RU1771056C - Thyratron motor - Google Patents

Abstract

Usage: in electric drives tape mechanisms of autonomous sound recording devices. SUBSTANCE: additional switches 12-17, resistors 18-23 and diodes 24-29 are introduced into the valve motor. These elements are divided into two groups. Additional keys of each group are included between one of the keys of the anode group of the frequency converter 10 in the winding circuit of the electromechanical converter with an inductor and a control input of the corresponding keys of the anode and cathode groups of the frequency converter 10. The control inputs of the additional keys are connected through the introduction of resistors and diodes to the outputs of the rotor position signal generator 11. Result in valve

Description

The invention relates to electrical engineering and can be used in electric drives of tape drives of autonomous sound recording devices.

A valve electric motor is known, comprising an electromechanical converter with a permanent magnet inductor, a half-wave frequency converter, a signal generator of the position of the rotor of the valve electric motor, the multi-channel output of which is connected to the input of the frequency converter 1.

In this electric motor, the switching of the keys of the frequency converter takes place directly from the signals of the rotor position signal generator, based on the sensitive elements located on the stator of the electric motor and the signal element located on the rotor. The use of a half-wave frequency converter leads to the underutilization of the electromechanical converter, which increases its size and power consumption. Thus, a disadvantage of the known engine is its low efficiency, low overall dimensions and copper utilization.

Valve motors are known that comprise each electromechanical converter, a half-wave frequency converter, the control inputs of which are connected to the signal conditioner of the rotor 2 position.

A feature of these engines is the implementation of the signal conditioner of the rotor position of the electro-mechanical converter, which uses the electrical signals of the electromechanical converter itself as primary information, i.e. EMF rotation. Their common disadvantage is low efficiency, increased weight and size indicators,

The closest technical solution is a valve motor containing an electromechanical converter with a permanent magnet inductor, each section of the t-section root winding of which is the first output

connected to the combined power terminals of the corresponding keys of the anode and cathode groups of keys of the bridge frequency converter, the second conclusions

sections of the root winding are combined, a signal conditioner of the rotor position of the electromechanical transducer with m-outputs Z.

This valve motor

has a bridge frequency converter that allows the root winding to be supplied with voltage of any polarity, which increases its efficiency. However, a different number of outputs of the shaper of signals of the rotor position signal

and power keys of the frequency converter requires complication of the motor due to the additional use of the rotor position decoder signals or any other logic unit that performs these

functions. The use of low-voltage power sources up to 1.5 volts for stand-alone sound reproducing apparatus eliminates the use of the existing base of logic circuits on which a decoder is implemented in a known motor.

The aim of the present invention is to expand the scope.

This goal is achieved in that in a valve electric motor containing an electromechanical converter with a permanent magnet inductor,

each section of the m-section root winding of which the first output is connected to the combined power terminals of the corresponding keys of the anode and cathode groups of keys of the bridge frequency converter, the second conclusions of the sections of the root winding are combined, the signal generator of the rotor position of the electromechanical converter with m-outputs, 2 tons of additional

keys, 2 m resistors, 2 m diodes, while additional keys, introduced resistors and diodes are divided into two groups, the k-th and n-th additional keys of the first and second groups, respectively, are connected to the control input 1- by the first power terminals th key of the anode key group

the frequency converter, the second power terminals of the k-ro and p-th additional keys of the mentioned groups are connected to the control inputs of the (i + 1) th and (I + 2}-th keys of the cathode group of the frequency converters, the control input The k-ro of the additional key of the first group is connected through the k-th resistor of the first group to the l-th output and through the k-th diode connected in opposition to the conductivity of the control transition k-ro of the additional key of the first group, to ( 1 + 2) -th output of the rotor position signal generator, control input of the pth supplement the second key of the second group through the n-th resistor of the second group is connected to the (H2) -th output and through the n-th diode of the second group, turned on counter to the conductivity of the control transition of the p-th additional key of the second group, to (I + 1 ) -th output of the rotor position signal generator, where kn

Figure 1 presents a functional diagram of a valve motor; figure 2 - examples of additional keys; in Fig.Z - signal diagrams at the outputs of the functional nodes.

The valve electric motor contains an electromechanical converter with an inductor (not shown in the figure) with permanent magnets. Each section of the 1,2,3 m-section root winding of the electromechanical converter is connected to the combined power terminals of the corresponding keys of the anode (4-6) and cathode (7-9) key groups of the bridge frequency converter 10 by a first output. For example, section 1 is connected to the terminals of the keys 4 and 7. The second conclusions of the root winding sections 1, 2, 3 are combined. The valve electric motor also comprises a signal conditioner 11 of the rotor position of the electromechanical converter with m outputs. In addition, 2 m additional switches 12-17, 2 m resistors 18-23, 2 m diodes 24-29 were introduced into the valve motor. Additional keys, introduced resistors and diodes are divided into two groups. The K-1 and nth additional keys 12 and 13 are connected by the first power terminals to the control input of the {th key 4 of the anode key group of the frequency converter 10. The second power leads of k-ro and the nth additional keys 12 and 13 are connected to the control inputs of the (I + 1) th and (i + 2) th keys of the cathode group of the frequency converter 10, respectively.

