ADLINK Technology PCI-8174, User Manual

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38 Operation Theory
motion control separates all system integration problems into 4
parts: Motor driver’s performance, ASIC outputting profile, ven-
dor’s software parameters to the ASIC, and users’ command to
vendors’ software. It makes motion controller co-operated more
smoothly between devices.
4.1.7 Compare Table of all motion control types
* Including real-time OS
** DSP or real-time OS required
4.1.8 PCI-8174 motion controller type
The PCI-8174 is a DSP plus ASIC based and a pulse motion con-
troller made into five blocks: on board DSP, DSP kernel, motion
ASIC, PCI card, software motion library. The motion ASIC can be
accessed via our software motion library under many kinds of Win-
dows 2000/XP/Vista, Linux, and RTX driver. Our software motion
library provides one-stop-function for controlling motors. All the
speed parameter calculations are done via our library.
For example, to perform a one-axis point to point motion with a
trapezoidal speed profile, only fill the target position, speed, and
acceleration time in one function. Then the motor will run as the
profile. It takes no CPU resources because every control cycle
pulse generation is done by the ASIC. The precision of target posi-
tion depends on motor drivers’ closed loop control performance
and mechanical parts, not on motion controller’s command
because the motion controller is only responsible for sending cor-
rect pulses counts via a desired speed profile. So it is much easier
Software ASIC DSP
Price Fair* Cheap Expensive
Functionality Highest Low Normal
Maintenance Hard Easy Fair
Analog Pulses Network
Price High Low Normal**
Signal Quality Fair Good Reliable
Maintenance Hard Easy Easy