In this paper, the space-vector pulsewidth modulation (SVPWM) technique for two-phase inverters is proposed. The proposed SVPWM applicable to induction motor drives. using can generate only four space voltage vectors, but cannot zero vectors. A reference vector located in square locus realized by adjusting switching sequence order minimize ripple content of output current. Practical verification theoretical predictions presented confirm capabilities new technique.

This letter deals with the problem of multiple robots working together to explore and gather at global maximum unknown field. Given noisy sensor measurements obtained location no prior knowledge about environmental map, Gaussian process regression can be an efficient solution construct a map that represents spatial information confidence intervals. However, because conventional algorithm operates in centralized manner, it is difficult coming from distributed sensors real-time. In this work,...

This article focuses on simple space-vector PWM (SPWM) methods for two-leg, three-leg, and four-leg inverters that can be applied to three phase induction motor drives (TPIM). First, a carrier-based method two-leg inverter was proposed the basis of conventional SPWM method. Second, four leg used double triangular carrier wave proposed. Third, three-leg as replacement SVPWM Digital calculations using PSIM software package are performed investigate effectiveness

This letter presents a combination of reinforcement learning (RL) and deterministic controllers to learn quadrotor control. Learning the flight in standard RL approach requires many iterations trial error, which may bring about risky exploration battery consumption. In this letter, we integrate classical controller such as PD (proportional derivative) or LQR (linear quadratic regulator) with policy using their linear combination. The proposed method is not only simple use, but also fast...

A step-up/down AC voltage regulator is proposed, in which a tap-changing transformer and pulsewidth modulation (PWM) chopper are combined. The proposed can step up or down the output to input voltage. Also, restrains more harmonics of compared conventional PWM regulator. current flows continuously regulator, while it discontinuously Through digital simulation, several characteristics investigated theoretically then with those schemes. Practical verification theoretical predictions presented...

This paper presents several of the problems encountered with vector-controlled single-phase induction motor (SPIM), and discusses about complex implementation a vector controlled SPIM drive. The symmetrical two-phase (TPIM) is presented as viable replacement for SPIM. proposed TPIM simple compared to All parameters can be calculated simply precisely. strategy derived from indirect control used three-phase ac machines. Several differences between strategies are discussed. validity was...

A phase-difference angle (PDA) controlled pulsewidth-modulated (PWM) inverter is proposed for a two-phase induction motor adjustable speed drive. Output waveforms are fixed over the whole operating range of motor. The torque not by modulation phase voltage, but PDA. Based on selected harmonic elimination (SHE) PWM technique, commutation angles output voltage calculated. Several characteristics driven PDA analyzed. hybrid also to compensate degradation efficiency at small Not only amplitude...

This letter presents real-time optimization algorithms on trajectory generation and control for a multi-rotor with suspended load. Since the load is through cable without any actuator, movement of must be controlled via maneuvers multi-rotor, which brings about difficulties in operating this system. Additionally, highly nonlinear dynamics system exacerbates difficulties. While are essential safety, energy efficiency, stability, aforementioned characteristics add challenges. With mind,...

An asymmetrical pulse width modulated (APWM) control technique for AC choppers is proposed to improve the input power factor. The switching function derived and hence converted into PWM waveform practical implementation of an chopper. Through digital simulation several characteristics are investigated theoretically then compared with those conventional technique. strategy simplified approximate APWM which can be realized by analog circuit. Practical verification theoretical predictions...

This paper describes the asymmetrical pulse width modulated (APWM) control technique for single phase AC choppers, which improves input power factor and eliminates harmonics of output voltage up to a specified order. also enables linear fundamental component voltage. The APWM switching patterns at angle are obtained by Newton-Raphson method can be implemented one-chip microprocessor. Theoretical comparisons made with conventional PWM computed performance indicates superiority proposed...

