open loop


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open loop

A system operating without feedback, or with only partial feedback. See also feedback control loop.
References in periodicals archive ?
Ships with open loop scrubbers docking or sailing through those ports would need to store waste in tanks until it could be discharged elsewhere or avoid the ports.
As part of this research, an algorithm was developed to control the open loop tracking system in order to compare its efficiency with that of a system controlled by LDR sensors.
Open loop systems use ground- or surface water as their heat transfer fluid through the use of created wells or existing bodies of water.
where [y.sub.ss] and [u.sub.ol] represent the open loop injection velocity (steady state) and its corresponding voltage signal to the servo-valve, respectively.
One type of open loop system that is suitable for areas where the earth is made up of bedrock and where ground water yields are low is the standing column well system.
An open loop burst of length b or less with Lee weight [w.sub.L] or less ([w.sub.L] [less than or equal to] b[q/2]) is a vector all of whose non-zero components are confined to atmost b-consecutive components, the first and last of which are non-zero and the Lee weight of these atmost b non-zero entries is less than or equal to [w.sub.L].
Fluid power systems can be divided into two major groups: open loop and closed loop.
The servo-amplifier is suited for dosed or open loop velocity and torque control of BLDC motors producing greater than 106 oz-in.
IPC also offers the Flip-up Open Loop Grab Bar, which can be raised when not in use.
In Figure 2, the cascade open loop is closed using a mathematical dual backward-wave coupler with no insertion loss and 0 dB coupling value.
Then, there would be a final open loop closing of the throttling valve at a fixed position to dampen the impact even further.
The VersaFlex family includes three separate ranges of AC drive spanning open loop, encoderless vector control, and closed loop vector control technologies.