CN201159648Y - Double-channel absolute zero position type circular inductosyn - Google Patents

Abstract

The utility model discloses a double-path absolute zero circular inductosyn, comprising a stator baseplate, a rotor baseplate, a copper stator winding and a copper rotor winding. The winding of the inner path of the copper stator winding is composed of 8 identical concentric circular arc winding segments, each of which is composed of connected circular arcs with different radiuses in the radial direction. The winding of the inner path of the copper rotor winding is composed of two spiral windings, the start point and the end point of each of which are symmetrical along the center at an angle of 180 degrees. The width of the conductors of the spiral windings and the clearance are respectively equal to the width and the clearance of the circular arc conductors of the winding of the inner path. Compared with similar synchronizer, the circular inductosyn has the advantages of good average effect of magnetic induction, strong capacity of resisting disturbance, high precision and simple graduation process.

Description

A kind of binary channels absolute zero position formula round induction synchrometer

Affiliated technical field

The utility model relates to a kind of round induction synchrometer, particularly a kind of binary channels absolute zero position formula round induction synchrometer.

Background technology

Round induction synchrometer is a kind of electromagnetic induction position detecting element, it has adverse environment resistant, the measuring accuracy height, the life-span is long, cost is low, easy for installation, travelling speed is fast, series of advantages such as reliable and stable, be usually used in the equipment such as turntable, gyropanel, cannon control, navigational guidance, radar antenna, transit.Traditional increment type round induction synchrometer be applied to must to rely in the slewings such as turntable one add provide absolute zero position such as sensing elements such as rotary transformer, photoelectric sensor, gratings, this can increase quality, the volume of total system, and mounting hardness.

In order to overcome the above problems, Beijing aviation precision optical machinery research institute has carried out correlative study, its staff Zhou Ziqiang has delivered the paper that is entitled as " design of a pair of polar circle inductosyn " 39 pages of " the accurate manufacturing technology of aviation " the 43rd the 3rd phases of volume, has announced a kind of design proposal of a pair of polar circle inductosyn.This scheme points out that a pair of polar circle inductosyn structure comprises stator and rotor two parts.Wherein, rotor internal channel winding is 6 row's dipolar configurations, is made up of the spiral of Archimedes of two pitch unanimities, each bar line is a utmost point, article two, the line utmost point that partners according to the position difference of signal input and output, can be designed to two kinds of symmetry and asymmetry.Stator internal channel winding is position four sections spread patterns of 90 ° each other.The radius-of-curvature of the spiral of Archimedes of stator and rotor winding should be identical, and pitch is also identical.Also can adopt the ratio in decreasing worm-pitch and different conductor and gap to reduce the influence of higher hamonic wave magnetic potential or electromotive force.In order to guarantee the consistance of winding coupled electromotive force phase place, discrete component rotor winding is opposite with the hand of spiral of stator winding during design, and promptly one is clockwise direction, and one is counter-clockwise direction.

This design proposal can be dwindled quality, the volume of conventional delta formula round induction synchrometer, but because the stator-sectional winding in this design is 4 groups, cause its antijamming capability a little less than, average effect is bad, precision is also lower.In addition, the stator winding in this scheme is a spiral of Archimedes, in manufacture process, has increased the difficulty of groove technology.

The utility model content

The purpose of this utility model provides that a kind of antijamming capability is strong, precision is high, groove technology realizes simple binary channels absolute zero position formula round induction synchrometer.

A kind of binary channels absolute zero position of the utility model formula round induction synchrometer, comprise stator substrate, rotor substrate, stator copper sheet winding and rotor copper sheet winding, the stator internal channel winding of stator copper sheet winding is made of 8 sections identical segmentation circular arc windings with together circle center, and every section winding is by being formed by connecting at the different circular arc of radius in the radial direction.As a kind of optimal way, the rotor internal channel winding of rotor copper sheet winding is made up of along the bifilar helix that central point is 180 degree symmetrical distributions Origin And Destination, and the conductor of helix is wide and the gap is wide with the circular arc conductor of stator internal channel winding and the gap equates respectively

The beneficial effects of the utility model are by stator internal channel winding being changed into every group at 8 identical set of segmentation circular arc windings of corresponding arc radius in the radial direction, non-effective electromotive force to the end can play bigger inhibiting effect, makes this synchronizer have advantages such as whole electromagnetic induction average effect is better, antijamming capability is strong, precision is high, the realization of groove technology is simple than synchronizer of the same type.

Description of drawings

Below in conjunction with the drawings and specific embodiments the utility model is described.

