The quality factor of coils should be high enough to deliver power efficiently during inductive transfer. To achieve a higher factor, are designed either with larger size and thicker wire or special structure, making the bulky complicating fabrication. This paper presents systematic method design in series-series transfer smallest possible value realize requirements transferability efficiency. electrical parameters normalized, decoupled equations, sequentially. It is found that for required...

Planar coils are popularly used in inductive power transfer applications. The coils' efficiency is improved with litz wire by eliminating the winding's skin-effect loss, but proximity-effect loss still needs to be considered. To calculate resistance, magnetic fields across windings required. During optimization process, numerical methods of field calculation too time-consuming due parametric sweep physical parameters. analytical preferred this scenario, it becomes complex existence ferrite...

Both the efficiency and stray magnetic field in inductive power transfer are influenced by design of transmitter receiver coils. Their synergetic optimization is realized with Pareto front. The conventional method to derive front requires thousands finite-element simulations sweep physical parameters coils, which time consuming especially for three-dimensional simulations. This paper demonstrates a fast optimize field. windings replaced several lumped loops. As long as number turns each loop...

Coils' efficiency and stray magnetic field should be optimized together when designing coils for inductive power transfer. Multi-objective optimization using Pareto front is a suitable method. It also provides straightforward accurate insight of the relationship between coils' since all solutions along fronts are structures. In this paper, versus used to design investigate efficiency-field transfer with different air gaps transmitter receiver coils. Procedure derive based on parametric sweep...

Efficiency and stray magnetic field are two important factors for coils design in inductive power transfer. By adding passive shields to the coils, is significantly attenuated. However, coils' efficiency reduced due losses of shields. Both should be considered fair comparison shields' performances. Four kinds transfer analyzed, including plate shield, ring litz reverse loops. Their performances compared using Pareto fronts versus magnetic. The show that with shield generate smallest when...

In a number of electromagnetic actuators, the stator and translator are structured to create highly nonlinear fringing flux generate force that varies linearly with displacement. Reliable prediction such requires an accurate model for flux. Assuming saturation is neglected fringings elliptical, reluctance derived depends on displacement, material properties, one tuning parameter describing shape ellipse. Fringing-related reluctances assembled regions linear predict magnetic field, energy,...

Significant stray magnetic field exists around the inductive-power-transfer (IPT) coils owning to large gap between transmitter and receiver. In this paper, is attenuated by controlling phases of windings' currents. The relationship currents analyzed according diagrams phasors. dual-side-controlled converter used for circuit realization, in which inverter rectifier with MOSFETs bridges are implemented on both side receiver side. pulsewidths voltages control magnitudes, whereas phases....

The metal shields with plates or rings are usually added to the inductive-power-transfer coils attenuate stray magnetic field. However, coil-to-coil efficiency is reduced owning extra losses on shields. This paper introduces litz shield which attenuates field smaller shielding loss thanks uniform distribution of current. Two types shields, i.e., shorted and driven discussed in detail. Their performances analyzed circuit model composed four coupled inductors. attenuation for optimized Pareto...

As a new method for power line inspection, unmanned aerial vehicle (UAV)-based inspection is efficient and low-cost. Since the flight speed of UAV fast, target auto-tracking photographing airborne equipments including visual-light camera, infrared thermal imager ultraviolet imager, very important useful function. In this work, system suitable UAV-based built, based on system, an algorithm used proposed. Theories coordinate transformation three systems (geodetic geocentric rectangular NEU...

An optically-enabled radio frquency (RF) self-interference cancellation system is demonstrated for over-the-air in-band full duplex transmission, based on a signal-of-interest (SOI) driven regular triangle algorithm. Since the goal of to retrieve SOI that masked by interference signal, using quality as parameter optimizing performance natural and effective way allow adapt changes obtain best performance. algorithm has short iteration time, bursts pseudo-random binary sequence would be used...

In order to achieve a generalized and non-iterative design methodology of coils in inductive power transfer, parameters are normalized as coupling coefficient, coil quality factor, load switching frequency. They designed sequentially meet the required voltage gain, zero-voltage switching, coils' efficiency. Physical dimensions, number turns, wire size optimized using finite-element simulation. An exemplary set (250mm × 250mm by 100 mm gap) full-bridge resonant DC-DC converter rated at 3.3 kW...

