JPS59122359A - Dc linear motor with dc generator - Google Patents

Abstract

PURPOSE:To enable to facilitate the control of the speed of a DC linear motor by providing an armature coil and a generating coil oppositely to a field magnet, using one as a movable element and the other as a stator. CONSTITUTION:An armature coil 10 is provided oppositely to a field magnet 5. A plurality of generating coil 16 groups superposed and disposed by displacing the phase are opposed to the magnet 5. The magnet 5, or either one of the armature coil 10 and the generating coil 16 group is used as a movable element, and the other is used as a stator. The speed is controlled by a control circuit 18 on the basis of a smooth generating voltage waveform having less ripple obtained from the coil 16 group.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a DC linear motor having a DC generator.

The applicant has already filed an application for a DC generator (r)K in a linear motor. Here, 1g in the form of frequency from the DC generator? There are some that can be extracted, and others that can be extracted as a signal in the form of voltage. The former is expensive because it requires an F (frequency) - ■ (voltage) conversion circuit, whereas the latter provides a signal in the form of voltage, which is convenient for controlling the propulsion speed of the linear motor. Since it does not require an expensive F-V conversion circuit, it is an inexpensive DC generator. There is an advantage that a DC linear motor with

The present invention is an improvement of the previously applied DC linear motor having a DC generator, and moreover, it is possible to use a large number of generating coils each having six DC generators, so that the DC linear motor having six DC generators has performance r. The purpose is to obtain a motor 7.

The object of the present invention is to provide a field magnet r, provide an armature coil 2 opposite to the field magnet, and
A group of multiple power generation coils arranged one on top of the other with a phase shift of t? Is it made to face the above-mentioned field magnet, and one of the above-mentioned field I magnet, armature coil, and generator coil side is set as wa @, and the other is set as a stator? This is achieved by providing a DC linear motor with a DC generator characterized by:

The present invention will be described in detail below with reference to drawing r.

First, a first embodiment of the present invention will be described.

Fig. 1 is a side view of a moving coil linear motor 1, in which 2 is a stator with a long plate-like trap formed along the running direction, and both ends of the stator are fixed to pillars (not shown). There is.

Reference numeral 3 denotes a linear mover that moves back and forth in a linear manner opposite to the stator 2; 4 is rotatably supported by the mover 3;
It is rolled by running rollers that slide along both the top and bottom sides.

Fig. 2 is a vertical cross-sectional view of the nest 1 in Fig. 7 as seen from the running direction of the mover 2, and 5 is a vertical cross-sectional view of the nest 1 as seen from the running direction of the mover 2. ? Long plate-shaped field magnet with p (p is selected as a positive integer of 3 or more, but in this example, p = 4 or more?) poles alternately, 6 is a field magnet 5-hole mold 7 is a guide groove formed along the running direction on the top and bottom of the plastic 6; 8 is a plate-shaped magnetic yoke; 9 is a typical U-shaped yoke in cross section; Fixed to yoke 8,
The magnetic yokes 8 and 9 run together. Reference numeral 10 denotes an armature coil, which is wound into a rectangular frame shape as shown in FIG. 4, for example. Figure 5 is a developed diagram of the armature coil 10 and field magnet 5.
, the armature coil 10 has conductor parts perpendicular to the running direction, that is, conductor parts 10a and 10a' that contribute to thrust, and the opening angle width is the same as the ff1M width of the side transmission magnet 5? Although it is used here, it may be an integral multiple of the above ta 40 width. but,
The 7c-shaped Naisogo coil shown in Figure 4? (When using 1'i, the opening angle width of the conductor parts 10a and 10a' that contribute to the thrust is 2n-1 (n is a positive cage number of 1 or more) times the magnetic pole width of the field magnet 5. It is desirable to use one with a width of 2. In this embodiment, the armature coils 10 are arranged on the surface of the magnetic yoke 9 so that two armature coils do not overlap in the longitudinal direction.1
1 is a Hall collector or Hall IC used as a position detection element
As shown in FIGS. 2 and 5, the conductor portion 10a (10a
' may be placed above). In addition, ffl! The conversion element 11 is located at the same position as the conductor portion 10a or 10a' that contributes to the thrust of the armature coil 10.
, 10a' may be disposed on the surface of the magnetic yoke 9 at a position outside of 10a'. Alternatively, when there are a large number of armature coils 10, the conductor portion 10a or 10 contributing to the thrust of the armature coil 10
It is preferable that the magneto-electric transducer 117 is disposed at a position in the cavity within the frame of the armature coil 10 (see FIG. 1), which is located at the same position as a'. When the magnetoelectric transducer 11 is disposed at such a position, the magnetic air gap becomes thinner by the thickness of the element 11, so there is an advantage that a strong thrust can be obtained. 12 is a through hole formed on the upper and lower sides of the magnetic yoke 9, 13 is a shaft horizontally fixed between the mother yokes 8 and 9, and 4 is the shaft 13.
14 is a semiconductor rectifier for driving 10 armature coils, 15-1 and 15-2 are positive power terminals, respectively. , shows the negative power terminal (see Figure 5).

