DE1253797B - Setpoint programmer - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

GERMAN

PATENT OFFICE

EDITORIAL

Int. Cl .:

G05b

G05f

German class: 21c-46/54

Number:
File number:
Registration date:
Display day:

K48582VIIIb / 21c
December 20, 1962
November 9, 1967

The invention relates to a setpoint programmer with a moving program carrier and a follow-up element following the program as well as a position of the follow-up element in an electrical one Signal converting device.

In a known setpoint programmer, the program carrier is designed as a roller into which a groove is incorporated. This groove guides a stylus which, via a linkage, changes a potentiometer that delivers the desired electrical signals. In such a device, changing the setpoint program is costly, since the production of the grooved roller is lengthy and expensive. In addition, a considerable force must be used to adjust the stylus.

In the case of an ordinate scanner, magnetic scanning has already been proposed, one of the respective A signal corresponding to the ordinate length is generated. In this case, magnetic scanning offers compared to electrical scanning no advantages whatsoever. Finally, a guide device is known to equip motor vehicles with magnetic guide tracks. In this case, however, control takes place of the motor vehicle via extensive control loops.

The object of the invention is to create a setpoint programmer simple construction that works safely and can be manufactured with small dimensions at low cost and, in particular, allows change the program quickly and without significant effort.

This object is achieved according to the invention in that the program as a strip of magnetizable or magnetized material is applied in the form of a curve to the carrier and that the follower member movably arranged in front of the carrier is at least one piece of magnetized or magnetizable material Carries material which is designed in such a way that it interacts with the material forming the program curve interacts magnetically and the tracking of the follower by purely magnetic forces causes.

The program curve can therefore be in the form of a tape or a wire in the desired form Form can be applied to the program carrier. The ribbons or wires for different programs can be identified by different colors. Furthermore, the follower is through purely magnetic forces tracked the program curve without a special one for the following element Follow-up drive or some other sequential control would be required. The scanning of the position of the Setpoint programmer

Applicant:

Kabushiki Kaisha Hitachi Seisakusho,
Marunouchi, Chiyoda-Ku, Tokyo

Representative:

Dr.-Ing. E. Maier, patent attorney,
Munich 22, Widenmayerstr. 4th

Named as inventor:

Toshio Konoshita, Ichige, Katsuta-Shi;

Akira Kurabayashi, Kodaira-Shi (Japan)

Claimed priority:

Japan December 21, 1961 (46217)

The follow-up element is preferably carried out according to the known drop hinge principle.

Details of the invention are given below with reference to the drawing of an exemplary embodiment explained in more detail. In the drawing, the same parts are provided with the same reference numerals. It shows

A b b. 1 is a block diagram showing an automatically operating control system in which a setpoint programmer is used

A b b. 2 is a schematic circuit diagram showing, as an example, a conventional setpoint programmer shows,

A b b. 3 shows a side view of an exemplary embodiment of the setpoint programmer according to the invention, in which individual parts have been left out for a better overview,

A b b. 4 shows a plan view of the embodiment according to FIGS. 3 and

A b b. 5 is a front view of the in A b b. 3 shown embodiment.

In an automatic control system such as that shown in A b b. 1, it is generally necessary when a certain work process is to be controlled in accordance with a certain setpoint program f (t) (for example an oven), that is, when so-called program control is to be carried out, this program f (t) to be set beforehand with respect to the control device 2 of the control system. To this end, a pro-

709 687/306

Claims (1)

