1335 results about "Electrical drive" patented technology

The invention provides an electrostatic driving micro-electro-mechanical device and a driving method thereof, the device comprises at least one electrostatic driving micro-electro-mechanical device, the device comprises a rotating support and at least one one-dimensional direction driving unit, and the first one-dimensional direction driving unit comprises a first electrode and a second electrode which are arranged in the first direction of the rotating support; the electrostatic drive micro-electromechanical device is further provided with a controller, the controller outputs digital signals to the digital-analog converter, the digital-analog converter outputs analog signals to the first electrode and the second electrode through the multi-way change-over switch, the multi-way change-over switch comprises a first selection switch, the first selection switch is a single-pole double-throw change-over switch, and the second selection switch is a single-pole double-throw change-over switch. A static contact of the first selection switch receives an analog signal output by the digital-to-analog converter, and a movable contact of the first selection switch selectively outputs the analog signal to the first electrode or the second electrode. The invention further provides a driving method of the driving device. The electrostatic driving micro-electro-mechanical device is compact in structure and low in production cost.

The invention provides a piezoelectric self-feedback excitation type miniature electric field sensor, an electric field detection method and a sensor, and is applied to the technical field of electric field sensors. The piezoelectric self-feedback excitation type miniature electric field sensor comprises a substrate used for supporting a vibration pickup reference structure, a piezoelectric driving structure, a mutual shielding electric field sensing structure and an elastic beam; the piezoelectric driving structure is used for enabling the piezoelectric driving structure to deform under the condition that driving voltage is applied to the piezoelectric driving structure so as to enable the elastic beam to generate vibration; the mutual shielding electric field induction structure is used for responding to the vibration of the elastic beam, and the mutual shielding electric field induction structure outputs an induction current signal in a differential form so as to suppress common-mode noise and detect the amplitude intensity of a to-be-detected electric field; and the vibration pickup reference structure is used for responding to the vibration of the elastic beam and outputting a reference current signal so as to adjust the magnitude of the driving voltage and enable the output sensitivity of the piezoelectric self-feedback excitation type miniature electric field sensor to be a preset value.

The invention discloses a variable frequency driving device energy recovery control system based on direct power supply of a high-voltage power grid, and relates to the technical field of electrical transmission and energy recovery control. Updating the power grid impedance model in real time by using a complex impedance calculation method; load operation state parameters are dynamically adjusted in combination with motor end output power, rotating speed change and torque calculation; according to the method, regenerative energy is accurately calculated, a feedback path is adjusted according to voltage fluctuation and frequency deviation of a power grid, a feedback current fluctuation ratio and a power factor are monitored, a feedback path conduction proportion is optimized in real time, when the current is unstable or the power factor is abnormal, a suboptimal path is automatically switched, and continuous and stable operation of a system is guaranteed; according to the invention, the energy feedback efficiency and the power grid compatibility of the high-voltage power grid variable-frequency driving device are effectively improved, and the method is suitable for energy feedback application of a high-power motor driving system.

A meter socket adapter (MSA) for connecting a battery energy storage system (BESS) to a household microgrid through a meter combo load center. The MSA includes: a housing matching an electricity meter and a meter socket in the meter combo load center; a plurality of power conductors that connect among the electricity meter, the meter socket, and BESS; a meter interconnection device (MID) switch for connecting a utility grid or one or more distribution energy resource (DER) devices to supply power to household loads in the household microgrid; a MID driving circuit for driving the MID switch to close or open; and a thermal management circuit couple with a plurality of temperature sensors disposed at each high current connection point to prevent overheat.

