SU60982A1 - Device for multiplying three or more values - Google Patents

Description

BASIC Auth. St. LI 49959 describes a device for measuring times; 1-part of the spine, converted into a constant current source, made in the form of a ko.kievogo rheo.horda with a turnaround. 13 The motor circuit is connected to a null relay that is triggered at the time of a compensating voltage proportional to the measured value, but with a constant voltage applied to the resistor.

In the present invention, except for the device according to ed. St. l 49959, the electromagnetic clutch connecting the dowel cord with the axis of the device is used to register the average speed of the latter.

The purpose of the device is to multiply nz.meryami greatness, convertible part - in ekorost of rotation of the slider of a reo chord and, the other part - in a poi voltage applied to the rheochord.

The number of multiplied values for one device, the type proposed by the author. St. Л1 49959, equal to three, but to be produced. It is increased by adding similar elements.

The circuit of the described device for the multiplication of two or three magnitudes is shown in FIG. one; in fig. 2 shows the device, allowing you to multiply seven quantities.

Consider how multiplication is performed in the scheme of FIG. one.

When two values are multiplied, the constant voltage I „i is applied to the ends of the NC of the dynamic compensator. The axis Oi, on which the slider P is fixed, performs an irreversible motion with a number; revolutions B, where K-2 is the coefficient of rotation, and В | is one of the measured values to be multiplied by another AI. The value B is measured by a mechanical method and is in

No. 60982

direct proportionality with the speed of 111. by the end of the rail and its engine (a and b) the voltage is applied And,;, which is directly proportional to the other measured value AI, i.e. Yx, L1-L, where K is coefficient of proportionality, and A-size measured by an electrical method.

The electromagnetic clutch MN is turned on at the instant when the slider P passes the beginning of the N reichord and turns off when the slider H reaches the compensation position X.

Switching on the 3Mi electromagnet can be done in various ways, turning off the osustemostol by means of the null indicator HMi.

The quantitative value of the value A is determined by the length of the slider path I along the reichord, i.e., the distance between the beginning of the end of the rechord I and the 11 compensation point L. Naturally, the time of movement of the slider I at the section of the NC of the reichord will depend on the speed of its rotation. This time is inversely proportional to the speed of rotation of the slider. It is interesting to note that the value of Bi can be determined not only by the number of revolutions of the axis O, but also by the switching frequency of the UMA electromagnetic clutch. The value A can be determined by the duration of the switching on of the electromagnetic clutch per cycle. The product of the frequency of the inclusions and the duration of the inclusions of the electromagnetic clutch is proportional to the product of the two measured vectors. AI and V.

An analysis of the operation of the circuit leads to the conclusion that the average angular velocity of the axis 02 in one cycle is directly proportional to the product of the measured separately A and Si values. If a buffer device BI (springs, masses, dampers) is placed between the electromagnetic coupling MN and the receiving device IJPi to make the intermittent movement of the axis Oz smooth, then the rotational speed of axis 0 will be directly proportional to the product of two separately measured values AI and Bj:

n, - K.. L. AT..

With a relatively slow izmeny of the Yupdhps values L | ib | YAR receiver can indicate the instantaneous value of the product of the values of L | and BI.

When multiplying three values, the voltage is directly proportional to the measured value AI:

//.j: / {p-Aj, voltage // „i is inversely proportional to another measurable quantity Ci

one, ---; ii slider speed, still equal

// 1 1g; / (,. Zj,

Analysis of the scheme shows that:

// - З- / 4Л 5 С ,, where Л1 and С are quantities measured by an electrical method, and B is measured by a mechanical method.

For the multiplication of a large number of quantities, a scheme is used, but shown in FIG. 2

It is easy to see that the diagram of FIG. 2 consists of several diagrams of FIG. one.

The principle of operation of the circuit remains the same. A device showing the instantaneous value of the product of seven quantities can be selected as the Yarg receiver. If you wish to obtain the integral value of the product of several quantities (for example, when measuring the flow rate), the buffer device would be b :; can not apply.