SU395905A1 - POSITION MECHANISM MANAGEMENT SYSTEM - Google Patents

Description

The invention relates to the control of positioning mechanisms and can be used, for example, to precisely stop and control in a predetermined position of the rotary column mechanism of the ipeaiKTOpa transfer box on fast neutrons. There are known control systems for positioning mechanisms with two groups of hovering points, one of which is driven only when moving forward, and the other when moving backward, with a one-sided approach without moving over the point of the rest, containing a reversible electric motor with its transfer to a small one. speed for precise stopping, fixed W-shaped inductance sensors and ferromagnetic measles moving in conjunction with the mechanism. In such systems, a signal from the engine at low speed is received from one sensor, from another sensor - the subsequent signal of an exact stop of the mechanism. However, since the known systems of each point of guidance have two sensors, the installation of them is often unacceptable under the conditions of the arrangement of the mechanism. In addition, there is a significant stop area. So for ZON.YE exact stop of ± 1, in order to exclude the possibility of issuing spurious signals, the width of the core and the width of the sensor rod must be no more than 0.7 mm, which is constructive and impracticable. The aim of the invention is to simplify the system, increasing reliability and pointing accuracy. For this, the windings are located on the extreme cores of the U-shaped sensor and are connected to bridge circuits, and the length of the measles is divided into four sections of different eroflit so that the extreme sections behind the magnetic conductor of one sensor winding, one of the middle sections closes the magnetic circuits of the other winding, and the second of the middle sections closes the magnetic cores, the two windings of the sensor simultaneously, the length of the middle sections being equal to the required zone of exact stop, and the length of the extreme sections of the core is not less than the stopping distance of the mechanism. The drawing shows a schematic design cor. The anchor contains the end sections I, 2 and the middle sections 3, 4, all of which are fixed on a common sheet of non-magnetic material. The system works as follows. During the movement of the Epe mechanism and at the approach of the rotary column, the middle and left rods of the W-image of the Ogo sensor are taken at the same speed as the extreme point / core under consideration.

The inductance of the motor is increased, the balance of the bridge circuit is disturbed and the threshold relay device is activated, the contacts of which (Switch the motor to the deceleration mode with subsequent transfer to low speed.

The length of the marginal segment 1 is determined by the braking path, depending on the properties of the electric drive and the inertia of the moving masses of mechjeism.

Upon further movement of the mechanism at low speed, the middle sections of the 1KO | M 3 core close all sensor rods, the inductance of the second sensor winding increases, the second threshold relay device operates. Turning on two threshold devices simultaneously causes the motor to turn off, the mechanism stops in the zone of tapping the corresponding sensor.

In case of overrun of the mechanism beyond the exact stop zone of the middle section 4, the middle and right rods of the sensor are closed, and the middle and left rods are opened. This corresponds to the disconnection of the first threshold device and keeping the second state (the threshold relay device) on, as a result of which a signal is generated that the mechanism overshoots beyond the precise guidance zone. This signal can later be used to command the system to reverse and re-direct it. mechanism at the desired point of guidance.

When the mechanism is moved back to another group of points of guidance, the same operations as for the above sections are performed by closing the following cortex areas of the sensor rods.

1. Plot / - motor deceleration and subsequent transfer to low speed.

2. Section 4 - exact stop of the mechanism in the zone of accurate guidance.

3. Part 3 - issuing a signal about the overrun of the mechanism beyond the zone of precise guidance.

Thus, using one inductive sensor, included: according to the double bridge scheme, at the expense of the core of the special form, we and the logic circuit for processing normal signals; output relay circuits and the forward and backward signal can be received low speed, accurate aiming, control accurate aiming.

Subject matter

The control system of the positional mechanism with two groups of drive points, one of which is driven only when moving forward, and the other only when moving backward, containing a reversible electric motor, fixed W-shaped inducible sensors and ferromagnetic measles moving together with a mechanism that differs so that, in order to simplify the system, 1po; higher reliability and accuracy of pointing, the windings are placed on the extreme cores of the W-shaped sensor and are included in bridge circuits, and the measles in the long section n into four sections of different profiles in such a way that the extreme sections close the magnetic conductor of one sensor winding, one of the middle sections closes the magnetic current of the other winding, and the second of the middle sections closes the magnetic conductors of the other winding, and the second of the middle sections closes the magnetic conductors of the two windings of the sensor simultaneously, the length of the middle sections is equal to the required zone of exact stop, and the length of the extreme sections of the core is not less than the stopping distance of mechanism.