667results about "Dynamo-electric machines" patented technology

The invention relates to the technical field of power transmission line self-energy-taking, and discloses a power transmission line self-energy-taking device and a state detection system, and the device comprises a housing structure, a motion structure, an electromagnetic power generation structure, and a friction power generation structure. Wherein the moving structure is composed of a permanent magnet, a spring and a fixing groove, the vertical shell and the fixing groove are connected through the spring, and a spring mass vibration system is constructed; the electromagnetic power generation structure generates power through relative movement of a permanent magnet and a coil. The friction power generation structure generates power through sliding separation of sliding electrodes on the side faces of the fixing grooves and electrodes in the side shells. The invention further discloses a state detection system, vibration energy is collected through the device and stored in an energy storage battery through an energy management circuit to supply power to a sensor detection circuit, and data are sent to an upper computer through a wireless transmission module. The power transmission line state real-time detection without external energy supply can be realized, and the problem of power supply of monitoring equipment in remote areas is solved.

A method is proposed for determining a zero-force reference position of a wet-running brush actuator (2) for external excitation of a rotor of an electric motor (EM) arranged on a rotor shaft (RW). While an electric vehicle with an electric motor (EM) is stationary and the rotor is externally excited, a spindle (10) of the brush holder (2), which has an electric stepper motor (4) with an integrated spindle drive, is moved away from the grinding brushes (B1, B2) until the contact between the grinding brushes (B1, B2) and the associated slip rings (SR1, SR2) reaches a contact quality limit, the position assumed by the spindle (10) being defined as the zero-force reference position, from which the steps of the stepper motor (4) are counted in order to variably press the grinding brushes (B1, B2) against the slip ring (SR1, SR2) as required. In addition, a computer program, a computer program product, a system, and an electric vehicle are proposed.

This specification describes a transducer configured to convert electrical signals into vibrational movement. The transducer comprises an axially-magnetised reciprocating magnet, wherein the axially-magnetised reciprocating magnet comprises an aperture such that the reciprocating magnet has an inner boundary and an outer boundary.The transducer further comprises at least two pairs of concentrically positioned electromagnetic solenoids, the at least two pairs of concentrically positioned electromagnetic solenoids being configured to drive the reciprocating magnet to reciprocate in a volume above and below the reciprocating magnet. The first solenoid of each of the pairs of concentrically positioned electromagnetic solenoids is positioned to influence the reciprocating magnet at the inner boundary more than at the outer boundary, and a second solenoid of each of the pairs of concentrically positioned electromagnetic solenoids is positioned to influence the reciprocating magnet at the outer boundary more than at the inner boundary. The reciprocating magnet is suspended in the mid-point of its axial travel at a null position using either mechanical springs or magnetic springs.

The utility model relates to the field of conducting rings, in particular to a conducting ring for an oil cooling shaft, which comprises a conducting ring casting, the conducting ring casting is of an annular structure, the inner wall of the conducting ring casting is fixedly connected with a mounting ring, carbon fiber yarns which are arranged at equal intervals are mounted on the mounting ring, and shaft static electricity is transmitted to the conducting ring casting through the carbon fiber yarns. According to the utility model, shaft static electricity generated by the motor rotating shaft is transmitted to the conductive ring casting by using the carbon fiber yarns and is further transmitted to the motor shell, so that the shaft static electricity is effectively prevented from being accumulated on a bearing or other conductive parts, the risks of local overheating and bearing abrasion are reduced, the operation reliability of the motor is remarkably improved, and the service life of the motor is remarkably prolonged. Through the arrangement of the rubber oil baffle plate, not only is excessive engine oil prevented from being in contact with the carbon fiber yarns, but also the rubber oil baffle plate is convenient to replace and clean through the detachable locking nut and positioning block structure, and the maintenance cost and time are reduced.

