Memristance controlling approach based on modification of linearM—qcurve

Abstract

The memristor has broad application prospects in many fields, while in many cases, those fields require accurate impedance control. The nonlinear model is of great importance for realizing memristance control accurately, but the implementing complexity caused by iteration has limited the actual application of this model. Considering the approximate linear characteristics at the middle region of the memristance-charge (M-q) curve of the nonlinear model, this paper proposes a memristance controlling approach, which is achieved by linearizing the middle region of the M-q curve of the nonlinear memristor, and establishes the linear relationship between memristances M and input excitations so that it can realize impedance control precisely by only adjusting input signals briefly. First, it analyzes the feasibility for linearizing the middle part of the M-q curve of the memristor with a nonlinear model from the qualitative perspective. Then, the linearization equations of the middle region of the M-q curve is constructed by using the shift method, and under a sinusoidal excitation case, the analytical relation between the memristance M and the charge time t is derived through the Taylor series expansions. At last, the performance of the proposed approach is demonstrated, including the linearizing capability for the middle part of the M-q curve of the nonlinear model memristor, the controlling ability for memristance M, and the influence of input excitation on linearization errors.

Thermal rectification in graded materials

“…The study of the underlying dynamical mechanisms which determine the macroscopic properties of heat conduction has opened the fascinating possibility to control the heat current. In particular a model of a thermal rectifier has been proposed [1] and since then, the phenomenon of thermal rectification has been intensively investigated [2][3][4][5][6][7][8][9] in order to analyze and improve the rectification effect, including experimental realizations [10].…”

“…Along these lines, graded materials are attracting more and more interest: Papers with numerical [5][6][7], analytical [8,9] and even experimental [10] studies have appeared recently in the literature.…”

Controlling the Facet of ZnO during Wet Chemical Etching Its (0001¯) O‐Terminated Surface

“…A special tool was developed and used during the KOH etching to protect the frontside of the SiN x membrane and the ZnO sample on the membrane. [ 40 ] To improve the hydrophilicity of the membrane surface, the surface of the SiN x membrane windows was cleaned by O 2 plasma treatment for 5 min with power being about 100 W just before assembling the liquid cell, so that the ZnO nano/micro belts on the SiN x membrane window were also treated by O 2 plasma. About 0.2 µL de‐ionized water was loaded into the liquid cell.…”

Research on vertical deformation and predeformation control of three‐tower connected super high‐rise structure during construction

“…According to the subspace iteration method of MIDAS/Gen software, the structural eigenvalues were calculated by using the complete stiffness matrix of the structure. The analysis data of the structure's natural vibration characteristics and the deformation analysis under its own weight were used as reference basis, and the analysis results of the SAP2000 model provided by the design institute [51] were compared, which verified the correctness of the MIDAS refined model established in this paper. The results of the comparison were shown in Table 2.…”