10 results about "Vector mode" patented technology

The application discloses a permanent magnet synchronous motor model prediction torque control method based on a hybrid mode optimization. The method first constructs a reference voltage vector through a torque error target function and a discretization prediction model of the permanent magnet synchronous motor, and then designs a hybrid mode optimization algorithm. The algorithm first designs a double-vector mode optimization on the sector boundary of a voltage space vector diagram, and then designs a three-vector optimization mode based on a discrete space vector modulation inside the sector. The optimal synthesized voltage vector obtained by the hybrid mode optimization algorithm is transmitted to a voltage error target function to realize the switching of the two modes, so that the control execution mode and the optimal synthesized voltage vector are determined. The control method disclosed by the application has high freedom to adjust the amplitude and position of the synthesized voltage vector, and thus has high steady-state performance of the control system and fast torque dynamic response in the full speed range.

The embodiment of the invention provides a vector data processor, an instruction processing method and a system on chip, and the method comprises the steps: determining an instruction calculation mode of a vector instruction according to vector mode configuration information after obtaining the vector instruction needing to be subjected to vector operation; the vector configuration information comprises configuration information for adjusting a data path executed by the current vector through the size of the data block. According to an instruction calculation mode, determining one or more execution assembly lines in the N execution assembly lines for the vector instruction; and executing vector operations corresponding to the vector instructions by execution assembly lines in the vector floating point execution unit respectively. The scheme provided by the invention supports a mixed width calculation mode, so that the vector data processor has the capability of adjusting the data path mode executed by the current vector through the size of the data block, and the throughput of processing small block data is improved; the performance of a large bit width vector register architecture processor when processing software loads with mixed size data block characteristics is improved.

The application provides a method, device and system for light field vector mode conversion, the method comprising: acquiring a cylindrical vector beam field, a fundamental mode Gaussian light array field and a first geometric phase multi-plane light transformation field; determining a first light field and a second light field based on the cylindrical vector beam field, the fundamental mode Gaussian light array field and the first geometric phase multi-plane light transformation field; acquiring a second geometric phase corresponding to a preset condition based on a difference between orthogonal basis vectors of the first geometric phase, the first light field and the second light field and the preset condition; determining a second geometric phase multi-plane light transformation field by using a vector wavefront matching mode based on the second geometric phase; and converting the fundamental mode Gaussian light array field and the cylindrical vector beam field based on the second geometric phase multi-plane light transformation field, thereby realizing multiplexing and demultiplexing of the cylindrical vector beam field, greatly improving the channel capacity of the optical fiber and improving the transmission efficiency of the optical fiber communication.

The embodiment of the present application provides a vector data processor, an instruction processing method and a system on chip, after a vector instruction needing vector operation is acquired, a vector mode configuration information is used to determine an instruction calculation mode of the vector instruction, the vector configuration information includes configuration information of a data path of current vector execution adjusted by a data block size, according to the instruction calculation mode, one execution pipeline or multiple execution pipelines in the N execution pipelines are determined for the vector instruction, and the execution pipelines in the vector floating point execution unit respectively execute vector operations corresponding to the vector instruction. The scheme provided by the present application supports a mixed width calculation mode, so that the vector data processor has the ability to adjust the data path mode of current vector execution by the data block size, improves the throughput of processing small block data, and improves the performance of a large bit width vector register architecture processor when processing a software load with a mixed size data block characteristic.

This invention belongs to the field of bearing fault monitoring technology, specifically relating to a precision bearing full-lifecycle fault early warning method based on multi-source vibration signal decoupling. The method includes: acquiring vibration signals from three channels of the bearing; calculating the impact activity level for the current time window based on the local energy of all micro-segments of the spatial vector mode sequence and the number of times the spatial vector mode in the spatial vector mode sequence is greater than the mean of the spatial vector mode sequence; calculating the autocorrelation coefficient and skewness coefficient of the spatial vector mode sequence and obtaining the background noise coupling strength; obtaining the envelope spectral entropy of the spatial vector mode sequence and weighting it using the impact activity level and the background noise coupling strength to obtain a fault characteristic index; and outputting a graded early warning based on the fitting slope of the fault characteristic index for multiple consecutive time windows and an early warning threshold. This invention overcomes the masking of weak features by strong background noise, significantly reduces early missed and false alarms, and achieves high-precision monitoring throughout the entire lifecycle.