Fig. 1 is a synchronizer side-looking structural representation;

Fig. 2 is a rotor outer tunnel winding synoptic diagram;

Fig. 3 is a stator outer tunnel winding synoptic diagram;

Fig. 4 is a stator internal channel winding synoptic diagram;

Fig. 5 is a rotor internal channel winding synoptic diagram;

Fig. 6 is stator and rotor outer tunnel active conductor relative position figure;

Fig. 7 turns over a Machine cycle for the rotor relative stator, and stator internal channel voltage signal amplitude changes synoptic diagram;

Fig. 8 turns over a Machine cycle for the rotor relative stator, and stator outer tunnel voltage signal amplitude changes synoptic diagram;

Fig. 9 uses block scheme for the utility model

Embodiment

As shown in Figure 1, the utility model is a kind of binary channels absolute zero position formula round induction synchrometer, comprise stator substrate 1, rotor substrate 2, stator copper sheet winding 3 and rotor copper sheet winding 4 again bond respectively behind cast respectively on stator substrate 1 and the rotor substrate 2 stator insulation layer 15 and rotor insulation layer 16.On stator copper sheet winding with milling cutter depict as shown in Figure 3 stator outer tunnel winding and stator internal channel winding as shown in Figure 4; On rotor copper sheet winding with milling cutter depict as shown in Figure 2 rotor outer tunnel winding and rotor internal channel winding as shown in Figure 5.For eliminating the influence of coupling capacitance, can on rotor copper sheet winding 4, cover ground shield 6, and between rotor copper sheet winding 4 and ground shield 6, increase insulation film 17.Stator substrate 1 and rotor substrate 2 can be made by aluminium sheet, stator insulation layer 15 and rotor insulation layer 16 can be the epoxy resins insulation layer.

Rotor outer tunnel winding is formed by connecting by conductor inner end 8 and conductor outer end 9 by many active conductors 7 as shown in Figure 2, and the number of active conductor 7 is the number of poles of round induction synchrometer outer tunnel.

Stator outer tunnel winding is made sectional type as shown in Figure 3, is called the segmentation winding.It is made up of 2K conductor group, the conductor group belong to respectively A mutually with B mutually, every all have K conductor group mutually.Every group is formed by connecting by conductor inner end 11 and conductor outer end 12 by M root active conductor 10.Wherein K, M are positive integer.Belong to each group of homophase, connect with the lead differential concatenation.The stator and rotor active conductor all radially.

Stator internal channel winding is made up of 8 sections identical circular arc windings 13 with phase concentric as shown in Figure 4, is divided into A, B phase, and 4 sections circular arc windings of every phase will connect to eliminate the interference in magnetic field with the phase winding differential concatenation, draw connection terminal.For satisfying the characteristic of A, B phase output voltage signal quadrature, mechanically A, B phase winding must misplace 90 the degree, for eliminating eccentric influence and space harmonics electromotive force, the segmentation winding must be symmetrically distributed, so the hop count of stator internal channel winding can only be 2 sections, 4 sections or 8 sections simultaneously.Each section circular arc winding overhang electromotive force is non-effective electromotive force, it can cause very big influence to the synchronizer precision, can make the adjacent winding overhang current reversal of homophase by the method for differential concatenation wiring, thereby eliminate this non-effective electromotive force, when the stator internal channel segmentation number of windings many more, homophase adjacent conductor group is approaching more, just can play bigger inhibiting effect to the non-effective electromotive force of end.For this reason, the utility model is realized 8 sections circular arc windings on the stator internal channel, can obtain best effect.Each section circular arc winding of stator internal channel winding is made up of several different circular arcs of radius that come in the radial direction, and the corresponding in the radial direction arc radius of each section winding is identical.Because stator internal channel winding is several sections circular arcs that radius is identical in a circumference, and rotor internal channel winding is an each point radius helix all inequality on the line, so relative position is all different with rotor helical-screw line active conductor for the stator isocentric circular arc active conductor that radius equates everywhere, so the voltage signal amplitude that stator isocentric circular arc active conductor induces everywhere is all different, and each total induced potential of exporting mutually of stator can be regarded as the stack of the voltage signal that is induced by a lot of sections metal unit circular arcs.The stator isocentric circular arc this implementation that signal intensity is different everywhere can be so that the electric potential signal average effect that associative perception should be exported be good, thereby improves the precision of round induction synchrometer.

Rotor internal channel winding is made up of the spiral of Archimedes 16 that two pitch equate as shown in Figure 5, and the starting point a of these two helixes, b, terminal point c, d all are 180 degree angles along central point and are symmetrically distributed.A, b end is connected with lead, from c, d end input excitation voltage signal, because c, d two input ends be along central point and apart from each other, so can reduce electromagnetic interference (EMI) between two incoming lines.

The change procedure of stator active conductor 10 and rotor active conductor 7 relative positions as shown in Figure 6, the distance between wherein per two active conductor center lines is called a pole span.

