584 results about "Amplitude modulation" patented technology

The invention discloses a multi-scattering SAR (Synthetic Aperture Radar) imaging simulation method, system and device based on physical consistency modeling and a medium. The method comprises the following steps: constructing a three-dimensional electromagnetic model of a target; constructing a geometric model under the working mode of the ray tracing auxiliary transmitting-receiving co-located SAR; a high-frequency electromagnetic scattering algorithm based on ray tracing is adopted, multiple scattering paths of a first order, a second order and a higher order are considered, superposition and amplitude modulation are carried out on scattering contributions of all orders, scattering field distribution of a target under the far field condition is calculated, and a far-field scattering field is obtained; performing spatial propagation mapping on the total far-field scattering field, and mapping a far-field scattering result into a radar platform near-field echo signal; correcting the amplitude of the echo signal to obtain a two-dimensional SAR near-field echo matrix; sAR imaging processing is carried out, wherein the SAR imaging processing comprises distance compression, range migration correction (RCMC) and azimuth compression. According to the invention, the authenticity and precision of SAR imaging simulation in a complex target scene are improved.

The invention relates to a display device. The display device comprises a light-emitting device and a pixel circuit. The pixel circuit comprises an amplitude modulation module, a pulse width modulation module and a switch module. A first capacitor in the pulse width modulation module is used for storing a first electric charge quantity corresponding to a pulse width data signal received by the pulse width modulation module. And a second capacitor in the amplitude modulation module is used for storing a second electric charge quantity corresponding to the amplitude data signal received by the driving unit. A connection node of the first capacitor and the driving unit is a first node, a connection node of the second capacitor and the pulse width control unit is a second node, and the switch module is connected between the first node and the second node and used for conducting the first node and the second node before a reset stage so as to neutralize charges stored in the first capacitor and the second capacitor. Therefore, the voltage of the first node is reduced, the influence on the reset signal is reduced, the problem that the light-emitting device emits light abnormally in the reset stage is solved, and the display effect of the display device is improved.

The present invention discloses an unified multiple access (MA) based system for uplink transmission of data by multiple users. The system comprises an user interface integrated transmitter modules for transmitting the data from multiple user transmitters over waveforms through a cooperative unified data grid structure including grid points, said unified data grid structure including each user transmitter allocation of a few non-overlapping grid points for loading respective data bearing symbols, with zeros loaded onto unallocated grid points. The user transmitter is configured to transmit a sparsely loaded grid resembling to the unified two-dimensional data grid structure involving data-bearing Quadrature Amplitude Modulation (QAM), where a part of available grid points of the grid as allocated is loaded with QAM symbols and remaining grid points are loaded with zero symbols. A waveform modulator corresponding to user transmitter is also provided in the present system for waveform modulation of said sparsely loaded grid as per the waveforms enabling transmission for multi-antenna reception of the waveforms to a base station or an access point.

The invention relates to the technical field of gear detection, in particular to a gear wear detection method and system of a gear motor. According to the method, firstly, all fault characteristic frequencies are obtained based on historical vibration signals of a fault gear, then vibration signals of a to-be-detected gear are divided into a plurality of local impact sub-segments, and the local frequency spectrum of each local impact sub-segment and the kurtosis of each frequency in the local frequency spectrum are obtained; fitting a fuzzy estimation signal of the vibration signal in combination with power distribution under each fault characteristic frequency in the time-frequency spectrum, and then modulating the vibration signal in combination with a motor load condition; and finally analyzing a frequency spectrum signal of the modulation vibration signal, and evaluating the early wear type of the gear to be detected. According to the method, the vibration signal is modulated by analyzing the covering interference of noise and motor load on local wear impact, and the frequency modulation effect and the amplitude modulation effect are further analyzed in the frequency domain of the modulated vibration signal, so that the early wear type is accurately distinguished, and the gear wear detection effect is improved.

An aerosol provision device or a vapor provision device including an aerosol generator or vapor generator; a driving circuit connected to the aerosol generator or vapor generator, wherein the driving circuit is configured to employ either pulse width modulation or amplitude modulation, to supply power to the aerosol generator or vapor generator; and a power source connected to the driving circuit, wherein the power source includes a hybrid ion capacitor.

