SU1730712A1 - Device for distance gear of driving shaft rotation angle - Google Patents

Abstract

The invention relates to electrical engineering and automation. The purpose of the invention is to expand the functionality by fixing the position of the Mpn drive shaft and simplifying operation. The device contains a master synchronous machine 1 with the first rotor position sensor 2, a storage element (D) 3, a comparing element 4, a second rotor position sensor 5 connected to the shaft of the executive unit, a synchronous IK trigger 8, a comparator 9, a AND-HE logic 10 and a semiconductor switch 11 with switching 12 and control 13 current inputs. The ZE 3 is connected between the outputs of the sensor 2 and the input of the comparing element 4, and the input of the ZE 3 is connected to one of the outputs of the comparator 9, to the second input of which the output of the ZE 3 is connected through the AND-NO circuit 10. Perpendicular to the stators of both machines The magnetic field of the master machine, and their amplitude is proportional to the misalignment of the shafts. The device is easy to use, it goes into operation without a jerk, which increases its reliability. 2 Il. (LSN Mn i CJ o s | y

Description

The invention relates to the field of electrical engineering and automation and can be used in following double-acting systems with valve motors of copy manipulators with a force-moment sensation.

The aim of the invention is to enhance the functionality of the device and reduce operator fatigue when working with it.

FIG. 1 is given a functional diagram of the device; 2 (a, b, c, d) are vector diagrams of magnetic fields explaining its action.

The device contains a master synchronous machine 1 with the first position sensor 2, a storage element 3, a comparison element 4, a second position sensor 5 connected to the shaft of an executive synchronous machine 6, a key 7 with a logic unit level input level, a synchronous IK trigger 8, a comparator 9, the AND-NE 10 logic circuit and the semiconductor switch 11 with switching 12 and control 13 current inputs. Position 14 is marked controlling the input of the storage element 3.

In Figures 1, 2 and in the text, the following notation and abbreviation are accepted: az. 2i, Os - angles of rotation of the setting shaft and the actuating shaft and the angle orientation of the magnetic fluxes of the stators of synchronous machines 1 and 6; M0p, Mn - the moments of the operator and the load acting on the setting and the actuating shafts; M3, Mi - torques specifying 1 and executive 6 synchronous machines; , ri, fsz, - magnetic fluxes of rotors and stators 1 and executive 6 synchronous machines.

The device works as follows.

With the open key 7 and 1 at the output of the IK-flip-flop 8, the storage element 3 works as a repeater, its input and output signals are the same, and the orientation of the magnetic fields for this case is shown in FIG. 2a, i.e. Torques on shafts of synchronous machines can be written as follows:

M3 KeOz- “and) (1)

Mi Ki ("s -" and) Sin I Ovt - Oc I

where K3, Ki are the coefficients determined by the design of synchronous machines 1 and 6.

The position of the stator fields "c is set by the first sensor 2 of the position so that g / 5rz perpendicular to the RSZ while the executive synchronous machine 6 is working

as synchronous. From (1) one can see the presence of a reflection of force on the drive shaft (). In this mode, the structure and operation of the device are similar to those in the device prototype.

If it is necessary to fix the position, the operator closes the switch 7, the K-input of the IK-flip-flop 8 will receive 1, which will set the output of the flip-flop to 8. At the same time

the unit is on the Wits and on the inverting C-input of the IK-flip-flop 8, which does not prevent it from setting to zero, but will prohibit further switchings for the entire time of the key 7 being closed. It should be noted that at the moment

switching due to the operation of the storage element 3 in the repeater mode its input and output signals were the same, therefore, at the inverting output of the comparator 9 connected to the input

AND-NOT 10, O, and consequently, at the 1-input of the IK-flip-flop 8, connected to its output, 1, which does not interfere, however, with the installation of the flip-flop in O due to the inversion of the IK-flip-flop 8 of the previous state

such a combination of signals.