Shown in Fig. 6 .1, the effective separately conductor position of stator and rotor winding overlaps, and remembers that it is an initial position, and this phase output voltage amplitude of stator has maximal value this moment; When the stator and rotor relative position was shown in Fig. 6 .2,6.3,6.4, this phase output voltage amplitude of stator was respectively 0, maximum negative value, 0; In position shown in Fig. 6 .4, rotor turns over pole span again half, and this phase output voltage amplitude of stator reaches maximal value once more.

Therefore, by above analysis as can be known, the amplitude of the induced voltage of stator output changes one-period and shows that promptly the rotor relative stator has turned over two pole spans.To number of poles is that the mechanical angle value of its each pole span correspondence of inductosyn of N is 360/N, also is that to change the mechanical angle that the one-period correspondence be 720/N to stator induction output voltage amplitude.Because the distance between stator A, B two phase windings has differed (n+1/2) individual pole span, n is an integer.Therefore the variation of the output voltage signal amplitude of two phase windings also differs 1/4 cycle all the time.

In the synchronizer course of work, excitatory to the rotor helical-screw winding, then will present the alternating magnetic field of change in polarity, and induce alternating potential at the live part of stator internal channel two phase windings along radial direction.Whenever rotor rotates a circle, this electromotive force just periodically changes once, thereby has constituted the element of a pair of utmost point.Because two phase windings are mutually perpendicular,, the output voltage signal amplitude also differs all the time 1/4 cycle so changing.It is in order to eliminate eccentric influence and space harmonics electromotive force that stator adopts the form of symmetrical segmentation winding.

According to Fig. 7 and shown in Figure 8, introduce the course of work of a kind of binary channels absolute zero position of the utility model formula round induction synchrometer.

The inside and outside passage of rotor is all applied excited signal, and A, the B of the inside and outside passage of stator this moment all can induce the voltage signal of same frequency mutually, note E _A=f _A* sin (ω), E _B=f _B* sin (ω), wherein ω is the frequency of rotor excited signal, f _A, f _BIt is the range value of A, B phase output voltage signal.f _A=E _M* sin (θ _e), f _B=E _M* cos (θ _e), θ _eBe the current electrical angle of this passage, E _MBe f _A, f _BMaximal value.According to aforementioned analysis as can be known, to the passage of a N utmost point (or N/2 is concerning utmost point), mechanically turn over one-period, stator output voltage signal amplitude will change N/2 cycle.Therefore ought mechanically turn over angle θ, on electricity with the angle θ that turns over _e=(N/2) * θ.Figure 7 shows that Machine cycle of rotor relative stator rotation, internal channel f _A, f _BChange synoptic diagram, Figure 8 shows that Machine cycle of rotor relative stator rotation, outer tunnel f _A, f _BChange synoptic diagram.

By Fig. 7,8 as can be known, when turning over 360, rotor spends outer tunnel output voltage signal amplitude f _A, f _BAll change a plurality of cycles, internal channel output voltage signal amplitude f _A, f _BOnly change one-period.

Obtaining current electrical angle is θ _eAs long as record current A, B phase output voltage E _A, E _BGet final product.

Basis again: $\frac{E_A}{E_B}=\frac{E_M\sin {\mathrm{\θ}}_e}{E_M\cos {\mathrm{\θ}}_e}=\tan {\mathrm{\θ}}_e$

Obtain: ${\mathrm{\θ}}_e=\arctan \left(\frac{E_A}{E_B}\right)$

In actual application, can obtain θ according to preceding method _{In the e}And θ _{Outside the e}, and to θ _{In the e}Get its whole number of degrees part as θ _{In the machine}Simultaneously with the θ that obtains _{Outside the e}Be converted into mechanical angle (θ according to formula _{Outside the machine}=θ _{Outside the e}/ n _Outward, n _OutwardBe the number of pole-pairs of outer tunnel, n _Outward=N/2).Utilize totalizer with θ again _{In the machine}With θ _{Outside the machine}Addition promptly obtains the mechanical angle that current rotor turns over, and these algorithms can be realized in single-chip microcomputer.The concrete synoptic diagram of such synchronizer realization digital display function as shown in Figure 9.

Claims (2)

1. binary channels absolute zero position formula round induction synchrometer, comprise stator substrate (1), rotor substrate (2), stator copper sheet winding (3) and rotor copper sheet winding (4), it is characterized in that, the stator internal channel winding (13) of stator copper sheet winding (3) is made of 8 sections identical segmentation circular arc windings with together circle center, and every section winding is by being formed by connecting at the different circular arc of radius in the radial direction.

2. binary channels absolute zero position formula round induction synchrometer according to claim 1, it is characterized in that: the rotor internal channel winding (14) of rotor copper sheet winding (4) is made up of along the bifilar helix that central point is 180 degree symmetrical distributions Origin And Destination, and the conductor of helix is wide and the gap is wide with the circular arc conductor of stator internal channel winding (13) and the gap equates respectively.

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