Systems and devices are provided for receiving or transmitting IQ data (e.g., suitable for passband quadrature amplitude modulation (QAM)) over a wireline using pairs of baseband pulse amplitude modulation (PAM-n) signals. Encoding circuitry may map data from an input bit stream to IQ data that includes an in-phase component and a quadrature-phase component. Modulator circuitry may determine an in-phase PAM-n signal based on the in-phase component and a quadrature-phase PAM-n signal based on the quadrature-phase component. Driver circuitry may transmit the in-phase PAM-n signal and the quadrature-phase PAM-n signal across a wireline channel. The in-phase PAM-n signal may be different by 90° from the quadrature-phase PAM-n signal. This may enable a remote receiver on the wireline channel to detect the in-phase PAM-n signal independently of the quadrature-phase PAM-n signal.

An optical frequency generation system (100), comprising: - reference atoms (7) in a gas phase, - an interrogation laser source (1) configured to emit an interrogation signal (101) comprising a first optical frequency suitable for exciting a two-photon transition in said reference atoms (7), said interrogation signal (101) being configured to interact with said reference atoms (7) in a Doppler-free scheme; - optical frequency modulation means (31, 31a, 31b) configured to adjust said first optical frequency and to modulate said first optical frequency at a first modulation frequency f1; - an optical sensor (9) configured to detect a fluorescence signal (110) from said reference atoms (7); - a first control loop (10) configured to lock said first optical frequency to a resonance frequency of said two-photon transition, said fluorescence signal (110) being input into the first control loop (10); - a mitigation laser source (2) configured to emit a mitigation signal (102) comprising a second optical frequency selected to produce a light-shift of said two-photon transition of opposite sign of the light-shift produced by the interrogation signal (101); characterized in that the optical frequency generation system (100) further comprises: - optical amplitude modulation means (5) configured to modulate the amplitude of the interrogation signal (101) and of the mitigation signal (102) at a second modulation frequency f2, and - a second control loop (20) configured to adjust the relative amplitude of the mitigation signal (102) with respect to the interrogation signal (101) such as to cancel the effective light-shift of the combined interrogation (101) and mitigation (102) signals.

The invention discloses a sine frequency modulation harmonic error compensation method based on Bessel function modulation characteristics, and relates to the technical field of sine frequency modulation nonlinear parameter compensation and high-precision measurement of target absolute distance based on multi-wavelength interference. The problem that the constant phase demodulation precision is insufficient due to the fact that carrier harmonic waves, accompanying amplitude modulation and modulation depth errors cannot be effectively suppressed due to laser modulation nonlinearity in existing sine frequency modulation distance measurement is solved. According to the method, after sine frequency modulation interference signals are collected, high-pass filtering is carried out to remove low-frequency components, Hilbert transform is carried out to remove envelope suppression associated amplitude modulation, window function frequency mixing is carried out to extract modulation depth, a matched carrier containing second harmonics is constructed, and frequency modulation harmonic parameter optimization is achieved through baseband amplitude maximization. And finally, carrying out orthogonal demodulation on the compensated interference signal to obtain a high-precision constant phase. The method is suitable for high-precision multi-wavelength interference ranging, precision displacement measurement and optical metering systems.

An enhanced link adaptation (eELA) method includes receiving, by a responding device from a requesting device, a physical layer protocol data unit (PPDU) including an eELA request message, determining, by the responding device, an eELA feedback message comprising unequal quadrature amplitude modulation (UEQM) information across a plurality of spatial streams based on at least the number of spatial streams derived from the eELA request message or the PPDU, and transmitting, from the responding device to the requesting device, the eELA feedback message. The UEQM information indicates an effective Signal-to-Noise Ratio (SNR) per spatial stream or a derivative of the effective SNR per spatial stream.

The invention belongs to the technical field of computer vision and computer graphics, and discloses a multi-view three-dimensional reconstruction method and device based on cross-domain feature fusion and a medium, and the method comprises the steps: carrying out the cross-feature-domain coding of an initial feature token generated by a multi-view image, according to the coding, characteristics are decomposed into low-frequency components and high-frequency components through dual-tree complex wavelet transform, amplitude modulation is carried out on the high-frequency components to enhance details, and space-frequency fusion characteristics are generated; variance embedding weighted combination is carried out on the multi-view space-frequency fusion features, the combination generates a weight by calculating the variance of each feature token, adaptive weighted clustering is carried out based on the weight, and fused multi-view features are generated; and performing three-source attention decoding on the fused features, and performing cross-domain attention calculation and up-sampling by taking static embedding as query, taking the space-frequency fused features as keys and taking the fused multi-view features as values, thereby finally generating a three-dimensional voxel reconstruction result of the target object.

