8753 results about "Electric drive" patented technology

An energy storage floor assembly for a motor vehicle having an electric drive includes an electrical energy storage device accommodated in a storage housing and arranged on the bottom side of a vehicle floor. At least one longitudinal beam is arranged within the storage housing. The front end of the longitudinal beam, viewed in the vehicle direction, is connected at least indirectly to a crossbeam component which is arranged in the region of a front-end structure and to which a front axle carrier is also attached. A load transfer element is installed between a rearward region of the front axle carrier and the front end of the longitudinal beam, which load transfer element has a front support region on the front end thereof and a rear support region on the rear end thereof. In an event of an accident-induced backward movement of the axle carrier as a result of a collision, the axle carrier can be supported on the front support region of the load transfer element, the rear support region of which can be supported at least indirectly on the longitudinal beam.

The invention relates to the technical field of new energy automobile thermal management, in particular to a direct cooling and heating management system and method in an automobile power battery. The method comprises the following steps: acquiring vehicle real-time operation condition data and battery pack state monitoring data; working condition mode recognition processing is conducted according to the vehicle real-time operation working condition data, and vehicle working condition mode feature data are generated; performing thermal load demand analysis on the battery pack state monitoring data based on the vehicle working condition mode characteristic data to obtain dynamic thermal load demand data of the battery pack; and according to the dynamic thermal load demand data of the battery pack, refrigerant demand quantity calculation and analysis are carried out, the refrigerant supply capacity of the current direct cooling system is evaluated, and refrigerant supply and demand matching feature data are obtained. The specific requirements of three heat sources of the battery, the motor and the cockpit for the refrigerant flow are quantified, and a refrigerant distribution strategy is formed according to the proportional relation, so that the safety of the battery is improved, and the driving comfort and the working stability of the electric driving system are also guaranteed.

The invention relates to the technical field of electric drive transmission system service life prediction, and discloses an AI-based electric drive transmission system comprehensive service life prediction method, which comprises the following steps: acquiring electric drive system operation parameters and mechanical part degradation data; arranging the data into a system operation full-period input tensor and a component degradation full-period input tensor, and respectively extracting multi-order feature tensors through a bidirectional recurrent neural network and a gated time convolutional network; performing cross-modal fusion by using a cross attention fusion network in combination with physical constraints to obtain a system-component degradation fusion feature vector; and after dimension reduction, inputting a multi-layer perceptron network output life prediction value, and generating a residual service life interval with confidence in combination with historical cases. The method integrates multi-source data, realizes cross-domain feature dynamic association and physical constraint fusion, improves the precision and reliability of life prediction, is suitable for intelligent operation and maintenance of the electric drive system, and provides a scientific basis for equipment maintenance.

The invention discloses an inverter intelligent control method based on a self-adaptive algorithm, and relates to the technical field of inverter intelligent control, and the method comprises the steps: multi-source temperature collection and environment recognition, machine learning-based electric-thermal coupling prediction, self-adaptive inverter parameter optimization, and cooperative thermal management and fault diagnosis self-repairing. According to the high-temperature or low-temperature failure risk of the motor and the inverter under the extreme climate, temperature distribution and load information are obtained in real time, the temperature rise trend is predicted in advance, and the current, voltage and modulation strategy of the inverter are actively adjusted, so that safe derating or torque compensation is achieved; multi-sensor cross validation and observer fusion are carried out when sensors drift or devices are aged, stable operation and efficient energy utilization of the system are kept, and the drivability and the whole vehicle reliability in an extreme environment are remarkably improved; in the process, fault diagnosis and self-repairing can be further improved through online model updating, and the durability and economical efficiency of the electric drive system are improved.

