340 results about "Resolver" patented technology

The invention discloses an integrated linear steering engine, which belongs to the technical field of linear steering engines, and comprises a shell, and a motor assembly, a transmission assembly and a sensor which are arranged in the shell, the transmission assembly comprises a multi-stage gear pair, a lead screw pair and an output shaft assembly. The lead screw pair output shaft assembly and the motor assembly are arranged in parallel. The multi-stage gear pair comprises an input gear, a transfer gear and an output gear which are sequentially arranged in a meshed mode, and the input gear is connected with the output end of the motor assembly. The lead screw pair output shaft assembly comprises a lead screw and a nut output shaft. One end of the lead screw is connected with the output gear, the other end of the lead screw is connected with the nut output shaft, and the nut output shaft extends out of the shell to achieve linear output. The sensor comprises a rotary transformer sensor, and the rotary transformer sensor is arranged at the end, away from the output end, of the motor assembly. The size and weight of the steering engine can be greatly reduced, and the steering engine has the advantages of being large in output torque and high in transmission precision.

The invention relates to the technical field of vulnerability detection, in particular to a code-level security vulnerability detection method, electronic equipment and a storage medium. The method comprises the steps of obtaining a logic graph corresponding to a target code, wherein the logic graph comprises a role node, a service entity node, an operation edge and an access constraint edge; obtaining an application scene label of the target code according to the logic graph; inputting the target code into an AST resolver to obtain a syntax tree corresponding to the target code; obtaining a sensitive function library B and a suppression function library C matched with the target code according to the application scene label of the target code; and judging whether the target code has security vulnerabilities or not according to the syntax trees corresponding to the B, the C and the target code. According to the method, the unauthorized risk vulnerabilities in the program codes can be effectively identified.

The invention relates to the technical field of vehicle control, and discloses a pure electric commercial vehicle resolver observation mechanism which comprises the following steps: in a whole vehicle driving state, judging whether to enter an observation mode or not, if the rotating speed of a motor is greater than an observation threshold value, entering the observation mode; if the rotating speed of the motor is smaller than the observation threshold, the observation mode is not entered or quitted; after entering the observation mode, calculating according to an LO observation model to obtain a back electromotive force observed quantity; inputting the back electromotive force observed quantity into the phase-locked loop model, and calculating to obtain a target observed quantity; meanwhile, a real signal is acquired and decoded by the rotary transformer; the target observed quantity and the real signal both comprise an angle and an angular velocity; and comparing the real signal with the target observed quantity to judge whether fault early warning is needed or not and judge whether the real signal meets the observation expectation or not. The real state of the driving system can be accurately observed, the robustness and reliability are high, and the operation efficiency is high.

A stator includes a stator core, a stator winding wound via an insulator provided at the stator core, and a terminal block arranged at an outer side in a direction of the stator core. The stator core includes an end portion protruding from an opening of a housing in an axial direction and is mounted to the housing by a mounting bracket being in contact with an end face of the end portion. The mounting bracket includes an annular portion having a C-shape, a connecting portion disposed between both ends of the annular portion, and a bent portion protruding upward in the axial direction at an inner circumferential edge portion of the annular portion. The bent portion is in contact with the end face of the stator core. The connecting portion includes a relief portion extending at a position away from the terminal block.

The application provides a power assembly with reducer side wire outlet, a double-motor power assembly and an electric vehicle. The power assembly comprises an intermediate integrated shell, a resolver sensor, a motor and a reducer. The intermediate integrated shell comprises a partition plate and two circumferential shells. One circumferential shell is used for fixing a motor stator of the motor and accommodating a motor rotor of the motor, and comprises at least one through hole. The other circumferential shell is used for accommodating a gear set of the reducer. The partition plate is used for separating the inner cavities of the two circumferential shells. The partition plate comprises a shaft hole and at least one wire outlet hole. The shaft hole and the at least one wire outlet hole are used for connecting the inner cavities of the two circumferential shells. The shaft hole is coaxially arranged with an input shaft of the reducer or a motor shaft of the motor. The distance between the at least one wire outlet hole and the center point of the shaft hole is greater than the inner diameter of a resolver stator of the resolver sensor. The power assembly provided by the application has a smaller axial dimension.

