421 results about "Electrical drive" patented technology

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.

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.

Aircraft capable of hovering comprising a fuselage at least one rotor that is rotatable with respect to the fuselage, electrical drive means adapted to rotate the rotor and electrically powered by a battery, and a cooling system of the battery. Said cooling system comprises, in turn, a first opening for the air to enter, second openings for the air to escape and a passage which places the first opening in fluidic communication with the second openings and within which the battery is placed. The cooling system further comprises a fan adapted to increase the kinetic energy of the air contained in the passage and which is operated when the forward speed of the aircraft with respect to the ground is lower than a speed threshold value and / or when the temperature of the battery exceeds a temperature threshold value.

The invention discloses a variable-rigidity flexible space debris capturing device based on a woven structure. The variable-rigidity flexible space debris capturing device comprises a capturing assembly, a connecting assembly, a driving device, a power supply module and a control assembly. The capturing assembly comprises a plurality of flexible woven belts; the connecting assembly comprises an upper fixator and a lower fixator, and the two ends of the flexible woven belt are fixedly connected with the upper fixator and the lower fixator respectively; a shape memory alloy wire is fixedly arranged on the flexible woven belt, and the power supply module is at least used for electrifying the shape memory alloy wire; the driving device is used for driving the upper fixer to rotate so as to drive the plurality of flexible woven belts to be folded or unfolded; when the plurality of flexible woven belts are folded and / or unfolded, the plurality of flexible woven belts realize mutual support through position difference; according to the variable-rigidity flexible space debris capturing device based on the woven structure, the woven structure formed by interweaving the flexible strips is utilized, the flexibility and adaptability of the woven structure are brought into play, and self-adaptive conformal capturing of space debris of different shapes is achieved.

Photovoltaic electric control shutter hollow glass externally connected with a control box comprises a window body, a shutter blind, an electric driving device, a photovoltaic assembly and a receiver, the shutter blind is arranged in the window body, the electric driving device is arranged in an upper frame of the window body and used for driving the shutter blind to complete lifting and overturning, and the electric driving device is electrically connected with the wireless receiver; the receiver comprises a bottom box, a box cover and a main control circuit board, the main control circuit board is provided with a microprocessor, a power management unit, a photovoltaic charging management unit, a motor driving unit, a wireless signal receiving and processing unit, a key unit and an indicator light unit, and the photovoltaic charging management unit is electrically connected with the photovoltaic module; the wireless receiving device is installed in the upper frame of the hollow glass, the control key box which is externally connected and installed in a lower mode is adopted, the appearance of the hollow shutter glass can be neat, the key control box can be disassembled and assembled according to needs to be debugged and operated, the set height of the control key box better conforms to the using habit of a user, and operation is more convenient.

The present disclosure relates to chiral materials and films comprising metal- coordinated organic complexes. Specifically, the invention provides compositions, derivative structures, and methods for the preparation of such materials in solution, as coatings, and in other forms. These films exhibit chiral properties allowing for tunable chiral-electrochromic capabilities for optoelectronic devices, and display technologies.

An electrically driven construction machine that can suppress damage to a feeding cable is provided. An electrically driven excavator includes a swing angle sensor that senses the swing angle of a swing structure, a cable stand that is disposed on the swing structure and has a holding unit that holds a feeding cable, a rotational angle sensor that senses the rotational angle of the holding unit of the cable stand, a swing lock valve, and a controller. The controller computes the position of the holding unit of the cable stand on the basis of sensing results of the swing angle sensor and the rotational angle sensor when a connection sensor senses a state in which the feeding cable is connected to a feeding port. Further, the controller controls the swing lock valve to an interrupting state to inhibit a swing of the swing structure when the computed position of the holding unit goes outside a predetermined range.

The utility model discloses a silicon carbide drive circuit with miller clamping function relates to semiconductor drive circuit technical field, the utility model discloses a power module, drive module, control module and power module, power module is used for converting external 24V power supply into 5V voltage and isolated 15V voltage, and the power supply is powered for drive chip input end and output drive end, drive module is used for the differential signal processing amplification MCU sends to the drive voltage of SIC MOS, the utility model discloses circuit can when the current passes through miller capacitor voltage not through drive resistance directly connects ground, makes the current quick release to the voltage reduction below Vth prevents the false opening, in addition, this circuit can also detect the overcurrent condition of SIC MOS, when the current exceeds the set value, closes drive output, and simultaneously possesses chip and drive voltage detection function, when voltage is unstable, sends signal to MCU and closes drive output.

