SU855680A1 - Electromechanical integrator - Google Patents

Description

(54) ELECTROMECHANICAL INTEGRATOR

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The invention relates to electromechanical automation devices and can be used for automatic control systems for moving objects and for automating production processes.

Known electromechanical integrator, having in its composition electric motor ti3.

Odiako due to the complexity and cumbersome use of this device for the above purpose is ineffective. .

Also known is an electromechanical integrator, an electronic amplifier consisting of them, an asynchronous micromotor executive, a reduction gearbox and an inductive position sensor, the plunger of which is connected via a gearbox to the motor shaft. The output voltage of the inductive sensor is proportional to the movement of the plunger, and hence the angle of rotation 8 of the actuator motor 2.

The disadvantage of this electromechanical integrator is the relative complexity of the design and the limited angle of rotation of the position sensor, which leads to a limitation of the integration time, since the integration occurs only as long as the position sensor is operating in the linear zone.

The closest in technical essence to the invention is an electromechanical integrator comprising a torque motor, an angle sensor, a gearbox and a bellows embedded in a sealed enclosure. The input signal is applied to the torque motor control winding.

The disadvantage of this electromechanical integrator is the limited integration time.

The purpose of the invention is to increase the integration time.

Claims (3)

The goal is achieved in that an electromechanical integrator containing an inductor-type motor, the primary winding of which is connected to a power source via a phase-shifting capacitor, has a phase detector, a pulse shaper, a counter, and a code-voltage converter connected in series with the control input of the phase detector connected to the secondary winding of the inductor-type electric motor, which additionally includes a smoothing capacitor, and the output a power source connected to the reference voltage input of the phase detector. FIG. 1 is a block diagram of an electromechanical integrator; FIG. 2 - diagrams explaining the work of the integrator. The proposed electromechanical integrator contains primary, for example, two-phase windings 1 and 2 (Fig. 1) shifted relative to each other by 90 and connected to the power source 3 and the power source 4 of the control voltage. The phase shifting capacitor 5 serves to shift the phase of the excitation voltage by 90 electrical degrees. The secondary winding 6 of the motor is closed to a smoothing capacitor 7, selected from the condition of resonance. The gear rotor 8 of the motor windings does not have and serves to modulate the magnetic field. The secondary winding b, carrying information about the rotation angle of the rotor, is connected to the amplifier-converter device 9. Phase detector 10 includes a phase detector 10, the reference input of the second is connected to the power source 3, and the output is connected to the input of the pulse former 11. The output of the pulse shaper 11 is connected to the input of a counter 12, the output of which is connected to the input of the code-voltage converter 13. The operation of the electromechanical integrator is carried out as follows. When applying control voltage to winding 1 from source 4, and winding 2 to supply voltage from source 3 shifted by 90 electrical degrees relative to the control voltage, attached to the rotor 8 engine. The rotor 8 rotates, as a result of which the phase of the voltage of the secondary winding b is changed relative to the supply voltage. The frequency of the phase change is determined by the toothed division of the rotor 8. The output of the phase detector 10 is a voltage with a period determined by the toothed division of the rotor. From this voltage, pulses of positive and negative polarities are formed by means of a pulse former 11. These pulses are counted by a reversible counter. Inverter 13 code-voltage converts the code recorded in counter 12 to a voltage proportional to the number of incoming pulses. When the sign of the control voltage on the motor winding 1 changes, the motor rotates in the opposite direction, which causes a change in the order of alternation of positive and negative pulses of the driver 11. In this case, the sign of the voltage at the output of the code-voltage converter 13 changes. The maximum integration time of the proposed electromechanical integrator is determined by the capacity of the counter 12 and it can be made of a sufficiently large value. This embodiment of the electromechanical integrator avoids the need for an independent angle or position sensor, since the output signal proportional to the angle P0, the rotor gate, is taken directly from the secondary winding of the torque motor. This makes it possible to simplify the design, reduce the weight and dimensions of the device. The reduction of the rotation angle in the proposed electromechanical integrator is achieved due to the properties of the induction motor, which uses one of the highest spatial harmonics of the magnetic field as the working magnetic field. This makes it possible to use electromagnetic reduction to reduce the speed and angle of rotation and to give up the mechanical gearbox, thereby simplifying the electromechanical integrator and reducing its weight and dimensions. Replacing an electromechanical angle sensor with a limited rotation angle to the sensor formed by one of the windings of the (secondary) torque motor and an additional electronic unit eliminates another inherent disadvantage in the limited integration time, since in the proposed device the integration time is limited only by the capacity of the pulse counter, and it can be made large enough. Claims of the invention An electromechanical integrator comprising an inductor-type motor, the primary winding of which is connected to a power source via. Phase-shifting capacitor, characterized in that, in order to increase the time, a phase detector, a pulse shaper, a counter and a voltage converter are connected in series with the control input of the phase detector connected to the secondary winding of the inductor-type motor, in parallel with which the additionally inserted a smoothing capacitor, and the output of the power source is connected to the input of the reference voltage of the phase detector. Sources of information taken into account in the examination 1. US patent 3201669, cl. 318-30 ,. publish 1965. 2. Armeysky E.V. and others. Electric micromachines, M., Higher school, 1975, 3. Authors certificate of the USSR 179019, cl. G About G 7/188, 1966 (prototype). .f f (tz2 t