3 4 gram generator 1 required. By means of the same this elastic arm 27 along the lower the program f (t) generates proportional signals and moves the surface of a sliding wire 28, an output compared with a signal which is determined by the measurement signal according to the respective program Solution of the actual size C of the work process 4 and value given. whose conversion into an electrical signal is generated 5 In the exemplary embodiment shown, the tip is and is returned, and one end of the arm that grabs the sliding wire is lengthened, softness e obtained, it is a manipulated variable, which so that it forms a pointer 30, which is in front of this deviation e makes zero, by the control of a scale 29 located at the top of the device 2 and the actuating device 3 is located on the front of the device. It can be based on this Work process 4 is fed to the desired auto- ίο way through the position of the pointer 30 on the dial matic control (program control) to work plate 29 the position of the grinding wire, d. H. the value digit. of the output voltage signal. An example of a common programmer that, if the synchronous motor 1 continues to rotate, will be type is in A b b. 2 shown (within the dashed line, the scissor plates 25 and 26 by the cams 13 dotted line). A drum 6 with a 15 and 14 decoupled and by a spiral spring 31 in carbon film resistance is brought back to a certain rest position. Subsequently, the rotational speed of a synchronous motor 8 of the drop bracket 22 disengages from the cam 12 via a speed reduction gear 9 and is operated downwards by the force of a spring 32, whereby the program curve / (i), which moves on, whereby the pointer 20 is free will. It follows the course of the amplifier 7, a servomotor SM and andegram curve by means of one of the purely magnetic coupling from FIG. actuation of a potentiometer existing servo In the embodiment shown, a con mechanism is pursued. Thus, a voltage 25, which is proportional to the upstream voltage circuit 33 in the lower part of the opposite program j (t), is arranged, which is printed out and compared with a measurement signal S, in order to lead and has very small dimensions. A deviation e is obtained, and the initial voltage is supplied to the control device 10 for the input voltage required for the aforementioned slip wire. The entire device is guided in a housing 25. small size included. As in A b b. 3, 4 In order to illustrate the details of FIGS. 30 and 5 more precisely, the entire programming of the present invention can be produced in a special embodiment device in a very small size and with a strong example in FIGS. 3, 4 and 5 explained. Performed with reduced weight,
While the present invention is described above in the mechanical system of the programmer by a reference to an exemplary embodiment, the synchronous motor 11 is supplied, the output speed 35 of which is understood by a person skilled in the art that this can be achieved by a suitable speed reduction invention is reduced to almost all other types of moving mechanisms and the cams 12,13,14 supply electrical transmission elements. It is one the speed of rotation of the det can be For example, the movement of synchronous motor 11 further reducing worm 15 of the pointer, which the form of the program provided by and a worm wheel 16, which follows via 40 magnetic coupling, can be transmitted to a Hall element bevel gears 17 and 18 on the front of the, which is in the Magnetic field of a device arranged carrier 19 is arranged with constant Ge permanent magnets, and it can drive the speed. On the carrier 19, the output voltage, which is generated by a tape called the program used. It is self-evident which is perpendicular to the direct current flowing in the element known as the rotational speed of the carrier 19, 45 th element, ie. the program time can be changed arbitrarily by suitable means to obtain an electromotive force to select the gear ratios of the transmission gears written above which coincides with the program. As another example, the movement of the Zeikann. gers by using a tension wire element As previously mentioned, a follower element or pointer 50 can be transmitted as a change in tension of a strain gauge 20 with a magnetic tip so that it can rotate freely. It is also taken for granted and adapted that he borrowed by magnetic coupling that, unlike the previous version, a magnetic material in the form of writing in which the pointer tip follows as a magne curve 21, which is described in the form of the program on the table and the recording of the prodem carrier 19 is arranged. In certain periods, a magnetic material is used, the time segments reversely the material setting the program is lifted by the cam 12, a drop bracket 22, whereby the pointer 20 can be magnetized,
between the drop bracket 22 and an upper clamping ...
plate 23 is held. The clamping force can claims:
by means of spring plates 24 to a suitable value 60 1. Setpoint programmer can be set with a movement. Scissor plates 25 and 26, which th program carrier and the program are driven by the cams 13 and 14, tracked follower and with a position move during the specified time segments of the follower in an electrical signal to move into the position of the clamped pointer 20 and move. converting device, characterized in the same way that the drive arm 27 of a Po- 65 is characterized by the fact that the program is a strip of tentiometer tap. In this way, this arm 27 is brought into the magnetizable or magnetized material position of the pointer 20, which has been moved in the form of a curve (21) on the carrier (19) mood with the program. Since is applied and that in front of the carrier (19)