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Torque measurement sensor based on phase difference of photoelectric encoder signals and measuring method

A photoelectric sensor and photoelectric encoder technology, applied in the field of sensors, can solve problems such as affecting measurement accuracy, and achieve the effects of simple measurement principle, low cost, and strong anti-interference ability.

Inactive Publication Date: 2014-12-10
XIAN UNIV OF TECH
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Problems solved by technology

[0008] The purpose of the present invention is to provide a torque measurement sensor based on the phase difference of the photoelectric code disc signal, which solves the problem that the existing torque sensor is easily affected by the interference of magnetic field and electric field to the measurement accuracy

Method used

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  • Torque measurement sensor based on phase difference of photoelectric encoder signals and measuring method
  • Torque measurement sensor based on phase difference of photoelectric encoder signals and measuring method
  • Torque measurement sensor based on phase difference of photoelectric encoder signals and measuring method

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Embodiment Construction

[0049] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0050] The present invention is based on the torque measurement sensor of photoelectric encoder signal phase difference, such as figure 1 and figure 2 As shown, it includes a housing 1, and an elastic transmission sleeve 4 is installed in the housing 1 through a ball bearing 3. The ball bearing 3 is fixed on the housing 1 through the bearing end caps 2 at both ends, and the two ends of the elastic transmission sleeve 4 are provided with connection The hole 9 and the keyway 11, the connecting hole 9 and the keyway 11 are respectively connected with the input and output shafts of the transmission system, the elastic link 8 is in the middle of the elastic transmission sleeve 4, and a photoelectric code disc 10 is set at both ends of the elastic link 8, and a photoelectric code disc 10 The tooth 12 and the tooth groove 13 each account for half ...

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Abstract

The invention discloses a torque measurement sensor based on the phase difference of photoelectric encoder signals. The torque measurement sensor comprises a shell; an elastic drive sleeve is mounted in the shell by use of a ball bearing; an elastic link is arranged in the middle part of the elastic drive sleeve; a photoelectric encoder sleeves each of the two ends of the elastic link, and the central angles of the two photoelectric encoders are equal; a mounting base is fixed on the top of the shell; a photoelectric sensor A and a photoelectric second B are fixed in the mounting base, and arranged in opposition to the two photoelectric encoders. The two photoelectric encoders are arranged at the two ends of the elastic link of the elastic drive sleeve and the two photoelectric sensors are used for obtaining square wave output signals when the encoders rotate, and then the measurement of the torsional deformation and torque of the elastic drive sleeve can be realized according to the phase difference of the square wave signals output by the two encoders. The torque measurement sensor based on the phase difference of the photoelectric encoder signals is used for solving the problem that the measurement accuracy of an existing torque sensor is prone to be effected by a magnetic field and an electric field; the torque measurement sensor is simple in measurement principle, high in anti-jamming capability, and capable of realizing high-dynamic and high-accuracy torque measurement of a drive mechanism.

Description

technical field [0001] The invention belongs to the technical field of sensors, and relates to a torque measuring sensor based on the phase difference of a photoelectric code disc signal, and also relates to a measuring method of the torque measuring sensor. Background technique [0002] Torque is an important mechanical quantity in the operation process of mechanical transmission system and equipment. At present, in the technical field of torque measurement sensor for mechanical transmission system, the methods for realizing torque measurement can be roughly divided into the following types. [0003] (1) Magnetoelastic torque sensor: This sensor is made by using the piezomagnetic effect of ferromagnetic materials. The principle is to spray a layer of magnetoelastic material on the surface of the rotating shaft. Due to the piezoelectric effect, the elastic material induces a corresponding change in the surface magnetic field, and an induced electric potential proportional to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L3/12
Inventor 郑建明彭超石姣姣李昱宋艳超杨明顺
Owner XIAN UNIV OF TECH
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