ADLINK Technology cPCI-8168, Руководство пользователя

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42 Operation Theory
driver’s performance, ASIC outputting profile, vendor’s software
parameters to ASIC, and users’ command to vendors’ software.
ASIC-based motion control allows the motion controller to co-
operate more smoothly between devices.
4.1.7 Compare Table of all motion control types
*real-time OS included
** DSP or software realtime OS is needed
4.1.8 cPCI-8168’s motion controller type
The cPCI-8168 is an ASIC based, pulse type motion controller
maked into three blocks: motion ASIC, PCI card, software motion
library. Users can access motion ASIC via our software motion
libray under Windows 2000/XP, Linux, and RTX driver. Our soft-
ware motion library provides one-stop-function for controlling
motors. All the speed parameters’ calculations are done via our
library.
For example, if users want to perform an one-axis point to point
moition with a trapezoidal speed profile, they need only fill the tar-
get position, speed, and acceleration time in one function. Then
the motor will run according to the profile. It does not occupy any
of the CPU’s resources since every control cycle’s pulse genera-
tion is done by ASIC. The precision of target position depends on
the motor drivers’ closed loop control performance and mechnical
parts, not on the motion controller’s command since the motion
controller is only responsible for sending correct pulse counts via a
Software ASIC DSP
Price *Fair Cheap Expensive
Functionality Highest Low Normal
Maintenance Hard Easy Fair
Analog Pulses Network
Price High Low **Normal
Signal Quality
(refer to distance)
Fair Good Best
Maintenance Hard Fair Easy