Page 36 - AMTDC Annual Report 2019-20flipbook

Development of Axis and Spindle Motor Drives: Indigenous Precision

Motion Control Solution for Machine Tool Sector

Scope/ Objective:

1. Development of Axis Motor Drives for Machine tool
applications in the range up to 5 kW.
2. Development of Spindle Motor Drives for Machine tool
applications in the range up to 25 kW Motor Drives –

3. To evaluate the performance of the developed motor Indispensable Part of the
drives installed in a VMC.
Machine Tool Industry
4. To build state-of-the-art motor drive power electronics and
controls that produces drive responses measuring up to world The machine tool industry
class benchmark parameters. depends on motor drives for operation.
Project Overview: The operation involves sophisticated
control algorithms which are different in
Power inverter hardware have been successfully the axis and spindle motor cases. The axis
developed to withstand continuous operation under loaded motors are responsible for accuracy of the
conditions with suitable thermal behaviour. The drives have machining operation while the spindle
been benchmarked for operation on a standard VMC with motor drives are responsible for the
industry standard axis motors and industry standard material removal. Indigenous efforts for
controllers being interfaced to the drive. The performance the development of such drives at the
has been compared with industry standard complete system power levels intended have been few and
with both ball-bar and ISO standard parts for accuracy not widely seen in the machine tools
measurement. A novel load torque estimation algorithm has domain. The technology is dominated by
been implemented in the axis motor control structure for MNC offerings.
eliminating the effects of loading and cogging torques of the
motor, which has been published in leading international
conference.

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AMTDC Annual Report | 2019-20