SU457998A1 - Linear interpolator - Google Patents

Description

to be performed with one dividing drum). The shaft 1 is connected, for example, with a powder or synchronous electromagnetic clutch 5 to the shaft 6, which is connected with a gear traction drum 8 to mix the secondary program carrier 9, for example a tape, via a gear guitar 7. For recording magnetic tags on ferromagnetic reels, you want to write notes, magnetic heads 10 and 11, fixed along a curved line around ferromagnetic reels 2 and 3.

The recording head in the first row is set at a distance, for example, equal to one hundredth of a half of the circumference of the reading head and, therefore, divides the half of the drum circumference into 100 equal parts. The head of the second row in the same way divides the half circumference of the drum into 99 parts, and so on. Therefore, in each subsequent row, parts are read by one less than in the previous one. The head of the hundredth row counts 1 part from the half circle. Therefore, pulses from different heads, written on the pitch drums in the form of magnetic marks, to the read heads 12 and 13 arrive at different time intervals.

The read magnetic heads 12 and 13 are fixed along the axis of the division drums, and each recording head has its own reading head. In principle, one wide reading head can be used for reading, since all reading heads emit pulses into one common communication channel. The output pulses from the polynomial are written to the secondary program carrier. If it is necessary to change the frequency of the labels recorded on the secondary program carrier, a separating drum 2 and a gear drum 8 are installed, for example, a powder or synchronous electromagnetic clutch 5. In the case of pulses, for example, the loop control system changes the frequency of output pulses between A synchronous electric motor 4 and a separating drum 3 are installed, for example, a powder or an asynchronous electromagnetic clutch 14. The control voltage on the powder e clutches are programmed.

The interpolator has a device for inputting information with two reading, operating in turn, blocks of input photodiodes 15i or 16i for one and 152 or 1b2 for another channel (coordinates).

Each read head has communications for inputting the numbers of pulses being processed from one frame 15i and ISg to the pulse counters of another frame.

The blocks of input photodiodes 15i, 162, 16i, and 1b2 determine the activation of a pair of magnetic heads 10-13 and II-12. Therefore, each ferromagnetic drum can

program your own frequency of pulses by putting into operation any number of magnetic heads. Programming the total number of pulses for each program frame is made by the numbers entered into the subtracting meters 17i, 1/2 for one type or counters 18 and 182 for the other.

The operation of the circuit begins by entering numbers in

counters 17i and IBi from blocks 15i and 152 of the selection of recording heads by illumination of the corresponding photodiodes, as well as setting the required voltage on the control windings of the powder couplings.

To start the interpolator, the first frame sends a programmed signal to point a, which is fed to the enable inputs of the inhibit circuit 19i, 20i and through the communication 21 to the inhibit circuits 192 and 202 of the first frame and simultaneously to the inhibit inputs of the inhibit circuits 22), 23i, 222 and 232 of the second frame. The same sypnal enters through the blocks 15 and 152 on the recording heads for applying the first magnetic marks on the drums 2 and 3.

The recording magnetic heads are connected on the input side of the connection pulses to the blocks of the input photodiodes 15i and 16i or 152 and 1b2, which provide a selection of tens.

The output ends of the windings of the magnetic heads are connected to blocks of photodiodes 15i and 16i or 152 and 1b2, which ensure the choice of units in the bits of the tens (see Fig. 3). On the output channels of these blocks, prohibition schemes 24 and 25 are available to exclude the operation of recording heads on the channel, which prepares the program carrier to work on the second frame. Ban 24 runs simultaneously

with the prohibition scheme 20i in one frame and the diagram 25 but in another frame.

The marks applied to the rotating drums are read by the read heads, the pulses from which are directed to

pulse shapers 26.

The formed pulses enter magnetic recording heads of the unitary code on the secondary program carrier and pulse counters.

At the same time, through the delay circuits 27 and the channel prepared by the program carrier, the pulses arrive at the recording heads 10 and 11. Then the cycle repeats until the counter issues a command to execute a single frame program.

The signal from the counter imposes a ban on circuits 19i, 20i and on communication 28 - ia circuits 192 and 202 and removes the ban from circuits 22, 232222 and

232- And since there is a time delay, the last signal coming from the counter in the first frame will not be recorded on the ferromagnetic reels. This signal, which is the last one in the first frame, will be recorded on the ferromagnetic drums over the channel of the second frame prepared by the program carrier. Thus, when read from the reels, it will be the signal for recording the first magnetic mark on the second frame of the secondary program carrier. The presence of links 21 and 28 exclude errors in the operation and the controller, possible as a result of miscalculation of one of the counters.

In the described manner, the second frame is processed. The output signal from the counter simultaneously goes to the actuator 29i for changing the frame and preparing a new program. The operation of another ferromagnetic drum is carried out in a similar manner. As TaiK has its own counters in the scheme of each Barb, actuators for moving the primary program carrier are triggered by the arrival of a signal from any counter of this frame.

