SU386234A1 - DEVICE FOR THE CONTROL OF DEAD MOVEMENT OF MECHANISMS - Google Patents

Description

I

The invention relates to a measurement technique and can be used to measure angular and linear errors of mechanisms.

A device for controlling the dead stroke of mechanisms is known, which contains sensors of high-speed and low-speed shafts that are connected in the process of control with the corresponding shafts of the monitored mechanism.

The proposed device differs from that known in that the sensors are made pulsed, the device is equipped with a drive motor with a control circuit connected to the high-speed shaft of the monitored mechanism, a load device connected to the low-speed shaft of the monitored mechanism, a key, a reversible counting circuit and a switch, the input of which is connected to the sensor output of the low-speed shaft, the switch outputs are connected to the key and to the zero thickness of the reversible counting circuit, the counting input of which is connected to you via a key Odom sensor speed shaft and u-ins control mode of operation reversing the counting circuit coupled to respective outputs of the sensor is reversed speed shaft or reversing the drive motor output control circuit.

Such an embodiment of the device allows

improve the accuracy and performance of controls.

Pa drawing shows a block diagram of the proposed device.

The device contains pulse sensors / and 2 high-speed and low-speed shafts of the monitored mechanism 5, a drive motor 4 with a control circuit connected to the high-speed shaft of the mechanism 5, a load device 5, a key 6, a reversible counting circuit 7, the counting input of which is connected to the output through a key sensor 1 of the high-speed shaft, and the control bus for the operation of the reversible counting circuit is connected

with the corresponding reversing outputs of the sensor 1 or with the reversing outputs of the drive motor control circuit, and the switch 5, the input of which is connected to the output of the sensor 2 of the low-speed shaft, and the outputs connected to the key and the zero bus of the counting circuit.

The device works as follows. Include drive motor, rotating high-speed shaft controlled

mechanism 3 with sensor 1 in the forward direction. The sensor / receives electrical pulses that determine the angular movement of the high-speed shaft of the mechanism 3. These pulses do not pass to the reversible counting circuit 7, since the key 6 is closed and opens only when the low-speed shaft is in its original position, controlled by the sensor 2, sending an electric impulse, opening through switch 8 key. Electrical impulses produced by the sensor L are fed to the counting input of the reversing counting circuit. The engine 4 continues to rotate the mechanism 5 in the same direction by an amount several times the calculated or estimated value of the dead stroke, but it does not bring the low-speed shaft to the next controlled position. Then the engine is reversed. A reversible counting circuit for incoming “pulses from sensor 1” subtracts from the sum of pulses accumulated during the forward rotation of the engine. The reading will take place until the low-speed shaft takes up its original initial position, and the sensor 2 will generate a signal, which through the switch 8 will close the key 6. A number proportional to the dead stroke of the monitored mechanism will remain on the scoreboard.

After removing the countdown from the scoreboard, the motion is reversed to the right. When the low-speed shaft passes the initial position for the third time, the impulse of the sensor 2 through the electronic switch resets the counting circuit to zero.

Continuing in the same direction, approach the next test position, at which a pulse arrives from sensor 2, which opens the key of the counting circuit through the switch. Further, the device works in a similar way.

Subject invention

A device for controlling the dead stroke of mechanisms, comprising sensors of high-speed and low-speed shafts, which are connected during the control with the corresponding shafts of the monitored mechanism, characterized in that, in order to increase the accuracy and performance of the control, the sensors are made pulsed, the device is equipped with a drive motor with a control circuit, connected to the high-speed shaft of the controlled mechanism, load device connected to the low-speed shaft of the controlled mechanism, key, reversible

the counting circuit and the switch, the input of which is connected to the sensor output of the low-speed shaft, the switch outputs are connected to the key and the zero reversing counting circuit, the counting input of which is connected to the high-speed shaft sensor through the key, and the reverse current counting circuit BINS with the corresponding reversing outputs of the high-speed shaft sensor or with reversing

drive control circuit outputs.