7results about How to "Simplify design difficulty" patented technology

The application provides a kind of deep learning optical imaging system design method based on complex function neural network, comprising the following steps: step one, object distance, system focal length, F number as input, according to the ideal optical system imaging relationship, determine image distance, imaging scale ratio;Step two, according to the imaging scale ratio and the object image of ideal optical system, the image of ideal optical system is calculated;Step three, construct complex function generator network model, step four, construct discriminator network model, step five, after the establishment, training of the above-mentioned complex function neural network deep learning model, step six, use phase.The deep learning optical imaging system design method based on complex function neural network provided by the application solves the correlation between the advantages and disadvantages of the design result and the experience value of the designer, without the designer providing initial structure parameters;Greatly improve the computing ability and optimization speed.

The application belongs to the technical field of power management integrated circuits, and particularly relates to a low-voltage power rail circuit applied to a high-side floating basin of a motor driving circuit. The circuit realizes a stable power rail in the floating basin through a super source follower architecture and a bias of MOS tube threshold tracking. The circuit has the advantages that it can track the MOS tube threshold voltage to realize lower static power consumption, can realize fast transient response under different load conditions, has good anti-dv / dt noise capability, and can realize small overshoot voltage during load switching under small decoupling capacitance, thereby reducing the circuit area.

The invention discloses an ultra-high-cycle fatigue test device capable of realizing a thermal gradient environment. The ultra-high-cycle fatigue test device comprises an ultrasonic fatigue test device, a tensile test device, a high-temperature environment device, a cooling system, a temperature test device and a microscopic monitoring device, the ultrasonic fatigue test devices are arranged on the upper and lower sides of the high-temperature environment device; the tensile test device is located above the ultrasonic fatigue test device, and the cooling system is connected with the interior of the sample. According to the invention, the comprehensive service behavior test under the conditions of high temperature environment, thermal gradient and multi-stress ratio ultra-high cycle fatigue can be carried out at the same time, multiple functions are integrated, the test under complex conditions is carried out on the same experimental platform, and the performance evaluation of an aero-engine material under more real conditions is realized; the influence of the thermal gradient condition on the service strength and the failure mechanism is explored, and cooperative test research on the service behavior of the engine blade material under the influence of multiple factors such as super-long life fatigue under the high-temperature thermal gradient is realized.

The present application relates to the technical field of vehicle control, in particular to a kind of electric automobile drive anti-skid control method and system.If TCS is in the activated state, then output torque F t =F a , otherwise, the validity of brake pedal signal is judged;If valid, then output torque F t =F a , if invalid, then the slip rate λ is judged;If the slip rate λ is in the optimal slip rate interval, then drive anti-skid exit time T1 cumulative count is executed, drive anti-skid enable time T2 cumulative count is zero, until T1 is greater than drive anti-skid exit time T qu , then output torque F t =F a ;Otherwise, then drive anti-skid exit time T1 cumulative count is zero, drive anti-skid enable time T2 cumulative count is executed, until T2 is greater than drive anti-skid enable time T en , then judge whether current demand torque F a is greater than output torque limit F Limit ;If yes, then output torque F t =F a *C;If not, then output torque F t =F a .The present application saves the space in the car, simplifies the difficulty of hardware architecture design, and is conducive to the arrangement of hardware equipment.

The invention relates to the technical field of ultrasonic water meters, in particular to an online meter calibration method based on an instantaneous flow method, which abandons the traditional method of depending on a high-precision electronic scale as a standard device, and realizes full-automatic calibration of an ultrasonic water meter by adopting the instantaneous flow method. Meanwhile, the problems that in the prior art, an ultrasonic water meter generally depends on a start-stop method or a reversing method and is difficult to be compatible with an instantaneous flow method, and accurate calibration can be achieved only through customized transformation are solved, and a calibration platform specially matched with the instantaneous flow method does not need to be customized again. The instantaneous flow method is successfully integrated on a traditional meter calibration table, the technical limitation of existing equipment is overcome, full-process automation from measurement to judgment is achieved, and meter calibration efficiency is remarkably improved. Meanwhile, the core requirement of the method lies in the stability of flow output, and the harsh requirement for the control time sequence and data reading synchronism of the meter calibration table is greatly lowered. Meanwhile, the invention further provides application of the method in the actual meter calibration process and an ultrasonic water meter calibration table.

This invention provides a fully digital wireless time and frequency synchronization system and method, applicable to the fields of positioning, navigation, and timing technology. The system includes: a signal transceiver module for bidirectional time transmission with a master node via a wireless channel and recording transmission and reception timestamps; a time measurement module for calculating time and frequency deviations based on the timestamps and generating a digital frequency control word; a microelectromechanical system (MEMS) oscillator module for receiving the frequency control word via a digital interface and adjusting the output frequency in real time; and a synchronizer module for generating a second pulse signal based on the adjusted frequency. The adjusted frequency is fed back to the signal transceiver module as a local clock driver, forming a closed-loop frequency control. This invention deeply integrates high-precision time measurement with a MEMS resonator, achieving fully digital closed-loop control. While maintaining advantages such as small size, low power consumption, and vibration resistance, it significantly improves the transient response speed and long-term stability of frequency synchronization and supports rapid customization of special frequency points.

This invention discloses a cascaded low-loss bent waveguide design method based on vector synthesis. The steps are as follows: S1, the bent waveguide is regarded as a curve, and four control vectors are defined to describe the curve: the curve start point, the curve end point, a fixed distance point in the tangent direction of the curve start point, and a fixed distance point in the tangent direction of the curve end point, and the parameter vector of the curve is constructed; S2, based on the connection requirements and curvature smoothing characteristics of the bent waveguide to be designed, boundary condition constraint equations are established, and the algebraic relationship between the four control vectors is solved; S3, the structural parameters of the bent waveguide are defined, and the four control vectors are transformed into expressions related to the design parameters to be determined, namely the structural parameters and length; S4, following the order of length first and then structural parameters, with the goal of obtaining the minimum transmission loss, the unknowns in the design parameters to be determined are determined sequentially; this method has the characteristics of achieving ultra-low transmission loss and ultra-small structural size, which greatly simplifies the design process and reduces the difficulty.