16 is a power generation coil, and field magnet 5? As shown in FIGS. 6 to 8, on the surface of the magnetic yoke 8 which faces the armature coil 10 via the magnetic material yoke 10, the magnetic yoke 8 is disposed in a phase-shifted manner so as to be superimposed in a stepped manner. Is the generating coil 16 frame-shaped as shown in Fig. 6? I am using it. FIG. 6 shows a plan view of the generator coil 16 arranged in an overlapping manner, FIG. 7 is a sectional view of the field magnet 5 and the generator coil 16, and FIG. 8 shows the field magnet 5.
A developed diagram of the power generation coil and the generator coil is shown. The power generation coil 16 has a conductor portion perpendicular to the traveling direction, that is, a conductor portion 16a that contributes to power generation.
and 16a' are wound so that the opening angle width is an integral multiple of the field magnet 5, or 2n-1 (n is a positive integer of 1 or more) times. In this embodiment, the opening angle between the conductor portions 16a and 16a' contributing to power generation is determined by the field magnet 5.
16 generator coils are used, each with the same bending width as the magnetic pole width. Is the power generation coil 16 made of thin wire with warp resistance? Five coils are wound and formed to be extremely thinner than the armature coil IO, and are arranged in a stepwise manner as shown in FIGS. 6 and 7. The reason for doing this is to arrange as many power generating coils as possible in a limited area to reduce the voltage fluctuation. In this embodiment, there are five phases, but the greater the number of phases, the better. 17 is a rectifier circuit, and this rectifier circuit 11 and the power generation coil 1B form a DC generator (tacho generator). Reference numeral 18 denotes a control circuit for keeping the speed of the mover 3 constant by controlling the voltage or current applied to the semiconductor rectifier 14 by the output of the DC generator.

Is Figure 9 a circuit diagram of a DC generator? It must be shown.

One end of the coil 16 is connected to the T ground GND, and the other end receives a signal from the generator coil via a resistor. operational amplifier OP,
is being entered. 17-1 constitutes the summing amplifier 7;
-2 is operational amplifier OP, and OP.

A rectifier circuit is configured as shown in FIG. Since the operational amplifiers OP and U also serve as low-pass filters, the output ripple is further reduced and an ideal DC voltage can be obtained. This DC voltage is terminal 19? By inputting the signal to the control circuit 18 via the control circuit 18 and controlling the 14 semiconductor rectifying devices using the signal from the control circuit 18, the direct running speed of the moving element 3 can be completely controlled. Incidentally, as a matter of course, the generated voltage is determined by the field magnet 5 and the generating coil 1.
6 is obtained from the power generating coil 16 by moving relative to the power generating coil 16.

In the above embodiment, the field magnet 5 side is used as a stator, and the armature coil 10 and power generation coil 16 sides are used as a movable element, but it goes without saying that the arrangement may be reversed.

As is clear from the above configuration, the present invention has a limited number of generator coils arranged in a nine-sided configuration, so it is possible to obtain an ideal smooth power generation pressure waveform with few ripples, so it is necessary to smooth the waveform. There is no speed control, and speed control can be easily performed. Further, by extracting a signal in the form of voltage from the generator coil, an expensive F-V conversion circuit is not required, so that a direct current linear motor having a direct current generating organ can be obtained at low cost.

