290 results about "Rotary transformer" patented technology

The invention belongs to the field of synchronous motor rotor position signal acquisition and processing, and particularly relates to a resolver angle compensation method which can improve the motor rotor position signal detection precision. The method comprises the following steps: step 1, acquiring rotary power transformation angle values of n periods; 2, determining an error array of n periods according to the electrical angle value of each period; step 3, performing interpolation calculation on the error array of n periods to obtain a 2-degree error distribution array; and 4, compensating the real-time sampling rotary power transformation angle according to the 2-degree error distribution array.

The invention discloses a detection method of a vehicle transmission system, electronic equipment and a storage medium. The method comprises the steps that in response to a detection instruction for a vehicle transmission system, torques in different directions are applied to a motor in the vehicle transmission system on the basis of preset torque parameters, resolver signal values of the motor in different directions are obtained, and the resolver signal values are used for representing electric signal values output by a rotation position sensor of the motor; the rotation position sensor is used for monitoring position information of a rotor of the motor relative to a stator. Determining a transmission system gap of the motor based on the rotary transformer signal values in different directions; and detecting the vehicle transmission system based on the transmission system clearance to obtain a detection result. The technical problem of low detection accuracy of the vehicle transmission system in the prior art is solved.

The invention relates to a system (10) for de-icing the blades (14) of the propeller (12) of an aircraft, the system comprising an H-bridge inverter device (40); a rotary transformer (22) comprising a main primary winding (26), a primary measurement winding (28), and a secondary circuit (30) delivering a secondary alternating voltage (Vs); a rectifier device (50); a de-icing device (20); a control device (60) configured to control the switching elements of the inverter device in an out-of-phase manner, using the value of the voltage (Vpm) across the terminals of the primary measurement winding, measured during a measurement interval of predetermined duration starting at the instant (t11,t33) when the inverter device switches from a controlled state to a short-circuit state.

Disclosed are a non-contact rotary transformer and a motor comprising same. A non-contact rotary transformer according to the present invention is a device for connecting a rotor of a motor with an external power source in a non-contact manner, and is characterized by comprising: a core part disposed inside a hollow motor shaft in a coaxial structure with the motor shaft; a primary coil part installed on the outer circumferential surface of the core part; a secondary coil part which is installed on an inner main surface of the motor shaft and surrounds the primary coil part at a predetermined interval (air gap) therefrom; and a rectifier circuit part which is coupled to the motor shaft and rotates in synchronization therewith, and which is electrically connected to the secondary coil part.

The application discloses a kind of permanent magnet synchronous motor rotor initial position correction methods for electric vehicle, comprising the following steps: S 10, motor pre-positioning;S20, motor continuous positioning;S30, motor repeated positioning;S40, take the average of positioning angle;S50, take the rotor electric angle corresponding to each positioning angle sample value;S60, take the average of error of each position time sample value and actual value;S70, save average error value;S80, angle correction;The application realizes the correction of permanent magnet synchronous motor rotor initial position, solves the error generated in the process of installing rotary transformer as motor position feedback signal, ensures the consistency of permanent magnet synchronous motor rotor installation position in production process, improves the efficiency of entire drive system, reduces the probability that even can cause drive system failure in extreme situation, greatly improves the safety of drive system.

The invention relates to the technical field of automatic detection, in particular to a multi-channel synchronous measurement analyzer for rotary transformers and a control method, and the analyzer synchronously controls a plurality of slave acquisition mother set modules to perform signal acquisition on a plurality of rotary transformers through a master acquisition mother set module; a corresponding FPGA unit in the acquisition sub-board module synchronously controls a plurality of analog-to-digital conversion units to perform signal acquisition; in the collecting process, the FPGA unit conducts multiple times of phase deviation measurement according to analog signals input by the analog-to-digital conversion unit and digital signals output by the analog-to-digital conversion unit, and corresponding parameters in the RC filters are dynamically adjusted based on the multiple times of measurement results. And meanwhile, the inter-board synchronization module dynamically adjusts the calibration period, and adjusts the calibration period again after a plurality of times of calibration period adjustment, and is also used for adjusting the clock frequency of the corresponding FPGA unit. According to the invention, signal acquisition can be carried out on multiple rotary transformers at the same time, and the test efficiency is improved while the measurement precision is ensured.

