We proposed heterodyne angle deviation interferometry (HADI) for angle deviation measurements. The phase shift of an angular sensor (which can be a metal film or a surface plasmon resonance (SPR) prism) is proportional to the deviation angle of the test beam. The method has been demonstrated in bubble and speaker’s vibration measurements in this paper. In the speaker’s vibration measurement, th...

Charge-Based Capacitance Measurement (CBCM) technique is a simple but effective for measuring capacitance values down to the attofarad level. However, when adopted fully on-chip implementation, this suffers output offset caused by mismatches and process variations. This paper introduces novel method that compensates of integrated differential CBCM electronic front-end. After detailed theoretica...

for multi-objective optimal reactive power dispatch (morpd), a new approach is proposed where simultaneous minimization of the active power transmission loss, the bus voltage deviation and the voltage stability index of a power system are achieved. optimal settings of continuous and discrete control variables (e.g. generator voltages, tap positions of tap changing transformers and the number of...

introduction in radiography, dose and image quality are dependent on radiographic parameters. the problem is caused from incorrect use of radiography equipment and from the radiation exposure to patients much more than required. therefore, the aim of this study was to implement a quality-control program to detect changes in exposure parameters, which may affect diagnosis or patient radiation do...

This paper presents 1μW curvature-corrected bandgap reference that is capable of operating with an input power supply range of 0.88-5.5V. A 0.3V precision voltage reference is implemented with 3-stage RNMC (Reversed Nested Miller Compensation) operational amplifier and a novel PTAT current source to compensate the thermal nonlinearity of the base-emitter voltage. An experimental prototype gener...

optimal sitting and sizing of shunt capacitor banks at the distribution networks for the purpose of power quality improvement is drawn much attention of electric power utilities in the last decades. determining the optimal number, location and sizing of capacitor using bee colony optimization algorithm (bco) is being presented in this paper. the bco algorithm is a new population based meta-heur...

In this paper, a new topology is proposed for three-phase to single-phase matrix converters, where more voltage levels are produced in the output in comparison with the conventional topologies. In addition, a new control method based on minimum error between the generated and the desired output voltages is proposed for three-phase to single-phase matrix converters. In the proposed control metho...

We report experimental and theoretical results on the flexoelectric instability and crossover between flexoelectric domains and electro-convection in a hybrid aligned nematic MBBA under d.c. voltage. At threshold a spatially periodic flexoelectric deformation in the form of longitudinal domains (along the planar director) was observed. With increasing voltage the director deviation out of the i...