基于霍尔效应的机械自解耦多维传感器研制及实验研究_毕业论文.pdf

With the development of industrial society, the robotics field, precision processing industry

and medical aspects need to be equipped with a perfect detection link, sensors as an important

part of the detection link, has received wide attention and rapid development. Among them,

multidimensional force sensors have been more maturely used in various fields, but there are

also places worth changing or improving to meet the urgent needs for subsequent development,

such as wireless detection technology for multidimensional force sensors; at the same time,

Firstly, this paper first investigates and analyzes the Hall effect, and then establishes the

mathematical model of magnetic field strength and Hall voltage by combining the mathematical

relationship between magnetic field strength and distance on the axis of permanent magnets. The

simplified mathematical model is simulated and analyzed by MATLAB software to determine

the linear detection interval. The design of the multidimensional sensor is carried out according

to the Hall effect detection principle and the mechanical self decoupling principle, and the

mechanical self decoupling transfer process and working mode of axial force, bending moment

and torque are described; meanwhile, the mechanical self decoupling characteristics of the sensor

are simulated and analyzed by ANSYS finite element simulation software, and the simulation

results prove the decoupling principle of the sensor; and the structure is optimized and assembled

analyzing the specific parameters in the transmission process of axial force, bending moment and

torque, and calculating them separately to obtain the mapping relationship between the input

force and permanent magnet displacement, and combining with the formula of Hall voltage to

obtain the exact relationship between the input force information and the output variation voltage,

i.e., the mapping matrix. The matrix results verify the self-decoupling property of the

multidimensional sensor in this paper at the theoretical level.

Finally, the comprehensive loading experimental platform developed by the laboratory itself

is calibrated to ensure that it can be loaded accurately, and the sensor needs to be calibrated to

determine the detection interval, the state of real-time detection and other information; at the

coupling capability and can realize wireless real-time detection with good performance in

various characteristics.

wireless detection; speed detection

Abstract .......................................................................................................................................... II