SU636654A1 - Functional shaft angular position-to-numeric code converter - Google Patents

Description

(54) FUNCTIONAL TRANSFORMER OF AN ANGLE OF TURNING IN THE DIGITAL CODE

The invention relates to the field of computer technology and can be used in electromechanical computing devices and navigation technology.

There is a known functional conversion of the angle of rotation into a digital code containing a sine-cosine rotary transformer, matching blocks, digital and}) tegrators, a pulse generator, a zero decoder and an adder ij. However, this converter has a low accuracy.

The closest technical solution to this invention is a transform, which, like this converter, contains a sine-cosine rotating transformer, the outputs of which are connected to the information inputs of matching units, the first and second digital integrators, the first counters of each of the which are connected to the output of the other, and the second counting inputs are connected to the pulse generator.

the first zero decoder, the input and output of which are connected respectively to the register output of the first digital integrator and to the first input of the code increment encoder connected by the second BxoflonONf to the register output of the second digital integrator, and an adder whose output is connected to the reference inputs of matching blocks, and the inputs are connected respectively to the source of the reference voltage and through the serially connected decoding converter and memory block to the output of the increment encoder. However, this converter, which has increased noise immunity, has narrow functionality, which is reduced only to the trigonometric angle-to-angle conversion of the angle of rotation.

The purpose of this image-leak is to extend the functionality by reproducing functional-multiplication dependencies with an angular argument. J The above circuit is achieved by converting the copoB multiplier and offset registers, by epementobp registers, the reversible counter, which is the de coding zero, the reverse trigger of the count and the first and second two-channel switches, the first inputs of which are connected respectively to the zero bus There is also a multiplier for the code register output, and the second inputs and outputs are connected to the outputs of the corresponding accumulating modules and to the third ones. the inputs of the first and second digital integrators, the counting input of the invoice reverse trigger is connected to the output of the first nongshs decoder, the direct output of the invoice reverse trigger is connected to the input of the reverse of the first digital integrator and with the control inputs of the two-channel switches, the AND block and the reverse unit the counter, and the inverse output — with the counting reverse input — the second of the digital integrator, the output of the offset code register is connected via the AND block to the set input of the reverse tab, the counting input and the output Directly and through the second decoder, the GPS is connected to an impug generator. On the FNG, 1 a structural diagram of the functional angle of rotation into a digital code is presented. FIG. 2 shows transient and pie charts. The converter contains sinus-core rotating transformer 1, matching blocks 2 and 3, digital integrators 4 and 5, pulse generator 6, dual-channel switches 7 and 8, invoice reversal trigger 9, decoder with code O, memory block 12, decoding converter 13, adder 14, reference voltage source 15, multiplier code 16 register, offset code register 17, AND 18 block, reversible counter 19, and zero decoder 2O. The Converter operates as follows. The operation occurs cyclically at the control signal C in two cycles. In the first cycle, the displaced angular argument — & and correction of the instability of the transformer 1 (temperature effects and amplitude-frequency variations of the mains voltage and (), and in the second multiplication-multiplying transformations on the argument i + G. 54 Signal C in the first cycle sets the trigger O to the state of logical i, And through the block of elements And 18 with the register 17 into the counter 19 zapnsgeaet-with the code of the angle with the axis O-, and through the switches 7 and 8 the initial installation of the codes N (0) sifTy and N (O) -COS-y from the outputs of the blocks 2 and 3, respectively, to integrators 4 and 5. At the same time, counter 19 switches to mode opleni and integrators 4 and 5 -. a subtraction mode and accumulating respectively Proceedings transformations shown pas temporary {Fig 2a) and circular (26) charts.. Since the code content of counter 19 has become non-zero, decoder 20 excites generator 6, whose pulses transform the contents of N and N in integrators 4 and 5 according to the laws of sine and cosine, respectively, relative to the conditional radius - the vector (olj N2 (O) 7a) is also added to the initial contents of the & 19 counter. When the integrator 4 is fixed on the register output of the O, O 00 ... O code, the decoder zero 10 outputs a signal to the gate input of the encoder 11 and switches the flip-flop 9 to the opposite state. Corresponding to the accumulation in the integrator 5 of the radius value - the vector R and adding to the containing counter of the angle code 19, the 1Ifrarator 11 allocates the code equivalent of the correction to the parameters of the transformer 1 and outputs it, taking into account the sign to the memory block 12, from it to the decoding converter 13, then in the decoded form in the form of a voltage, the correction through the adder 14 is supplied to the reference inputs of matching blocks 2,3. In the second conversion step, the trigger signal 9 supplied to the control inputs of switches 7 and 8 is a multiplier code V with register and an integrator 16 zapisgaaets 5 instead of code, and an integrator 4 zapistaets zero code. In addition, the integrator 4 is switched to the accumulation of increments, the integrator 5 is switched to their subtraction, and the reversible counter 19 is also to the subtraction. Now, under the influence of generator pulses 6, a new trigonometric transformation of the contents of the registers of both integrator 4 and 5 relative to the radius of the vector V takes place (Fig. 2a, b). From the counter 19, when the decoder nup 2O blocks the generator with its output. b. The executors of integrators 4 and 5 now correspond to the equivalent equivalents sinCj- e), N, cos () of the type of function-multiply dependencies with a shifted argument. J The nature of these dependencies can be used as a trigonometric coordinator or navigation proclaimer, where f + 0 is a path, X is a course or orthodromy, in-drift, declination, etc. In the same converter at the end of the first cycle, the track angle code Y + in ELEI with G O code ugg -j- is read, as well as from the outputs of blocks 2 and 3 - the codes of its sine and cosine. In addition, when creating rewriting chains for output codes of 2.3 and integrators 4.5 into registers 17 or 16, it is possible to quadrate trigonometric functions, to form all sorts of paired products, to reproduce trigonometric functions