The drivetrain system disclosed uses a controlled slip between an electric motor and one or more driven wheels to unify propulsion and regenerative braking. A planetary gearset (or similar two degrees-of-freedom gearing) connects the motor to the wheel, with a friction brake applied to one gear element to modulate torque. The motor is actively regulated to maintain a small constant speed offset (slip) relative to the wheel's rotation. This slip allows the motor to either drive or brake the wheel depending on its direction, with the transmitted torque being inherently proportional to the applied force on the friction brake. In multi-wheel configurations, a single motor drives multiple wheels via respective gearsets, inherently apportioning torque between wheels like a limited-slip differential without separate differential hardware. The result is a highly efficient, bidirectional drive and braking system that recovers energy, eliminates coasting drag, and uses existing brake components for torque control.

1. Name of the product in this design: Electric drive unit for a coffee grinder. 2. Purpose of this design: To be used in conjunction with the shaft of a hand-cranked coffee grinder for electric grinding. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

An input signal may be converted to a first PWM signal and a second PWM signal at a PWM controller circuit. The first PWM signal and the second signal output may drive a driver circuit. The driver circuit may receive a high voltage power supply from a boost converter or other power supply circuit. The driver circuit may include a high side device and a low side device. The output of the driver circuit may drive a filter circuit that includes a filter capacitor, an inductor, and a haptic actuator. The haptic actuator may generate a desired haptic response at the haptic actuator.

The invention provides a piezoelectric excitation out-of-phase vibration micro electric field sensitive structure, a sensor and a detection method. The sensor comprises the piezoelectric excitation out-of-phase vibration micro electric field sensitive structure, a substrate (6), an elastic beam (7), a piezoelectric driving unit (1) and a piezoelectric feedback unit (4), the piezoelectric excitation out-of-phase vibration micro electric field sensitive structure comprises an out-of-phase vibration unit (2) and a differential sensing unit (3). Induction electrodes of the differential induction units (3) are arranged on the substrate (6); the elastic beam (7) is connected with the substrate (6) and the out-phase vibration unit (2); the piezoelectric feedback unit (4) and the piezoelectric driving unit (1) at least comprise a piezoelectric material layer and two electrode layers, one end of the piezoelectric feedback unit (4) is fixed on the substrate (6), and the other end of the piezoelectric feedback unit (4) is connected with the elastic beam (7). According to the invention, differential detection can be realized, and crosstalk and environment common-mode noise in an alternating-current excitation signal can be effectively suppressed.

The present disclosure provides a head optical application device, a transcranial light regulation apparatus and a near-infrared apparatus. The head optical application device comprises a support component, an optical component, and deployable components. The support component is constructed to mount an optical component. The optical component is constructed to transmit light to or receive light from scalp. The deployable components are provided on the support component, and are constructed to deploy or gather the distal ends under the action of force caused by the surrounding environment. Without the need for providing an electrical driving apparatus, the distal ends of the deployable components can be inserted into the user's hair gap in a gathered state, and distal ends of the deployable components can part (push) the hair blocking light (aside) in a deployed state after insertion, improving the problem of low light propagation rate due to hair blocking.

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.

Valve assembly with a valve housing (20) through which a fluid channel (21) is penetrated, in which a valve seat (24) and a valve element (22) which is movably mounted relative to the valve seat (24) are formed, with an electromechanical actuating means (23) for moving the valve element (22) between at least two functional positions to influence a free cross-section of the fluid channel (21) and with a control device (44; 54) which is configured to actuate the actuating means (23) depending on a control signal and which includes a delay means (45; 55) which, in the event of a valve shut-off process, is configured for a time-delayed movement of the valve element (22) into a shut-off position, wherein the control device (44; 54) and the delay means (45;55) are designed as electrical circuits and comprise an electrical energy storage device (47, 57) which is designed for energy-autonomous movement of the valve element (22) into the shut-off position during the valve shut-off process and wherein the control device (44; 54) is designed to provide a start signal to the delay means (45; 55) in the absence of a control signal and / or in the event of a supply voltage being switched off in order to initiate the valve shut-off process.;