The invention belongs to the technical field of power equipment fault diagnosis, and particularly discloses a knowledge distillation-based 1D-CNN online partial discharge identification method, which comprises the following steps of performing Fourier transform on an original signal and then implementing four data enhancements of amplitude modulation, phase modulation, frequency band enhancement and frequency domain noise injection; constructing a multi-branch one-dimensional convolutional neural network to extract time-frequency features, and training a teacher model in combination with residual connection and an SE attention mechanism; compressing the teacher model into a lightweight student model by adopting a knowledge distillation strategy of a preset temperature parameter and a weight coefficient; the student model is converted into a mobile terminal compatible format, and a mobile phone APP is established through a QT upper computer; and online real-time identification is realized. According to the method, the problem of sample imbalance is effectively relieved, in addition, the knowledge distillation realizes model volume compression and reasoning speed increase while keeping relatively high accuracy, the calculated amount is small, the real-time performance is high, and the precision is high.

A diamond magneto-optical sensor includes: a diamond that includes a color center with an electronic spin and is irradiated with excitation light, and an irradiation unit that irradiates the diamond with the excitation light of the color center and electromagnetic waves for magnetic resonance, wherein the irradiation unit receives modulated light having been subjected to amplitude modulation, and a modulation frequency of the modulated light is included in a microwave frequency band.

The invention discloses a motor fault diagnosis method and a motor controller. The method comprises the following steps: acquiring a near-field electromagnetic noise audio signal and a vibration acceleration signal of a motor shell when a motor runs; performing short-time Fourier transform on the near-field electromagnetic noise audio signal, and extracting an original electromagnetic voiceprint feature vector representing an internal electromagnetic state of the motor; the vibration acceleration signal is used as a modulation source, amplitude modulation processing is carried out on the original electromagnetic voiceprint feature vector, and a modulated electromagnetic voiceprint feature vector is generated; performing time domain coherence calculation on the original electromagnetic voiceprint feature vector and the modulated electromagnetic voiceprint feature vector to generate a two-dimensional electromagnetic-mechanical voiceprint interference map; and inputting the electromagnetic-mechanical voiceprint interference atlas into a convolutional neural network CNN, and outputting a final motor fault diagnosis result. According to the embodiment of the invention, the method can improve the discrimination of fault features, and achieves the high-precision diagnosis of motor faults under a complex working condition.

The invention discloses a time domain signal reproduction conversion method and device of an impact response spectrum and a medium. Belongs to the field of impact mechanical environment related design and test, and particularly belongs to the technical field of time domain signal reproduction of an impact response spectrum. The technical problem that the real time domain energy distribution condition of the time domain waveform corresponding to the impact response spectrum cannot be fully reflected in the prior art is solved. In the fundamental wave amplitude modulation, a Weibull sine window is adopted to process sine wavelets, and the time domain peak position and the decay time can be adjusted by utilizing the characteristic that a Weibull distribution function curve can change according to parameter adjustment. And waveform adjustment is realized by using a sine function, and the low-error convergence capability of the time domain waveform impact response spectrum is improved. Error control of the impact response spectrum of the reproduced time domain signal and the target impact response spectrum is superior to + / -2dB, parameterization control is carried out on the time domain waveform peak position and the decay time, and the distribution condition of impact energy under the time domain and frequency domain conditions is effectively reproduced.

A pulse amplitude modulation 4-level (PAM-4) physical layer (PHY) serializer / deserializer (SerDes) receiver is provided. The receiver may include an analog-front-end (AFE) block to receive a transmit signal, an analog-to-digital converter (ADC) block to convert the transmit signal into a digital signal at sampling intervals defined by a sampling clock signal, a clock and data recovery (CDR) circuit to receive the digital signal from the ADC block and extract a recovered clock signal and a recovered data stream, the recovered data stream containing a sequence of symbols with amplitude values corresponding to four levels of PAM-4, a phase integrator (PI) to generate the sampling clock signal for the ADC block based on the recovered clock signal, and a feedforward phase correction (FFPC) block to receive the recovered data stream and generate a receive signal.

