For most closed-loop feedback control systems, phase margin is greater than 45° (less than 315°) when the loop gain is greater than 0 dB. Gain margin is -20 dB or lower when the loop phase delay ...

The hysteretic power supply is simpler than the voltage- or current-mode closed-loop-control dc-dc switchers, although its simplicity may be a bit deceiving due to component variations and ...

Experiments demonstrated that VCRs achieve AR sensitivities of 24.4 (N/m)⁻¹ in open-loop mode and 33.0 (N/m)⁻¹ in closed-loop, far exceeding the 9.03 (N/m)⁻¹ achieved by comparable WCRs. Additionally, ...

Halliburton’s ZEUS IQ™ intelligent fracturing platform, comprised of OCTIV® auto frac and Sensori™ monitoring, provides the necessary closed feedback loop and control capability.