SU1004888A2 - Accelerometer - Google Patents

Description

The invention relates to electric micromachines, namely, angular acceleration sensors accelerometers), designed to measure the angular accelerations of monitored shafts in automation and computing devices.

According to the main author. St. 283710 there is a known accelerometer {.IJ containing an external stator with excitation poles from, permanent magnets and papus with measuring windings, an internal stator and a hollow electrically conductive rotor rotated by a controlled shaft.

When a rotor with a variable angular velocity is rotated in a magnetic field created by magnets, a temporal magnetic flux of the transverse reaction of the rotor is induced along the measuring winding axis, which induces an emf in the measuring winding

rhenium

at

Zsh city

- iftT

its

where EB, is the emf at the output of the accelerometer;

С - proportionality coefficient i

IM is the angular velocity of rotation of the 5rotor.

The disadvantages of the known accelerometer are the low steepness of the output characteristic, the low power of the output signal, and the time shift 0 between the input and output values of the pulsed acceleration and the EMF of the measuring winding.

The low steepness of the output characteristic and low power of the output signal are due to the insignificant magnitudes of the magnetic flux of the transverse response of the rotor at relatively low angular accelerations in instrumentation devices. The time shift between the input and output S. The delay is determined by the value of the inductance of the magnetization of the hollow rotor, creating a transverse magnetic flux.

25

These drawbacks of the known accelerometer limit its use in automation and computing devices characterized by low angular accelerations by 30 rotating shafts.

Claims (1)

An accelerometer featuring a boost target St. No. and I with that, speed, 283710, that, d a compensation winding is inserted into it, located coaxially and connected in-line to the measuring-winding, and an amplifier whose input is connected to the measuring winding and the output to the compensation winding.