A wireless communication device includes an antenna array with multiple antenna elements, an array of power amplifiers, and an array of phase shifters. Each antenna element is coupled to a power amplifier and a phase shifter. The device also includes transmitter circuitry coupled to the antenna array to encode a constant amplitude signal, which includes a power amplifier enable code to indicate which power amplifiers are to run in a subsequent data sample and a beam direction code to control beam direction of each phase shifter of the array of phase shifters in the subsequent data sample. The constant amplitude signal is then provided to the array of antenna elements and amplitude and phase modulation is combined over an air interface into a composite modulated signal.

The invention discloses a power amplification module and a control method and system thereof, and belongs to the technical field of plasma generators. Wherein the PDM driving unit adopts a multi-phase PDM voltage reduction amplitude modulation technology and is used for generating two paths of symmetrical and complementary RF driving signals from an external RF driving signal through dead zone delay and logical operation; the BUCK voltage regulating unit comprises a plurality of BUCK circuits connected in parallel and is used for reducing input direct-current voltage into amplitude-modulated direct-current voltage; the RF driving unit is used for generating two paths of symmetrical and complementary RF driving signals; and the H-bridge conversion unit is used for receiving two paths of symmetrical and complementary RF driving signals generated by the RF driving unit and inverting the amplitude-modulated direct-current voltage supplied by the preceding-stage BUCK voltage regulating unit into a radio-frequency power signal to be output to a load. According to the power amplification module, the control method and the control system provided by the invention, the contradiction and unification of high-frequency response and ultra-low loss are realized through the mutual synergistic effect of the multi-phase PDM modulation and the D-type power amplifier topological structure.

Various aspects of the present disclosure generally relate to wireless communication. Some aspects more specifically provide procedures and configurations used to perform, at a transmitter, probabilistic amplitude shaping (PAS) of quadrature amplitude modulation (QAM) communications using non-binary polar coding (NBPC). NBPC differs from binary polar coding (BPC) in that BPC uses a binary-input channel whereas NBPC uses a non-binary input channel. For example, while BPC uses a log likelihood ratio (LLR) with a single value corresponding to a given bit to be shaped, NBPC may use a probability mass function (PMF) to define or represent amplitude shaping target values. As another example, aspects use non-binary transformations, which reduce the number of passes to shape q bits from q passes (for BPC) to 1 pass (for NBPC).

The invention discloses an electric reactor vibration detection method, device and equipment and a medium, and relates to the technical field of electric power detection, and the method comprises the steps: obtaining an electric drive signal converted from the mechanical vibration of an electric reactor; based on the electric driving signal, controlling the working state of the passive vibration measurement circuit so as to perform frequency multiplication processing and amplitude modulation on the input radio frequency excitation signal to obtain a modulated harmonic signal; performing spectral analysis on the modulated harmonic signal to obtain carrier component and sideband component information, and determining a vibration frequency estimation value of the reactor based on the carrier component and sideband component information; performing inversion calculation based on the sideband component information, and determining a duty ratio estimation value corresponding to the electric driving signal; wherein the duty ratio estimated value represents the conduction time proportion of the passive vibration measurement circuit controlled by the electric driving signal; and querying a preset calibration relation based on the vibration frequency estimation value and the duty ratio estimation value to obtain the vibration acceleration of the reactor. The method can obtain an accurate detection result.

The present disclosure provides a method (100) in a network device. The method (100) includes: transmitting (110) Downlink Control Information, DCI, to a terminal device, the DCI containing information from which a TBS index is derivable. The BS index is usable to determine a TBS from a set of TBSs including TBSs usable with Quadrature Phase Shift Keying, QPSK, and TBSs usable with 16-Quadrature Amplitude Modulation, 16-QAM. When the DCI is for a Narrowband Physical Downlink Shared Channel, NPDSCH, the TBSs usable with 16-QAM are determinable by the terminal device based on a deployment mode.

The invention discloses a signal enhancement super-permeable membrane for multi-system and multi-band wireless communication and a preparation method thereof. Relates to the technical field of electromagnetic regulation. The signal enhancement ultra-permeable membrane is composed of a large number of equilateral metal pattern units, a PET film layer and an electric smelting quartz glass dielectric layer. Each metal pattern unit is of an axially symmetric I-shaped metal structure with adjustable length and rotation angle; the transmission phase and amplitude modulation of incident electromagnetic waves can be realized by adjusting the length of the metal wire, the radian of the metal ring and the rotation angle. Full-wave simulation shows that the metal units with different sizes are orderly arranged on the PET film and are deployed on the two sides of the electric smelting quartz glass, so that macroscopic regulation and control of incident electromagnetic waves with different frequency bands can be realized respectively, and the signal gain peak value exceeds 30dB; signal enhancement of multi-band wireless communication can be realized by adjusting structural parameters of the unit structure.