The utility model discloses a slicing mechanism for frozen beef and mutton, which belongs to the technical field of beef and mutton processing, and comprises a machine base, a conveying table, sliding rails, electrically driven sliding blocks, a push plate, a knife edge groove, a mounting plate and a top plate, the conveying table is arranged on one side of the top of the machine base, the sliding rails are arranged on the two sides of the conveying table, and the electrically driven sliding blocks are arranged on the outer sides of the sliding rails in a sliding manner; a mounting plate is mounted on the top of the machine base close to the knife edge groove through a support, and a top plate is mounted on the top of the mounting plate through supporting columns. The cutting mechanism is arranged, an electric cylinder B, an installation cutter groove, a sliding edge, a cutter, an installation sliding block and a sliding groove are used in cooperation, the cutter can be conveniently disassembled and assembled, the cutter can be conveniently replaced according to the cutting requirement, the sliding edge made of rubber is matched with the sliding groove, the fixing firmness of the cutter can be improved, and the cutting efficiency is improved. And the sliding edge made of rubber can be used for unloading the stressed cutter, so that the service life of the cutter is prolonged.

A multiphase inverter for an electric drive system comprises multiple X-type multi-stage power converters positioned between a high-voltage DC power supply and an electric machine. Each of the multiple X-type multi-stage power converters is an integrated solid-state circuit (IC) comprising a positive DC power bus, a negative DC power bus, a neutral bus, and multiple semiconductor switches arranged in a stacked configuration. The multiple semiconductor switches are interconnected via the positive DC power bus, the negative DC power bus, and the neutral bus.

The invention relates to a method for operating a vehicle driven by at least one electric drive unit (3). According to the invention, at least before the vehicle starts moving from a standstill and the vehicle's brake device (6) is activated based on a mechanical friction brake principle, a holding torque is generated by the electric drive unit (3) to hold the vehicle at a standstill, and then the brake device (6) is released. Alternatively or additionally, when the vehicle is decelerating to a standstill, braking to a standstill is initiated at least shortly before reaching a standstill exclusively by means of a braking torque (M) generated by the drive unit (3). B) carried out, at the earliest after reaching standstill the braking device (6) is activated to generate a friction brake holding torque to hold the vehicle at standstill and after reaching the friction brake holding torque the generation of the holding torque carried out by means of the drive unit (3) is stopped. The invention further relates to a device (1) for operating a vehicle powered by means of at least one electric drive unit (3).

The invention relates to an electric drive device (10) for a motor vehicle comprising a housing (18), at least one electric machine (20) which has at least one rotor (24) rotatable about an axis of rotation (26) relative to the housing (18), at least one planetary gear set (28) arranged in the axial direction of the electric machine (20) next to the electric machine (20), which has a sun gear (30) non-rotatably connected to the rotor (24), a planet carrier (32) forming an output of the planetary gear set (28) and rotatable about the axis of rotation (26) relative to the housing (18), planet gears (38) rotatably held on the planet carrier (32) and a ring gear (36) non-rotatably connected to the housing (18), and a cooling and lubrication system (44) which has a pump (46) for pumping a cooling and lubricating medium.The cooling and lubrication system (44) includes a receiving area (48) in which the cooling and lubrication medium can be received, forming a sump (50).

The invention relates to the technical field of high-speed conductive driving, in particular to a high-speed conductive driving device for ultrahigh-speed ring type packaging equipment and a working method. The device comprises a gantry main body frame, a lifting frame assembly, an automatic film feeding and breaking assembly and a high-speed film frame assembly are arranged on the gantry main body frame, the gantry main body frame is composed of a cubic frame structure formed by connecting four cross beams with supporting legs and then fixedly connecting the four cross beams with the ground, and the lifting frame assembly is fixedly connected to the supporting legs. And displacement lifting is carried out in the gantry main body frame along the supporting leg direction. In a similar ratio test of 80Rpm, an existing structure can cause noise of 50dB to the maximum extent, the novel patent structure can avoid the problem, the test shows that the sound in motion can reach 20dB to the maximum extent, and the technical effects that noise pollution is effectively reduced, and the noise is low are achieved.