The invention relates to a driving motor control method and device, electronic equipment and a vehicle, relates to the technical field of vehicles, and aims to improve the running stability of a motor. The method comprises the steps that under the condition that a rotary transformer signal measured by a position sensor or a calculated rotation angle is abnormal, an estimated rotation angle is determined based on electrical parameters of a driving motor in the vehicle; controlling the operation of the driving motor based on the estimated rotation angle; wherein the electrical parameters comprise at least one of the following items: voltage and current; and the position sensor is used for measuring a rotary change signal of the driving motor and determining a resolving rotation angle based on the rotary change signal. Therefore, under the condition that the position sensor cannot accurately measure the rotation angle, the normal operation of the driving motor is maintained by estimating the rotation angle.

In accordance with various embodiments of the present disclosure, an integrated circuit for determining an angular position of an electric motor having a rotatable shaft and a resolver is provided. In some embodiments, the integrated circuit comprises (i) an angle sampling module adapted to receive a signal from the resolver and to repeatedly determine, at an angle sampling rate, the angular position of the rotatable shaft using the signal from the resolver, (ii) an interpolation module to determine an interpolated value of the angular position of the rotatable shaft at each cycle of a motor control loop rate, and (iii) a motor control module adapted to provide a pulse width modulated (PWM) signal to the motor. The PWM signal is based at least in part on the determined interpolated value of the angular position of the rotatable shaft determined at each cycle of the motor control loop rate.

The invention discloses a rapid target plate calibration device, and belongs to the technical field of laser boresighting, the device comprises a laser boresighting mirror and a laser resolver, the laser boresighting mirror is used for emitting laser beams, the laser resolver is installed on an aircraft target plate, a laser receiver of the laser resolver is used for splitting light, a vertical camera is installed at the top of the laser resolver, and the vertical camera is connected with a camera. A parallel camera is installed at the rear end of the laser resolving instrument, the laser receiver divides a received laser beam into two light beams perpendicular to each other, and the two light beams are transmitted to the vertical camera and the parallel camera respectively. Compared with the prior art, the device does not need a tedious aircraft leveling process, remarkably reduces the operation complexity, adopts an advanced laser image detection technology and a high-precision sensor, can realize high-precision fixed-axis measurement, adopts a near-infrared band CCD (Charge Coupled Device) industrial camera, is provided with a narrow-band optical filter at the front end, can effectively filter the interference of environmental visible light, and is high in measurement precision. The pose of the target plate is automatically adjusted through automatic calculation of an algorithm, and personal errors are reduced.

The invention discloses a quadrature error correction method and device, electronic equipment and a storage medium, and relates to the technical field of error correction, and the method comprises the steps: obtaining a quadrature error angle, an excitation angle and a rotation output shaft angle, the quadrature error angle being a phase deviation generated when the mechanical dislocation of a secondary winding of a resolver is not 90 degrees; constructing a correction signal according to the orthogonal error angle, the excitation angle and the rotation output shaft angle; and performing error correction on the resolver sine signal and the resolver cosine signal based on the correction signal to obtain a rotation demodulation signal. The technical scheme of the invention aims to completely eliminate the quadrature error.

A shipping jig for an e-motor includes a central axis, an annular disk arranged for fixing to a cover of the e-motor, and a cylindrical portion extending axially from the annular disk and arranged for axially and radially positioning a rotor carrier of the e-motor relative to a stator of the e-motor. The annular disk includes a first plurality of holes distributed about a first bolt circle and a second plurality of holes distributed about a second bolt circle, smaller than the first bolt circle. The cylindrical portion may also be arranged for radially positioning a portion of a resolver relative to the stator. The first plurality of holes may each have a same third diameter and the second plurality of holes may each have a same fourth diameter, greater than the same third diameter.