The application discloses a design method and device of a force-position switching controller of a piezoelectric-driven cell microinjector and an injection method thereof, and comprises the following steps: S1: based on the deformation and viscoelasticity of cells, a mass-spring-damper system is used to establish a dynamic model for describing a system formed by the microinjector and the cells; S2: based on the dynamic model, an adaptive integral terminal sliding mode impedance force controller is designed; S3: based on a feedforward compensator and a feedback control law, a composite PID position controller is designed; S4: a switching function is designed; and S5: the switching control law of the final force-position switching controller is calculated by combining the adaptive integral terminal sliding mode impedance force controller, the PID position controller and the switching function. The force-position switching controller can provide accurate force and position tracking performance in each control mode, and still has small chattering and cell damage degree when different modes are switched multiple times.

A power machine (300, 400) may include a frame (310, 410), a lift arm (330, 430), and one or more electrical devices for controlling one or more working elements. An electrical tilt actuator (333, 433) may be secured to the lift arm (330, 430) to change the attitude of the implement carrier (372, 472), an electrical lift actuator (338, 438) may be secured to the frame (310, 410) to raise and lower the lift arm (334, 434), an electrical drive motor (326) may be mounted to the track frame (343) to move the track, or a battery assembly (322, 418) and an electrical control module (360, 420) may be secured to the frame (310, 410), including behind the operator station (455).

The utility model discloses a kind of folding lamps, including the main light module of long edge setting pivot, two sub-lamp modules being rotatedly connected with main light module by pivot, main light module and sub-lamp module internal assembly lamps and lanterns;Main light module internal assembly drive panel, drive panel connects power cable with the lamps and lanterns inside main light module;The side surface of main light module is provided with power transmission hole, and power transmission touch plate electrically connected to drive panel is arranged in power transmission hole;Sub-module side surface is provided with the power receiving foot connected with the lamps and lanterns inside it, and the power receiving foot is inserted into power transmission hole and contacts power transmission touch plate;Drive panel supplies power to main light module, and drive panel supplies power to sub-lamp module through power receiving foot and power transmission touch plate. Thus, through simple and convenient turning operation, sub-lamp module can be triggered to illuminate, obtain diversified lamp effect, realize flexible dimming, without needing to lay special drive control circuit, without needing to additionally add other lamps and lanterns, with low failure rate, hardware cost is effectively controlled, applicable to diversified scene.

Provided is a micromechanical electrical signal amplifier, which can be applied to the field of microelectronics. The structure of the amplifier comprises: an electro-mechanical conversion structure for generating an electrostatic driving displacement; a mechanical resonance structure for generating an amplified electrical signal in response to the amplified electrostatic driving displacement; and a mechanical-electric conversion structure for outputting the amplified electrical signal, wherein the mechanical resonance structure comprises a first surface and a second surface arranged oppositely; the electro-mechanical conversion structure is connected to the first surface of the mechanical resonance structure; and the mechanical-electric conversion structure is connected to the second surface of the mechanical resonance structure. The elastic beam group in the mechanical resonance structure adopts a piezoresistive material, and the self-amplification effect of the mechanical resonance structure is used to amplify the electrostatic force response displacement and further amplify the electrical signal.

The invention discloses an input overvoltage protection circuit and a protection method thereof, and relates to the technical field of overvoltage protection, the input end of an overvoltage detection module is coupled to the output voltage of a power adapter, and the overvoltage detection module is configured to output a trigger signal when the output voltage exceeds a preset threshold; the input end of the switch driving module is coupled to the output end of the overvoltage detection module, and the switch driving module is configured to be switched on in response to a trigger signal; the protection execution module comprises a relay, a coil of the relay is controlled by the output end of the switch driving module, and a normally open contact of the relay is connected to the two output ends of the power adapter in parallel. When the switch driving module is switched on, the coil of the relay is powered on, the normally open contact is driven to be closed, and the output of the power adapter is short-circuited. The technical problem that in the prior art, the input overvoltage point is a fixed value and cannot meet the requirements of various devices is solved, and the technical effects of adapting to the overvoltage protection requirements of various devices and preventing the devices from being damaged due to overvoltage are achieved.

