SU1252905A1 - Device for controlling electromagnetic motor - Google Patents

Abstract

The invention relates to the control of electric machines and can be used, in particular, in electromagnetic hammers. The purpose of the isobi-reteni is to expand the functionality of the device. It contains a generator of sinusoidal oscillations 1, through a capacitor 2 connected to the O5 winding 3 of the engine, the second output of which is connected to the second output of the pulse generator through a resistor 4. A winding source 3 is connected to winding 3 via key 5. The resistor 4 is connected to the input of the threshold element 6 connected to the control input of the key 5. Changing the trigger level of the threshold element by the driving voltage allows you to adjust the amplitude and impact energy of the hammer or the speed of the electromagnetic motor, thus expanding the functional capabilities. 2 Il. from € (L 3 JV Yu; o

Description

one

The invention relates to the control of electric machines and can be used in an electric drive with an electromagnetic motor, in particular, in electromagnetic hammers.

The purpose of the invention is to expand the functionality.

Figure 1 shows the functional diagram of the device; figure 2 - the sequence diagram of his work.

The device contains a generator 1 of sinusoidal oscillations through a capacitor 2 connected to the winding 3 of an electric motor, the second output of which is connected through a resistor 4 to the second output of the generator 1 of pulses. A winding source 3 is connected to winding 3 via key 5. The resistor 4 is connected to the input of the threshold element 6 connected to the control input of the key 5.

The cyclogram shows the power supply voltage pulses 7 on the winding 3 and the high frequency voltage pulses 8, taken from the resistor 4.

The device works as follows.

When the key 5 is closed, the main pulse 7 of the voltage 7 is applied to the winding 3 and the measles begin to move, having done useful work. At the end of the pulse 7, the generator 1 begins to produce additional pulses 8, At this time the measles of the electromagnetic engine begins to move in the opposite direction, for example, under the action of a return spring. The generator 1 is loaded by a series-connected chain of capacitor 2, windings 3, forming a series resonant circuit, and a resistor 4, from which pulses 8 are fed to a threshold device 6. Capacitor 2 operates as an element of the resonant circuit and serves to prevent winding 3 supply voltage from passing across the circuit: generator 1 - resistor 4. Thus, over the entire range of motion of the core, additional pulses 8 are obtained, varying in amplitude depending on the position of the core.

At a certain amplitude of the additional pulses, the threshold device 6 sends out a pulse of control 1 to the key 5, the main impulse 7 is fed to the winding of the electromagnetic motor

p, additional pulses 8 from the generator 1-stop.

The cycle of operation is repeated. 5 The effective value of the signal power of the pulse generator is 0.5% of the power of the electromagnetic motor.

As the threshold device 6, an analog microcircuit is used, which assigns the signal to control key 5 depending on the amplitude of the additional pulses 8, the last 15 characterizes the position of the core of the electromagnetic hammer. In the course of the experiment, the triggering of the threshold device is tuned to such an amplitude of additional pulses, which corresponds to the core position during magnetic magnetic equilibrium. hammer systems - measles begins to move under the action of electromagnetic forces in the opposite direction.

25,

The change in the level of operation of the threshold element by the driving voltage makes it possible to regulate the amplitude and energy of hammer blows or the speed 30 of the movement of the electromagnetic motor, thus the functional capabilities are expanded.

In addition to that, compared with the prototype, the efficiency also increases due to the jj reduction in the power of the pulse generator.

Claims (1)

Invention Formula 40 A device for controlling an electromagnetic motor, containing a voltage source connected to the motor winding via a key, and a generator of sinusoidal oscillations associated with the motor winding, so that, in order to expand its functionality by increasing accuracy and expansion of the adjustment range, a threshold element, a resistor and a capacitor are inserted into the device; 5Q forms a resonant circuit with the winding and is connected in series with the resistor, a sinusoidal oscillator and about, - by the coil, and the threshold element is connected to the resistor by the input, and the output to the control to the key input circuit. iiii imn. Editor P.Kossey Compiled by V. Alfimov Tehred V. Kadar Proofreader S. Cherni Order 4629/55 Circulation 631 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, st. Project, 4 Fi.2