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CIRCUIT FOR DETECTING ROTATION ANGLE, METHOD FOR DETECTING ROTATION ANGLE, SAMPLE ANALYSIS DEVICE, AND COMPUTER PROGRAM FOR SAMPLE ANALYSIS DEVICE
CIRCUIT FOR DETECTING ROTATION ANGLE, METHOD FOR DETECTING ROTATION ANGLE, SAMPLE ANALYSIS DEVICE, AND COMPUTER PROGRAM FOR SAMPLE ANALYSIS DEVICE
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机译:用于检测旋转角的电路,用于检测旋转角的方法,样品分析装置以及用于样品分析装置的计算机程序
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摘要
A brushless motor includes: a 2n-pole (n: natural number) rotor; and a first Hall element and a second Hall element arranged at a positional relationship of an angle α (0°α180°) from each other with respect to a rotation axis of the rotor. The first Hall element and the second Hall element each output a voltage signal in accordance with a magnitude of a magnetic field of the rotor. A rotational angle detection circuit for detecting a rotational angle of the brushless motor includes: a phase detection circuit that receives the voltage signals from the first Hall element and the second Hall element and that detects a phase of the rotor by using values of the voltage signals and information of the angle α; and an angle calculation circuit that calculates a rotational angle of the rotor calculated from an initial angle based on the phase and a predetermined reference angle.
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