A combined floor assembly and energy storage device for an electrically driven passenger car includes a floor assembly on the lower face of which an energy storage device of an electric drive of the passenger car is arranged. A holding element, by which a rear end region of the energy storage device is held on the lower face of the floor assembly, and a rear cross-member, which is arranged on the lower face of the floor assembly and behind the energy storage device in the vehicle longitudinal direction are provided. In order to provide a combined floor assembly and energy storage device which offers especially rigid support for the rear cross-member even in a vehicle with a purely electric drive and in which, additionally, the energy storage device is fixed to the rear end on the lower face of the floor assembly in a particularly stable manner, the energy storage device is secured to the rear cross-member by way of the holding element.

The invention relates to the technical field of motor control, and discloses a permanent magnet synchronous motor control system and method for an electric drive hydraulic source, and the system comprises a data collection module which is used for collecting the state parameters of the electric drive hydraulic source and the operation data of a permanent magnet synchronous motor in real time through multiple sensors; the sensor redundancy and fault-tolerant module is used for performing parallel sampling through hardware dual-redundancy configuration and dual sensors; the self-adaptive fuzzy logic control module is used for dynamically adjusting a rotating speed instruction and a torque instruction of the permanent magnet synchronous motor based on the collected state parameters; a data driving optimization module; and a digital twinning prediction maintenance module. A self-adaptive fuzzy logic control module is used for dynamically generating a motor rotating speed and torque instruction based on parameters such as real-time pressure, flow deviation and change rate, a fuzzy logic algorithm is used for processing a nonlinear time-varying load and quick response, a self-adaptive fuzzy logic control rule weight and a power conversion circuit parameter are optimized through a reinforcement learning algorithm, and the control precision is improved. And dynamic self-optimization of permanent magnet synchronous motor control is realized.

The invention discloses a detection system for operation abnormity of an electric drive axle motor of a new energy commercial vehicle, and belongs to the technical field of motor abnormity detection. The system comprises a multi-source sensing module, a dynamic coupling analysis module, a harmonic distortion traceability module, a dynamic stability analysis module, an anomaly fusion decision module, a self-adaptive threshold generation module and a fault tree reasoning module. Multi-dimensional signals such as current, vibration, temperature and a rotor position angle are synchronously acquired through the multi-source sensing module, and multi-physics field collaborative analysis is performed through the dynamic coupling analysis module and the harmonic distortion traceability module, so that the fault diagnosis accuracy of operation abnormity of the electric drive axle motor of the new energy commercial vehicle is improved; the problem that in the prior art, detection only depends on a single physical quantity, and misjudgment or missing detection is easily caused by interference is solved.

The invention provides a magnesium alloy electric drive main shell mold machining precision control method and system, and belongs to the field of precision numerical control machining. The method comprises the steps that dynamic milling force, key point temperature and position signals of all shafts are synchronously collected through a multi-source sensor; a recursive least square method is adopted to identify the dynamic rigidity and damping coefficient of the tool-workpiece system on line, and the thermal deformation drift distance is calculated in combination with a temperature signal; predicting a three-dimensional deformation error vector in real time based on the dynamic model, thermal deformation and geometric errors, and constructing a space compensation field; macro motion compensation is achieved by modifying numerical control program coordinate points, and meanwhile high-frequency micro-amplitude compensation is conducted through a spindle tail end fast tool servo system. And establishing an adaptive disturbance observer to perform online estimation on unmodeled disturbance and feed-forward compensation, and realizing online self-tuning of model parameters in combination with in-situ measurement feedback. Real-time sensing, full-band dynamic compensation and closed-loop self-adaptive control of multi-source errors are achieved, and the machining precision and long-term stability of the mold are remarkably improved.