The invention discloses a vibration energy recovery framework and a control method, and belongs to the technical field of vibration control, the vibration energy recovery framework comprises a mounting shell mounted on a rack, one end of the mounting shell is connected with a guide rod, the guide rod is slidably connected with a mass block, the mass block is fixedly provided with a permanent magnet, the permanent magnet is used for generating a magnetic field, and the magnetic field is used for generating vibration energy. The guide rod is sleeved with a damper shell, and a coil is wound on the damper shell. The vibration energy recovery device has the advantages that vibration energy is recovered while vibration is reduced, and energy conservation and emission reduction are achieved.

According to the electromechanical transient estimation method and system based on robust H infinite unscented particle filtering, on the basis of a dynamic estimation model of a generator, unscented particle filtering iteration solution is adopted; determining an estimation error covariance matrix by using a positive scalar parameter of a system uncertainty error defined based on a robust H infinity theory, a state prediction error covariance matrix and a cross covariance matrix of a predicted value and a measured value, and updating a Kalman gain; based on the state variable, estimating an error covariance matrix to establish suggested distribution, and resampling from the suggested distribution to obtain a new particle set; updating a dynamic estimation model of the generator by using the corrected system noise covariance matrix and the observation noise covariance matrix, and solving an obtained state variable estimation value by adopting unscented particle filter iteration; taking the state variable estimation value and the weighted mean value of the weight thereof as an electromechanical transient estimation result of the generator; the problems of accuracy and robustness caused by communication noise and uncertainty of model parameters in the dynamic estimation process of the generator are solved.

The present invention is a mechanical energy harvesting generator of electricity, comprising a coil structure including a winding of an electrical conductor disposed over a coil length, and capable of inducing electricity therein in the presence of a moving magnetic field provided by a movable magnet, wherein the winding includes an aperture about which the electrical conductor is wound and having a path through the coil structure substantially parallel with the length that receives the movable magnet. A magnet is disposed to be movable in response to motions applied externally to the coil structure along the path through the coil aperture, and having magnetic poles disposed to provide the moving magnetic field experienced by the coil as the magnet is moved along the path, further characterized in that a metallic glass layer is disposed around the coil structure and a winding outer surface.

The invention discloses a device for converting mechanical energy into electric energy, relates to the technical field of energy collection, and aims to solve the problems of unbalanced voltage and current output characteristics and low energy recovery efficiency in the traditional single-mode energy capture technology. Mechanical vibration is converted into electric energy through the direct piezoelectric effect; an electromagnetic energy harvesting module is further arranged in the shell, and electricity is generated according to the electromagnetic induction principle; the frequency self-tuning mechanism is connected with the electromagnetic energy harvesting module and is used for adaptively adjusting the frequency response range of the electromagnetic energy harvesting module according to the vehicle speed and the road condition change; the energy collection circuit board is connected with the output end of the piezoelectric energy harvesting module and the output end of the electromagnetic energy harvesting module and used for converting collected alternating current into stable direct current. Through a piezoelectric and electromagnetic composite structure, collaborative improvement of output voltage and current is achieved, the frequency response range is widened through the frequency self-tuning mechanism, and self-adaptive efficient energy capture of broadband vibration is achieved.

A magnified linear power generation system includes a vehicle with a tractor, or other tow vehicle, and a trailer, the trailer being separable from the tractor, the vehicle including at least one force receiving surface, the force receiving surface receiving input forces from the ground as the vehicle moves across the ground. A power generator is mounted to the trailer, the power generator including a stator and a mover. A mechanical magnification component is coupled between the power generator and the vehicle, the mechanical magnification component including a first hydraulic cylinder connected to the force receiving surface and a second hydraulic cylinder connected to the power generator, the first hydraulic cylinder having a first cylinder diameter, the second hydraulic cylinder having a second cylinder diameter smaller than the first cylinder diameter, wherein the first hydraulic cylinder is connected to the second hydraulic cylinder by a hydraulic line extending between the tractor and the trailer.