Processing circuitry comprising an analog-to-digital converter configured to perform the techniques of this disclosure. The analog-to-digital converter may obtain, based on electrical interactions with a resolver sensor, a noisy modulated digital cosine signal (NMDCS) and a noisy modulated digital sine signal (NMDSS). The processing circuitry includes a filter configured to process the NMDCS and the NMDSS to output a filtered NMDCS and a filtered NMDSS, and a rectifier configured to process the filtered NMDCS and the filtered NMDSS to output a rectified NMDCS and a rectified NMDSS. The processing circuitry includes a digital signal processor that executes a first trained machine learning model to process the rectified NMDCS and the rectified NMDSS to obtain a demodulated DCS and a demodulated DSS, and compute, based on the demodulated DCS and the demodulated DSS, an approximate angle of the rotating element.

The invention provides a method and system for conveniently measuring the comprehensive backlash of a vehicle transmission system, and the method comprises the steps: measuring a motor resolver angle # imgabs0 # switched to an N gear or a P gear and a motor resolver angle # imgabs1 # switched to a D gear for multiple times through a motor resolver sensor when a vehicle is located on a flat road surface and is in a static state, so as to obtain a single-time transmission system backlash value # imgabs2 #; according to the method, the change of the backlash of the transmission system is represented by introducing the signal of the motor rotary transformer sensor, the comprehensive backlash value of the transmission system can be measured without external equipment and a measuring tool, the operation is convenient and fast, the method can be applied to software control, and the method is suitable for large-scale popularization and application. And therefore, the problem of vehicle jitter caused by backlash dispersion difference can be accurately optimized with better related control parameters.

Systems and methods for a secure cross-chain atomic swaps are disclosed herein. A user submits to a swap platform a signed limit order to atomically swap an amount of input token for an output token. The swap may involve a Dutch auction approach, in which the order execution price depends on time of inclusion in a block and decreases over the duration of the Dutch auction. The swap platform provides the order details to whitelisted resolvers to evaluate if / when / how to fill the order. Once a resolver makes that determination, it can utilize smart contracts associated with the swap platform to perform the atomic swap on behalf of the user and itself (e.g., without active involvement of the user). Input tokens deposited on an escrow contract are unlocked at the same time that output tokens deposited on another escrow contract are unlocked.

The utility model discloses a signal processing circuit and system, and relates to the technical field of signal processing, and the signal processing circuit comprises a timing comparator which is used for carrying out counting reset and signal comparison according to an edge event obtained by detecting a zero crossing point of an excitation signal, and outputting a periodic event signal and a sampling trigger signal; the interrupt controller is connected with the timing comparator and is used for outputting an interrupt trigger signal according to the periodic event signal; the AD converter is respectively connected with the timing comparator and the rotary transformer and is used for carrying out sine and cosine electric signal sampling on the rotary transformer according to the sampling trigger signal to obtain a sampling signal; and the microcontroller is respectively connected with the interrupt controller and the AD converter, and is used for carrying out peak value sampling according to the excitation signal and the sampling signal when receiving the interrupt trigger signal so as to extract and obtain an envelope signal. According to the method and the device, the effect of improving the accuracy of envelope signal extraction and the accuracy of subsequent rotor angle calculation is achieved.

Apparatus and associated methods relate to a transformer-less way of demodulating signals generated by a synchro-resolver so as to determine a shaft angle of the synchro-resolver. A first differential output voltage between a first pair of the wye-configured secondary windings is used to generate a first output. A second differential output voltage between a second pair of the wye-configured secondary windings, different from the first pair, is used to generate a second output. The first and second outputs are combined to form a signal quadrature to the first output. The first output and the signal quadrature thereto are used to determine the shaft angle.