The invention relates to the technical field of electric workover rig thermal management, and discloses a workover pump truck electric drive thermal management method and system, and the system comprises a multi-source temperature collection module, an operation state monitoring module, a thermal management analysis module, a strategy matching engine module, a dynamic execution control module, a feedback optimization module, and a prediction decision module. The method comprises the following steps: acquiring environment temperature, motor temperature, battery temperature and cooling liquid temperature data; obtaining motor power, battery current and a vehicle operation mode; generating a thermal management demand level based on the temperature and the operating parameters; matching natural cooling, air cooling or liquid cooling strategies according to grades; cooling operation is executed, the temperature change rate is calculated in real time, and the cooling intensity is dynamically adjusted; when the threshold value is exceeded, liquid cooling cooperative control is started; predicting a thermal load trend through an LSTM model, generating a dynamic cooling plan, and optimizing an execution priority; and a thermal management efficiency evaluation report is output, so that the operation reliability and energy efficiency of the electrically-driven workover pump truck are improved.

The invention discloses a multi-drive cooperative control method for high-precision electric drive assembly equipment, relates to the technical field of intelligent manufacturing control, and is used for solving the problem of insufficient cooperative control precision of a multi-axis system under parameter mismatch and disturbance. By constructing a multi-source data fusion and dynamic coupling analysis mechanism, the system collects the motion state and control parameter data of multiple driving shafts, generates a multi-shaft collaborative dynamic response sequence, and calculates the dynamic coupling degree between the shafts to identify the uncertainty mode of the system; positioning a performance degradation shaft section by combining the temperature field and the vibration signal characteristics, and generating a system stability evaluation coefficient; and establishing a space mapping relation to construct a dynamic compensation factor matrix, and generating a control parameter adjusting quantity meeting a collaborative matching condition through fuzzy rule reasoning. According to the method, control instability caused by traditional global adjustment is avoided, precise cooperative control of the multi-axis system is achieved, and the control precision, operation stability and reliability of equipment under the dynamic working condition are remarkably improved.

The invention relates to the technical field of state monitoring, in particular to an electric drive system overheating protection monitoring method and system based on big data, and the method comprises the following steps: obtaining a power rising section and extracting a temperature curve, judging whether the temperature rise lags behind or not, marking response delay, recognizing thermal fluctuation lag through an expansion window, and extracting peak valley to judge trend deviation. And the positioning node tracks the heat path, identifies the interrupt structure and generates an early warning identifier. In the electric drive system operation process, the coupling relation between the power change trend and the temperature rise time sequence is combined, accurate recognition of temperature rise response delay is achieved, the position distribution of a heat path interruption structure is defined through continuous tracing of the heat node temperature rise sequence relation, and linkage performance between heat interruption structures is combined, so that the reliability of the electric drive system is improved, and the reliability of the electric drive system is improved. Concurrent characteristics of overheating abnormity are identified, the response capability and early warning accuracy of an electric drive system in the early stage of overheating risks are improved, and rapid positioning of potential thermal fault risks and intelligent division of risk levels are achieved.

A drive unit for a vehicle includes an electric motor, an output shaft, and a housing. The electric motor includes a rotor shaft having an inner surface with a hollow accessible via an opening at an axial end of the rotor shaft and an outer surface opposite the inner surface. The output shaft extends into the hollow through the opening. The housing houses the electric motor and defines a fluid flow path for fluid. The housing has a collar portion about the output shaft, a first holding portion on a first axial side of the collar portion and having baffles that are circumferentially offset from each other, a second holding portion on a second axial side of the collar portion opposite the first axial side, such that the collar portion is positioned axially between the first and second holding portions, and conduits extending between the first and second holding portions.

The embodiment of the present application is to provide a uniform temperature cooling water circuit architecture and vehicle for an electric drive system and a battery system, aiming to solve the problem of high energy consumption when maintaining the temperature of the electric drive system and the battery system. The water circuit architecture includes: an electric drive system circuit, a battery system circuit, an engine system circuit and a cooling water circuit; wherein, the electric drive system circuit is connected to both ends of the battery system circuit; the battery system circuit includes a heater, and the engine system circuit is connected to both ends of the heater, so that the heat of the engine system circuit is transferred to the heater, and the heater is used to provide heat for the battery system circuit; wherein a shut-off valve is provided between the heater and the engine system circuit; the cooling water circuit and the engine system circuit are connected in parallel, so that the cooling water circuit cools the engine system circuit. By mutual heating, uniform temperature or cooling between the electric drive system circuit, the battery system circuit, the engine system circuit and the cooling water circuit, the heat inside the vehicle is effectively utilized and energy consumption is reduced.