The invention relates to a method for temperature control of a traction battery (110) and a passenger compartment (140) of an at least partially electrically powered vehicle in a heating mode, comprising heating a first temperature control medium using heat generated by at least one electric drive unit (120) used to power the vehicle, transferring (115) at least a portion of the heat absorbed by the first temperature control medium to a refrigerant used for temperature control of the passenger compartment (140), and transferring (135) at least a portion of the heat transferred from the first temperature control medium to the refrigerant to a second temperature control medium used for temperature control of the traction battery (110). Furthermore, a computing unit and a computer program for carrying out such a method and a corresponding temperature control system (100) are proposed.

A multiphase inverter for an electric drive system comprises a multitude of H-type multilevel power converters arranged between a high-voltage direct current (HVDC) supply and an electric machine. Each of the multitude of H-type multilevel power converters is an integrated solid-state circuit (IC) comprising a positive DC power bus, a negative DC power bus, a neutral bus, and a multitude of semiconductor switches arranged in a stacked configuration. The multitude of semiconductor switches are interconnected via the positive DC power bus, the negative DC power bus, and the neutral bus.

An array of spin qubits relies on a gradient magnetic field to ensure that the qubits are separated in frequency in order to be individually addressable. Furthermore, a strong magnetic field gradient is required to electrically drive the EDSR of the qubits. Quantum dot devices and related methods and systems that integrate magnetic materials in the gates to provide a gradient magnetic field are disclosed. Magnetic materials in different gates may be of different heights to improve frequency separation of neighboring qubits. Unlike previous approaches to quantum dot formation and manipulation, various embodiments of the quantum dot devices disclosed herein may enable improved control over magnetic fields and their gradients to realize better frequency targeting of individual qubits, help minimize adverse effects of charge noise on qubit decoherence and provide good scalability in the number of quantum dots included in the device.

The invention relates to an electrically-driven deep sea winch active wave compensation control method based on ship motion prediction. The method comprises the steps of data collection, optimization and training of a motion prediction model, ship motion prediction, prediction controller signal generation, feedback controller signal generation, control signal synthesis and control execution. According to the control method, the active wave compensation capability of the winch system under the complex sea condition is improved by adopting the motion prediction control method based on the LSTM model and PSO optimization. According to the method, a more accurate control basis is provided by predicting the future motion state of the laying lifting point in a high-precision manner, and hyper-parameters of the LSTM are adjusted through a PSO optimization algorithm, so that the prediction model keeps the optimal performance under different sea conditions. According to the system, predictive control is combined with feedback control, rapid response and accurate control in complex sea condition changes are ensured, the response lag and oscillation problems are effectively reduced, and the rapidity and reliability of active wave compensation of a winch system in deep sea operation are improved.

The utility model belongs to the technical field of stroke detection of driving elements, and particularly relates to a stroke detection device of a thread piezoelectric actuator, which comprises a sliding seat integrated in the thread piezoelectric actuator, and the sliding seat is configured to rotate relative to a screw rod and can synchronously move along with the screw rod along the axial direction of the screw rod; a limiting assembly is arranged between the sliding base and the base and can prevent the sliding base from rotating relative to the base. The reading head and the encoder are oppositely arranged. According to the utility model, through arranging the sliding seat which is rotatably connected with the screw rod and slidably connected with the base and prevents rotation through the limiting assembly, the composite motion of the screw rod is decomposed into pure axial translation of the sliding seat relative to the base, and the reading head and the encoder are respectively arranged on the sliding seat and the base or the screw rod and the sliding seat, so that the closed-loop control of the thread piezoelectric actuator is realized; and the driving precision and the long-term reliability under various loads and working conditions are obviously improved.

The invention provides a filler spray tower for waste gas treatment. A tower body comprises a tower bottom, a tower cover and at least one layer of tower body, spraying structures are mounted at the bottoms of the tower cover and the tower body; the pumping device is used for pumping spraying liquid to each spraying structure; a first bracket is fixedly mounted at the bottom of the tower body, and a spraying structure of the tower body is mounted at the bottom of the first bracket; a supporting net is fixedly arranged on the top surface of the first bracket and is used for supporting and placing the filler; a stirring structure is rotationally mounted in the center of the first bracket, and a stirring frame of the stirring structure is located above the supporting net; a driving structure is mounted at the bottom of the first bracket and is in transmission connection with the stirring structure, and the pumping device provides driving power for the driving structure; the filler can be stirred, the position of the filler is changed, and the utilization efficiency and the purification effect are improved; moreover, the pumping device is used for conveying the spraying liquid as driving power, an electric driving structure does not need to be additionally arranged, and the design and layout difficulty of the whole structure is reduced.