The invention relates to a semi-physical simulation device and method for simulating in-orbit operation servo antenna control. The device comprises an STK simulation module, a satellite service simulation module, a servo control module and a time synchronization module, the STK simulation module is used for generating satellite orbit parameters, satellite attitude parameters and satellite time broadcast data of two satellites, and the satellite service simulation module receives and forwards the data. The servo control module comprises a main controller chip, a resolver decoder chip and a motor driving chip, the controller chip is used for calculating an antenna target pointing angle in real time according to satellite orbit parameters and satellite attitude parameters, or the satellite service simulation module issues the antenna target pointing angle and solves control output of the main controller chip, and the main controller chip is used for controlling the satellite orbit parameters and the satellite attitude parameters. And outputting and controlling the antenna to rotate to the target pointing angle, and finally performing time synchronization. By adopting the method, the on-orbit pointing and running state of the antenna can be effectively simulated in real time.

The invention relates to the technical field of motor detection, in particular to dual-redundancy angle detection equipment with different working modes, which comprises a rotary transformer switching mechanism used for installing and switching working states of a rotary transformer transmitter assembly, the working states comprise a working position and a standby position, and the rotary transformer transmitter assembly is driven by the rotary transformer switching mechanism to rotate under the working position. The rotary transformer transmitter assembly detects the angle of a motor shaft through a transmission link. According to the invention, the rotary transformer transmitter and the variable differential transformer can be flexibly switched according to scenes, anti-electromagnetic interference, high-precision detection and double-mechanism cooperative verification are realized, and the working condition adaptability is improved.

The invention discloses a rotary transformer testing device and method. The rotary transformer testing device comprises a motor, a motor controller, a high-voltage direct-current power supply, an upper computer, an oscilloscope and low-voltage electrical performance testing equipment, the motor drives the rotary transformer rotor to rotate; the high-voltage direct-current end of the motor controller is connected with a high-voltage direct-current power supply, and the output end of the low-voltage electricity performance test equipment is connected with the low-voltage power supply end of the motor controller to generate a low-voltage interference signal or provide stable low-voltage electricity to be input to the motor controller; the communication ends of the motor controller, the high-voltage direct-current power supply and the low-voltage electrical performance test equipment are connected with the upper computer; the excitation end and the acquisition end of the motor controller are respectively connected with the input end and the output end of the resolver stator, and the motor controller provides excitation signals for the resolver stator and acquires induction signals fed back by the resolver stator; the acquisition end of the oscilloscope is connected with the input end and the output end of the rotary transformer stator, and the oscilloscope acquires and displays waveforms of excitation signals and induction signals. According to the invention, the accurate resolver condition can be obtained, and misjudgment can be avoided.

The application discloses a kind of accurate positioning method and device of robot joint, method includes: obtaining the first position signal of permanent magnet motor collected by resolver and the second position signal of permanent magnet motor collected by hall sensor, and first position signal and second position signal are respectively stored in the form of N-bit binary number;The low M bit of second position signal is used to the low M bit of first position signal is weighted replacement, obtain the motor weighted position signal after synthesis, in order to realize accurate positioning to robot joint, wherein, M < N.The application replaces the data of part of precision of resolver by part of high-precision data of hall sensor, obtains the motor weighted position signal after synthesis, to obtain accurate motor position signal, and then realize accurate positioning of robot joint.

The motor speed control device of the embodiment includes a rotational speed estimation unit and a control unit. The rotational speed estimation unit generates an estimated value of the rotational speed of the motor using a result of FFT analysis of a speed detection signal ωFBK obtained based on a detection result of a resolver that detects the rotational speed of the motor, and the speed detection signal ωFBK. The control unit performs speed control in such a manner that a deviation between a speed command value for the speed control of the motor and the estimated value of the rotational speed is reduced.

A resolver includes a stator having a stator body formed of a first plastic material and a cover covering a side of the stator. The cover has a cover body formed of a second plastic material. The first plastic material of the stator body is attached to the second plastic material of the cover body by a plastic weld.