The control input k-ro of the additional key 12 of the first group is connected through

the k-th resistor 18 of the first group to the i-th output 30 and through the k-th diode 29, connected counter to the conductivity of the control transition k-ro of the additional key 12 of the first group, to the (+2) -th output 31 of the driver 11 rotor position signals. The control input of the p-th additional key 13 of the second group is connected to the (I + 2) -th output 31 through the n-th resistor 22 of the second group and through the n-th diode 26 of the second group, turned on in relation to the control transition p- th additional key 13 of the second group, to the (I + 1} -th output 32 of the driver 11 of the rotor position signals, where kn m. The control input of the additional key 14 (16) is connected through a resistor 20 (23) to terminal 32 (31) and through the diode 25 (27) to the output 30 (32) of the former 11.

The control input of the additional key 15 (17) is connected through the resistor 19 (21) to the output 30 (32) and through the diode 28 (29) to the output 31 (30) of the driver 11. Additional keys can be implemented according to one of the schemes presented on Figures 1 and 2. The rotor position signal generator 11 of the electromechanical converter is, for example, an electronic unit that processes information from the emf of rotation. In this case, the shaper 11 can be performed similarly (2, 3) or as shown in figure 1 in the form of comparators 33-35, the inputs of which are connected to the first outputs of sections 1, 2, 3, respectively. If the signal driver is implemented using sensitive and signal elements, then it can be implemented by analogy with (1).

Valve motor operates as follows.

When the motor rotates, the shaper 11 of the rotor position signals at its outputs 30, 31, 32 generates the logic signals shown in FIG. If a three-section electromechanical converter is used, a signal of 180 electrical degrees is generated at each output. At each subsequent output, the signal is offset from the previous one by 120 zl. degrees. When using the former 11 shown in FIG. 1, the described signals are generated at the moment of changing the sign of the rotation EMF at the outputs of the comparators 33, 34, 35. In order to ensure periodic switching of sections 1-3 of the root winding, it is necessary to turn on the keys 4-9 in accordance with the operation diagram shown in Fig. Z. Let’s see how this happens.

At the 1st inter-switching (MK) interval, output 30 shows the level of a logical unit. According to the control transition of the additional switch 12, current flows through the resistor 18. Key 12 opens and closes the control inputs to the left through its power circuit; 4 and 8. Since these keys are of different conductivity, a control current flows through the control inputs through the power circuit of the key 12. The keys 4, 8 are open on the 1st MK interval. The current flows through sections 1, 2. When switching to the 2nd MK interval, the output level 32 of shaper 11 sets the logic zero level. The voltage at the input of switch 12 will be bypassed by diode 29 and switch 12 will close. At the same time the key will open

13, because a potential of a logic zero through a resistor 22 is applied to its control input. The power circuit of the key 13 is closed by the control inputs of the keys 4 and 9. The keys 4, 9 open and connect sections 1.3 to the power source. Thus, when switching to the 2nd MK interval, key 8 is closed and key 9 is opened. Current in disconnected section 2 will continue to flow through section 1.

When switching to the 3rd MK, the interval at the output 31 of the shaper 11 is at the vitss level of the logical unit. Under the influence of this voltage supplied through the diode 26 to the control input of the key 13, the key 13 is closed. At the same time the key will open

14, because the voltage of a logical unit And 34 is supplied to its input through a resistor 20, Keys 5 and 9 are turned on at the 3rd MK interval. Turning on these keys will ensure that current flows through sections 2, 3, Connecting the sections to the power source in series ensures the creation of a rotating magnetic field and rotation of the rotor of the electric motor. The keys 15, 16, 17 work in the same way as the keys 12, 13, 14.

Thus, the introduction of additional switches 12-17 made it possible to ensure switching of the power switches 4-9 each time the voltage of the driver 11 of the rotor position signals changes, i.e. and when a logical unit appears and a logical zero occurs. This, in turn, made it possible to dispense with additional decoders and use an electric motor with a supply voltage of up to 1.5 volts, which simplifies the engine and expands

scope of application.

Claims (1)

SUMMARY OF THE INVENTION A valve motor comprising an electromechanical converter with a permanent magnet inductor, each section of the m-section root winding of which the first output is connected to the combined power terminals of the corresponding keys of the anode and cathode groups of keys of the bridge frequency converter, the second conclusions of the sections of the root winding are combined, the signal generator of the rotor position of the electromechanical converter with m outputs, characterized in that In order to expand the scope of application, 2 m additional keys, 2 m resistors, 2 m diodes are introduced into it, while additional keys, introduced resistors and diodes are divided into two groups, the kth and pth additional keys of the first and second groups respectively the first power pins connected to the control the input of the 1st key of the anode key group frequency inverters, second power the outputs of the k-ro and l-th additional keys of the mentioned groups are connected to the control inputs of the {I + 1) th and (J + 2) th keys of the cathode group of the frequency converter, the control input k-ro of the additional key of the first group connected through the k-th resistor of the first group to the i-th output and through the k-th diode connected in opposite to the conductivity of the control transition k-ro additional key of the first group, to the (f +2) -th output of the rotor position signal generator, the control input of the l-th additional key of the second group is connected to (1 + 2) to the output and through the n-th diode of the second group, turned on counter to the control transition of the p-th additional key of the second group, to the (1 + 1) -th output of the signal generator of the rotor position, where k l t.