We report the effects of hydrostatic pressure up to p ∼ 1.73 GPa on multiferroic and magnetoelectric properties GdMn2O5 single crystals. The ferroelectric (FE) polarization can be enhanced at low pressures, while it decreased after reaching a maximum 1.30 GPa. This induced variation ascribed combined results Mn–Mn Gd–Mn exchange striction under pressure. Our show that by interaction increases monotonously with increasing finally saturates above ≳ Interestingly, we find new FE phase appears...

Aerial manipulation has been widely studied to be employed in various tasks such as exploration and transportation. To incorporate aerial into more sophisticated like pulling or pushing a heavy cargo, an active interaction with surrounding structures should considered. Unlike physical contact static structure which was mainly previous papers, movable requires consideration of dynamics the makes scenario complex. In this paper, manipulator opening hinged door is presented. Coupled between...

In this paper, we propose a method to improve the networked UAV control system using event-triggered and model predictive (MPC). Although over network has many advantages, it involves long-time delay packet loss, which adversely affect real-time performance. Delay compensation algorithms in (NCS) have been proposed address such issues, however, they do not consider resource limit of so that congestion may occur. case, loss issues can even be worsened. study, reduce generation less important...

In a three-phase power system, unbalanced voltage with harmonics can be detected on the synchronous reference frame. Assuming that there is no neutral path in an harmonic components has DC component, 2nd and other components. Therefore, it possible to compensate by cancelling components, exclusive of component d-q axis. addition, adjusting value obtained from positive sequences, regulation load achieved. This paper presents algorithm performing compensation as well maintaining constant side....

An asymmetrical pulsewidth modulated (APWM) control technique for AC choppers, which can improve the input power factor as well harmonic contents, is proposed. A switching scheme proposed suggested. Using digital simulation, several characteristics are investigated theoretically and then compared with those of conventional PWM one. Practical experimental results have good agreement calculated ones, proving feasibility technique.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML"...

An asymmetrical pulse-width modulated (APWM) control technique for an AC chopper which can improve the input power factor and suppress harmonic contents of currents at both its load sides is proposed. The ideal switching function proposed derived converted into APWM pattern practical implementation voltage regulator. By digital simulation several characteristics are investigated theoretically then compared with those phase angle conventional PWM technique. experimental results show good...

In this paper, we propose a distributed beam tracking scheme for millimeter-wave unmanned aerial vehicle (UAV)-assisted communication systems. the considered systems, node base (aNB) connects ground vehicles (GV) through directive beams to mitigate path loss. However, line-of-sight (LoS) blockage may result in link disconnection, which leads corruption of observations. To solve issue, extend one-to-one into multi-node cooperative scheme. For problem, develop extended Kalman filter...

In this paper, a space voltage vector pulsewidth modulation (SVPWM) technique for two-phase inverter is proposed. Such applicable to single-phase induction motor drives. There are four vectors and no zero in the inverter. A reference square locus realized by adjusting vectors. The switching sequence "two-phase symmetrical modulation" of

In this paper, new pulsewidth modulation (PWM) techniques for the two-leg, four-leg and three-leg two-phase inverter are proposed instead of conventional complex techniques, which is applied to adjustable speed control induction motor. First, PWM technique two-leg on basis sinusoidal technique. Second, double carrier wave. Third, assuming that equivalent circuit " with coupled two windings" . Simulation experimental results provided illustrate techniques.

A novel approach is proposed to extend the range of speed control and eliminate harmonic contents output voltage two-phase inverter-fed induction motor. These are both disadvantages a conventional two-step driving system. Phase-difference used simplify circuit. microprocessor-based PWM technique content voltage. The algorithm for phase-difference presented. performance motor run by method analyzed.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML"...

A novel asymmetrical pulsewidth modulated (APWM) control technique for AC choppers is proposed which can improve the input power factor and eliminate harmonics of output voltage up to a specified order, also enables linear fundamental component voltage. The PWM switching patterns at phase angle are obtained by Newton-Raphson method. By digital simulation several characteristics an circuit with chopper investigated theoretically, then compared those conventional APWM techniques.< <ETX...