SU1226039A1 - Angle-data transmitter - Google Patents

Abstract

The invention relates to measurement technology and can be used to improve the accuracy of measuring the angular movements of objects by eliminating information loss during an emergency shutdown of the supply voltage of the angle sensor. The angle sensor includes a housing with a lid. A cogged stator with excitation and reading windings and a gear rotor placed on the sensor shaft are fastened in the housing. An electromagnet with a winding and a spring-loaded spring is attached to the casing. The armature forms a split clutch with a gear rotor for fixing the position of the gear rotor in the event of an emergency disconnection of the sensor power supply and winding of the electromagnet. The sensor rotor is connected to the object to be monitored via an additional shaft, on which the sleeve is rigidly fixed and the drum mounted for rotation. The drum is connected to the serrated rotor and sleeve by means of flat helical springs having counter winding. The rotation of the shaft is transmitted to the sensor rotor via drivers, protrusions and springs. In this case, a signal sequence appears at the sensor output. When the supply voltage is disconnected, the measles is pressed against the rotor and fixes its angular positions. If the object, therefore, and the shaft while continuing to rotate, the springs are tightened (depending on the direction of rotation). As a result, after the voltage has been restored, the electromagnet winding begins to be energized and the rotor is released from fixation, and due to the unwinding of the springs it comes to the angular position coordinated with the shaft position. There is no loss of information about the angular position of the object due to this, 2 Il. (Ltc tc O5 about 00 with

Description

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The invention relates to a measurement technique and can be used to measure angular movements of objects.

The purpose of the invention is to improve the accuracy of measurements by eliminating the loss of information during an emergency shutdown of the sensor supply voltage.

Fig. 1 shows the construction of an angle sensor; 2 shows timing diagrams explaining the operation of the sensor (the angle of rotation of the test object; d is the angle of rotation of the gear rotor; and is the waveform of signals from the sensor to the pulse shaper; F is the pulse shape at the output of the pulse shaper; S is the positional code for the output of the reverse pulse counter). I

The angle sensor includes a housing 1 with

a cover 2. A gear stator 3 with excitation and reading windings and a gear rotor 5 mounted on sensor shaft 4 is fixed in case 1. A solenoid rotor 5 is fixed in case 1 with winding 6 and spring-loaded spring 7 of sensor 8. - forms a split friction clutch with a gear rotor 5 for fixing the position of the gear rotor 5 in the event of an emergency disconnection of power from the sensor excitation windings and de-energizing the electromagnet winding 6. An additional shaft 9 for connecting the angle sensor with the object of control is mounted in the bearing supports of the cover 2 A sleeve 10 with a driver 11 is rigidly fixed on the shaft 9 and a drum 12 with a protrusion 13 in contact with the driver 11, a projection 14 in contact with a lead 15 of a gear rotor 5. The drum 12 is connected to the gear rotor 5 and the sleeve 10 by means of flat spiral springs 16 and 17, respectively. The springs 16 and 17 have an opposite winding and are fixed with the outer ends on the drum 12, and the inner ones - on the gear rotor 5 and the sleeve 10, respectively. The readings of the angle sensor are connected to a pulse shaper and a reversible counter (not shown).

The angle sensor works as follows.

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When power is connected to the excitation windings of the sensor and the winding 6 of the electromagnet, the latter operates, attracting measles 8 and releasing 5 and toothed rotor 5. When the control object is angularly displaced, additional shaft 9 rotates. 14

10 of the drum 12 and the leash 15 of the gear rotor 5 is transmitted to the next. On the sensor windings, signals appear that are formed in the pulse shaper and are registered with a reversible counter.

If at some time t, (Fig. 2), due to, for example, an emergency, the sensor is powered off, then the winding 6 of the electromagnet is de-energized and the measles 8 under the action of the spring 7 is pressed against the gear rotor 5, fixing its position. If the angular displacement of the controlled object and the rotation

25 shaft 9 in the period of power shutdown continues, then with the braked gear rotor 5 one of the coil springs 16 or 17 is twisted (depending on the direction of rotation of the shaft 9). After the restoration of power, for example, at time t (Fig. 2), the measles 8 otkhrdit from the gear rotor 5 and releases it. Gear rotor 5 under the action

,, unwinding the corresponding flat spring 16 or 17 by the moment to, comes to a position that corresponds to the angular position of the object and shaft 9 being monitored.

In the process of turning the gear rotor 5, additional signals are generated at the output of the read windings, which eliminates the loss of information about the movement of the object under test

.f emergency power off period of the sensor.

The exclusion of loss of information increases the accuracy of measurements.

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Claims (1)

Invention Formula The angle sensor, a housing, a stator with excitation and reading windings and a gear-mounted rotor mounted on the shaft, characterized in that, in order to improve accuracy, it is equipped with an electromagnet mounted in the housing with a spring-loaded shaft mounted for axial movement. and forming a split clutch with a gear rotor, an additional shaft, intended for communication with the object of control and placed coaxially with the sensor shaft, and also mounted on the additional shaft with the possibility of 2260394 The drum has two coil springs with counter wound, rigidly fixed to the additional shaft with a sleeve and two drivers connecting the sleeve with the drum and a toothed rotor, the springs attached to the outer ends of the drum and the internal ends to the sleeve and the rotor, respectively. / J .one 2 and. f A / iVN Editor O. Yurkovetska Compiled by L. Guskov Tehred N. Bonkalo Proofreader M. Samborska Order 2110/28 Draw 670 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., d./5 Production and printing company, Uzhgorod, Projecto st., 4 -AlWv Fig2