SU513367A1 - Two-digit angle-code converter - Google Patents

Claims (2)

(54) DOUBLE-ACCOUNT CONVERTER ANGLE-CODE 3 The device works as follows. The signal from the output of the generator 1 is fed to the input of the frequency divider 2, synchronously CBED amplifier 6 and the first input element And 11, On-output triggers frequency divider 2 are formed, the rectangular pulses of the time mask that arrives at the corresponding inputs of the sensors 8, 9. The rectangular signal from the output of the last trigger of frequency divider 2 is also fed to the input of filter 3, at the course of which a sinusoidal signal with a frequency, is generated. where is the frequency of the generator of rectangular pulses; number of triggers frequency divider This signal is fed to the inputs of phase shifters 4, 5, Useful signals carrying information about the angular position of the measured shaft from the outputs of phase shifters 4, 5 are fed to the inputs of the corresponding amplifiers 6, 7 The outputs of amplifiers 6, 7 are connected to the inputs shapers 8, 9. To eliminate the reading uncertainty, phase pulse amplifiers have clock inputs, and the reading pulse at the output of each phase pulse amplifier occurs only when two inputs of the amplifiers isutstvuyut input signals. The synchronizing input of amplifier 6 is connected via a delay element 13 to the output of the pulse generator 1. The synchronizing input of amplifier 7 is connected to the output of an AND 11 element, the first input of which is connected to the output of the generator 1, and the second to the output of the OR 1O element. The first input of the element OR 10 is connected to the output of the trigger 12, and the second input to the output of the splitter trigger, frequency 2. The formation of the exact counting code occurs with the help of amplifier 6 and the matching elements of the former 8, the coarse code with the exact reference code is formed with elements AND and OR, the formation of a coarse-reference code is explained by timing diagrams (FIG. 2), which denote: a): the signal output of an impulse generator 1, which is used to form a synchronizing signal from the ignition, sent to cHHXpoHHslSpyloiurHu stroke amplifiers; 7; b) the signal at the output of one of the jog Bpo frequency divider 2, This signal is used to generate a clipping signal and can be used to form the channel code of an exact Sample; c) the signal at the output of another trigger splitter 2, which is used to form the younger digit of the coarse reference code, as well as to form the code of the exact counting channel; d) a signal at the output of the subsequent trigger of the frequency divider; ; e) the signal at the output of the splitter trigger (Frequency 2, which is used "to form the highest bit of the coarse billing code, as well as to form the higher bit of the exact counting code; e) the phase pulse of the exact counting corresponding to the zero crossing point of the sinusoidal signal of the phase shifter 4 channels of exact counting; g) a coarse-phase phase pulse corresponding to the zero-crossing moment of the sinusoidal signal of the phase shifter 5. The coarse-phase phase pulse when shifting the phase shifters is shifted relative to the exact-phase phase pulse (at zero position of the exact-phase phase shifter) by the value of dHoper, 1 (Fig. 2c) equal to 1/4 quantum of the youngest bit of rough counting; g) the output signal at the output of the element And the imager 9, which arrives at the synchronization input of the amplifier 7 when the code value of the high bit is accurate, counting c) the read pulse at the output of the amplifier 7, and is fed to the inputs of the imager 9 when the code value of the high bit of the exact reference u) the output signal at the output of the element And the imager 8 with the code value of the highest bit of the exact reading k) the read pulse at the output of the amplifier 7 with the code value of the highest bit of the exact reading I, FIG. 2e, e shows the temporal positions of the phase pulses of the phase shifters 4, 5 for the zero position of the converter rotor. In order to match the codes of the exact and coarse channels, the coarse phase pulse shifts when the phase shifter 5 is tuned in the direction of the advance from the precision phase pulse (at zero position of the phase shifter 4) by an amount equal to 1/4 of the least significant bit of the coarse count. Consider the reconciliation process for the two cases. The high-order code of the exact reference is 1 (Fig. 2, g, e). In this case (the phase pulse of the coarse reference signal, shifted when tuned in the direction of advance, is directly used to: write off the coarse count code. For this, from the output of the trigger 12, which remembers the code of the higher bit, the OR 10 resolving Negative potential, while the output (the OR element will also have a negative potential.: Negative permitting potential (the OR 10 element goes to the second | Input element 11), the first input to the second receives the synchronizing impulses | generator a 1 (Fig. 2, a, g). Due to this, at the time of coincidence of the coarse-reading phase pulse and the synchronizing pulse, a negative read pulse appears at the output of amplifier 7 when all transients of the frequency splitter are completed. and a code is generated that corresponds to the true position of the converter shaft. The high-order code of the exact count is O (Fig. 2, and, k); In this case, the coarse phase signal pulse must be shifted late to 1 from the zero phase position. raschatel. To do this, the output of the trigger 12, which is in the O position, receives the inhibitory (zero) potential per element. At the same time, at the output of the OR 10 element, there are rectangular pulses (Fig. 2, b), which correspond to rectangular pulses of the corresponding output of the trigger of the clock divider. 2. The rectangular pulses from the output of the element OR 10 arrive at the second input of the element 11, the first input of which receives the synchronizing pulses of the generator 1. At the output of the element 11, there will be a signal shown in FIG. 2, and. At the output of amplifier 6, an output pulse is generated only when a phase pulse of the signal from the phase shifter 4 and a clock pulse 676 are present at the inputs of this amplifier (Fig. 2, b, a). Due to the presence of a frequency divider 2 in the synchronization signal of the square signal, the phase pulse is roughly shifted towards the delay side (Fig. 2, k). In this case, at the outputs of the formers of the exact and coarse readings, a code is generated corresponding to the position of the converter shaft. For the formation of a coarse reference code, the presence of a delay element 13, which is used for forming a reference code, is not necessary, since, thanks to the driver, the error from reading uncertainty is eliminated. Coordination — codes of accurate and coarse readings at any position of the shaft of the converter are similar. I Claims of the invention A two-digit angle transducer | code containing a rectangular: pulse generator connected through a serially connected frequency divider and a filter to the inputs of the exact and coarse phase shifters interconnected, the outputs of which are connected to the corresponding exact and coarse bursts, one of the outputs of frequency divider I is connected to the inputs of the formers of the exact and coarse readings, the output of the clock generator is connected to the sync a phase-shifting precision pulse input amplifier, different; In order to simplify and improve the accuracy of the converter, a trigger and AND and OR elements are introduced in it. And the first input of the AND element is connected to the square-wave generator, and the output - with the synchronizing input of the coarse-phase phase pulse amplifier, the output of which is connected to the first input | a trigger whose input is connected to the jc output of a precise reference generator; output - with the first input of the OR element, the second input of which is connected to another frequency divider; the output of the element IL And is connected to the second input of the element. And .. € ./. Xz -Lj -a "Ftfj  . // I // m lizn To od TO 3 z zniirz3- r: IL, ZL  r r -12 ni PNG / W X a .OR 2. / FIG. 2