Quantum key distribution with continuous variables already uses advantageous high-speed single-mode homodyne detection low electronic noise at room temperature. Together continuous-variable information encoding to nonclassical states, the distance for secure transmission through lossy channels can approach 300 km in current optical fibers. Such protocols tolerate higher channel and also limited...

In many dynamic systems large vibration amplitudes occur if the operation frequency is near resonance frequency. Also during passage result. order to reduce amplitude of oscillation a suitable excitation can be applied. The force driven single degree freedom harmonic oscillator used analyse reaction system variable analysis starts with mathematical transformation signal in identify influence di...

Hysteresis current control method is vastly used in PWM inverters because of simplicity in performance, fast control response and good ability in limiting peak current. However, switching frequency in hysteresis current control method with fixed bandwidth has large variation during a cycle and therefore causes non-optimal current ripple generation in output current. One of basic problems in imp...

Inductance profile has an important bearing on the performance of a Switched Reluctance Motor (SRM) This paper presents the results of a frequency respolse method to estimate the inductance profde of SRMs. Stator winding is energized by a variable voltage variable Frequency supply. An approximate equivalent circuit incorporating stator resistance, winding inductance and loss component has been ...

Radio frequency identification-enabled supply chain systems are in an open system environment, where different organisations have different business workflows and operate on different standards and protocols. This supply-chain environment can only be effective if the partners can trust each other and be collaborative. However, Radio Frequency Identification (RFID) involves growing privacy and s...

Using a variable frequency drive (VFD) in order to drive the vacuum pump of a milking machine allows a dramatic reduction in energy use, while still producing equivalent vacuum stability. The VFD technology is able to adjust the rate of air removal from the milking system by changing the speed of the vacuum pump motor. A PID controller was developed in order to command the electric motor drivin...

The cooperative effort is described of equipment manufacturers, the process plant designer and the ultimate user to specify and design a compressor system that was driven by a 10,500 horsepower induction motor that was controlled by a variable frequency drive (VFD) system. A design methodology is presented which avoids the potential of VFD system harmonics from coinciding with system mechanical...