The invention relates to a power battery internal structure damage detection method, system and device and a medium. The method comprises the following steps: firstly, acquiring a battery internal medium interface reflection signal, and extracting first characteristic data containing a reflection wave amplitude value and frequency distribution; charge and discharge vibration signals are synchronously collected, and second characteristic data containing characteristic frequency and amplitude modulation are extracted through wavelet transform; and generating comprehensive feature data containing ultrasonic and vibration features by using a pre-trained neural network fusion algorithm, inputting the comprehensive feature data into a damage evaluation model to position a damage position, and generating region description. And finally, in combination with the region description, the quantized numerical value and the matching degree with a preset feature library, identifying a damage type and generating a structured detection report. According to the method, accurate positioning of the damage position, quantitative evaluation of the degree and accurate identification of the type are realized, the problems of insufficient positioning precision and low type identification accuracy in a traditional detection method are solved, the safety of the power battery is improved, and the service life of the power battery is prolonged.

The invention discloses a deceptive signal injection and control method for an MEMS inertial sensor. The invention relates to the technical field of safety protection of MEMS (micro-electromechanical system) inertial sensors, and in the method, a resonant frequency interference signal subjected to amplitude modulation (AM) and phase modulation (PM) is injected into a target sensor to simulate a Coriolis force effect generated by real inertial input (such as angular velocity), so that a physically static MEMS device outputs preset erroneous motion data which seems legal, and the erroneous motion data is detected. And therefore, cheating on an upper-layer control system (such as an automatic driving attitude control unit) is realized. According to the method, by accurately controlling modulation parameters (such as modulation depth and phase offset) and a signal injection time sequence, a false inertial measurement value with high concealment and credibility can be generated, and the method is suitable for scenes such as sensor safety test, anti-interference algorithm verification and fault simulation.

The invention discloses a phase and amplitude modulation noise iterative compensation method and system for an optical frequency domain reflectometer, and belongs to the technical field of optical measurement and sensing, and the phase and amplitude modulation noise iterative compensation method for the optical frequency domain reflectometer comprises the steps: collecting an auxiliary interferometer signal and a measured device interference signal; extracting phase information of the auxiliary interferometer signal, and obtaining amplitude modulation noise information based on the phase information; carrying out phase noise suppression on the interference signal of the tested device, then carrying out Fourier transform to obtain a frequency spectrum, and calculating background noise and a signal peak value; generating an amplitude-modulated noise signal based on the signal peak position and the amplitude-modulated noise information; subtracting the amplitude modulation noise signal from the frequency spectrum to obtain a compensated signal; when the signal-to-noise ratio of the signal peak value to the background noise is lower than a set threshold value, iteration is stopped, and phase and amplitude modulation noise iteration compensation is completed. According to the invention, the system compensation cost can be saved, the compensation precision is improved, the system complexity is reduced, the robustness is improved, and the return loss measurement precision is improved.

An optical device includes a generator, a light emitter, a modulator, an optical amplifier, a current source, a storage, and a controller. The generator generates an electric signal of a multilevel amplitude modulation method. The light emitter emits laser light. The modulator modulates the laser light using the electric signal and outputs an optical signal. The optical amplifier optically amplifies the modulated optical signal according to a drive current. The current source adjusts the drive current to be supplied to the optical amplifier. The storage previously stores an information with respect to input-output characteristics of the optical signal in the optical amplifier relative to drive current value of the drive current. The controller acquires, from the storage, the input-output characteristics corresponding to the drive current value of the drive current supplied to the optical amplifier and controls the electric signal based on the acquired input-output characteristics.

This invention discloses a single-motor amplitude-adjusting conveying mechanism and intelligent platform system, including a base, on which a support assembly, a conveying assembly, an amplitude-adjusting assembly, and a drive motor are mounted. Both the conveying assembly and the amplitude-adjusting assembly are drive-connected to the drive motor. The support assembly includes a fixed frame and a movable frame that can move relative to each other, forming a conveying channel between them. The conveying assembly is disposed within the conveying channel. The amplitude-adjusting assembly includes a clutch and a lead screw, which is rotatably connected to the movable frame. When the clutch is engaged, the lead screw can rotate, causing the movable frame to move relative to the fixed frame along the axial direction of the lead screw. When the clutch is disengaged, the lead screw is stationary, and the drive motor only drives the conveying assembly. This invention allows the conveying assembly and amplitude-adjusting assembly to share a single motor, eliminating a power unit compared to traditional methods, simplifying the structure of the conveying mechanism, resulting in a smaller size, less space occupation, lower cost, and easier widespread application.