The application provides a kind of energy storage device, it relates to energy conversion technical field.The energy storage device includes: annular energy storage coil;Permanent magnet is configured to be able to move relative to energy storage coil along the axial direction of energy storage coil;Annular compensation coil is coaxially sleeved on the periphery of permanent magnet, and is configured to move synchronously with permanent magnet, and the magnetic flux of energy storage coil changes and generates induced current in the process of approaching energy storage coil: mechanical energy is converted into electromagnetic energy and is stored;Compensation coil is configured to generate the same magnetic field as the magnetic field direction of permanent magnet, to compensate the reverse magnetic flux generated by energy storage coil under the action of permanent magnet.

This utility model discloses a low-power wireless sensor network monitoring device, including a housing, a signal transmitting mechanism, and a vibration monitoring mechanism. A fixed base is fixedly installed at the lower end of the housing, and the signal transmitting mechanism is fixedly installed at the upper end of the housing. The probe moves up and down along the inner wall of the fixed base due to the amplitude of the vibration. During the movement of the fixed base, the magnet at its upper end moves along the trajectory, thereby moving up and down inside the induction coil boss. In this process, electrical energy is generated. At the same time, the vibration monitoring mechanism detects the vibration signal. The electrical energy generated by the triggering mechanism and the vibration signal detected by the vibration monitoring mechanism are both transmitted to the signal transmitting mechanism. The electrical energy is used to wake up the signal transmitting mechanism and enable it to transmit the signal detected by the vibration monitoring mechanism. After the signal is transmitted, the signal transmitting mechanism enters sleep mode again, so that the device only transmits signals when vibration occurs, which greatly reduces the energy consumption of the device and allows the device to monitor for a long time.

The utility model relates to the technical field of thermo-acoustic power generation, and provides a low-vibration thermo-acoustic magnetohydrodynamic power generation device which comprises a thermo-acoustic engine and a liquid metal magnetohydrodynamic power generator, and the thermo-acoustic engine comprises an engine assembly and an air reservoir; the liquid metal magnetohydrodynamic generator comprises at least two magnetohydrodynamic power generation channels, every two magnetohydrodynamic power generation channels are symmetrically arranged, one end of each magnetohydrodynamic power generation channel is connected with the engine assembly, the other end of each magnetohydrodynamic power generation channel is connected with the air reservoir, and each magnetohydrodynamic power generation channel is filled with liquid metal. A first magnet and a second magnet are arranged on the outer wall of the magnetofluid power generation channel, and at least one electrode pair is embedded in an insulating layer of the magnetofluid power generation channel and located on the channel wall parallel to the magnetic field direction. In the operation process, force generated by liquid metal flowing, magnetic field interaction and the like counteracts each other in the symmetrical direction, force balance and moment balance are achieved on the whole, and ultralow-vibration operation is achieved.

A non-Cartesian coordinate positioning machine is provided, including a first platform and a second platform, and a plurality of extendable leg assemblies arranged between the first platform and the second platform for positioning the first platform and the second platform relative to each other. Each extendable leg assembly includes: (i) a first member and a second member that move relative to each other when the extendable leg assembly changes length, and (ii) a measuring member fixed to the first member for measuring the length associated with the extendable leg assembly; wherein the first member is at least partially formed of a composite material.

The present invention relates to an electromagnetic induction pump, comprising: - a tubular internal sensor including a plurality of internal combs and an internal coil positioned between the teeth of the internal combs, the interior of the internal sensor forming a cavity; - an internal tube positioned around the internal sensor; - a pumping channel allowing circulation of the fluid to be pumped; - an external tube, the channel being located between the internal tube and the external tube; - a tubular external sensor positioned around the external tube and including a plurality of external combs and an external coil positioned between the teeth of the external combs; - the electromagnetic pump further comprising a moving device for moving the internal combs and capable of changing the radial clearance between the internal combs and the internal tube, and including a first portion positioned inside the internal sensor and connected to the internal combs to enable radial movement of the internal combs, and a second portion extending at least partially outside the internal sensor and connected to the first portion in a manner that controls the first portion.

