682 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 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.

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 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.

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.

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.

The invention provides a bidirectional bootstrap power supply circuit and method and a power switch device driven by self power supply. The circuit comprises a bidirectional power taking module, a first energy storage module and a second energy storage module. The bidirectional power taking module is connected between the first power supply end and the second power supply end; the first energy storage module and the second energy storage module respectively comprise a switching tube and an energy storage capacitor, the switching tube is connected between the bidirectional power taking module and the first end of the energy storage capacitor, the first end of the energy storage capacitor is connected with a power supply output end, the second end is connected with a power supply end, and the power supply output end supplies power to driving signals of the bidirectional switching power device; when a potential difference exists between the two power supply ends, the circuit takes power from the high-voltage end through the bidirectional power taking module, charges the corresponding energy storage capacitor by using the switch tube or the body diode thereof, and establishes a driving power supply voltage; when the power device is conducted and the potentials at the two ends are close, the electric energy is bidirectionally transferred between the two energy storage capacitors. An external isolation power supply can be omitted, the power supply architecture of the bidirectional power device is simplified, and the cost is reduced.

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 invention discloses a piezoelectric driving micro-nano scratching instrument, and belongs to the technical field of material mechanical property detection. The scratch tester comprises a piezoelectric driving system, a multi-mode detection system and a control and data processing system. The core is that the piezoelectric driving system is completely driven by piezoelectric elements, and a displacement table adopts a clamping type stepping mechanism based on a flexible hinge, so that the combination of nanoscale motion precision and large stroke is realized; the multi-mode detection system innovatively integrates an electrical impedance detection loop composed of a conductive pressure head and a sample, can sensitively capture microscopic damage and failure behaviors of a material in the scratching process, and carries out synchronous fusion analysis with signals of a force sensor and a displacement sensor. According to the invention, the defects of insufficient precision and single detection means of the traditional scratch tester are overcome, and the accuracy and reliability of detecting the interface bonding strength and other mechanical properties of materials such as films and coatings are remarkably improved.

The invention relates to a double-container heat storage type water heater circuit and a control method, and the circuit comprises the double-container heat storage type water heater circuit. The circuit comprises a power supply input module, a switch control module, a double-container switching module and a control module, wherein the switch control module comprises a first relay driving unit and a conduction buffer unit which form a parallel network, and a first end of the parallel network is connected with a power supply output end of the power supply input module; the second end of the parallel network is connected with the common end of the double-container switching module, the controlled end of the first relay driving unit is connected with the first signal output end of the control module, and the controlled end of the conduction buffer unit is connected with the second signal output end of the control module; when the first relay driving unit starts to switch the conducting state, the conducting buffer unit is controlled to conduct firstly, and then the first relay driving unit is controlled to switch the conducting state, so that the current transfer is smooth and no arc interference exists in the relay switching process, the switching reliability is improved, and the service life of the relay is prolonged.

According to the inductance adjusting system of the ultrasonic generator frequency self-adaption system, a main execution component is an inductor, and the inductor comprises a magnetic core coil. The magnetic core coil is provided with a group of coil leading-out eight taps and two magnetic cores which are at least partially inserted into the magnetic core coil in advance, the two magnetic cores are symmetrically arranged, a first substrate and an adjusting plate are respectively fixed on the two magnetic cores, a second substrate is arranged beside the adjusting plate, and the first substrate and the second substrate are fixed on the adjusting plate. An electric adjuster for driving the magnetic core on the adjusting plate to move is mounted on the second substrate, and a driving part of the electric adjuster is connected with the adjusting plate. On one hand, a rotating motor is electrified to drive a rotating screw rod to rotate, so that the rotating screw rod is matched with a threaded hole to enable a magnetic core on an adjusting plate to perform lifting displacement, and then a gap between a pair of magnetic cores is adjusted, or a motor of an electric linear push rod or a linear motor is electrified to drive the magnetic core on the adjusting plate to perform lifting displacement; therefore, the gap between the pair of magnetic cores is adjusted, and the inductance value of the inductor is adjusted. On the other hand, the single-chip microcomputer minimum system module switches eight groups of taps of the magnetic core coil through the coil tap gating module, and inductance value adjustment of the inductor is achieved by changing the number of turns of the inductance coil.