If, due to the reasons described above, it appears on the control input 14 of the storage element 3, it goes into the information storage mode, which sets

switching input 12 of the semiconductor switch 11, the orientation of the stator fields of both synchronous machines is constant, as is their amplitude at a constant Mn. Therefore, the executive rotor is synchronous

the machine 6 will lock in the same position of C4i and the rotor of the master synchronous machine 1 will rotate almost to match rz with pcz (Fig. 2b), since Mop 0 (it is assumed that the operator

turning on the fixation key 7, does not apply a moment to the specifier body). After this, the positions of both shafts will be fixed.

When unlocking key 7 at the C input

IK-flip-flop 8 in Wits O, allowing a change in its state, which will occur in one of two possible cases: O arrives at one of the inputs of the AND-NES 10 logic circuit from the output of comparator 9, or comparing element 4 (if the orientation of the rotors of both machines in effect changed the sign Mn). About at the output of the comparator 9 for the Vits only when the rotor is installed, the driver of the synchronous machine 1 is set in the position in which fixation was performed, i.e. with equality Mn Mi, M0p M3 (2). Therefore, the inclusion of the system in operation (i.e. the occurrence of a unit at the l-input of the trigger 8 and at its output), at which

element 3 will switch to the repeater mode of operation, it will only happen when the Mop is increased, which is necessary to set RZ to the position perpendicular to the FSU, i.e. smoothly, without a jerk that would have occurred without trigger 8, comparator 9 and the AND-10 logic circuit, when the key 7 is directly connected to the input of the operation mode of the memory element 3. Figure 2b illustrates the orientation of the magnetic fields when the sign Mn changes, led to the coincidence of ps and ri, i.e. the equality of "h and" and, during the transition process, which began due to a change in the sign at the output of the comparing element 4 and inverting, consequently, the cut and rsi. During operation, the diagram in Fig. 2b will move to the same as in Fig. 2a to the diagram in FIG. 2g.

The positive effect of the proposed device is to expand its functionality, i.e. in ensuring the fixation of the positions of the driver and actuator, the commissioning after the end of fixation is carried out without a jerk, as it is done after increasing the operator's counteracting moment to the value necessary to fully compensate the torque of the master synchronous machine, reflecting the existing loading moment. It is achieved by introducing into the circuit a storage element, a synchronous IK-trigger, a comparator, an NAND circuit and a key, and corresponding connections between the elements of the device.

It should also be noted the simplicity and the associated high reliability of the device.

The device can be implemented both on digital and analog elements (in particular, a storage element

with digital position sensors, it is possible to perform on synchronous D-triggers, etc.).

Claims (1)

Invention Formula 5 Remote transmission device the rotation angle of the driver shaft, which contains the driver synchronous machine with the first position sensor fixed on the driver shaft, the executive synchronous bus with the second position sensor, the semiconductor switch with the switching and control current value inputs, to the outputs of which the windings of the synchronous machines are connected in parallel, 15 comparing element, the inputs of which are connected to the outputs of the position sensors, and the output is connected to the control current value input to the semiconductor switch, characterized in that, in order to expand the functionality of the device by fixing the position of the drive shaft and simplify operation, a memory element comparator is entered , a synchronous IK-trigger, a key and a logic circuit, the NAND, wherein the storage element is connected between the output of the first position sensor and the input of the comparing element, and the input is stored element is connected to one of the inputs 0 comparator, the second input of which is connected to the output of the storage element and the switching input of the semiconductor switch, while the output of the comparator is connected to the input of the logic circuit AND NONE, 5 to the second input of which the output of the comparing element is connected, and the output of the logic circuit IS NOT connected to the l-input of the synchronous IK-flip-flop, the remaining inputs of which are K and C are connected to the output of the key, 0 to the input of the latter is supplied the level of the logical unit, and the output of the synchronous IK-trigger is connected to the control input of the storage element.