A magnetic fluid micropump includes an annular flow channel, a fixed magnetic assembly and a driving magnetic assembly. A magnetic fluid is provided inside the annular flow channel. The fixed magnetic assembly is arranged outside the annular flow channel in a stationary manner so that a part of the magnetic fluid is attracted and fixated in the annular flow channel to form a magnetic fluid valve. An inlet tube and an outlet tube that are in communication with the annular flow channel are respectively provided on both sides of the fixed magnetic assembly along a path of the annular flow channel. The driving magnetic assembly is arranged outside the annular flow channel and configured to move along the path of the annular flow channel, so that another part of the magnetic fluid moves along the annular flow channel to form a magnetic fluid piston.

A novel electromagnetic driving mechanism comprises at least one driving assembly, each driving assembly comprises a fixing base, a winding reel and a movable iron rod, the movable iron rods can be inserted into the fixing bases in a front-back moving mode, the winding reels are fixedly connected to the rear ends of the fixing bases, the rear portions of the movable iron rods are located in the winding reels, and the winding reels are fixedly connected to the rear ends of the fixing bases. The front end of the movable iron rod extends out of the front end of the fixing base, the front end of the movable iron rod is connected with a transmission assembly, and an electromagnetic coil is wound around the periphery of the winding reel and controlled by a controller. Compared with an existing electromagnetic driving mechanism, the electromagnetic driving mechanism is simpler in structure, the electromagnetic driving mechanism can be formed only through the electromagnetic coil, the movable iron rod and the transmission assembly, and meanwhile the manufacturing cost and the weight of the electromagnetic driving mechanism are reduced.

The utility model relates to the technical field of bathroom products, in particular to a water temperature digital display device for a bathroom shower head, which comprises a hydroelectric generation component arranged on the shower head, a battery, a temperature sensor, a microcontroller and a digital display component, according to the hydroelectric generation assembly, a pressurizing plate is arranged in a water inlet pipe of a shower head, a rotating coil is rotatably arranged in the water inlet pipe through a rotating shaft, the pressurizing plate is provided with a plurality of jet flow holes, the jet flow holes convert kinetic energy of water flow into pressure energy to pressurize water, and the flow speed of the water flow is increased after the water flow penetrates through the jet flow holes; therefore, the rotating coil rapidly rotates to generate electricity under the impact effect of water flow, the generating voltage of the hydroelectric generation assembly is kept stable, even if the water pressure is small and unstable, the digital display component can normally display the water temperature, and the problems that an existing digital display bathroom shower head on the market is unstable in water pressure and inconvenient to use are solved. And the digital display screen does not display the water temperature or splash screen at low brightness.

The invention relates to the technical field of nondestructive testing, and discloses a design method of a track defect monitoring system in a depopulated area. Each node comprises a composite vibration unit, a signal rectification and shunting module, an intelligent wake-up module, an energy conversion and storage module, a local signal processing module, a wireless transmission module and the like; the signal rectification and shunting module divides a vibration signal into an awakening path, a power supply path and a detection path which are respectively used for system activation, energy supply and intelligent defect analysis; and a multi-stage intelligent detection architecture combining local rapid discrimination and cloud collaborative analysis is adopted, so that accurate positioning of defects is realized. The system has the effects of self-powered maintenance-free, high environmental adaptability and simplicity and convenience in installation and maintenance, and the reliability and the economical efficiency of track monitoring in the unmanned area are remarkably improved.

A rotating machine includes a rotor. The rotor includes a reservoir provided with a coil block disposed on an outer peripheral surface of the reservoir, a rotating support portion coupled to the reservoir and including a bellows portion, a refrigerant pipe extending into an interior of the reservoir by penetrating through the rotating support portion, and a torque transmission portion coupled to the reservoir and the rotating support portion. The bellows portion is disposed inside the torque transmission portion.

