5 results about "Electrical tuning" patented technology

The invention relates to the technical field of signal processing, and discloses an anti-interference electrically tunable wave trap operation control method and system, and the method comprises the steps: collecting an input signal of an adjustable wave trap group, and employing adaptive Kalman filtering to dynamically suppress strong electromagnetic noise to construct a reinforcement learning state vector, and generating an optimal action instruction of the tuning module by using the deep Q network reinforcement learning model so as to control the tuning module to perform parameter adjustment on the adjustable wave trap group, and finally updating and adjusting the deep Q network reinforcement learning model and the adaptive Kalman filtering based on an actual effect index. Therefore, the electrically tunable wave trap high-precision operation control method based on adaptive Kalman filtering and depth Q network depth collaboration is constructed, the electrically tunable wave trap can be helped to stably maintain high-precision wave trapping performance in a scene of complex dynamic interference and strong noise superposition, and the performance of the electrically tunable wave trap is improved. And many limitations of the traditional scheme in the aspects of interference adaptation, precision control, multi-frequency coordination and stability are thoroughly solved.

The application relates to a self-enclosed self-adaptive amplitude equalizer. The equalizer comprises an equalization circuit, a tuning branch one and a tuning branch two adopting an electric tuning topological structure, the resistance values of the tuning branch one and the tuning branch two are adjusted to realize continuous slope adjustment of-10 dB to +10 dB in a 300 MHz to 1200 MHz frequency band; a main transmission circuit, an input end RFin and an output end RFout of which are respectively used as an input end and an output end of the equalizer; and the outputs of the tuning branch one and the tuning branch two are connected to a fusion node A on the main transmission circuit; a data acquisition and operation circuit, temperature and amplitude-frequency response data are collected in real time through an MCU microcontroller, and a pre-stored temperature-frequency-compensation lookup table and an aging model are combined to calculate a compensation control signal. The equalization circuit slope is adjusted through SPI control of a digital potentiometer and a varactor, and closed-loop self-correction is realized without manual intervention.

The application relates to the technical field of signal processing, and discloses an anti-interference electrically tunable wave trap operation control method and system, which comprises the following steps: collecting input signals of an adjustable wave trap group, constructing a reinforcement learning state vector by dynamically suppressing strong electromagnetic noise by using adaptive Kalman filtering, generating optimal action instructions of a tuning module by using a deep Q network reinforcement learning model, controlling the tuning module to adjust parameters of the adjustable wave trap group, and finally updating and adjusting the deep Q network reinforcement learning model and the adaptive Kalman filtering based on actual effect indexes. Thus, the application constructs an electrically tunable wave trap high-precision operation control method based on deep cooperation of adaptive Kalman filtering and a deep Q network, can help the electrically tunable wave trap to stably maintain high-precision wave trapping performance in a scene with complex dynamic interference and strong noise superposition, and completely solves many limitations of traditional schemes in interference adaptation, precision control, multi-frequency cooperation and stability.

The invention provides a multi-band spectrum selective filtering method based on a programmable metasurface. The multi-band spectrum selective filtering method comprises the steps that a layered damping supporting structure is constructed below a substrate of a programmable metasurface array; preparing a self-compensation type resonance unit array on the layered damping supporting structure; constructing an array-level phase synchronization control network, and carrying out local electric tuning compensation and global phase synchronization on the self-compensation type resonance unit array based on a distributed sensing signal; establishing a sound pressure monitoring and spectrum feedback correction path, and performing adaptive phase correction on the identified acousto-optic coupling interference area by associating sound pressure distribution with time sequence change of a transmission spectrum; according to the method, the programmable metasurface is operated in the vibration and sound pressure environment, a stable multi-band spectrum filtering result is output, and the method can cooperatively solve micro-deformation phase disturbance from the aspects of structural design and active control, so that the spectrum filtering stability of the programmable metasurface in the vibration and sound pressure environment is improved.

The utility model discloses an axial adjustment shock absorption connecting structure of an electric adjustment steering column, which comprises a motor, the motor is connected with a shell of the electric adjustment steering column through a mounting pin, the output end of the motor is connected with a screw rod, a nut is mounted on the screw rod, and the motor is connected with the shell of the electric adjustment steering column. An upper installation support and a lower installation support are installed on the upper side and the lower side of the nut respectively, damping inserts are installed at the positions, making contact with the nut, of the upper installation support and the lower installation support, and a damping sleeve is installed at the position between the outer side of the installation pin and the motor. By arranging the damping insert and the damping sleeve, damping can be conducted in the installation and working process of the motor and the nut, and the problem that low-frequency sound, trill and adjustment sound in two directions are inconsistent in the axial adjustment process of the electrically-controlled pipe column is solved.