The invention discloses a novel compression-injection-absorption thermal coupling type refrigerating system and device, a solution loop between a generator and an absorber is driven by high-temperature waste heat of an outlet of a compressor, and a low-pressure-stage compression function is realized through a solution pump. A compressor is a key component in an electrically-driven compression refrigeration cycle, a two-stage compression refrigeration system is generally adopted in a refrigeration cycle with a lower evaporation temperature in order to reduce the evaporation pressure of a refrigerant and improve the cooling capacity grade, but in the refrigeration cycle, the negative pressure degree of a low-pressure stage is higher, so that the safe and economical operation of the two-stage compression refrigeration system is not facilitated. According to the system and the device, a compression type refrigeration cycle and an absorption type refrigeration cycle are coupled in a cascade serial connection mode through the ejector, and a novel compression-ejection-absorption thermal coupling type refrigeration cycle is constructed; and low-voltage-stage power consumption can be reduced, the operation reliability of low-voltage-stage equipment can be improved, and wide popularization and application prospects are achieved.

A measuring system includes a vibration-type transducer and electrically coupled measuring system electronics unit for controlling the transducer and evaluating vibration measurement signals provided by the transducer. The exciter arrangement has a vibration exciter which is positioned and aligned such that a drive offset is no more than 0.5% of the tube length. The measuring system electronics are configured to supply electrical power to the vibration exciter by means of an electrical drive signal having a temporally variable electrical current and to provide the drive signal at least intermittently with a sinusoidal second useful current having a second AC frequency, in order to monitor a quality of the measured substance based upon a corresponding second useful signal component of at least one of the vibration measurement signals.

The invention belongs to the technical field of piezoelectric driving, and relates to a piezoelectric driver, a working method thereof and a driving mechanism. The piezoelectric actuator is mainly composed of a driving body, a driving foot, a pre-tightening force mechanism and a bolt. The driving body generates a non-resonance induction mode and brings first direction displacement and second direction displacement to be generated near a resonance mode under the excitation of a plurality of paths of driving electric signals due to the synergistic strain effect of a plurality of piezoelectric bodies, and the tail end of the driving foot forms an elliptical motion track through the synergistic effect of the displacements in two orthogonal directions. The driving mechanism comprises a piezoelectric actuator, a sliding block, a carrying platform and a fixing mechanism, the piezoelectric actuator is fixed to the sliding block and moves together with the sliding block during driving, a fixed piezoelectric actuator in a traditional scheme is converted into a moving part, and the advantages of being long in stroke and large in thrust are achieved. According to the invention, the beneficial effects of wide frequency band, large output and high-precision driving can be achieved, and miniaturization of a driving system is facilitated.

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 invention relates to a radar antenna device (1) for a vehicle (20), comprising a composite window pane (2) and at least one radar device (13) configured to transmit and / or receive a radar beam (6). The at least one radar device (13) comprises a corresponding antenna unit (5) and a corresponding amplifier unit (12). The amplifier unit (12) is configured to provide an electrical drive signal (8) to the antenna unit (5) and / or to receive an electrical echo signal (9) from the antenna unit (5). The invention provides that the antenna unit (5) is arranged in the composite window pane (2) of the vehicle (20), the amplifier unit (12) is arranged on a surface of the composite window pane (2), and the antenna unit (5) and the amplifier unit (12) are spatially separated from each other and are electrically conductively connected to each other via a connecting element (11) arranged in the composite window pane.