[Brief explanation of the drawing]

Figure 1 is a side view of a moving coil type linear motor showing an actual flow example of the present invention, and Figure 2 is the same as that shown in Figure 1.
FIG. 3 is a perspective view of the field magnet, FIG. 4 is a perspective view of the armature coil, and FIG.
The figure is a developed view of the field magnet and armature coil, the 6th section is a plan view of the generator coils arranged in an overlapping arrangement, the 7th figure is a cross-sectional view of the field magnet and the generator coil, and the 8th figure is the field magnet. FIG. 9 is a developed diagram of the generator coil and a circuit diagram of the DC generator. DESCRIPTION OF SYMBOLS 1... Moving coil type linear motor, 2... Stator, 3... Mover, 4... Running roller, 5
...Field magnet, 6.--Plastic,
7...Guide groove, 8.9...Magnetic material yoke,
10... tEd child coil, 11... Magnetoelectric conversion element (
horizontal thin element), 12... through hole, 13...
Shaft, 14... Half ring rectifier, 15-1...
Positive power terminal, 15-2... Negative power terminal, 16... Generating coil, 17... Distorted current circuit, 18... Control circuit, 19... Terminal. Patent applicant Yoshi Takahashi Teru6be

Claims (1)

[Claims] 1. A field magnet purple film, an armature coil provided opposite to the field magnet, and a plurality of generating coil groups r arranged overlappingly with phase shifts relative to the field magnet. A DC linear motor having a DC generator in which one of the field magnets or the coils of the electric coil group of the machine is used as a moving element on one side and as a stator on the other side. . 24 Does the above field magnet have p-poles (p is a positive strain number of 1 or more) with N and S magnetic poles on each other along the moving direction of the mover? A direct current linear motor having a direct current generator according to item 1. 3. The armature coil is formed by winding so that the opening angle of the conductor portion that contributes to the thrust is an integral multiple of the body width of the field magnet. DC generator mentioned? DC linear motor with. 4. The above-mentioned armature coil is characterized in that one corner of the conductor portion contributing to the thrust is wound to a width 2n-1 (n is a positive integer of 1 or more) times the magnetic pole width of the field magnet. A DC linear motor having a DC generator according to claim 3. 5. A DC linear motor having a DC generator as set forth in claim 3 or 4, wherein the armature coil is wound into a frame shape. 6. In the case of the above-mentioned armature coil moving type, the DC power generation according to any one of claims 1 to 5, wherein the position detection collector r is placed on the side of the armature coil. A DC linear motor with a 7. The above-mentioned position horizontal collector is set with -Den summer exchange collector t%
Feature #! F: DC generator according to claim 6?
DC IJ near motor with. 8. The above-mentioned magnetoelectric conversion element is arranged in a part facing a conductor part contributing to the thrust of the armature coil. motor. 9. Is the magnetoelectric conversion element arranged at the same position as the conductor part that contributes to the thrust of the armature coil? The DC generator described in claim 6 or 7 is characterized by %.
near motor that flows. 10. Claim 9, characterized in that the magnetoelectric conversion element is disposed in an aerodynamic turning part within the frame of the armature coil, which is located at the same position as the conductor part that contributes to the thrust of the armature coil.
A DC linear motor having six DC power generators as described in Section 1. 11. Claims 1 to 10, characterized in that the power generation coil is wound so that the opening angle of the conductor portion contributing to power generation is an integral multiple of the body width of the field magnet. Which DC generator is mentioned? DC linear motor with. 12. The above-mentioned power generation coil is characterized in that the opening angle of the conductor portion that contributes to power generation is 2n-1 (n is a positive integer of 1 or more) times the magnetic pole width of the field magnet. A DC IJ near motor having six DC power generators according to claim 11. 13. The DC generator according to any one of claims 1 to 12, characterized in that the power generation coil is wound thinner than the armature coil. DC linear motor with. 14. Is the above generator coil wound into a frame shape? Features Claims 1 to 13
A DC linear motor having a current generator according to any one of paragraphs.