海産巻貝類のインポセックス (生殖器異常/生殖機能障害) に及ぼす有機スズ汚染の影響を知るために, 巻貝類のうちイボニシ (Thais clavigera) とバイ (Babylonia japonica) を対象に, GC/MSによるステロイドホルモンの同定を行った. その結果, イボニシについては, 精巣からテストステロン, 卵巣から17β-エストラジオールを, またバイについては一斉分析を行い, 精巣からテストステロンとアンドロステロン, 卵巣から17β-エストラジオール, エストロン及びエチニルエストラジオールの存在を初めて確認した. 更にGC/MS測定のための前処理 (抽出・精製) 法を検討し, サロゲート物質を用いた添加回収実験から良好な回収率を得ることができた. イボニシ及びバイ中のテストステロンと17β-エストラジオールが定量できた. また, 病理組織学的手法によって精巣におけるテストステロン産生細胞と思われる細胞の存在を観察し, また免疫組織化学的手法によって上記細胞の存在とテストステロンの存在についても観察した.

We report a new algorithm, called the self-adjusting to construct an aperiodic optical superlattice in which multiple nonlinear parametric processes can be realized simultaneously with high conversion efficiency. The numerical simulations show that algorithm has obvious advantages are due its own physical process and feedback function. Especially comparison other existing algorithms, eliminate need search blindly is independent of initial conditions.

Efficiency and stray magnetic field are influenced simultaneously by design of planar coils in inductive power transfer. Their synergetic optimization is lacking previous literature. Parametric sweep finite-element simulation one method for but it's time-consuming because thousands simulations required. A faster using matrix calculation described this paper. calculated with winding vectors, permeance matrices, current-to-field matrices instead being simulated. Physical parameters such as...

Planar coils with litz wires are used a lot in inductive power transfer for electric vehicles. When the wire is properly selected coil, winding resistance composed of DC and proximity-effect resistance. The calculation simple, using cross-sectional area length wire, but complicated, which magnetic fields across turns essential. ferrite plate added to planar coil improve quality factor coupling coefficient, analytical derivation even more complicated. In this paper, method image applied...

This paper aims to achieve highly accurate mapping results and real time pose estimation of autonomous vehicle by using the normal distribution transform (NDT) algoritm. A factor graph optimization algorithm (FGO-NDT) is proposed address poor real-time performance drift errors NDT algorithm. Smooth point cloud data are obtained multisensor calibration preprocessing. registration then used for lidar odometry feature matching. The global navigation satellite system (GNSS) loop detection added...

With the emergence of engineered domain-inverted optical superlattices in recent years, multiple quasi-phase-matching (QPM) can be achieved a single chip crystal, and has wide applications frequency conversion. Of late, some approaches have been proposed constructing superlattice order to implement QPM. This paper briefly reviews development QPM, introduces main new this field.

With conventional droop control, parallel operation of distributed generations (DG) in microgrid would lead to unbalanced power sharing. In this paper, inherent limitation control is analyzed. Analysis results show that different converter output impedance and line make the sharing unbalanced. order weaken or eliminate difference from point common coupling (PCC) DGs, virtual introduced. By introduction designed impedance, a novel strategy with compensation proposed paper. Simulation are...

The computer synthesis simulation of an aerial vehicle safety control system is made by using the Working Model software and unturned runaway escapement driven two rotors. research results have shown that can determine lateral acceleration effect.

This paper proposes a target tracking method called Incremental Self-Updating Visual Tracking for robot platforms. Our tracker treats the problem as binary classification: and background. The greyscale, HOG LBP features are used in this work to represent integrated into particle filter framework. To track over long time sequences, has update its model follow most recent target. In order deal with problems of calculation waste lack model-updating strategy traditional methods, an intelligent...

ELISA法を用いて海産巻貝であるイボニシの生殖巣中のテストステロンを個体別に定量するための測定条件を確立した. 抗テストステロン抗体キットの選択及び試料の前処理法を詳細に検討することにより, ELISA法で問題となる測定値のばらつきを克服することができ, 測定値はGC/MSの値と良い一致を示した. GC/MSではできなかった個体別の定量が初めて可能になった. この方法を用いて, 有機スズ汚染及び非汚染域で採集したイボニシ (メス) を分析した結果, インポセックス罹患個体のテストステロンが高い傾向を示すことが確認された.