This patent application is assigned to Dell Products L.p.
The following quote was obtained by the news editors from the background information supplied by the inventors: "As the value and use of information continues to increase, individuals and businesses seek additional ways to process and store information. One option available to users is information handling systems. An information handling system generally processes, compiles, stores, and/or communicates information or data for business, personal, or other purposes thereby allowing users to take advantage of the value of the information. Because technology and information handling needs and requirements vary between different users or applications, information handling systems may also vary regarding what information is handled, how the information is handled, how much information is processed, stored, or communicated, and how quickly and efficiently the information may be processed, stored, or communicated. The variations in information handling systems allow for information handling systems to be general or configured for a specific user or specific use such as financial transaction processing, airline reservations, enterprise data storage, or global communications. In addition, information handling systems may include a variety of hardware and software components that may be configured to process, store, and communicate information and may include one or more computer systems, data storage systems, and networking systems.
"As processors, graphics cards, random access memory (RAM) and other components in information handling systems have increased in clock speed and power consumption, the amount of heat produced by such components as a side-effect of normal operation has also increased. Often, the temperatures of these components need to be kept within a reasonable range to prevent overheating, instability, malfunction and damage leading to a shortened component lifespan. Accordingly, air movers (e.g., cooling fans and blowers) have often been used in information handling systems to cool information handling systems and their components.
"Among the disadvantages associated with traditional air movers are the acoustical noise generated by such devices. In traditional air movers, speed variation at lower operating speeds may vary greatly (e.g., in the range of 15-20%). The speed variation may be attributable to many factors, including without limitation electrical resistance in air mover circuitry (e.g., of a coil winding), magnetization of magnetic components of the air mover, dimensions of structural components of the air mover, physical characteristics of a speed sensor of the air mover (e.g., Hall effect sensor), speed control circuit design, and/or other factors. Testing of traditional air movers has shown that the intensity of sound produced is a function of the fifth power of fan speed and a function of the seventh power of blower speed. Thus, even with a constant input control value, high variance in air mover speeds may yield very different and inconsistent acoustical signatures from fan to fan and thus system to system."
In addition to the background information obtained for this patent application, VerticalNews journalists also obtained the inventors' summary information for this patent application: "In accordance with the teachings of the present disclosure, the disadvantages and problems associated with cooling an information system and components thereof may be substantially reduced or eliminated.
"In accordance with embodiments of the present disclosure, a system may include a rotational component for moving air, a speed sensor, an electrical draw sensor, and a controller. The speed sensor may be configured to determine a speed of the rotational component. The electrical draw sensor may be configured to determine an electrical draw of the air mover. The controller may be communicatively coupled to the rotational component, the speed sensor, and the electrical draw sensor, and may be configured to control the speed of the rotational component based on the speed and the electrical draw.
"In accordance with these and other embodiments of the present disclosure, an information handling system may include a processor and an air mover. The air mover may include a rotational component for moving air, a speed sensor, an electrical draw sensor, and a controller. The speed sensor may be configured to determine a speed of the rotational component. The electrical draw sensor may be configured to determine an electrical draw of the air mover. The controller may be communicatively coupled to the processor, the rotational component, the speed sensor, and the electrical draw sensor, and may be configured to control the speed of the rotational component based on the speed and the electrical draw.
"In accordance with these and other embodiments of the present disclosure, a method may include receiving an input signal indicative of a desired speed for a rotational component of an air mover. The method may also include determining a maximum electrical draw based on the input signal. The method may further include limiting the speed of the rotational component such that an electrical draw is less than the maximum electrical draw.
BRIEF DESCRIPTION OF THE DRAWINGS
"A more complete understanding of the present embodiments and advantages thereof may be acquired by referring to the following description taken in conjunction with the accompanying drawings, in which like reference numbers indicate like features, and wherein:
"FIG. 1 illustrates a block diagram of an example information handling system, in accordance with the present disclosure;
"FIG. 2 illustrates a flow diagram depicting a method for controlling speed of an air mover, in accordance with the present disclosure;
"FIGS. 3 and 4 each illustrate a graph depicting experimental performance characteristics of an example closed loop air mover system and an example open loop air mover system, in accordance with the present disclosure; and
"FIG. 5 illustrates a graph depicting experimental performance characteristics of an example closed loop air mover system, an example open loop air mover system, and the air mover system depicted in FIG. 2, in accordance with the present disclosure."
URL and more information on this patent application, see: Curtis, Robert; Peterson, Chris E. Systems and Methods for Speed Control of an Air Mover. Filed
Keywords for this news article include: Dell Products L.p., Information Technology, Information and
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