The invention relates to an aircraft electric drive oil cooling structure which comprises an outer rotor assembly, a stator assembly, a controller assembly, an oil pump and a heat dissipation assembly, the stator assembly comprises a stator shell and a winding, a sealing cover is further fixed to the outer side of the winding, and a cooling cavity is formed between the sealing cover and the stator shell; a bottom plate is further arranged at the bottom of the stator shell, the controller assembly is fixed in a mounting cavity formed by the bottom plate and the stator shell and comprises a circuit board and a cooling plate which are close to each other, the circuit board is connected with the winding, an oil duct A is further arranged on the bottom plate, an oil inlet pipe and an oil outlet pipe are arranged on the cooling plate, and an oil duct B communicated with a cooling cavity is further arranged on the bottom plate; the heat dissipation assembly comprises a heat dissipation fin set and a fan assembly, the heat dissipation fin set and the oil pump are both fixed to the lower portion of the bottom plate, heat dissipation fins form a ring and are arranged outside the oil pump in a surrounding mode, the heat dissipation fin set, the oil pump and the bottom plate are communicated with one another, and the fan assembly is fixed to the lower portion of the heat dissipation fin set. Efficient, light-weight, high-integration-level and reliable heat dissipation of the electric drive of the aircraft is achieved.

The invention relates to a small-space electrically-driven metamorphic spinning-buckling gripper capable of being quickly replaced, which comprises a clamping assembly, a clamping assembly, a first clamping assembly and a second clamping assembly, a metamorphic gripper part is hinged to the first shell, the metamorphic gripper part comprises at least two pairs of clamping rollers, and each pair of clamping rollers is sleeved with an elastic crawler belt capable of being attached to and abutting against a drill rod; the rotary power assembly comprises a driving roller used for driving the drill rod to rotate; a mechanical arm assembly; the electromagnetic adsorption assembly can lock or unlock and separate the clamping assembly and the rotary power assembly; a motor direct drive assembly; a sensor assembly; and a control unit. By arranging the electromagnetic adsorption assembly, quick disassembly and assembly of the clamping assembly are achieved, and the clamp replacement efficiency is remarkably improved; by arranging the clamping assembly of the metamorphic structure, the drill pipe clamp can adapt to drill pipes of different sizes, and multiple purposes are achieved through one clamp; the clamping rollers are sleeved with the elastic crawler belts, the contact area of the clamp and the drill rod is increased, clamping stress is evenly distributed, and damage to the drill rod caused by local stress concentration is avoided.

The invention discloses a numerical control machine tool vibration suppression self-adaptive control system and method, and relates to the technical field of intelligent vibration control, and the method comprises the steps: building a current-modal dynamic mapping relation between an electrical drive characteristic and a mechanical structure modal response based on a vibration state feature vector; real-time machine tool modal state vectors are obtained through online recursive estimation; the machine tool modal state vector is used as a boundary condition to be injected into the virtual prediction model; solving to obtain an optimal control parameter sequence and a corresponding vibration prediction result in a future time domain by taking multi-performance index collaborative optimization as a target through a rolling optimization control strategy; translating the control parameter sequence into a specific execution instruction and issuing the specific execution instruction; monitoring an execution process in real time and recording actual response data; according to the method, the accuracy of vibration prediction and the real-time performance of control response are improved by establishing the dynamic mapping relation from the electromagnetic driving characteristics of the servo main shaft and the feed motor to the dynamic response of the machine tool structure.