The utility model discloses a three-phase plastic-coated structure and an electrical device, and relates to the technical field of power distribution structures, the three-phase plastic-coated structure comprises a plastic member, a three-phase copper bar, a rotary transformer sealing assembly and a fixing member, the plastic member is provided with a first mounting hole and at least three second mounting holes; any phase of copper bar of the three phases of copper bars is arranged in the corresponding second mounting hole; the rotary transformer sealing assembly is detachably arranged in the first mounting hole, the rotary transformer sealing assembly comprises a rotary transformer sealing seat and a rotary transformer wire harness arranged on the rotary transformer sealing seat, and the rotary transformer sealing seat and the hole wall of the first mounting hole are arranged in a sealing mode; the fixing part is connected with the plastic part and the rotary transformer sealing seat so as to fix the rotary transformer sealing seat on the plastic part; according to the technical scheme provided by the utility model, the cost of the plastic coating structure can be reduced, the assembly and maintenance efficiency can be improved, the installation reliability can be indirectly improved, and the service life of equipment can be indirectly prolonged.

The utility model discloses a multi-turn resolver framework, which comprises a resolver stator and a resolver rotor sleeved in the resolver stator and in transmission connection with an output shaft of a motor, and also comprises a support, a PCBA board and a detection element, the support is installed on the resolver stator, the PCBA board is installed on the support and is electrically connected with the resolver stator, and the detection element is electrically connected with the PCBA board. The detection element is detachably connected to the rotary transformer rotor, is in signal connection with the PCBA board, and is used for detecting the number of rotation turns of the rotary transformer rotor. According to the utility model, under the condition that the volume is almost unchanged, multiple circles of signals can be output, the environmental tolerance of an original rotary transformer is not influenced, the application field of products is expanded, and the rotary transformer can be additionally installed or expanded as an independent component, and is high in applicability.

Methods, systems, and apparatuses for real-time synchronization techniques for rectification of resolver feedbacks are provided. Various embodiments of the present disclosure include generating a synchronized rectification sign signal in real-time, aligned to an external delay, using a sign of modulated feedback waves. Various embodiments may include a process for reconstructing the sign by dynamically selecting the larger signal (in absolute value) of at least one sine signal and at least one cosine signal.

A vehicle control method and apparatus, relating to the field of electric vehicles, describes a method that, under engine idling speed, uses the speed signal collected by the generator resolver, combined with the engine ignition advance angle and the generator resolver angle, to determine the correspondence between the engine crankshaft angle and the generator resolver, generating a generator compensation torque phase waveform, and calculating the generator compensation torque based on the phase offset according to the delay calibration. Furthermore, with engine torque and generator speed fluctuations as the target, the generator compensation torque is adaptively optimized to obtain the final generator compensation torque. By applying the final compensation torque to the generator, the speed pulsation caused by the removal of the engine flywheel and torsional damper can be effectively reduced, thereby improving the overall vehicle NVH performance.

Resolver (1) with a resolver rotor (2) fixed to a rotating shaft (4) and a resolver stator (3) arranged around the resolver rotor (2), wherein the resolver stator (3) has a plurality of projecting poles (31) provided on an annular stator core (30) projecting inward in the radial direction and arranged at equal distances in the circumferential direction, wherein the resolver rotor (2) has an outer peripheral surface (11) defined by an outer diameter obtained by combining a second function, in which the inverse of an air gap between the resolver rotor (2) and the salient poles (31) is proportional to a sinusoidal oscillation with respect to the angle (ϕ) of the resolver rotor (2), with a first function, in which the air gap is proportional to the sinusoidal oscillation, in a certain ratio, wherein the ratio is set to be greater than 0 and is set to a value which is greater the smaller a modulation is which represents a varying amplitude of an output signal of the resolver (1) with respect to the mean value of the output signal, and characterized in that the outer diameter is calculated based on the angle (ϕ), a stator inner diameter representing the length from the rotation center of the shaft (4) to the end face of the salient poles (31) on the radially inner side, the ratio, and a predetermined maximum (Gmax) and minimum (Gmin) air gap according to the following equation (A): Rm ( ∅ ) = Rs − { α × Gip ( ∅ ) + ( 1 − α ) × Gp ( ∅ )} where Gp ( ∅ ) = { ( Gmax − Gmin ) sin ∅} / 2 + ( Gmin + Gmax ) / 2 Gip ( ∅ ) = 1 [ { 1 Gmax − 1 Gmin 2} sin ∅ + 1 Gmin + 1 Gmax 2 ] Rm(ϕ): outer diameter ϕ: Angle in the coordinate system of the resolver rotor outer diameter Rs: Stator inner diameter α: ratio Gp(ϕ): first function Gip(ϕ): second function Gmax: Maximum value of the air gap Gmin: Minimum value of the air gap