The invention provides a single-phase alternating-current permanent magnet brushless motor which is different from a common single-phase alternating-current motor, a motor stator of the single-phase alternating-current permanent magnet brushless motor is formed by stacking silicon steel sheets with barrel-shaped interiors and armature slots and armature teeth for winding, and a cylindrical rotor is provided with permanent magnets with magnetic lines perpendicular to a motor rotating shaft in the radial direction. Magnetic lines generated by the stator and the rotor are perpendicular to a motor shaft, stator coils are concentrically wound in a distributed mode, the stator coils can be directly used on a single-phase alternating current power supply without a driver, and the speed can be adjusted through a frequency converter. Compared with a traditional single-phase alternating current motor, the motor power and torque are improved under the condition of the same specification, all south and north poles of the magnetic rotor containing the permanent magnets are driven during driving each time, and high electric energy driving efficiency and high power density are achieved. And energy conservation and emission reduction are achieved in daily industrial power application, and wide application prospects are achieved.

The invention discloses a low-voltage power supply high-voltage charge pump switching circuit and a control method. The circuit comprises an NMOS transistor N3 serving as a switching tube, a single charge pump capacitor C, a charging branch and a switch driving module. The charging branch is connected between a power supply and the ground and is used for charging the capacitor; the switch driving module is coupled among the capacitor, the input node and the grid electrode of the switch tube and is used for driving the switch tube. The two modules are alternately controlled through a pair of anti-phase non-overlapping clock signals S1 and S2, a capacitor is charged in a charging stage, one end of the capacitor is connected with an input signal in a driving stage, and a high-voltage driving signal is generated at a grid electrode of a switching tube by using stored voltage so as to conduct the switching tube. According to the scheme, only one capacitor is used, the circuit structure is simple, no quiescent current exists in the switching-off stage of the switching tube, rapid and stable work of the charge pump switch under the megahertz high frequency is achieved, and meanwhile the chip area is remarkably saved.

Provided is a new ventilator that can be used for pulmonary resuscitation without requiring an electrical driving source. A ventilator includes a housing. The housing has an input port through which a gas is introduced into the housing, a main port through which the gas that is to be sent to and inhaled by a patient and a gas that is exhaled by the patient pass, an exhaust port through which the gas inhaled or the gas exhaled is exhausted from the housing, a ventilation path connecting the input port and the main port to each other, and a relief valve that is opened by receiving a pressure from the ventilation path and that allows communication between the ventilation path and the exhaust port so as to release the pressure.

This application discloses a single droplet generation device based on piezoelectric ceramics, including a microcavity liquid chamber, a piezoelectric driving component, a micro-orifice nozzle, a hydraulic adjustment system, and an electronically controlled driving module. The microcavity liquid chamber has a nozzle interface at its bottom, and its internal cavity volume is adapted to store a small amount of liquid and transmit pressure. The piezoelectric driving component includes a piezoelectric ceramic element, which is connected to the microcavity liquid chamber by bonding and is used to generate deformation under the drive of an electrical signal to apply pulse pressure to the liquid in the liquid chamber. The micro-orifice nozzle is detachably connected to the bottom of the liquid chamber, and its nozzle diameter is adjustable to control the initial size of the droplet. The electronically controlled driving module includes a power supply, a driving circuit, and a controller, which outputs an adjustable electrical signal to coordinately control the voltage amplitude, pulse width, and trigger frequency of the piezoelectric driving component, and is linked with the hydraulic adjustment system to achieve multi-parameter control of the droplet size. This application achieves high-precision droplet control through the coordination of the piezoelectric driving component and the electronically controlled module.

This invention relates to the field of flow battery technology and discloses a method and system for regulating self-excited oscillation in flow batteries. By integrating a flow oscillation generator into the electrolyte circulation loop of the flow battery, the periodic vortex ring oscillation and acoustic-fluid positive feedback phenomenon generated by the flow within the resonant cavity of this device are utilized to achieve pulsating regulation of electrolyte flow rate and pressure. This fundamentally improves the convective mass transfer efficiency at the electrode / electrolyte / diaphragm interface within the flow battery stack, thereby alleviating concentration polarization at the battery reaction interface caused by factors such as uneven flow rate, thickened diffusion boundary layer, and restricted ion migration. Furthermore, this device eliminates the need for long-term, additional electrical drive and complex control components, exhibiting a simple structure and stable operation.

