servo loop

servo loop

[′sər·vō ‚lüp]
(control systems)
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They run in a servo loop controlled by field-programmable gate arrays and administered by LinuxCNC (computer numeric control) running on a real-time operating system.
Other compact offerings in B&R's portfolio include the 8WS series, designed for applications that require highly precise synchronization and accurate positioning in limited space, and B&R's Acopos P3 servo drives, which deliver a servo loop closure rate as fast as 50 I1/4s.
It digitally performs both current loop and servo loop closures to ensure the highest level of positioning accuracy and performance.
This is called a position servo loop and typically consists of a PID (proportional, integral, derivative) filter to generate the motor command value.
Like other products in the DMC-30000 series, the DMC-30016 is higher speed than Galil's prior generation single-axis controllers; the 125 microsecond servo loop update time is twice as fast and the 15 MHz encoder frequency and 3.0 MHz stepper pulse output are 25% faster.
The new controller accommodates position feedback data at rates as high as 10 MHz, and has a servo loop update time of just 100 microseconds, twice as fast as its predecessor.
Instead of employing 'soil' servo loop gains to eliminate noise and vibration by de-tuning the system--which is a compromise often faced when retrofitting a drive to an existing installation--users can set up the filters to optimise dynamic performance and minimise settling times.
Jan: Ten years ago, steppers were easier for people because they offered positioning capability without having to close a servo loop, deal with feedback or shoot PID loops.
This loop filter allows the servo loop to have very high gain at low frequencies, but stabilizes the loop by limiting the high-frequency gain.
A servo loop, also called a compensator, has the job of driving the motor to a particular position.
Requiring only an external amplifier to be functional, this advanced motion IC provides profile generation, servo loop closure, PLC-style signal manipulation, and motor signal generation.
The servo loop can be closed with the addition of a very small absolute encoder, the AE2-64, with 64 absolute pulses per revolution.