The invention relates to the technical field of vibration noise optimization, in particular to a vibration noise optimization method and system of an electric drive assembly. The method comprises the following steps of collecting multi-working-condition vibration noise of a transmission motor in an electric drive assembly and performing frequency domain conversion to generate vibration noise frequency domain data; on the basis of the data, carrying out gear meshing stress unbalance loading limit calculation, carrying out tooth surface pitting corrosion cycle ductility simulation, and identifying a bearing clearance expansion increment; optimizing the bearing structure according to the bearing clearance expansion incremental data to obtain bearing structure optimization data; performing tooth direction drum shape modification analysis according to the tooth surface pitting corrosion data to obtain modification data; and finally, carrying out anti-vibration strengthening design by combining bearing optimization and tooth direction modification data, generating structural anti-vibration strengthening design data, and sending the structural anti-vibration strengthening design data to a terminal so as to execute structural optimization and reduce the influence of vibration noise. According to the method, the vibration noise optimization technology is optimized, so that the vibration noise optimization technology is more perfect.

The invention relates to an electric duct driving system integrated with a heat dissipation function and an aircraft, the aircraft comprises the electric duct driving system, the electric duct driving system comprises a casing, an electric driving assembly and a heat dissipation pipeline, a fan is arranged in the casing, and the electric driving assembly is in transmission connection with the fan and used for driving fan blades of the fan to rotate; the heat dissipation pipeline is arranged on the outer surface of the casing and provided with a cooling liquid inlet and a cooling liquid outlet, one part of the heat dissipation pipeline is connected to the outer surface of the casing, one end of the heat dissipation pipeline is connected to the cooling liquid outlet, and the other end of the heat dissipation pipeline is connected to the cooling liquid inlet, so that the electric duct driving system can utilize structural parts (namely the casing and the fan) of the electric duct driving system as components for heat dissipation; therefore, a heat management system does not need to be installed, the structure of the electric duct driving system is greatly simplified, the risks of system weight increment and part failure caused by the adoption of a centralized liquid cooling system are effectively reduced, the energy consumption of the whole machine is also effectively reduced, and the cruising ability of the aircraft is improved.

The invention provides a multi-source data convolution fusion TBM electric drive system fault diagnosis method, and relates to the technical field of TBM electric drive control. The method comprises the following steps of: filtering and denoising operation data of an electric drive system by using variational mode decomposition (VMD), extracting time domain features, and constructing a multi-mode fusion data set; secondly, extracting short-term, medium-term and long-term time sequence features in parallel through a residual causal convolutional network, and enhancing key features by using a convolutional block attention module (CBAM) to highlight early weak fault signals; furthermore, working condition parameters are embedded into a feature space by adopting working condition adaptive coding, and cross-working-condition feature consistency constraint is realized based on a maximum mean difference (MMD) criterion. According to the method, the weak fault identification capability and the cross-working-condition diagnosis generalization performance are effectively improved, and the TBM operation stability and the tunnel construction safety are guaranteed.

The invention provides a vehicle torque distribution method and a double-electric-drive-axle vehicle, and relates to the technical field of new energy automobiles. The method is applied to a vehicle controller of a double-electric-drive-axle vehicle and comprises the steps that actual operation parameters of two motors in the double-electric-drive-axle vehicle are obtained; the total demand torque of the double-electric-drive-axle vehicle is obtained; according to the total demand torque and the actual operation parameters of each motor, the demand power of each motor under the multiple preset distribution coefficients is calculated; determining the corresponding total demand power according to the demand power of each motor under the plurality of preset distribution coefficients; determining a target distribution coefficient from the plurality of preset distribution coefficients according to the total demand power corresponding to the plurality of preset distribution coefficients; and performing torque distribution control on the two motors by adopting the target distribution coefficient according to the total demand torque. The target distribution coefficients of the motors are dynamically determined, then the two motors are controlled, the overall energy efficiency of the vehicle reaches the optimal level, energy efficiency waste is avoided, and the driving experience is improved.