The present application discloses a vehicle torque zero-crossing control method, device, equipment and storage medium, relating to the technical field of vehicles. The method includes: in response to a calibration instruction, obtaining the EPB state of a target vehicle; if the EPB state of the target vehicle is in a clamped state, controlling the target vehicle to increase or decrease torque in a torque zero-crossing interval according to a preset gradient, and determining the target clearance of the transmission system of the target vehicle through a resolver sensor; determining the target torque zero-crossing gradient parameter corresponding to the target clearance according to the corresponding relationship between the clearance and the torque zero-crossing gradient parameter configured in advance and the target clearance; modifying the torque zero-crossing gradient parameter of the target vehicle from the historical torque zero-crossing gradient parameter to the target torque zero-crossing gradient parameter; and controlling the target vehicle to perform torque zero-crossing processing according to the target torque zero-crossing gradient parameter. This method can reduce the probability of knocking in the transmission system of the vehicle and improve the comfort and driving experience of the vehicle when the torque passes through zero.

The invention relates to the technical field of electromagnetic induction type encoding, in particular to an electromagnetic induction type encoder which comprises a shell, a rotating shaft, a first bearing, a rotor, a stator, a resolving plate and a compensation assembly. The rotating shaft is installed on the inner side of the shell, the first bearing is connected to the upper end of the rotating shaft, and the rotor, the stator and the resolving plate are sequentially connected to the lower side of the first bearing; the compensation assembly comprises a compensation coil, an electric push rod, a second bearing, a shaft rod, a shaft sleeve and a signal processing module, the shaft rod is installed on the inner side of the lower end of the shell, the shaft sleeve is installed on the outer side of the shaft rod and connected with the stator, and the second bearing is installed on the outer side of the shaft sleeve. The signal processing module and the compensation coil are sequentially installed at the lower end of the rotating shaft, the current in the compensation coil can be changed when the vertical distance between the compensation coil and the stator inner coil changes, and the signal processing module drives the electric push rod to push the shaft sleeve to keep the vertical distance between the stator and the compensation coil constant according to the current change.

A stator plate is disclosed, including a plurality of openings for insertion of fasteners, for fixing a respective portion of the stator plate to an electrical device. The openings are selectable, depending on the speed configuration, and include a first set configured for a first speed configuration, and a second set configured for a second speed configuration. The first and second sets are different from each other. The first set can be for a three lobed rotor and the second set can be for a four lobed rotor.

The present invention relates to the field of image analysis, and particularly to a method and system for detecting the processing quality of resolver wire harnesses based on machine vision. The method first obtains the image of the inner core wire head of the target resolver wire harness, then uses the edge detection method to identify all the inner core edges in the inner core wire head image, then draws an identification frame corresponding to each inner core according to the inner core edges, and finally determines whether the inner core edges meet the following conditions: any inner core edge extends beyond the corresponding identification frame in the width direction; the inclination angle of any inner core edge exceeds the inclination interval; if any condition is met, it is determined that the target resolver wire harness is unqualified. Compared with the prior art, the present invention can adaptively draw identification frames for a variety of different resolver wire harnesses, and solves the problems of poor recognition reliability and low efficiency in the prior art.