SU412355A1 - - Google Patents

Description

one

The invention relates to an automatic.mathurliness of the production of amiches,, HaiHpMiMep drives of a single-stitch akokavator, and can be used to measure angular velocities of various mechanisms.

There are known devices for measuring angular velocity, consisting of a speed pulse sensor, form, pulse generator, reference frequency gelrator, pulse counter, switching logic circuit, differential circuit, and trigger.

The purpose of the invention is improving the accuracy of measurement and obtaining continuous information about the magnitude and sign of the angular velocity.

This is achieved by the fact that a switch is connected to the pulse generator and the driver, to which the main and additional counters are connected, the outputs of which, together with the outputs of the com.motor, are connected to the converter code - voltage. Ipulse-potential circuits connected to the trigger 1 are connected to the outputs of the speed sensor. 1, in turn, are connected to the corresponding inputs of the main and additional counters.

The proposed device provides a continuous value of angular velocity in digital or analog forms, allows you to determine

the sign of the angular velocity allows for the measurement of the angular velocity with the necessary degree of accuracy.

Fig. 1 shows a drawing of the device.

A sensor / speed, consisting of a mask M}, lamps L and L2, and two photodiodes with a driver (M1I, is used to obtain speed pulses, which are two sequences of rectangular PULSE,

interconnected in such a way that the pulses from both formers during any rotation of the mask Ml overlap each other. The mask contains N holes, the diameter of which is equal to or greater than the diameter of the photodiode window. Maximum number of holes of 360

Vit a - the angle in which it meets 2

One hole. Photodiodes are spread over the angle p (2 / g + 1) - „-, where n is the natural q of numbers.

To determine the sign of the angular velocity, two cross-connected pulse-potential circuits 2, consisting of diodes D} -D4 and capacitors C / and C2, are used. They are connected to the sensor of the speed sensor and trigger 3, the state of which determines the knowledge of the angular velocity.

The inputs of the imaging unit 4 through differential circuits 5 are connected to the "corresponding imaging unit of the speed pulse sensor. Switch 6 is executed on the trigger, the counting input 1 is connected to the generator 7 and pulses, the frequency of which you & are from full fill and smetshakov 8 at the maximum angular speed sensor, and the switch input to the output of the driver 4.

The counting inputs of identical counters 8 (main / and auxiliary 2) are connected to the switch outputs, and they are also uploaded from the corresponding commutator.

In order to obtain an angular velocity in analog form, counters 8 are made CHBHBL m reverser, 1SH | ADD, addition and subtraction are connected to the corresponding output of flip-flop 3, and the outputs of counters 8 are connected to the corresponding inputs of code-voltage converter 9 (PKN, switch to switch 6).

The device works as follows. As the drive of rotation of the single-bucket excavator rotates, the mask Ml. Impulses from the speed sensor 1 formers –– come in the corresponding inlets and M1pu lsn about -1P o tspsh and al ls, x schemes 2 and di (f | fendialnye chain 5. With the rotation of the mask Ml in ka, ku 0 or one side of one of the inputs of the trigger 5 1Posts1 control impulses with the corresponding impulse-potential scheme, while rotating to the remote side, control the other pulses with a different potential-potential scheme to another one input. 3 will determine the angular velocity coefficient.

I. pulses from the differential circuits 5, corresponding to the front, m and rear edges of the pulses, are fed to the corresponding inputs of the imager 4, which produces a summation of them, possibly due to the time shift. Shaper 4 generates pulses, the number of which is twice the number of i-pulses arriving at the sensor. Pulses of speed, and rigidly connected with the angular velocity of the mask ML

During the rotation of the mask Ml and: m: pulses from the former 4 (alternately through the switch 6, the counters 8 are filled, the reset of which is synchronized by the switch 6 before the corresponding one; and if at the moment the counter is filled, the additional one remembers the previously recorded number pulses. With the legal stroke of the next I1mp | pulse from the pulse generator, the full pulse counter is cleared and starts to fill, and the main one remembers the recorded number until the next pulse of the pulse geerator.

The continuous value of the angular velocity is taken alternately with the frequency of the generator and the pulses from both counters in periody, while

they memorize the recorded number of nm1 pulses, and the sign is determined by trigger 3.

In order to obtain continuous information of the angular velocity B of analog form to counters 8 in the history of storing the recorded

The numbers are connected to a converter "one-way out 9", the corresponding inputs of which are switched by the switch 6.

Subject and use of the product:

A device for determining the angular speed of a single-bucket excavator drive, including a speed sensor, differential circuits, a formatter, an impulse generator, and a main pulse counter, characterized in that, in order to improve operation accuracy and to obtain information on the magnitude and sign of speed, to a pulse generator and connected to the driver

the switch to which the main and additional counters are connected, the outputs of which combine intersection with the outputs of 1KO | Mutator, are connected to the converter code-voltage, and the outputs of the speed sensor are connected to potential-potential circuits connected to a trigger, in turn, connected to corresponding inputs of the main and additional counters.