The application relates to the technical field of digital signal processing, and discloses a high-precision and low-delay Nth root solving method and a hardware implementation circuit, wherein the method comprises the following steps: calculating the natural logarithm lnR of a radicand R through a generalized hyperbolic high-base CORDIC algorithm in a vector mode; calculating the ratio lnR / N of the natural logarithm lnR and an Nth root of the radicand through a linear high-base CORDIC algorithm in the vector mode; calculating the hyperbolic cosine value cosh(lnR / N) and the hyperbolic sine value sinh(lnR / N) of the ratio lnR / N through a generalized hyperbolic high-base CORDIC algorithm in a rotation mode; and calculating the sum of the hyperbolic cosine value cosh(lnR / N) and the hyperbolic sine value sinh(lnR / N) to obtain the Nth root solution R^(1 / N) of the radicand R. The method and the device can reduce the iteration times in the calculation process, thereby reducing the delay of the Nth root solution, making the scheme adapt to scenes with high timeliness requirements, and reducing the chip area required for implementation, and the implementation power consumption and cost are reduced under the premise of ensuring the precision.

The invention discloses a magneto-dependent sensor immunity test device and method for simulating a complex multi-dimensional magnetic field. The device comprises a signal simulation and generation unit, a magnetic field generation unit, a magnetic field measurement and monitoring unit and a closed-loop control unit. The signal simulation and generation unit generates a customizable driving electric signal according to the target waveform data; the magnetic field generation unit generates composite time-varying magnetic fields which are different in direction and can be superposed in a vector mode in a magnetic field generation chamber through at least three independent excitation coils which are arranged in a nested mode. The magnetic field measuring and monitoring unit monitors and feeds back an actual magnetic field signal in the field in real time; the closed-loop control unit dynamically adjusts signal output by comparing an actual signal with a target signal to form high-precision closed-loop control. By means of multi-axis coil nesting and a closed-loop vector control mechanism, flexible generation and accurate control of an ultra-wideband and high-strength space vector magnetic field are achieved, and the efficiency and reliability of product research and development and quality verification are improved.

The invention provides a super lens, an optical element and a light beam modulation method, which can be applied to the field of super lenses. The super lens comprises a plurality of micro-units which are arranged at intervals in a first direction; wherein the plurality of micro-units comprise at least one first micro-unit, and the first micro-unit has a first rotating angle relative to the first direction, so that the extension direction of the first micro-unit is vertical to the polarization direction of the first light beam with the first high-order vector mode; the first micro unit is used for selectively allowing the first light beam to transmit under the irradiation of at least two light beams including the first light beam and reflecting other light beams in the at least two light beams; in the process of transmitting the first light beam, wavefront modulation is carried out on the first light beam based on the structure size of the first micro-unit, so that a first target light field is formed based on the modulated first light beam; wherein the at least two light beams have different high-order vector modes with respect to each other.

Photonics units for vector-vector multiplication, matrix-vector multiplication, matrix-matrix multiplication, batch matrix-matrix multiplication, and tensor-tensor multiplication are described. Multiplication is performed through coherent mixing and square-law detection. There are many dimensions-wavelength, vector mode, quadrature, and spatial-three that can be used to build photonic accelerators. An encoded input vector or input matrix is fan-out into the required number of copies and mixed with the corresponding encoded local oscillators containing weight vectors, where the weight vectors comprise a weight matrix. Any subset of two (three) dimensions can be used to construct a photonic accelerator for matrix-vector (matrix-matrix) multiplication. Multiple dimensions can be combined into hyper-dimensions to increase scalability. Each dimension, each non-overlapping subset of dimensions, or each non-overlapping subset of hyper-dimensions can be independently used to construct a photonic tensor accelerator (PTA) for batch matrix multiplication or tensor multiplication operations.

The invention provides a photoetching mask imaging method considering a vector TCC implicit operator of polarization aberration and Lanczos decomposition. The method comprises the following steps: determining a photoetching imaging model based on a mask frequency spectrum and an effective source point set; constructing a complex value Jones pupil matrix according to the polarization aberration, the defocus phase and the aperture constraint, and sampling and splicing the pupil matrix by using the polarization intensity component of the effective source point to form a center frequency domain shift pupil column vector library; in the solving process, based on the vector library, an implicit vector cross transfer function operator is realized in an operator multiplied vector mode, and the characteristic value and the characteristic vector of the implicit operator are solved by using a Lanczos algorithm so as to obtain a central frequency domain block of a coherent component decomposition (SOCS) kernel function; and in combination with the mask frequency spectrum and each kernel function, weighting and accumulating according to characteristic values to obtain a space image of the mask. According to the method, explicit construction of a high-dimensional TCC matrix is avoided, physical consistency is guaranteed, meanwhile, memory overhead is remarkably reduced, and the simulation efficiency of a photoetching imaging system is improved.