In the case of issuing pulses from an interpolator directly to the system, for example, contour program control, these pulses are on-off to determine the error. In this case, the minimum price of a pulse coming from the interpolator must be equal to the minimum price of a pulse coming from the feedback sensor. At the price of a pulse, for example, 0.001 mm per one half turn of the drum along any of the coordinates, it is possible to work off the movement from 0.001 to 0.1 mm depending on the selected row of recording heads. In this case, the signals will follow at equal intervals of time, and the Sunnort, working at different coordinates, will come at the same time to the reference points through each half-turn of the reels. And as between the interpolation nodes, a whole number of half turns of the drums can be set, the resolution of the system will be 0.1 mm. In this case, the possibility of a series of impulses in the given interpolation regions is completely excluded.

In the interpolator circuit, cross-links 30 and 31 are provided, which send the last pulse from the previously processed counter of one drum to the recording head operating from the other drum (the other coordinates). The same connections 32 and 33 are provided for a different frame.

Suppose first the counter 171 is triggered. The output signal from the counter enters the OR 34 element of the actuator 29 for moving the primary program carrier and goes through the connection 33 to the magnetic head 35 to record the label on the secondary program carrier regardless of the arrival of the signal from the counter 18. And vice versa if the counter 18 first acted in a similar way, regardless of the end of the counting on the counter 17i, the communication signal 32 goes to mark the magnetic head 36. The introduction of the links 21 and 28 allows differentiation mpulsov within a half-turn drums without ferrodynamic

loss of the last impulses coming from the drums if their output does not match at the same time. Due to this, the resolution of the interpolator is increased.

Links 21 and 28 allow the interpolator to work with outputting signals only on one output channel (one coordinate), if the number is not programmed on the second channel. In the case of repetition of unprogrammed frames by one coordinate (channel) on the primary program carrier, the prohibition is encoded in the element “Prohibition (not shown) in one of the links of the processing coordinate (channel).

To increase the independence of the differentiation of the frequency of the output pulses through the various channels of the interpolator within one frame it provides for pairs

magnetic heads (one recording and one reading) with separate pulse shapers and with additional counters (due to the analogy with the basic, previously described, additional shapers and counters are not shown in the drawing) for entering the number of whole half-turns (semi-circles) in them 15i, ISa or

16, 1b2.

Additional counters count (integer) semicircles of ferromagnetic drums and then remove the prohibition from the main counters, i.e., put them into operation with the corresponding rows of magnetic heads for counting the programmed pulse

from the last semicircle (half-turn).

The presence of counters for counting semicircles can significantly reduce the pulse frequency from one of the output channels, for example from one of the drums.

the impulse can follow through several turns only after the ban has been lifted from the counters of the recording heads, which differentiate the last half-turn of the ferromagnetic drums at lower angles. In other words, the sum of integer and fractional semicircles will be worked out on one of the drums, after which one pulse will be given, while on the other channel the pulses will follow with any frequency programmed on the other ferromagnetic drum.

It is possible to program in the same way the issuance of pulses through one of the channels through a certain number of whole half-turns (semi-circles).

Additional meters can also be used for separate counting of decades or hundreds of pulses, i.e. whole half-turns of the dividing reels, and main counters for the node and tens pulses counting.

The separate counting of hundreds and units of pulses reduces the capacity of the counters without reducing the pulses on the output channels of the interpolator.

For counting semicircles, one can use pulses from the heads of the hundredth row, which can be connected to the main or additional counter by coding on the primary program carrier.

The presence of links 21 and 28 allows the interpolator to use only two counters for testing by two channels (coordinates).

If you enter the program on the counter through the prepared photodiodes of another frame by removing the prohibition from it after testing the previous frame, the interpolator circuit can work on one common counter instead of four.

If the output channels from the reading heads selectively from the program carrier are connected to several pulse shapers and with several heads recording labels on the secondary program carrier, then the proposed interpolator can be used as a multi-channel (multi-coordinate) one.

Additional devices can be installed on the output channels of the interpolator, for example, dividers or pulse-to-voltage converters, etc.

Subject invention

Linear interpolator containing pulse drivers connected to magnetic recording heads on secondary program carrier, pulse counters, outputs

which are connected to the input of the actuator, the first and second blocks of the input photodiodes, the outputs of which are connected to the inputs of the pulse counters, the inhibit circuit and the delay circuit, which is different in order to increase the uniformity of signal distribution over time, simplify the device and increase its reliability, it contains a ferromagnetic drum with a number of magnetic heads located at an angular distance equal to - part of the arc half

the circumference of the respective reading heads installed along the generatrix of the ferromagnetic drum, the outputs of which through the pulse shaper are connected to the first inputs of the first and second inhibit schemes and the first inputs of the first and second delay circuits, the outputs of which are connected to

the first inputs of the third and fourth prohibition schemes, respectively, the outputs of the first and second prohibition schemes are connected to the counting inputs of the first and second pulse counters, respectively, whose outputs are connected

with prohibiting inputs of the first and second prohibition schemes, respectively, prohibiting inputs of the third and fourth prohibition schemes, enabling inputs of the second and first prohibition schemes, and second inputs of the second and first

delay circuits, respectively, the outputs of the third and fourth prohibition circuits are connected to the inputs of the first and second blocks of input photodiodes, the outputs of which are connected to the inputs of the recording heads of the ferromagnetic drum.