Four-hole site coil integral force transducer based on principle of piezomagnetic effect

A force sensor and piezomagnetic effect technology, which is applied in the direction of measuring the change force of the magnetic properties of the material caused by the applied stress, can solve the problems of non-returning to zero, small magnetic permeability, poor repeatability, etc., and achieve Effects of reducing excitation power, improving stability, and compensating for irregular drift
CN102519632BActive Publication Date: 2013-10-23BEIJING ARITIME INTELLIGENT CONTROL
8 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
BEIJING ARITIME INTELLIGENT CONTROL
Publication Date
2013-10-23

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses a novel four-hole site coil integral force transducer based on the principle of piezomagnetic effect. The force transducer comprises a transducer piezomagnetic body, a horizontal hole site, a horizontal coil W1.2, a vertical hole site, a vertical coil W3.4, a differential rectification output circuit, an excitation transformer and a low-frequency excitation power supply. In the invention, a horizontal hole site measurement coil and a vertical hole site compensation coil in a measurement area are completely separated; based on the inherent characteristic of the magnetic body material that the longitudinal magnetic conductivity parallel to an external force F is very sensitive to stress while the transverse magnetic conductivity vertical to the external force F is not sensitive to the stress, the measurement circuit is designed as an inductive four-wall balanced bridge according to the electric principle; and the bridge output is in a current rectification and resistance voltage reduction mode so as to realize an integral optimization measurement circuit with three-wire excitation, differential compensation and DC (direct current) output.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention belongs to the technical field of force value measurement of mechanical, electronic, electromagnetic and mechanical integrated sensors, to be precise, it relates to an integral force measuring sensor with a four-hole coil applying the principle of piezomagnetic effect. Background technique

[0002] The principle of piezomagnetic effect has been used for more than half a century since it was applied in the 1960s. The piezomagnetic load cell represented by the Swedish ABB company is the most widely used, and its technical performance indicators have not been surpassed so far.

[0003] The material of the ABB force sensor is a soft magnetic alloy stainless steel silicon steel sheet, and the structure is lamination bonding or winding bonding. The coil hole position in the measurement area is a four-hole symmetrical structure, and the two windings are orthogonal winding. The principle Orthogonal coupling (biased coupling, magnetic crooked coup...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More