This device describes a vehicle propulsion method based on an electromechanical system for intelligent energy management. It replaces the internal components of an internal combustion engine cylinder with an assembly comprising a controlled linear actuator. This actuator generates a linear force, which is converted into rotary motion by a connecting rod linked to the crankshaft, thus propelling the vehicle without combustion. Air drawn into the cylinder is used to generate electricity by means of an electromechanical converter consisting of a rotor and a stator. This electricity powers a microprocessor that regulates the controlled linear actuator. This control is performed in real time using pulse-width modulation (PWM) signals, adjusted to the driving conditions.A mobile application allows the user to manage a monetary credit linked to the mileage range and to activate an "anti-theft" mode immobilizing the vehicle.

The utility model discloses a reciprocating type magnetic suspension motor. The reciprocating type magnetic suspension motor comprises a fixing frame, a stator coil module, a first rotor and a second rotor, the first rotor is provided with a first swing part, the first swing part comprises a first lower step and a first upper step, and the first upper step is connected to the lateral upper portion of the first lower step. The second rotor is provided with a second swing part, the second swing part comprises a second lower step and a second upper step, and the second upper step is connected to the lateral upper portion of the second lower step; the first upper step and the second upper step are symmetrically arranged, the first upper step is located over the second lower step, and the second upper step is located over the first lower step. According to the embodiment of the utility model, the first upper step arranged at the upper part of the first swinging piece and the second upper step arranged at the upper part of the second swinging piece are symmetrically arranged in a staggered manner, so that the dynamic mass distribution in the motor is more balanced in the swinging process of the first swinging piece and the second swinging piece, and further the generated deflection inertia is eliminated.

The invention provides an optical anti-vibration motor and a camera module, and the motor comprises a pedestal; the support is movably connected to the base through a first guide mechanism so as to move in the first direction; the carrier is used for bearing the lens, the carrier is movably connected to the interior of the support through a second guide mechanism and can move in a plane, and the plane is perpendicular to the first direction; the elastic reset piece is connected between the carrier and the support and used for providing elastic restoring force for the carrier to enable the carrier to tend to the motion center position and limiting displacement of the carrier relative to the support in the first direction. The camera module comprises the optical anti-vibration motor.

To provide a circulation power generator capable of effectively taking out power on the output side of a generator by arranging a reduction gear between a high-speed power motor and the generator to increase the amount of power.SOLUTION: The power generation system includes a high-speed power motor 2 driven by an inverter 1, a generator 4 connected to the high-speed power motor 2 via a reduction gear 3, and a capacitor 8 for storing power obtained by the generator 4 rotating at a speed lower than that of the high-speed power motor 2, and the inverter 1 is operated according to a remaining amount preset by the capacitor 8.SELECTED DRAWING: Figure 1

To suppress torque loss while making a device compact.SOLUTION: The motor-operated valve 1 includes a cylindrical can 60, a cylindrical rotor 40 disposed outside the can 60, a valve body 20 moving in accordance with rotation of the rotor 40, and a stator 90 disposed inside the can 60, the stator 90 including a plurality of plate-shaped pole teeth 90 having a flat facing surface 92 facing an inner wall surface of the can 60, and a protrusion portion 97 partially protruding from the facing surface 92 toward the inner wall surface 60A of the can 60 from the facing surface 92 is provided in one or more of the pole teeth 90.SELECTED DRAWING: Figure 2

The invention provides a Bluetooth self-generating controller which comprises a bottom box, a rocker button type top cover buckled with the bottom box and a self-generating Bluetooth control module, the self-generating Bluetooth control module comprises a mechanical connecting rod type driving part, a magnetic induction coil assembly and a control panel, the magnetic induction coil assembly is electrically connected with the control panel, and a plurality of channel switches are arranged on the control panel; when the end part of the rocker button type top cover is pressed, the driving piece is driven to cause the magnetic flux change of the magnetic induction coil assembly to generate current, meanwhile, the channel switch is driven to be closed, and the control panel encodes the information of the channel switch in the Bluetooth broadcast packet to be transmitted. According to the Bluetooth self-generating controller provided by the invention, mechanical energy is converted into electric energy to realize self-powered driving of Bluetooth control signal emission, dependence on a traditional battery and wired power supply is eliminated, and environmental protection is facilitated.