The invention provides an assembly for movably holding a component and a method for positioning a component relative to an electrode for an electrically driven plating process. The assembly includes a tool assembly and a device. The tool assembly includes a tool base and a carrier. The tool base includes a frame and a guide. The frame is configured to hold the component. A guide is associated with the multi-axis path. The carrier is movably coupled to the guide. The device is coupled to the carrier and is movable with the carrier along a multi-axis path.

A dampening device that can be coupled to a medical implant to eliminate harmful electrical oscillations. The device includes circuity that detects harmful electrical oscillations in the implant. The device also includes circuity that generates cancelling electrical signals that counter the detected electrical oscillations. Alternatively, in a medical implant having a taper junction such as a standard hip implant, resistance welding of the taper junction just prior to surgical implanting may be performed after the appropriately dimensioned components are selected to eliminate a metal on metal interface where corrosion is most likely to occur.

A power supply circuit having a current control mechanism is provided. The power supply circuit includes a charging driver, a plurality of input current processing circuits, a charging circuit and a control circuit. The charging driver includes a plurality of switch components and a driver circuit. The control circuit controls the plurality of input current processing circuits respectively to switch the plurality of switch components. At least one of a plurality of input currents that are supplied by a plurality of external input power sources flows to the driver circuit through at least one of the plurality of switch components. The driver circuit transmits the at least one of the plurality of input currents to the charging circuit, and drives the charging circuit to use the at least one of the plurality of input currents to charge an electronic device.

The invention relates to the technical field of optical devices, and particularly discloses a preparation method of an electrostatic drive MEMS Fabry-Perot filter, an SOI wafer is used as a first substrate, top silicon of the SOI wafer is used as a drive structure of the MEMS Fabry-Perot filter, the thickness and mechanical characteristics of a cantilever can be accurately adjusted, and the MEMS Fabry-Perot filter can be manufactured. And meanwhile, the silicon dioxide insulating layer of the SOI wafer can also be used as an etching stopping layer, so that the condition of excessive etching is avoided, and the manufacturing yield of the filter is further improved. When the bonding layer and the silicon dioxide insulating layer of the SOI wafer are etched, an etching method combining advanced oxide etching and reactive ion etching is adopted, isotropy and anisotropy are integrated, and the limitation of a single process is overcome. A certain dislocation amount of linear offset is reserved during patterning of bonding metal, gold-tin eutectic bonding is adopted, the problem of leading-out of top and bottom electrodes is solved, and the machining cost and uncertainty are reduced.

The invention is suitable for the technical field of test equipment, and provides a piezoelectric actuator test device and method, and the piezoelectric actuator test device comprises a main frame body, a clamping force application mechanism, an electric connection mechanism and a displacement detection mechanism. The first clamping assembly is fixedly arranged on the main frame body, and the force loading assembly drives the second clamping assembly to move so as to clamp and fix a sample. A force sensing unit is arranged between the driving end of the force loading assembly and the second clamping assembly and is used for detecting the thrust applied to the second clamping assembly and the sample by the force loading assembly and the counter-acting force applied to the second clamping assembly by the sample. The test voltage applied to the sample can be adjusted and detected through the electric connection mechanism, and the position of the second clamping assembly, namely the length change of the sample, is detected through the displacement detection mechanism. Through cooperation of the clamping force application structure, the displacement detection mechanism and the electric communication mechanism, measurement of a blocking force parameter, a rigidity parameter and a maximum displacement parameter of a sample can be realized.