dependencies of the functional argument, etc., which is necessary when constructing various corrective functional transducers for objects with several angular degrees of freedom.

F

inventions

A functional angle converter to a digital code containing a sine-cosine rotary transformer, the outputs of which are connected to information inputs of compacted blogs, the first and second digital integrators, the first counting inputs of each of which are connected to the output of the other, and the second counting inputs are connected to an impedance generator, the first decoder of the nup, the input and output of which are connected respectively to the register output of the first digital integrator and to the first and second digital integrators, is countable the inverse of the trigger of the reverse of the account. connected to the output of the first decoder nud, the direct output of the trigger of the reverse of the account is connected to the input of the reverse of the first digital integrator and to the control inputs of the dual-channel switches, the block of elements And and the reversible counter, and the inverse output with the input of the reverse of the the second digital integrator, the output of the mix code register is connected via the block of elements AND to the SETOBO4HONfy input of a reversible counter, the counting input and the output of which is directly VI through the second null decoder ng to the impuce generator.

Sources of information taken into account in the examination:

1. Zverev A.Ye. et al. Angular displacement transducers into a digital code, L ,, Energie, 1974, p. 137-159.

2. USSR author's certificate No. 506890, cl. G O8 C 9/00, 1974. vom and / iftor of gigrirlpuni copl, connected by the second power). {To the main output of the second digital integrator, and the adder, the output of which is connected to the reference inputs of the coaxial side, and the inputs are connected to the source of the reference voltage and through connected in series dex transducer and the memory block to the output of the encoder code increment, m and II and the fact that, with the extension chain of functionalities, by reproducing the function-multiplying dependencies with the angular ar On the other hand, it contains the multiplier and offset code registers, the AND block, the reversible counter, the second zero decoder, the count reverse trigger, and the first and second two-channel switches, the first inputs of which are connected to the zero potential bus and the output of the multiplier code register, and the second inputs and the outputs are connected to the outputs of the corresponding matching units and to the third counting inputs of the