The invention relates to an inductively excited synchronous machine (1) with a stator (2), with a rotor (3) rotatably mounted on the stator (2) about an axis of rotation (4), with a rotary transformer (5) having a stator-fixed primary coil (6) and a rotor-fixed secondary coil (7), and with a rotor-fixed rectifier (8), wherein the rotor (3) has a rotor shaft (9), a rotor lamination stack (10) arranged on the rotor shaft (9) and a rotor winding (11) arranged on the rotor lamination stack (10), and wherein the rotor winding (11) has a winding head (14, 15) projecting axially beyond the rotor lamination stack (10) and spaced radially apart from the rotor shaft (9) at each axial end face (12, 13) of the rotor lamination stack (10). A compact design can be achieved if the rotor (3) has a winding carrier (16, 17) on each axial end face (12, 13) of the rotor lamination stack (10), which rests axially on the rotor lamination stack (10) and on which the respective winding head (14, 15) rests axially and radially on the outside, and if one of the winding carriers (16, 17) has a rectifier receptacle (18) in which the rectifier (8) is arranged.

The application discloses a kind of calibration method and device for rotary variation soft decoding, calibration method includes: according to N times oversampling frequency respectively sampling rotary variation feedback sine and cosine feedback signal envelope surface and obtaining positive, cosine oversampling signal;Positive, cosine oversampling signal is handled to obtain the zero position offset of rotary variation positive, cosine envelope signal;Positive, cosine oversampling signal is handled to obtain the amplitude of rotary variation positive, cosine envelope surface;Positive, cosine oversampling signal is handled to obtain the phase deviation of rotary variation positive, cosine envelope surface;Through the amplitude, zero position offset, phase deviation obtained by calculation, the envelope surface of rotary variation positive, cosine is compensated, and the signal after compensation is sent into phase-locked loop to obtain the angle and rotational speed information of rotary variation.The application obtains accurate amplitude, zero position offset, phase difference in turn, and then carries out error compensation, finally obtains corrected positive, cosine signal, effectively guarantees the efficiency of motor.

The invention provides a fine adjustment device for the meshing depth of a transmission gear, which belongs to the technical field of attack angle sensors and comprises a flange bracket, a mounting bracket, a rotary transformer assembly, a damper assembly and a weather vane rotating shaft assembly, the rotary transformer assembly, the damper assembly and the weather vane rotating shaft assembly are fixed in the circular mounting groove through an eccentric mounting flange and are meshed with one another, and mounting bracket scale marks are arranged on the eccentric mounting flange and the circular mounting groove. According to the device, a linear relation is established between the meshing depth and the scale marks, and the gear meshing depth debugging process of all parts of the attack angle sensor, which is adjusted according to artificial experience, is converted into an indication value which can be directly visually observed. The requirement for experience of operators is lowered, unmeasurable artificial experience is solidified into measurable indication data, the debugging efficiency is improved, and the number of times of wind tunnel test verification caused by repeated debugging is reduced.

The invention provides an automobile rotary transformer zero-position self-learning device and method.The device comprises a host, the host is in communication connection with a motor control unit through a butt joint port, and the host is used for controlling the motor control unit to conduct rotary transformer zero-position self-learning; and judging whether the resolver zero self-learning is successful or not according to the resolver zero self-learning result. The method can be directly used for resolver zero-position self-learning after the driving assembly is replaced and resolver loading is carried out, and a series of cost, time and performance influences caused by direct replacement of the driving assembly are reduced.

The invention discloses a rotor position detection method for multiplexing a synchronous motor body as a rotary transformer, and the method comprises the following core steps: a, independent detection windings (2) are embedded in grooves of a stator (3), the number of detection coils contained in each phase of independent detection winding (2) is equal to 1 / 2n of the number of rotor salient poles (4), and n is a natural number smaller than 10; b, detection coil parameters of all the independent detection windings (2) are completely consistent, the electrical phase difference between the independent detection windings (2) of each phase is equal to 360-degree electrical angle divided by the phase number of the independent detection windings, and the independent detection windings (2) are uniformly distributed on the inner circumference of a stator slot; c, the independent detection windings (2) of all phases are sequentially connected in series end to end and then connected into a carrier signal generated by a carrier generator, and the real-time angle position of the rotor salient pole (4) is calculated through a precise full-wave rectifier, a potential translation circuit and a position conversion module. A solid rotor position sensor is abandoned, a synchronous motor body is reused as a core component of a rotary transformer, and sensorless rotor position detection is achieved; the device adapts to special working conditions such as high temperature, strong electromagnetic interference and full sealing; according to the invention, excitation current interference is eliminated, the detection precision is improved, position closed-loop control in a zero-speed-full-speed range is realized, the response speed is high, the control precision is high, the production cost is low, and the synchronous motor is suitable for various synchronous motors with rotor magnetic resistance anisotropy and circumferential uniform distribution, such as a new energy automobile dragging motor, a linear motor and a household appliance totally-enclosed compressor.

