflection angle and deflection direction, and the result is unique, and the angle measurement range is greater than 30 °. The goniometry method can be used for static measurement and high-speed dynamic measurement.