[Qwerfk]

I welcome all.

My question is this:
Today, there are basic types of electric motors.
For example, Brushed DC Motors (BDC), Brushless DC Motors (BLDC), Universal Motors, AC Induction Motor, Torque motors, stepper motors.

Accuracy and positioning servo will depend on the type of motor?
For example, with or without brushes.

Are Now apply a brush motors (two-, four-pole) for servo, quadrature encoder 1000 CPR / rev., which can give 4000 steps / rev. ?

To move to within 0,01 - 0.001 mm (0.0003-0.00003 inches).
Or brush motors are outdated and less used.

For example, my own collector DC motor, with the following parameters:
Power: 400W
Power supply: 27V (can be less)
Current consumption of no more than 23 A (inrush current 50-55A)
Four-pole DC motor mixed excitation.
Speed: 9500 r / min.
Mode of operation: continuous operation.
Application: aircraft engine to blast equipment.

Thank you.

[Al_The_Man]

Today, there are basic types of electric motors.
For example, Brushed DC Motors (BDC), Brushless DC Motors (BLDC), Universal Motors, AC Induction Motor, Torque motors, stepper motors.
Accuracy and positioning servo will depend on the type of motor?
For example, with or without brushes.
.

A bit of a mixed bag of questions?
If referring to servo control, accuracy of positioning is dependent on many factors, not so much the type of motor, but the quality of that motor to operate in a servo environment.
Typically DC brushed, BLDC or AC servo can all operate adequately in a servo situation.

Are Now apply a brush motors (two-, four-pole) for servo, quadrature encoder 1000 CPR / rev., which can give 4000 steps / rev. ?
To move to within 0,01 - 0.001 mm (0.0003-0.00003 inches).
Or brush motors are outdated and less used.

Brush motor are older technology, but are still capable of performing adequately.
A 1k pulse quadrature encoder can produce a resolution of 1k x4 pulses, if done in the controller, the measured degree of resolution will depend on the distance moved per 1/rev of the encoder, and is dependent on gearing etc.

For example, my own collector DC motor, with the following parameters:
Power: 400W
Power supply: 27V (can be less)
Current consumption of no more than 23 A (inrush current 50-55A)
Four-pole DC motor mixed excitation.
Speed: 9500 r / min.
Mode of operation: continuous operation.
Application: aircraft engine to blast equipment.

Thank you.

Not sure what you refer to as mixed excitation? The motors you show in a previous post appear to be permanent magnet (fixed) excitation?
9500rpm is unusually high for a DC brushed motor.
More on the application? Is this actually a servo application?
Al.