The invention relates to the technical field of stepless speed change control, and discloses a stepless speed change zeroing control system based on a direct-axis electric drive axle, which comprises a signal acquisition module, a torque analysis module, a zeroing control module, a mode switching module, a reference calibration module and an execution output module. The signal acquisition module acquires a rotating speed signal and torque data and sets a zero setting detection interval; the torque analysis module divides torque compensation nodes and generates feature vectors; the zero setting control module establishes a correction rule and obtains a compensation parameter; the mode switching module identifies an output mode and calculates a rotating speed fluctuation amplitude; the reference calibration module deduces an optimal zeroing threshold value and generates a torque deviation sequence; and the execution output module integrates to form a control scheme. The system achieves torque dynamic compensation, rotation speed fluctuation suppression and threshold value self-adaptive calibration through multi-module cooperation, improves the stability and control precision of an electric drive axle under complex working conditions, and is suitable for stepless speed change control of an electric vehicle.

The invention discloses an unmanned aerial vehicle having multifunctional leg assembly and charging system, including unmanned aerial vehicle and charging station. The UAV includes obstacle avoidance sensors, flight control module, first signal processing module, electric undercarriage and power charge / storage module. The charging station includes power charge / supply module. The obstacle avoidance sensors sense obstacles near the UAV to generate obstacle sensing signals. The first signal processing module interprets and processes the obstacle sensing signals to determine whether there is an obstacle near the UAV, and when the judgment result is yes, an avoidance instruction is transmitted to the flight control module, so that the flight control module drives the UAV to avoid the obstacle. The electric undercarriage includes first leg frame, second leg frame and electric driving mechanism. The electric driving mechanism drives the first leg frame and the second leg frame to fold and unfold alternately. The power charge / storage module includes first positive electrode and first negative electrode. The charging station includes power charge / supply module. The power charge / supply module includes second positive electrode and second negative electrode. When the UAV parks on a platform of the charging station, and the first positive electrode and the first negative electrode are in contact with the second positive electrode and the second negative electrode, then the power charge / supply module charges electricity to the power charge / storage module.

The invention relates to the technical field of robots, and discloses an electro-hydraulic hybrid driving and driven humanoid robot lower limb and waist assembly which serves as a connection foundation of lower limbs and a robot trunk. The near ends of the thigh assemblies are connected with the waist assembly through hip joints; the near end of the shank assembly is connected with the far end of the thigh assembly through a knee joint; the foot component is connected with the far end of the shank component through an ankle joint; the hip joint is provided with three rotational degrees of freedom, the knee joint is provided with one rotational degree of freedom, and the ankle joint is provided with two rotational degrees of freedom; the rotational degree of freedom of each joint in a sagittal plane is driven by an active hydraulic actuator and a passive hydraulic actuator; the rotational degree of freedom of each joint in a horizontal plane and a coronal plane is driven by a motor joint module; the advantages of electric drive and hydraulic drive are brought into full play, and the problems of high power consumption in the negative work stage, complex traditional hydraulic drive pipelines and the like are solved by adopting an active and passive combined distributed hydraulic drive technology.

The invention relates to the technical field of engineering machinery, and particularly discloses an electrically-driven metering pump load-sensitive system, a control method and engineering machinery, the electrically-driven metering pump load-sensitive system comprises a control unit, a driving motor assembly, a metering pump, a pilot hydraulic control unit, a pilot handle assembly, a load-sensitive valve assembly, an actuator assembly, a sensor assembly and a pressure difference control module; the driving motor drives the metering pump to supply oil to the load-sensitive valve assembly so as to drive the actuator assembly to operate; the control unit receives the maximum outlet pressure and the maximum load pressure of the pump collected by the pressure sensor, receives a system target pressure difference signal of the pressure difference control module at the same time, and synchronously controls the rotating speed of the motor and the valve target pressure difference output by the proportional pressure reducing valve. The system aims to solve the problems that a traditional upstream compensation load sensitive system lacks a flow saturation resisting function, and a downstream compensation load sensitive system has extra reversing energy consumption and fixed system pressure difference setting.