A power generation system comprising a shaft configured to rotate in one direction about a horizontal axis, an inertial body coupled to the shaft with a non-uniform distribution of mass around the shaft, a generator configured to extract rotational kinetic energy from the shaft, and an electric motor configured to supply recovery energy to the shaft. A power generation method includes the steps of providing the power generation system, positioning the shaft in an initial position, and inducing shaft rotation. Once shaft rotation is induced, the method alternately repeats the steps of power generation and power consumption. Since more power is generated than is consumed, a surplus power is supplied to the power grid.

The application discloses a propelling system and an aircraft, wherein the propelling system comprises a power generation system and a distributed system; the power generation system comprises a pre-ionization device and a magnetic fluid power generation device; the pre-ionization device can ionize gas to generate ionized gas; the magnetic fluid power generation device is suitable for the ionized gas to pass through; the distributed system comprises a plurality of propellers; any one of the propellers is electrically connected with the magnetic fluid power generation device. The magnetic fluid power generation device is used to replace an internal combustion engine to drive a generator to generate power; when the ionized gas passes through the magnetic fluid power generation device, the magnetic fluid power generation device can directly generate electric energy, so that the electric energy can be generated without mechanical conversion, the energy conversion efficiency is improved, and the electric energy is easy to transmit, that is, the energy transmission efficiency is also improved.

Inhaler for administering a pharmaceutical with a) a reservoir (1) for storing the pharmaceutical, wherein the reservoir (1) has a dispensing opening (2), b) a triggering device (3) for triggering an application of a pharmaceutical product, wherein the pharmaceutical product is dispensed through the dispensing opening (2), c) an information storage medium (4) for storing application data, d) a conversion device (5) for converting analog application data into digital application data, e) a wireless information transmission device (6) for transmitting the application data to an external display and / or storage medium and f) a power generation unit (7) for providing electrical energy to the conversion unit (5), the information storage medium (4) and the information transmission unit (6) characterized by the fact that the energy generation device (7) is designed as an inductive element, or as a vibrationally excited element (13) in an outlet opening of the inhaler (3), which is excited to vibrate by the outflowing pharmaceutical, wherein the inductive element comprises a coil (9) arranged on the reservoir (1) and magnets (8) arranged on a base body and cooperating with the coil (9) and a movement of the reservoir (1) both induces an electronic current and opens the path for the pharmaceutical through the dispensing opening (2). will and that during the application, the required electrical energy can be generated and provided by the energy generation device (7) instead of a long-term energy storage device.

This invention provides a vibration power generation amplifier that increases vibration energy and improves power generation efficiency. [Solution] The vibration power generation and amplification device of this invention is a double-layered spherical structure comprising an outer external structure and an inner internal structure, the outer and internal structures being supported and connected by the force of multiple springs, and capable of converting vibrational force into energy and amplifying power with springs. The structure of this invention is capable of floating on water.

The invention provides a driving motor, a camera module and an electronic device, the driving motor comprises a fixed part, a moving part and a supporting assembly, the fixed part comprises a base and a shell covering the base, the moving part is used for bearing an optical lens and is movably installed on the base, the shell covers the periphery of the moving part, and the supporting assembly is used for supporting the optical lens. The supporting assembly comprises a shaft component and a first motion conversion piece, the shaft component is installed on the base, and the first motion conversion piece is movably arranged on the shaft component in a sleeving mode and connected with the moving part so that the moving part can move in the first linear direction relative to the shaft component through the first motion conversion piece; when the moving part is driven to move in the plane perpendicular to the first linear direction, the moving part can drive the shaft component to move in the plane relative to the fixed part, the first linear direction is parallel to the optical axis direction of the optical lens, the number of driving motor components is remarkably reduced, the material cost is reduced, the assembly process is simplified, and the product yield is improved.