RU2143733C1 - Non-linear function generator - Google Patents

Abstract

FIELD: automation and analog computer engineering. SUBSTANCE: device has differential comparator, closing and opening keys, sign inverter and XOR gate. EFFECT: increased functional capabilities due to facilitated output of positive and inverted absolute value functions. 3 dwg

Description

 The invention relates to automation and analog computing, and can be used to build functional units of analog computers, means of automatic regulation and control, analog processors, etc.

 Nonlinear converters are known (see, for example, Fig. 3c on page 27 in the journal "Electronic Modeling" N 6, 1992), which reproduce a positive module function.

 The reason that impedes the achievement of the technical result indicated below when using known non-linear converters includes limited functionality, since these converters do not reproduce the inverted module-function.

 The closest device of the same purpose to the claimed invention in terms of features is the non-linear converter adopted for the prototype (Fig. 5d on page 12 in the journal "Electronic Modeling" N 2, 1998), which reproduces a positive module function and contains a differential comparator , closing and opening keys and a sign inverter, and the output and information input of the nonlinear converter are formed respectively by the combined outputs of the closing, opening keys and the combined inverting it is the input of a differential comparator, the non-inverting input of which is grounded, the input of the disconnecting key, the input of the inverter of the sign connected by the output to the input of the closing key.

 The reason that impedes the achievement of the technical result indicated below when using the prototype is limited functionality, since the prototype does not reproduce the inverted module-function.

 The technical result of the invention is the expansion of functionality by ensuring the reproduction of positive and inverted module functions.

 The specified technical result during the implementation of the invention is achieved by the fact that in a non-linear converter containing a differential comparator, closing and opening keys and a sign inverter, the output and information input of the non-linear converter are formed respectively by the combined outputs of the closing, opening keys and the combined inverting input of the differential comparator, the non-inverting input of which grounded, by the input of the disconnecting key, by the input of the inverter of the sign, connected by the output to the input of of a closing key, the peculiarity is that an EXCLUSIVE OR boolean element is introduced into it, the output of which is connected to the control input of the closing and opening keys, the first input is connected to the output of the differential comparator, and the second input is the control input of the nonlinear converter.

 The analysis of the prior art by the applicant, including the search for 110 patent and scientific and technical sources of information, and the identification of sources containing information about analogues of the claimed invention, allowed to establish that the applicant did not find an analogue characterized by features identical to all the essential features of the claimed invention. The definition from the list of identified analogues of the prototype, as the closest in the set of essential features of the analogue, allowed to identify the set of essential distinguishing features in relation to the applicant’s technical result in the claimed device set forth in the claims. Therefore, the claimed invention meets the condition of "novelty."

To verify compliance of the claimed invention with the condition "inventive step", the applicant conducted an additional search for known solutions in order to identify signs that match the distinctive features of the claimed device from the prototype. The search results showed that the claimed invention does not follow explicitly from the prior art for the specialist, since the prior art as determined by the applicant has not revealed the effect of the transformations provided for by the essential features of the claimed invention on the achievement of the technical result, in particular the claimed invention, the following transformations are not provided;
- addition of a known product by any known part (s) attached to it according to known rules to achieve a technical result in respect of which the effect of such additions is established;
- replacement of any part (s) of a known product with another known part to achieve a technical result, in respect of which the effect of such a replacement is established;
- the exclusion of any part (element) of the product with the simultaneous exclusion of the function due to its presence and the achievement of the usual result for such exclusion;
- an increase in the number of elements of the same type to enhance the technical result due to the presence in the tool of just such elements;
- the implementation of a known tool or part (s) of a known material to achieve a technical result due to the known properties of this material;
- the creation of a tool consisting of known parts, the choice of which and the relationship between them are based on known rules, recommendations, and the technical result achieved in this case is due only to the known properties of the parts of this tool and the relationships between them.

 The described invention is not based on a change in the quantitative characteristic (s), the presentation of such signs in relationship, or a change in its form. This refers to the case when the fact of the influence of each of these characteristics on the technical result is known, and new values of these signs or their relationship could be obtained on the basis of known dependencies and patterns. Therefore, the claimed invention meets the condition of "inventive step".

 In FIG. 1 shows a diagram of the proposed nonlinear converter. In FIG. 2 shows graphs of functions reproduced by him.

 The non-linear converter contains a differential comparator 1, a closing key 2, a disconnecting key 3, an inverter 4 characters, a Boolean element EXCLUSIVE OR 5. The non-inverting input of the comparator 1 is grounded, and the inverting input is combined with the input of the inverter 4, connected by the output to the input of the key 2, and with the input of key 3 is the information input of the converter, the output Z of which is formed by the combined outputs of keys 2 and 3 connected by the control input to the output of element 5, the first input of which is connected to the output of comparator 1, and the second stroke is the control input of the converter.

(фиг. 2a), а при f = 1 - инвертированную модуль-функцию

(фиг. 2б).The work of the proposed nonlinear converter is as follows. An analog signal x and a signal f ∈ {0,1} are respectively supplied to its information input and control input. For f = 0 and x> 0, the output of comparator 1 will be a logical "0", the output of element 5 will also have a logical "0", key 2 will be open, key 3 will be closed, the signal from its information input will pass to the output of the converter, t .e. Z = x. For f = 0 x <0, the output of comparator 1 will be logical "1", the output of element 5 will also be logical "1", key 2 will be closed, key 3 will be open, the signal from the inverter 4 will pass to the converter output, t. e. Z = -x. For f = 1 and x> 0, the output of comparator 1 will be logical "0", at the output of element 5 there will be logical "1", key 2 will be closed, key 3 will be open, the signal from the inverter 4 will pass to the converter output, t. e. Z = -x. For f = 1 and x <0, the output of comparator 1 will be logical "1", at the output of element 5 there will be a logical "0", key 2 will be open, key 3 will be closed, the signal from its information input will pass to the output of the converter, etc. e. Z = x. Thus, a nonlinear converter with f = 0 reproduces a positive module function

(Fig. 2a), and for f = 1, the inverted module function

(Fig. 2b).

 The above information allows us to conclude that the proposed non-linear converter has wider functionality compared to the prototype, as it provides the reproduction of positive and inverted module functions.

Thus, the above information indicates the following conditions are met when using the claimed device:
- a tool embodying the claimed device in its implementation, is intended for use in industry, namely in the field of automation and analog computing as a functional unit of analog computers, means of automatic regulation and control, analog processors, etc .;
- for the claimed device in the form described in the independent clause of the claims, the possibility of its implementation using the means and methods described in the application or known prior to the priority date is confirmed;
- a tool embodying the claimed invention in its implementation, is able to ensure the achievement of the perceived by the applicant technical result.

 Therefore, the claimed invention meets the condition of "industrial applicability".

Claims (1)

 A non-linear converter comprising a differential comparator, closing and opening keys and a sign inverter, the output and information input of the non-linear converter being formed by the combined outputs of the closing and opening keys and the combined inverting input of the differential comparator, the non-inverting input of which is grounded, the input of the opening key, the input of the sign inverter, connected by an output to the input of the closing key, characterized in that a Boolean element is included in it EXCLUSIVELY ITS OR, whose output is connected to the control input of the closing and disconnecting keys, the first input is connected to the output of the differential comparator, and the second input is the control input of the nonlinear converter.

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