A rotary transformer is disclosed herein comprising a stationary portion and a rotating portion. The stationary portion includes a transformer housing, a primary coil positioned within the transformer housing and defining a central axis, and a stationary printed circuit board (PCB). The stationary PCB includes an excitation coil of an inductive position sensor and at least one sensing coil of the inductive position sensor. The rotating portion of the rotary transformer includes a rotating PCB with a secondary coil of the rotary transformer positioned on the rotating PCB. The rotating portion further includes a diode holder connected to the rotating PCB. The diode holder includes at least one target for the inductive position sensor.

The invention provides a diagnosis method and device for a rotary transformer, electronic equipment and a storage medium, and the method comprises the steps: collecting preset diagnosis data in a soft decoding process of the rotary transformer, carrying out the real-time verification of the diagnosis data, obtaining a verification result corresponding to each fault type, and carrying out the real-time verification of the verification result. And finally, generating a diagnosis result of the rotary transformer according to inspection results corresponding to all fault categories, thereby realizing acquisition of signals of the whole rotary transformer and monitoring of a soft decoding process.

The invention discloses a permanent magnet variable-pitch motor. The permanent magnet variable-pitch motor comprises a motor body, a brake mechanism and a rotary transformation mechanism, the motor body is provided with a driving side and a braking side which are arranged oppositely; the motor body, the braking mechanism and the rotary transformation mechanism are sequentially arranged in the direction from the driving side to the braking side; a rotating shaft is arranged in the motor body; the invention further comprises a rotary transformer stator disassembling and assembling method. The method comprises the steps that firstly, the rotary transformer cover is disassembled; and 2, under the action of external force, the movable head extends out towards one side far away from the sleeve part until the movable head and the sleeve part reach the maximum length. Different from a guide mechanism in the prior art, the sleeve piece can play a role of a rotary transformer rotor pressing plate in the prior art, and meanwhile, the peripheral side surface of the sleeve piece can serve as a guide surface for guiding the rotary transformer stator to be disassembled.

The application discloses a kind of redundancy servo systems based on nested screw drive, comprising: control computer, first / second redundancy branch chain, differential mechanism, position feedback mechanism and external load;First / second redundancy branch chain includes: first / second control module, first / second servo controller, first / second power driver, first / second servo motor, first / second rotary transformer, first / second brake, first / second reducer and first / second screw drive mechanism;Differential mechanism is connected with external load, differential mechanism directly bears the load situation introduced by external load, environmental condition situation;Position feedback mechanism is connected with differential mechanism, and the motion displacement signal of differential mechanism is collected by position feedback mechanism, and motion displacement signal is simultaneously fed back to first / second servo controller, to realize first / second control module position loop closed-loop control further.This application is in the consideration of system structure, volume weight index requirement, and greatly improves the reliability of system.

The utility model relates to a new energy commercial vehicle resolver signal detection circuit comprising a filter circuit comprising a first filter unit and a second filter unit, and the output end of the second filter unit outputs the positive differential output and the negative differential output of a resolver signal to a decoding chip; the differential circuit comprises a buffer amplification unit and a third filtering unit, the input end of the buffer amplification unit is connected with the second output end of the first filtering unit, the output end of the buffer amplification unit is connected with the input end of the third filtering unit, and the output end of the third filtering unit outputs a decoding signal; and the micro-control unit is connected with the output end of the third filtering unit, and the micro-control unit is used for judging the fault type of the rotary transformer in combination with the information of the decoding chip. According to the utility model, through combination of multi-stage filtering, differential signal processing and the micro-control unit, the stability of a rotary transformer signal can be effectively improved, and faults can be accurately diagnosed.

The compact electric drive assembly with the suspension fixing structure comprises a motor, the motor comprises a shell, a driving shaft and a rotary transformer, the driving shaft is arranged at one end of the front end of the shell to output torque, and the rotary transformer is arranged at the rear end of the shell and is coaxial with the driving shaft; the suspension fixing structure comprises a suspension threaded support arranged at the rear end of the shell and a suspension fixing support with one end connected with an automobile body, the other end of the suspension threaded support is connected with the suspension fixing support, and the projection area formed by the suspension fixing support at the rear end of the shell in the axial direction can be increased through the suspension threaded support. The connecting position of the suspension fixing support and the shell is moved to the position of the end face of the rear end of the shell through the arrangement of the suspension threaded support, then the overall longitudinal length of the shell and the suspension fixing support is reduced, the crumple installation distance between the electric drive assembly and the front anti-collision beam support is increased, and the safety performance of an automobile is improved.