The invention relates to a control arrangement for operating a motor vehicle locking system (2), wherein the control arrangement (1) is configured to control an electric drive (3) of the motor vehicle locking system (2) upon detection of an operating event, in order to provide a motorized locking function for an adjustable locking element (4) of the motor vehicle (5), wherein the control arrangement (1) has a signal input (7) for detecting the operating event, which is provided for connection to at least one query element (8) of the motor vehicle (5). It is proposed that the control arrangement (1) continuously stores the signal level of the signal input (7) and that the operating event is deemed to have been detected when a comparison of the current signal level at the signal input (7) with a previously stored signal level exceeds a predetermined deviation.

The invention provides a green-electricity-driven oil field drilling and production equipment control method, system and equipment and a storage medium, and the method comprises the steps: carrying out the rolling prediction of the load power of a drilling machine in a future time window based on the mapping correlation characteristics between a load power demand and a stratum structure and the working condition information in an oil field drilling and production process; the transient peak value of the load power of the super capacitor of the drilling machine in the next operation period is obtained; when the transient peak value is greater than a preset compensation threshold value, performing constraint scheduling on the transient load power of the super capacitor by using a power optimization model to obtain a confidence compensation amount of the transient load power in the super capacitor; and when the drilling machine is in an oil field drilling and production transient working condition, an emergency regulation factor of the drilling machine in the transient working condition is determined through the confidence compensation amount and the rated power of the drilling machine, and then power distribution of the super capacitor and diesel power generation in the next control period of the drilling machine is subjected to confidence regulation based on the emergency regulation factor. Based on the scheme, balanced green power distribution under the transient working condition of the drilling machine can be realized.

A motor vehicle door lock having a locking mechanism with a rotary latch and at least one pawl, wherein the rotary latch can be engaged in at least one engaging position by means of the pawl; a release lever, wherein the locking mechanism can be transferred from the engaging position to a release position by means of the release lever; an electrical drive unit and an actuating lever, wherein the actuating lever can be actuated by the drive unit and the locking mechanism can be unlocked at least indirectly by means of the actuating lever, wherein the actuating lever and a gearwheel of the drive unit can be mounted on a common shaft.

A short-circuit protection circuit in a battery protection system having a battery, a charge switch and a discharge switch connected in series. The short-circuit protection circuit includes: a drive unit having a first output terminal coupled to a control terminal of the discharge switch and a second output terminal coupled to a control terminal of the charge switch, and configured to output a discharge drive signal through the first output terminal to turn on or off the discharge switch, and output a charge drive signal through the second output terminal to turn on or off the charge switch; and a short-circuit detector configured to perform a short-circuit protection when the short-circuit occurs. One of the charge drive signal, the discharge drive signal and a power supply having a higher voltage is configured to supply power to the short-circuit detector.

The invention relates to the technical field of precision positioning tables, and discloses a heavy-load piezoelectric deflection table which comprises a shell, an amplification piezoelectric driver and a moving carrier plate. The shell comprises a hollow rectangular-ambulatory-plane rectangular ring cavity. And the amplification piezoelectric actuator is arranged in the rectangular ring cavity. And the amplification piezoelectric drivers comprise two X-axis amplification piezoelectric drivers, two Y-axis amplification piezoelectric drivers and four Z-axis amplification piezoelectric drivers. And the moving support plate is arranged above the amplification piezoelectric actuator and comprises a rectangular annular X-axis moving support plate, a rectangular annular Y-axis moving support plate and a rectangular annular Z-axis moving support plate. The XY-axis movement carrier plate comprises an X-axis movement carrier plate and a Y-axis movement carrier plate. The X-axis amplification piezoelectric actuator, the Y-axis amplification piezoelectric actuator and the Z-axis amplification piezoelectric actuator are connected in series in the X-axis plane, the Y-axis plane and the Y-axis direction, so that thetaX-axis deflection and thetaY-axis deflection and Z-axis linear motion are achieved. The system has the advantages of small series structure coupling, high bearing capacity, high closed-loop repeated positioning precision and high adaptability.

