SU610018A1 - Translational motion parameters transducer - Google Patents

Description

The invention relates to control and regulation elements and can be used to simultaneously control two dynamic motion parameters of various objects. Transducers of motion into an electrical signal are known, comprising a magnetic core, a moving part, a source of magnetomotive force (MDS), and a measuring winding JlJ. The disadvantage of these transducers is the impossibility of simultaneously measuring the first and second derivative of the displacement. Also known is a transducer containing a magnetic core, cylindrical with an inner pole, the central core of which is encompassed by a C-shaped magnetic circuit with a measuring winding, a movable core. associated with the object, and the source of MDS The disadvantage of this transducer is the impossibility of simultaneously measuring the first and second derivative of the displacement. The purpose of the invention is to measure the first and second derivatives of the movement. This is achieved by the fact that the translational motion transducer is equipped with an electrically conductive ring and an additional measuring winding located inside the cylindrical magnetic circuit, and the moving core is rigidly connected to the KCJHT controlled object. If the core hangs freely, then a third mixing derivative can be measured. The drawing shows the Converter. The converter contains MDS in the form of two magnets 1 and 2, cylindrical with longitudinal magnetization, which are connected according to the internal magnet of the soft pole 3. The magnets 1 and 2 together with the pole 3 and the bases 4 and 5 constitute a magnetic core with an internal rod 6. Under the pole 3 rod 6 is covered by a movable core 7, the width of which is equal to the width of the pole 3. Inside the magnetic core with

electrically conductive ring 8 and measuring winding 9 are placed on different sides.

The rod 6 from the outer side is covered with a shaped magnetic core 10 with a measuring winding 11.

The principle of operation of the converter is as follows.

If the core 7 is rigidly connected with the controlled object, then when the object moves with a constant speed, the overlap area between the pole 3 and the core 7 changes linearly. In accordance with this, the output of the winding 9 is emf proportional to the displacement velocity.

When the object moves with acceleration, the secondary flow from ring 8 is variable. Since this flow is coupled to the measuring winding 11, at its output the EMF is proportional to the second derivative of the object's movement.

If the core 7 is suspended freely, and the magnetic core is connected to the object under control, then at the output of the winding 9 the EMF is proportional to the second derivative of the displacement, and the EMF at the output of the winding 11 is the third derivative.

Claims (2)

1. The transducer of the parameters of the progressive motion, containing a magnetic core, cylindrical with an internal pole, the central core of which is enclosed by an O-shaped magnetic core with a measuring winding, a movable core connected with an object and a magnetomotive power source, characterized in that, in order to measure the first and second displacement derivatives, it is provided with an electrically conductive ring and an additional measuring coil located inside the cylindrical magnet ode, and the movable core is rigidly connected with the controlled object. 2. The converter according to claim 1, wherein the core is suspended freely for the purpose of measuring the third derivative. . Sources of information taken in attention. mania during examination: 1. Zaripov MF Gfeobrazovanie with ra “limiting parameters, 1969, p. 7486. 2. USSR author's certificate number 454481, cl. C 01 p 15 / O2, 197.3. ten eight 7 / / 13 ft