The utility model relates to the technical field of driving motors and electric driving systems, in particular to a diversion structure and an eddy current sensor, the diversion structure comprises a shell, a capacitor assembly and a diversion body, the shell is provided with an abdicating channel, and the abdicating channel is used for accommodating a rotating shaft of a motor; the capacitor assembly is fixedly arranged on the shell; the current guiding body is fixedly arranged on the shell and electrically connected with the capacitor assembly, the current guiding body is provided with a current guiding end exposed out of the shell, and the current guiding end is located in the receding channel and used for abutting against a rotating shaft of a motor. The utility model aims to provide a flow guide structure and aims to reduce the occurrence probability of electro-corrosion.

A coaxial asynchronous motor drive system, including a speed reducer, an electric motor and a main housing, and further including a motor controller, wherein the electric motor and the speed reducer are connected to form a motor reducer assembly and mounted inside the main housing, and the motor controller is fixed to the main housing and connected to the motor reducer assembly. The system reduces parasitic loss of an auxiliary motor drive system of a battery electric four-wheel-drive vehicle and increases the range per charge of the vehicle, and the compact and integrated coaxial motor drive system facilitates maximum utilization of available space of the vehicle.

The utility model belongs to the technical field of pipe system plugging accessories and pipe plugs, and particularly relates to an internal expansion type hole channel plugging device, a plugging system and a device with a sealing hole. The internal expansion type hole channel plugging device comprises a sealing sleeve and an inner core preset in the sealing sleeve, the sealing sleeve is provided with a closed blocking end face at the far end and an extrusion and expansion side wall formed by extending from the edge, the extrusion and expansion side wall is provided with a conical inner surface, and the inner core is provided with a conical outer surface and an axial threaded hole. A pulling tool is screwed into the threaded hole to apply axial pulling force, so that the conical surfaces extrude each other to cause radial expansion of the sealing sleeve to realize hole channel sealing. The hole channel plugging device can be matched with a rivet nut gun to carry out convenient and reliable hole channel plugging operation. The hole channel plugging technology is suitable for industrial products needing straight hole sealing, such as electric driving devices, injection molds and power battery modules, has the characteristics of high sealing reliability, operation convenience and clean plugging, and effectively solves the problems of scrap pollution, sealing failure and the like of a traditional plugging technology.

The invention discloses a state detection method, a related device, equipment, a medium and a program product. The state detection method comprises the following steps: decomposing a first electric signal of an electric drive system into a plurality of first modal components; selecting at least one noise mode component from the plurality of first mode components; performing filtering processing on the at least one noise mode component to obtain at least one second mode component; performing signal reconstruction by using the at least one second modal component and each unfiltered modal component in the plurality of first modal components to obtain a second electric signal; and determining a state detection result of the electric drive system at least by using the second electric signal. In this way, the accuracy of state detection of the electric drive system can be improved.

The invention discloses a single-motor two-gear coaxial electric drive axle structure, a vehicle and a working method, solves the problems of mass center offset and large occupied space of an electric drive axle in the prior art, and has the beneficial effects of being compact in structure, high in integration level and convenient to arrange. Comprising a first half shaft and a second half shaft, the first half shaft and the second half shaft are connected through a differential mechanism, a driving motor is arranged around the first half shaft and is a hollow shaft motor, an output shaft of the driving motor is connected with a first planet row, and a first planet carrier in the first planet row is fixedly connected with driving discs of at least two clutches; driven discs of the clutches are fixedly connected with sun gears in the second planet row respectively, the sun gears are meshed with the corresponding planet gears, one planet gear is meshed with the corresponding gear ring, all the planet gears in the second planet row are connected and arranged on the second planet carrier in a sleeved mode, and the first planet row and the second planet row both take the first half shaft as the rotation center.