Page 17 - June

METALWORKING EQUIPMENT AND TOOLS

Group delay fluctuations τgf - the amount of group delay change in the drive's passband
(see Figure 1, d). A change in the group delay leads to the fact that when a signal with a
complex spectrum is applied to the input of the drive, separate different times, which causes its
distortion. Q-factor is the value of the gain of the position loop [9]. The total moment of inertia
of the drive is
Each polynomial sets specific requirements for the mechanical part of the drive.

In [8], they were transformed to a more convenient form for analysis:

So, the moment of inertia of the torsional part of the drive J1 at a given reduced moment
of the movable unit
J is J = J K , (1)
1
2
2
and the total moment of inertia of the drive j

With the same engine torque Mmax, the maximum acceleration εmax is inversely proportional
to the moment of inertia, and the polynomial with the largest multiplier K will have the smallest
possible acceleration at J = const. J
2
Similarly, the required axial stiffness of the drive, reduced to the form of torsional stiffness - Nm
/ rad, is determined:
C = J K .
1,2
c
2
The transfer of mass to the reduced moment of inertia is carried out using the dependence
of the form

where mу is the mass of the unit being moved, kg; h - screw pitch, m. Conversion of the
reduced torsional stiffness of the drive into axial, N / m:

.Natural frequency of axial vibrations of the table

Stanochniy park 17