SU1667251A1 - Shaft rotation angle-to-digit converter - Google Patents

Abstract

The invention relates to automation and computer technology and can be used in automatic control and monitoring systems. The aim of the invention is to expand the field of application of the converter by providing the possibility of an automatic shift of the origin. The shaft rotation angle converter into a code contains a digital sensor 1 position, reference setpoint 2, memory register 3, first adder 4, code inverter 5, second adder 6. Entering code inverter 5 and second adder 6 into a shaft rotation angle converter into code allowed get a simple device with accurate and fast installation of a new reference point, i.e. shift the working range without reducing it. 2 Il.

Description

The invention relates to automation and computer engineering and may find application in automatic control and monitoring systems.

The aim of the invention is to expand the scope by providing the ability to automatically offset the reference point.

In FIG. 1 shows a block diagram of a converter of the angle of rotation of the shaft into a code: in FIG. 2 - diagrams of the output signals.

The converter of the angle of rotation of the shaft into a code contains a digital position sensor 1, a reference unit 2, a memory register 3, a first adder 4, a code inverter 5, and a second adder 6.

The Converter angle of rotation of the shaft in the code works as follows.

In the initial state, the shaft of the sensor 1 is located at an arbitrary point b0 (Fig. 2, the position of the shaft </ c, corresponding to the code b0 in the converter range, diagram 1: the transition point O ^ N of the converter corresponds to the position of the shaft ugg)

According to the recording signal received at the installation input of the memory register 3 from the reference setter 2, the code for the initial position of the shaft 'него запис is written into it. which arrives at the first inputs of the memory register 3 from the outputs of the sensor 1 and is stored in the memory register 3 until the next overwrite.

The code of the initial position of the shaft 'and _o from the outputs of the memory register 3 is supplied to the first inputs of the first adder 4, where it is added to the specified (initial) code a, which enters the second inputs of the first adder 4 from the outputs of the reference unit 2 of the reference point.

At the outputs of the first adder 4 odds miruetsya code (L _of a) correction (correction), which receives inputs from the inverter 5 code, with which the outputs (as ~ Lq) is supplied to the second inputs of the second adder 6.

At the first inputs of the second adder 6, a code of the current values of the signal of the shaft position of the sensor 1 is supplied, from which the correction code generated in the first adder 4 is subtracted.

The output signal of the second adder 6, which is the corrected sensor code 1, counted in the measuring range, the beginning of which is set in the reference clock 2 by the number a (Fig. 2. the beginning of a new range - plot 2, the measurements correspond to the position of the shaft v / b, in this the range to the position of the shaft <rl corresponds to the code of the number a), it is output to the converter

In the initial state, the first inputs of adder 6 are supplied with the code L0. on the second inputs - correction code (a-bo). Thus, at the output of adder 6, a code of the number a is generated (Fig. 2, the position of the shaft φ \ corresponds to the number b0 in the range of the angle-code converter and the number a to the new range of the sensor 1 code-plot 2), which corresponds to the shift of the beginning of the range from the point <rg to the point <rnAn output of the converter is formed in the position range relative to the recording point from (s) to (N-1-a) a unique position code that does not have gaps (jumps) at the transition points of the sensor from the number (Ν-1) to 0 (or from O to the number (Ν-1)), where N is the capacitance of the sensor.

Using the converter of the angle of rotation of the shaft into a code with automatic setting of the reference point allows you to get a simple device with accurate and quick installation of a new reference point, which allows you to more accurately and simply set the reference point (shift the working range) at any point in the range of the angle - code converter without its abbreviation.

Claims (1)

Claim A shaft angle converter to a code containing a digital position sensor. a memory register, a reference setter, the group of outputs of which is connected to the first group of inputs of the first adder, which follows. what. In order to expand the scope of application of the converter by providing the possibility of automatic offset of the origin, a code inverter and a second adder are introduced into it. the group of outputs of the digital position sensor is connected to the first group of inputs of the second adder and the information inputs of the memory register, the installation path 8 of which is connected to the output of the reference unit, and the group of outputs is connected to the second group of inputs of the first adder, the group of outputs of which is connected to the second group of inputs through the code inverter the second adder, the group of outputs of which is the output of the converter, the input of the reference dial is connected to the source of the zero-setting command.