The utility model discloses a dynamic down waterproof performance display device which comprises an upper box body, a display cylinder and a lower box body, the display cylinder is fixed between the upper box body and the lower box body, the display cylinder comprises a display cylinder inner box, a fixing frame, at least two display containers, a clamp and a control device, the display cylinder inner box is arranged on the back face of the fixing frame, and the display containers are arranged in the display cylinder inner box. The control device is arranged in the display cylinder inner box, the display container is clamped by a clamp, the control device comprises a worm gear reducer, a controller and a stepping motor, and the controller is used for controlling the stepping motor; the worm gear reducer is driven by the stepping motor to rotate the clamp, so that the display container rotates or swings, the down feather in the container is further mixed with water, full contact between the down feather and the water is simulated, and the waterproof performance of the down feather is displayed. The utility model provides an electrically-driven display device which is convenient to use and obvious in display effect so as to improve the waterproof performance display effect of down feather and is convenient to operate and use.

The invention relates to a current converter (IV), having:a plurality of functional base modules (FB), which each form a sub-half-bridge with a positive-voltage-side semiconductor switch (T1) and a negative-voltage-side semiconductor switch (T2) and which each have a plurality of external current terminals (H+, H−, P);a number of power base modules (LB2, LB3), which each have a plurality of the functional base modules (FB) and an enclosure unit (MM), wherein the enclosure unit (MM) of the respective power base modules (LB2, LB3) mechanically connects together the respective corresponding functional base modules (FB) and encloses them apart from their respective current terminals (H+, H−, P), wherein the functional base modules (FB) of the respective power base modules (LB2, LB3) are electrically insulated from one another within the respective corresponding enclosure unit (MM);a current converter power module (LM), which has the power base modules (LB2, LB3) and a plurality of current connections (GV, PV), wherein the current connections (GV, PV) electrically connect together the respective corresponding current terminals (H+, H−, P) of the respective functional base modules (FB) of the respective power base modules (LB2, LB3).The invention also relates to an electric drive device having a said current converter, and to a method for manufacturing a current converter.

A power machine can include a frame, a lift arm, and one or more electrical devices for control of one or more work elements. An electrical tilt actuator can be secured to the lift arm to change an attitude of an implement carrier, an electrical lift actuator can be secured to the frame to raise and lower a lift arm, an electrical drive motor can be mounted to a track frame to move a track, or a battery assembly and electrical control module can be secured to the frame, including rearward of an operator station.

The invention relates to the technical field of energy storage, and particularly provides electric heat exchange equipment and a control method thereof. The heat conduction cylinder is sequentially provided with a feeding port, a material cavity and a discharging port in the axial direction of the heat conduction cylinder. The feeding port and the discharging port are both communicated with the material cavity, the feeding port is configured to input a solid material with a first temperature into the material cavity from the outside, the discharging port is configured to output a solid material with a second temperature from the inside of the material cavity to the outside, and the first temperature is lower than the second temperature; a spiral component is arranged on the inner cavity wall of the material cavity; the electric heating piece is sleeved outside the heat conduction cylinder; the electric heating piece is configured to emit heat when being electrified to heat the solid material in the material cavity from a first temperature to a second temperature; the driving end of the electric driving piece is in transmission connection with the heat conduction cylinder; the electric driving part is configured to drive the heat conduction barrel to rotate when powered on, so that the spiral part drives the solid material in the material cavity to move in the axial direction of the heat conduction barrel. According to the electric heat exchange equipment and the control method thereof, efficient heating can be achieved.

The invention discloses a design method and device of a force-position switching controller of a piezoelectrically-driven cell microinjector and an injection method of the piezoelectrically-driven cell microinjector, and the design method comprises the following steps: S1, based on deformation and viscoelasticity of cells, establishing a dynamic model for describing a system formed by the microinjector and the cells by adopting a mass-spring-damper system; s2, designing a self-adaptive integral terminal sliding mode impedance force controller based on the dynamic model; s3, designing a composite PID position controller based on the feedforward compensator and the feedback control law; s4, designing a switching function; and S5, in combination with the adaptive integral terminal sliding mode impedance force controller, the PID position controller and the switching function, calculating to obtain a final switching control rule of the force-position switching controller. The force-position switching controller provided by the invention can provide accurate force and position tracking performance in each control mode, and still has small buffeting and cell damage degree when different modes are switched for multiple times.