SU830118A1 - Linear inductosyn - Google Patents

Description

(54) LINEAR INDUCTIVE

one

This invention relates to automatic motion control systems, namely linear inductosines.

A linear inductosin is known, which contains a fixed ruler and a movable slider located one above the other with a gap, on the mating surfaces of which there are respectively single phase and two phase windings. In this case, the slider winding is intended to be sectioned with alternating phases. Such a design allows to improve the sinusoidal curve of mutual induction due to the compensation of currents of the frontal winding parts. In the case of a perfectly accurate positioning of the windings, the error from the currents in the frontal parts is zero 1.

The ideal sine curve of the mutual induction curve is not obtained in this case, since such a winding is not symmetrical due to the fact that the end sections belong to different phases and therefore the mutual induction curve will have a shape distortion, and the output signal from the induction line ruler becomes an error due to shape distortion mutual induction curve.

The closest technical solution to this device is linear inductosin, which contains a fixed ruler and a slider located one above the other with a gap, on the adjoining surfaces of which the single-phase and two-phase windings are located, respectively. The slider winding is designed in such a way that the outer sections belong to the same phase, but the phase rotation across the sections is broken. The two central sections belong to the same phase. Such a design of the winding of the linear inductosin slider is symmetrical and provides for the quadrature of the phases, which increases the accuracy of the device. In addition, magnetic symmetry field 2 is improved.

However, uniform (along the working axis

Claims (2)

slider) magnetic symmetry field such a winding design of the slider does not provide due to the predominance of the influence of the extreme winding sections of the first phase over adjacent sections of the second phase, and in the center of the winding the second phase prevails over the first, forming a neutral zone along the symmetry axis of the winding. As a result, there is a distortion of the output waveform and, in addition, a significant drop in its magnitude. Consequently, in addition to the error due to distortion of the output signal form, inductosin acquires an additional error due to an increase in the noise / useful signal ratio. The purpose of the invention is to improve the accuracy of linear inductosin. The goal is achieved due to the fact that in a linear inductosine containing a ruler on which a flat single-phase winding is located and a slider on which a two-phase flat symmetrical winding is located, is made of identical sections, the winding of the slider is provided with two additional sections located on both side of the main sections of the winding, and the number of turns in each additional section is two times less than the number of turns of each of the main sections. FIG. 1 shows the linear construction and I go; and FIG. 2 is a diagram of the connection section of the slider phases. The linear inductosin contains a slider with a two-phase flat symmetric winding i and a ruler with a flat single-phase winding 2. The extreme sections 3 of the slider windings are shortened, i.e. the number of turns in them is two times less than the number of turns in the central sections of the winding 1 slider. Linear inductosin works as follows. A two-phase field voltage is applied to the two-phase winding 1 of the slider. In the gap between the winding 1 of the slider and the winding 2 of the ruler, a magnetic field is formed, which induces in the winding 2 of the line EMF of induction. The form of this EMF is close to sinusoidal. The almost ideal form of the output EMF can be obtained if the winding of the slider 1 is made symmetrical and the magnetic field in the gap is single face in all coordinates. In addition, the corresponding relationship between the width of the conductor and the gap between the conductors is maintained. From the output of the ruler winding, a signal is removed, the phase or amplitude of which is proportional to the linear movement of the slider relative to the ruler. Due to the fact that in the proposed construction, the winding 1 of the runner is symmetrical, and each of the extreme sections 3 (belonging to one phase) has the number of conductors two times less than in any of the other sections and the periodicity of sections belonging to different phases is observed. the output will be an almost perfect sine wave. The presence in the winding of 1 slider of an odd number of sections and reducing the number of conductors in each of the extreme sections 3 by half compared with the number of conductors in any of the other sectors allows to obtain a symmetrical winding with alternating phases across the winding sections, which will allow you to get almost perfect shape output emf and, ultimately, improve the accuracy of inductosin. The economic effect from the use of the proposed technical1) solution is related to its technical advantages. Claims of the invention Linear inductosin containing a ruler on which a flat single-phase winding is located and a slider on which a two-phase flat symmetric winding is located, made of the same sections, characterized in that, in order to improve the accuracy of the inductosin, the runner winding is equipped with two additional sections located on both sides of the main sections of the winding, and the number of turns in each additional section in d7a7a ° for mTnTshGchislGvtkoy of each of the main sections Information sources taken in Niemann for the examination of US 1.Patent number 2799835, cl. 336-123, published. 1957. 2. US patent number 2915722, cl. 336-115, published. 1959 (prototype). - - s