The utility model relates to a marine direct-drive permanent magnet synchronous motor, which comprises a rotor, a conducting ring, a front bearing outer cover, a cylindrical roller bearing, a deep groove ball bearing, an end cover, a stator, a junction box, a bearing inner cover, a bearing sleeve, a rear bearing outer cover, a round nut, a rotary transformer, a convex panel type flat welding steel flange, a bearing support and a spiral water channel water-cooling base. A low-rotating-speed sailing mode is achieved, energy conservation and emission reduction of the ship are better facilitated, and the transportation cost is saved.

A rotary transformer with an integrated inductive position sensor is disclosed herein. The rotary transformer comprises a stationary side and a rotating side. The stationary side includes a core defining a central axis and a first printed circuit board (PCB) coupled to the core. A primary coil of the rotary transformer is positioned within the core concentric with the central axis. An excitation coil of an inductive position sensor and at least one sensing coil of the inductive position sensor is positioned on the first PCB. The rotating side includes a second PCB with a secondary coil of the rotary transformer positioned on the second PCB. Additionally, at least one target for the inductive position sensor positioned on the second PCB. The rotary transformer may be advantageously used to feed the rotor of a wound rotor synchronous machine.

The utility model discloses a stator assembly for a rotary transformer. The stator assembly comprises a stator iron core, an insulating framework, a leading-out wire structure and a fixing part, the insulating framework wraps the stator core, a groove is formed in the outer periphery of the stator core, the outgoing line structure is formed on the insulating framework, the fixing part is arranged in the groove, one end of the fixing part is fixedly connected with the outgoing line structure, and the other end of the fixing part is fixedly connected with the insulating framework. According to the stator assembly for the rotary transformer, the insulation framework and the outgoing line structure are connected through the fixing part, so that the strength of the outgoing line structure can be improved, the groove is formed in the stator iron core, the fixing part is embedded into the groove, interference with an installation space is avoided when the rotary transformer is assembled, and the installation efficiency is improved. The assembly of the rotary transformer is facilitated, the production cost is not increased, the production period is not prolonged, and the production is facilitated.

The application provides a five-degree-of-freedom magnetic suspension motor structure and an integrated design method thereof, relates to the technical field of magnetic suspension motors, and is composed of a rotating shaft, a protective bearing, a displacement sensor, a bearingless permanent magnet motor, a machine shell, a shaft-radial integrated magnetic bearing and a rotary transformer. The motor structure adopts an integrated structure of one bearingless permanent magnet motor and one shaft-radial integrated magnetic bearing, achieves five-degree-of-freedom suspension of the motor, reduces the number of magnetic bearing components, reduces the volume of the motor, can significantly improve the power density of the motor, and has a wide application prospect in the field of high-speed rotating mechanical equipment. The integrated design method comprises a design method of the bearingless permanent magnet motor, a design method of the shaft-radial integrated magnetic bearing, and a design checking method. Through series-parallel hybrid collaborative design of different components and an accurate magnetic circuit calculation method, the motor design time is shortened, and the design efficiency is significantly improved.

The invention discloses a sampling time determination method and device, a medium, a product and a transformer demodulation system. The method comprises: receiving a recovery signal output by a rotary transformer, the recovery signal being a signal generated by the rotary transformer in response to an excitation signal and a rotation angle of the rotary transformer, each signal period of the excitation signal including a first preset number of interruption points, and the first preset number of interruption points having corresponding numbers, wherein the number corresponding to the first interruption point in the signal period is an initial number; in response to the detected interruption point, sampling the recovery signal to obtain a sampling value corresponding to the interruption point; determining a target sampling value from the sampling values corresponding to the plurality of interruption points according to a preset peak value determination condition, and taking an interruption point number corresponding to the target sampling value as a target number; and determining demodulation sampling time of the recovered signal according to the initial number, the target number and the signal period. According to the embodiment of the invention, the sampling time can be accurately determined.

