Frequency

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  • Analysis Of Frequency

    Δfsw−coeff(푚,휃푣)=1−(1−Δfsw−nom(푚,휃푣))∗푘 (9) The coefficients are multiplied with the base switching frequency to provide the operating switching frequency of the inverter, as shown in Fig. 5. It should be noted that the base switching frequency magnitude does not depend on the sub-cycle current ripple variation and is typically adjusted based on operating current, speed and temperature of the traction drive [1]. SIMULATION RESULTS For the simulation study, a two-level inverter driving a three-phase R-L load is used, as shown in Fig. 7. The proposed approach was tested on a system which operates at a nominal switching frequency of 6 kHz at the linear modulation index range and with 12 kHz at the over-modulation index range. The DC-link voltage…

    Words: 1105 - Pages: 5
  • Relative Frequency For Coca-Cola

    easily change the column headings in the frequency distribution output. for instance, to change the current heading in cell A3 (Row Labels) to “Soft drink,” click in cell A3 and type “Soft drink”; to change the current heading in cell b3 (Count of brand Purchased) to “frequency,” click in cell b3 and type “frequency”; and to change the current heading in A9 (Grand Total) to “Total,” click in cell A9 and type…

    Words: 781 - Pages: 4
  • Allele Frequency Law Research Paper

    Hardy­Weinberg Law Given the mathematical and statistical methods used already, this law also uses probability, however is represented in a graphical manner. Through this graph I will determine if the class data set has significant variation on an allele by genotype graph by comparing their points to the collection of data sets from Census at School that will represent in this paper as the Canadian average. The Hardy­Weinberg Law, developed by G.H Hardy and Wilhelm Weinberg in 1908, states that…

    Words: 1191 - Pages: 5
  • The Radio Frequency Identification

    The innovation of the RFID chip or the Radio Frequency Identification has been a critical piece of technology that has been around since the 1950’s.. There are several methods of identification, but the most common is to store a serial number that identifies a person or object, and perhaps other information, on a microchip known as identity chip. A microchip implant could be used as a virtual barricade, to limit movement, and even to act as a tag for prisoners. In the realm of medicine, it could…

    Words: 958 - Pages: 4
  • Radio Frequency Identification (RFID)

    Radio Frequency Identification (RFID) Radio-Frequency Identification (RFID) is a wireless technology that uses radio waves to read and capture information stored on a tag. A RFID reader can read the tag from upto several feet away. However unlike barcode, it does not need to be within direct line-of-sight of the reader to be scanned. There are two different type of tags: one is passive tag which collects energy from a nearby RFID reader 's radio waves; and another one is active tag that has a…

    Words: 827 - Pages: 4
  • Radio-Frequency Identification: RFID Tags

    Radio-frequency identification also known as RFID is the use of wireless technology that uses electromagnetic fields to transfer data, for the purpose of automatically identifying and tracking RFID tags that are attached to objects. The RFID tags will have information that is electronically stored. Some of the tags will be powered by an electromagnetic induction from magnetic fields that are produced near the readers. Certain RFID tags will collect energy from the reader’s radio waves and will…

    Words: 808 - Pages: 4
  • Radio Frequency Identification (RF And RFID?

    NFC and RFID Radio Frequency Identification (RFID) is a wireless use of electromagnetic fields to transfer data, aiming to automatically identifying and tracking tags attached to objects. Near Field Communication (NFC) is one specific type of RFID, and shares many physical properties with it. The differences between NFC and RFID is that many extra properties were developed for NFC to enable secure mobile payments. 1.1. Radio Frequency Identification (RFID) RFID was first patented in…

    Words: 1929 - Pages: 8
  • RFID (Radio Frequency Identification) Technology

    Introduction RFID (Radio Frequency Identification) technology is a rapidly expanding technology being utilized more and more in our daily life. This paper will explain the history, uses, benefits, obstacles and innovations of RFID. I will examine why it is being employed by so many industries and what can limit its expansion. RFID Background RFID types consist of either passive systems, which do not have an internal power source, or active systems, which have a power supply and can…

    Words: 1464 - Pages: 6
  • Mechanical Vibration Experiment

    The motion in the fastening reason for the unit might be supervised with vibration pickup and examined to determine the spectrum. These details may then be employed to set the shaker drive signal to proper spectrum shape and level. The best approach would be to arrange the machine to watch and control the amount instantly. The three functional limitations to the performance of electrodynamic shaker are displacement, velocity and acceleration. Shaker is operated by displacement at the lowest…

    Words: 1464 - Pages: 6
  • Polarization In Antenna

    Polarization in Antenna Polarization is the basic thing used in transmission antennas for the propagation and reception of the signals. As we know that antenna emits electromagnetic waves in the space for the communication purposes. These two types of waves as depicted by the name Electro-Magnetic is a combination of electrical and magnetics fields. These two waves are mutually orthogonal i.e. oriented at an angle of 90o with each other. The general wave form is given as Fig: Electromagnetic…

    Words: 1098 - Pages: 5
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