For a high system performance, there
has to be total performance of the motor unit, which generates thrust,
the motor control unit, and the stage unit, which makes possible
high-accuracy operation. This fully integrated system has the following
merits.
| (1) |
High-speed, high-accuracy positioning: Because
each axis is driven directly by a PM-type, direct current coreless
coil motor using advanced rare-earth magnets, high-speed, high-accuracy
positioning is possible even with long-stroke specifications.
In addition, the system is simpler, smaller and lighter than
others because it does not require a combination of coarse
and delicate driving to achieve high speed without compromising
accuracy. |
| (2) |
Low-noise, low-dust emission: Because stage
construction does not use ball screws, a low-noise structure
is possible. And because there is no rotary section, which
can cause oil mist to be scattered, dust levels are also kept
down. |
| (3) |
High reliability, low cost: Hitachi Metals standard
linear motors are used in motor core sections with short delivery
times.: Because reliability is high and parts are standardized,
systems can be built very quickly and inexpensively. |
| (4) |
In the case of Hitachi Metals general-purpose
motor control units, it is possible to rewrite control programs
using a microcomputer. Units can be custom-built to meet a
wide range of preferences, including low- to high-speed operating
ranges to positioning and velocity stabilization applications. |
|
axial
5
m
