CS276927B6 - Control system for realization of mechanical tuning - Google Patents

Abstract

The solution concerns a control system /1/, which is intended for the implementation of continuous tuning of a torsionally oscillating mechanical system during its operation and consists of a control and operating subsystem /2,3/, while the control subsystem /2/ consists of an inductive sensor /4/, a portable device /5/ and a microprocessor /6/.

Description

1 CS 276927 B6

Control system for realization of mechanical tuning tuning

Technical field

The control system for the realization of the smooth tuning of the torsion-free mechanical system during its operation is included in the area of measuring, evaluation and control technology.

BACKGROUND OF THE INVENTION In view of the excessive torsional oscillation of the mechanical assembly due to its prior tuning / tuning method, it is proposed to realize the continuous tuning of the torsionally oscillating mechanical system while it is running. All tuning torsional oscillation systems currently performed are interferences with its dynamics, i.e., the stiffness, damping, or mass parameters of some of its members for each other, that is, in the time before its introduction. Then the system works with tuned characteristic features, which are still and unchanged during operation, of course if we do not take into account the aging and fatigue of the flexible members often used in flexible shaft couplings. By aging and fatigue, the flexible shaft clutch gradually loses its ground-positive properties, as a result of which a pre-tuned mechanical assembly begins to become disgruntled. This implies that tuning the torsion-damping mechanical system would be poorly carried out in a new way - a way of smoothly tuning the system while it is running through a suitable control system.

SUMMARY OF THE INVENTION

The above mentioned drawbacks are eliminated by the proposed control system for the realization of a continuous mechanical system tuning, consisting of the control and control subsystem. It is an object of the present invention that a control subsystem consisting of an inductive sensor, a transfer device and a microprocessor is able to control the pneumatic elastic shaft coupling to ensure smooth torsion of the torsional oscillating mechanical system while the inductive sensor itself is suitable located in the pneumatic junction.

By regulating the pneumatic clutch, i.e. by regulating the overpressure medium therein, by a control system designed therewith, we create a closed-loop control circuit with poor bonding, thereby permitting fluctuation, thus adapting the stiffness and damping parameters of the coupler to; unsafe vibrations during operation mode. Based on the continuous adjustment of the dynamic properties of the pneumatic clutch to the dynamic properties of the self-oscillating mechanical system, the basic principle of the smooth tuning of a given system is also based on the proposed control system.

The main advantage of this solution is that the tuning of the torsion-oscillating mechanical system is realized while it is running on CS 276927 B6 2 t, different from the current method of tuning the mechanical systems pre-tuned by their tuning. Another advantage is that the electrical signal obtained by the inductive sensor characterizing the velocity oscillation of the mechanical system is not influenced by the properties of other parts of the system, such as in the determination of torsional vibration by means of strain gauges attached to the rotating shaft or when inserting a torsion bar into the shaft system of the system and the like.

Overview of drawings in the drawing

In the accompanying drawing, FIG. 1 schematically illustrates, within a block structure, a control system for continuously tuning a torsional oscillating mechanical system, and FIG. 2 shows a schematic control of the pneumatic elastic shaft coupling itself tangentially. An embodiment of the invention

The control system 1 for performing continuous tuning of the torsion-free mechanical system consists of a control subsystem 2 and a control subsystem 3. The control subsystem 2 is characterized by a microprocessor 6, an inductive sensor 4, integrated in the flexible hollow body 10 of the pneumatic clutch 11, and a portable / contact or non-contacting device 5 of the electrical signal which is located on the rotating shaft of the mechanical system. The control subsystem 2 consists of an electromagnetic distributor 9 which is connected to the gas medium reservoir 7 via a reduction valve 8. The microprocessor 6, which forms the basic control component of the entire control system 1, by switching the electromagnetic actuator 9 in order to move it, thereby providing a continuous control of the pneumatic clutch itself, while the mechanical system is running. increasing or reducing the overpressure of the gaseous medium in its flexible hollow bodies 10.

When operating a mechanical system in an unfavorable operating mode area, where the frequency of the transmitted load is equal to or close to the frequency of the actual oscillation. of the system, that is to say that the system has reached resonant oscillations or oscillations near the resonance state, there is a dangerous torsion vibration of the entire mechanical system. The magnitude of the dangerous torsional oscillation of the mechanical system is currently sensed by an inductive transducer 4 built into the most suitable location of the coupling. By locating the inductive sensor in the flexible hollow body 10 of the pneumatic coupler 11, the momentary magnitude of the torsional vibration of the mechanical system is sensed directly. The electrical sensor obtained by this method is proportional to the current torsional vibration size of the system. The electrical signal obtained by the inductive sensor 4 is transmitted to the microprocessor 6 via a portable device 5 for evaluation. By re-evaluating the applied electrical signaling circuit 6, the electromagnetic distributor 9 is switched into the supply P or discharge position T, thereby changing the pressure of the gaseous medium in the flexible hollow bodies 10 by the pneumatic coupling 11. By continuously changing the overpressure of the gaseous medium in the pneumatic coupling, we continuously change its basic dynamic properties

Claims (2)

PATENT CLAIMS A control system for realizing continuous tuning of a mechanical system, consisting of a control subsystem and a control subsystem, characterized in that the control subsystem (2) is formed by an inductive sensor (4), the electrical signal of which is fed to a microprocessor via a portable device (5). / 6 /. 2. A control system for realizing the continuous tuning of the mechanical system, according to point 1, characterized in that the inductive sensor / 4 / is built in a straight flexible hollow body / 10 / of the pneumatic coupling / 11 /.