The application relates to a display device. The pixel circuit in the display device comprises an amplitude modulation module and a pulse width modulation module. The amplitude modulation module comprises a first capacitor, a first coupling control unit, a second coupling control unit and a driving unit. In a data writing stage, the first coupling control unit receives and outputs a preset voltage signal to a first end of the first capacitor; the driving unit receives a PAM data signal and stores the PAM data signal to the first capacitor. In a comparison light emitting stage, the second coupling control unit receives and outputs a first power voltage signal to the first end of the first capacitor, and a voltage difference at the first end of the first capacitor is coupled to the driving unit. Under the action of a first light emitting control signal, the driving unit outputs a driving current signal to a light emitting device based on the voltage difference, the PAM data signal and the first power voltage signal; wherein the second coupling control signal is valid earlier than the first light emitting control signal. The display consistency of the display device is high.

A high-frequency power supply system according to the present disclosure supplies high-frequency power to a load. The high-frequency power supply system comprises: a first high-frequency power supply that can supply first high-frequency power to the load by outputting a first high-frequency voltage having a first fundamental frequency from a first high-frequency voltage output unit toward the load; and a first slave device. The first high-frequency power supply has: a first high-frequency power supply setting value information output unit that outputs a first high-frequency power supply setting value corresponding to the elapsed time or a command signal corresponding to the first high-frequency power supply setting value on the basis of first high-frequency power supply setting value information indicating the relationship between the elapsed time from a starting point of a cycle within the time of one cycle of amplitude modulation and the first high-frequency power supply setting value; and a first slave device synchronization signal output unit that outputs a first slave device synchronization signal in accordance with the time at which the first slave device setting value should be changed on the basis of first slave device time information indicating the relationship between the elapsed time and the time at which the first slave device setting value used in the first slave device should be changed. The first slave device has a first slave device setting value information output unit that outputs the first slave device setting value corresponding to the elapsed time or a command signal corresponding to the first slave device setting value on the basis of the first slave device synchronization signal, and first slave device setting value information indicating the relationship between the elapsed time and the first slave device setting value.

The invention relates to a core temperature sensor (CTS) for use with a microwave cooking appliance that generates microwaves within a specific microwave frequency band for cooking food, wherein the core temperature sensor (CTS) comprises: at least one temperature sensor (TS), an antenna (ANT), a high-frequency oscillator (1) whose output signal can be fed into the antenna (ANT) and whose signal frequency lies outside the microwave frequency of the microwave cooking appliance, a modulation device (OOK) configured to generate a pulse train from the output signal of the high-frequency oscillator (1) by means of amplitude modulation, which corresponds to digital temperature data generated by means of the at least one temperature sensor (TS), and an electrical energy storage device (BAT) for supplying electrically operated components (MCU, TS, OSZ-AMP) of the core temperature sensor (CTS).The invention also relates to a system comprising a core temperature sensor and a cooking device, comprising a receiver for receiving electromagnetic waves emitted by the core temperature sensor and a control device configured to operate the cooking device based on information contained in the received electromagnetic waves.

The utility model discloses an inductance encoder for a rotating motor, which relates to the technical field of encoders and comprises a signal receiving and demodulating module, the signal receiving and demodulating module comprises a rotor plate, a stator coil plate and a dual-channel induction inductance sensor chip, the rotor plate is connected with a rotating shaft portion of the rotating motor, and the stator coil plate is connected with the inductance sensor chip. The stator coil plate comprises an exciting coil and a receiving coil, non-contact electromagnetic induction is formed among the rotor plate, the exciting coil and the receiving coil, and the inductance sensor chip is used for demodulating amplitude modulation signals on the receiving coil and converting the amplitude modulation signals into sine and cosine signals; the signal processing module is used for receiving the sine and cosine signals output by the inductive sensor chip and processing the sine and cosine signals to obtain signal information; the signal decoding and outputting module is used for receiving the signal information and converting the signal information into angle position information of a motor rotor plate; the inductance encoder has the characteristics of high anti-interference capability, strong environmental adaptability and low cost.