The application relates to the technical field of rotary transformers, in particular to a rotary transformer control protection circuit and a protection method thereof, wherein the circuit compares a feedback signal with a normal feedback threshold interval to determine the circuit state of the rotary transformer, can realize fast response to the abnormal state of the circuit, and thus protects the circuit in time. Meanwhile, when the feedback signal is in the normal feedback threshold interval, the feedback signal detection circuit can be regarded as an open circuit due to the high-impedance input characteristics of the comparator, the current of the feedback signal shared by the feedback signal detection circuit is very small, the feedback signal detection circuit cannot lower the amplitude of the feedback signal received by the AD decoding chip, the accuracy of the rotor angle calculated by the AD decoding chip is ensured, and the independence of protection and measurement is realized.

The application belongs to the field of mechanical structure design, and particularly relates to a mounting structure for eliminating tangential play of an angular position sensor of a radar scanner, comprising a steel sleeve fixing member and an inner ring fixing member sleeved in the center hole of the steel sleeve fixing member; the inner ring fixing member is provided with a guide pin, and the steel sleeve fixing member is provided with a pin hole for inserting the guide pin; the guide pin inserted into the pin hole limits the relative rotation of the inner ring fixing member and the steel sleeve fixing member; the extended part of the guide pin after being inserted into the pin hole is sleeved in the center hole of a play-eliminating steel sleeve, and the play-eliminating steel sleeve is fixed to the steel sleeve fixing member through a screw; the cooperation gap between the center hole and the guide pin is smaller than the cooperation gap between the pin hole and the guide pin, the tangential play of the rotary transformer installation can be completely eliminated, the axial looseness is maintained, the scanning precision is high, and the scanning positioning precision of the radar scanner is improved.

The invention discloses a hollow outer rotor single-channel winding type rotary transformer and system. The transformer comprises a stator, a rotor, an excitation winding, a sine signal winding and a cosine signal winding. The rotor is sleeved outside the stator; the rotor comprises magnetic conductive materials located at the two ends of the rotor, a gap is formed between the two magnetic conductive materials, and sine ripple structures are arranged on the surfaces, making contact with the gap, of the two magnetic conductive materials. The wave crests and the wave troughs of the two sine ripple structures are oppositely arranged; the excitation winding is arranged on the rotor; the sine signal winding and the cosine signal winding are arranged on the stator. The transformer has the advantages of being high in measurement precision and small in size.

1. The name of the design product: rotary transformer (RT5208-4). 2. The use of the design product: rotary transformer for new energy driven motor. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

A rotary transformer adjusting device is used for adjusting the zero position of a rotary transformer and comprises a machine shell with a gear disc, a movable flange arranged at one end of the machine shell in a sleeving mode and provided with a first flange block, a pressing block mechanically connected to one side of the first flange block and an adjusting gear arranged between the first flange block and the pressing block. Wherein the gear disc is meshed with the adjusting gear, the machine shell is used for being connected with the rotary transformer in an inserted mode, and the adjusting gear is rotated, so that the machine shell drives the rotary transformer to rotate through the gear disc; according to the utility model, through a transmission structure of the gear disc and the adjusting gear, the installation zero calibration precision of the rotary transformer is improved.

The invention relates to a rotary transformer (120) for providing an excitation current for a rotor (118) in an electric machine (102), in particular an externally excited synchronous motor, comprising a transformer stator and a transformer rotor, wherein the transformer stator and the transformer rotor are arranged in an interior (133, 134) of the rotor (118), wherein the transformer stator has a stator magnetic core, wherein the transformer rotor has a rotor magnetic core, wherein the stator magnetic core and / or the rotor magnetic core comprise multiple ring segments (136a-c) distributed in a circumferential direction, wherein elongated gaps (141, 143) are formed between neighbouring ring segments (136a-c), in which one or more coolant channels (142, 144) are arranged, with at least regions extending in an axial direction and for guiding a coolant. The invention also relates to a rotor (118), an electric machine (102) and an at least partially electrified vehicle (100).

A motor assembly includes a brushless electric motor including a motor stator and a motor rotor configured for rotating within the motor stator. The motor stator includes a plurality of windings. The brushless electric motor also includes a rotor shaft non-rotatably connected to the motor rotor for rotating with the motor rotor and a resolver position sensor including a resolver stator and a resolver rotor configured for rotating within the resolver stator. The resolver rotor is non-rotatably connected to the rotor shaft for rotating with the rotor shaft. The resolver stator generates a signal based on a rotational position of the resolver rotor. The brushless electric motor also includes a rotor shaft bearing coupled to the rotor shaft and a bearing support supporting the rotor shaft bearing to allow the rotor shaft to rotate with respect to the bearing support. The bearing support is or includes an electromagnetic interference shield to reduce or block electromagnetic waves emitted by the windings of the motor stator from interfering with the signal generated by the resolver stator.