open-loop control


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open-loop control

in motor control, movement that is executed without regard to sensory feedback. Contrast closed loop control.
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of turns 8 Degree 60[degrees] Table 2: Values of duty cycle & actual speed in rpm for open-loop control Duty cycle Actual speed 20 490 30 789 40 1123 50 1514 60 1946 70 2117 Table 3: set speed and actual speed of motor Set Speed Actual Speed 300 301 600 592 900 903 1200 1245 1500 1521 1800 1808 2200 2100
The open-loop control of reactor is considered through an optimization problem to compute surfactant and CTA feed flow rates to achieve the desired bimodal PSD and MWD.
The second level consists of supervisory and material flow computers responsible for higher-ranking operations entailing open-loop control, disposition, management, operator control, and visualisation of the sections of one or several linked baggage conveying systems.
A Hydrolux-supplied proportional-controlled manifold system for the clamp side, and Vickers PQ system at the injection end, both with standard open-loop control, are specifically adapted for electronic profiling and regulation of machine speeds and pressures.
By virtue of the open-loop control manner for the setpoint response, it is apparently decoupled from the load disturbance response; which is a dominant advantage of the control structure proposed by Lui.
All three series of MAE hybrid stepper motors can deliver accurate open-loop control for high-performance positioning applications.
Because of the lack of a good closed-loop control technology for injection velocity, open-loop control is still widely used in the industry.
Researchers at the Texas Engineering Experiment Center, which is part of Texas A&M University (College Station), have developed a sensor system based on light-emitting diodes (LED) that can rapidly and reliably locate a robotic end effector in Cartesian space and relate that measurement to manipulator joint encoder readings, thus creating a very accurate model for open-loop control of the robot.
Typical applications include: process monitoring, equipment health monitoring, asset management, file uploading/downloading, validation, and potentially open-loop control.
Its hybrid stepper motors are used in open-loop control systems for low-speed, high-torque applications.
Open-loop control methods could not quickly compensate for changes in the process, making product quality susceptible to variations in materials, moisture content, machine hydraulic-oil temperature, or barrel temperature.
Precise open-loop control, including exceptional accuracy and high resolution, eliminates the need, space and cost of optical taps and detectors.