The invention discloses a machining method for an input shaft of an electric drive assembly generator. The machining method comprises the following steps of first finish turning, second finish turning, gear hobbing, spline broaching, heat treatment, spline hard broaching, outer circle and end face grinding and gear grinding. In the step of hard pulling of the spline, the internal spline is subjected to hard pulling after being heated, the large diameter, the small diameter and the tooth side of the internal spline are subjected to hard pulling, and the precision of the internal spline subjected to heat treatment is corrected. In the step of grinding the outer circle and the end face, an internal spline of the input shaft of the generator is expanded, the end face and a center hole are positioned, and the outer circle and the end face of the input shaft of the generator are ground. In the gear grinding step, the internal spline of the input shaft of the generator is expanded, the end face is positioned, and gear grinding is conducted on the gear. Thermal deformation of the internal spline is corrected after heat treatment, then the internal spline is adopted as a standard for machining of subsequent procedures, the standard is unified, and it is guaranteed that the internal spline of the generator input shaft and the external spline of the generator rotor are well matched, torque is transmitted, a bearing operates stably, and operation stability of an electric drive assembly is guaranteed.

The invention relates to a control arrangement for the operation of a motor vehicle locking system (2), wherein the motor vehicle locking system (2) has a drive (3) with an electric drive motor (4) for providing a motorized locking function for an adjustable locking element (5) of the motor vehicle (6), wherein the control arrangement (1) is configured to control the drive (3) upon receiving an operating event, wherein the control arrangement (1) has an electrical energy storage device (9) with at least one capacitor (10), wherein the control arrangement (1) provides an emergency supply voltage to the drive (3) by means of the energy storage device (9) in an emergency operation, in particular in the event of a failure of the vehicle's (6) electrical system.It is proposed that the control arrangement (1) independently of receiving the operator event performs a diagnostic routine in which the control arrangement (1) partially discharges the capacitor (10) over a diagnostic period, and in which the control arrangement (1) determines at least one electrical characteristic of the capacitor (10) based on a time-dependent voltage profile of the capacitor (10) during discharge.

The invention relates to the technical field of electrical measurement and wireless communication, in particular to an insulating rod current and voltage measurement system based on wireless transmission, and aims to solve the problems of low efficiency, limited range and high safety risk of existing single-phase grounding fault troubleshooting. The system comprises a portable measurement and acquisition subsystem and a handheld terminal analysis subsystem; the measurement and acquisition subsystem integrates high-precision synchronous sensing, electromechanical driving and wireless communication and can synchronously acquire current and voltage in a non-intrusive manner; and a multi-feature fusion and space-time association algorithm is embedded in the terminal analysis subsystem and is used for fault diagnosis and accurate positioning. The system can accurately measure and analyze the current and the voltage of the distribution line under the non-power-off and non-intrusive conditions, can quickly and accurately position the single-phase earth fault, remarkably shortens the troubleshooting time, and reduces the economic loss and the safety risk.

The utility model provides a self-service tableware distribution device which comprises a housing and at least one set of stock bin mechanism arranged in the housing, the stock bin mechanism comprises a tableware containing bin and a tableware blanking bin, the tableware containing bin is used for stacking and storing tableware, and the tableware blanking bin is sequentially provided with an upper mold, a middle mold and a lower mold. The three parts are respectively provided with channels for controlling the sequential falling of tableware; in the initial state, the middle mold is aligned with the upper mold and staggered with the lower mold, and when a user presses a switch or pulls tableware, channels between the molds are in linkage alignment, and a single piece of tableware is released to a taking position; the tableware head triggers the linkage assembly in the taking process, the middle mold is driven to reset, and preparation of the next piece of tableware is achieved. The device provided by the utility model is reasonable in structure, does not need to be electrically driven, completes tableware distribution by means of mechanical linkage, has the advantages of automatic control, single-support taking, sequential supply, pollution prevention and the like, and is suitable for cafeteria, shared kitchens, enterprise canteens and other scenes.