The present invention discloses a button-activated wake-up power-taking drive circuit and an electric-controlled toilet, comprising: a logic judgment module, comprising a detection end and an output end, the detection end of the logic judgment module being used to connect to an external main power supply and an external button component respectively; a switch module, comprising a backup power supply end, a control end and an output end, the backup power supply end of the switch module being used to connect to an external backup power supply, the output end of the switch module being used to connect to an external load and / or an external controller, and the output end of the logic judgment module being connected to the control end of the switch module; the logic judgment module being able to control the switch module to close when the main power supply is cut off and the button component is actuated, and this design saves auxiliary power supply power consumption and extends battery life.

The present application belongs to the technical field of shock insulation support, and particularly relates to a composite thick laminated rubber shock insulation support with self-adaptive damping and a shock insulation method thereof.The technical scheme is as follows: a composite thick laminated rubber shock insulation support with self-adaptive damping, comprising an upper connecting steel plate and a lower connecting steel plate, a steel plate layer, a rubber layer, a pressure sensing layer and a sensor network layer are arranged between the upper connecting steel plate and the lower connecting steel plate, a plurality of fluid cavities are arranged in the rubber layer and are communicated through pipelines; the pressure sensing layer is provided with an electromagnetic coil, a piezoelectric driving unit and a valve body, the valve body is connected with the fluid cavities through a conduit, the electromagnetic coil is sleeved on the valve body, and the electromagnetic coil and the valve body are electrically connected with the piezoelectric driving unit respectively.The present application provides a composite thick laminated rubber shock insulation support with self-adaptive damping and a shock insulation method thereof, which has the functions of intelligent sensing and self-adaptive adjustment and can maintain long-term stable performance.

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.

The utility model relates to the technical field of dual-power-supply automatic change-over switches, and discloses a low-cost PC-level dual-power-supply automatic change-over switch. Comprising a switch shell, the inner walls of the upper side and the lower side of the switch shell are each provided with a plurality of interfaces, the inner wall of the switch shell is slidably provided with a plurality of wiring terminals, the top ends of the wiring terminals make contact with the interfaces above, and the bottoms of the wiring terminals are electrically connected with wires. After the circuit provided by the utility model is powered off, the first lead cannot energize and magnetize the electromagnet, so that the electromagnet loses magnetism and cannot push the magnetic ring to lift, the magnetic ring descends to drive the switching block to be pressed on the upper surface of the switching seat, and the controller can drive the electric push rod to be energized through the switching seat, the switching block and the second lead. The driving piston rod moves to push the push block to move downwards to drive the transmission rod to pull the wiring end to move and be switched to an interface connected with a standby power supply, and automatic switching of the power supply can be ensured.

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.

Embodiments of the present application provide a charging drive circuit and battery system. The charging drive circuit is integrated into a battery protection chip and includes: a battery detection module configured to output a charging overvoltage protection control signal, wherein the high-level voltage of the charging overvoltage protection control signal is a first power supply voltage; a level conversion module that receives the charging overvoltage protection control signal and performs level conversion on the charging overvoltage protection control signal to obtain a charging overvoltage protection drive signal, wherein the low-level voltage of the charging overvoltage protection drive signal is a second power supply voltage, which is higher than the first power supply voltage; and a charging overvoltage protection pin that outputs the charging overvoltage protection drive signal to the control terminal of a charging switch to control the conduction and cutoff of the charging switch. This application eliminates the need for a pull-up resistor connected in series between the battery protection chip and the charging control port, thereby reducing system power consumption.

The invention relates to a bidirectional knitting density control device based on electric control and a glove machine, the density knitting control device comprises a first electric driving mechanism, the output end of the first electric driving mechanism is connected with a first ejector rod and a third ejector rod, and the first ejector rod and the third ejector rod are arranged in parallel; the first ejector rod is driven by the first electric driving mechanism to have at least one density adjusting range so as to control the positions of the left density triangle and the right density triangle, and therefore bidirectional knitting full density adjustment can be carried out. The third ejector rod is driven by the first electric driving mechanism to have at least one driving range so as to drive the middle triangle to be switched between the full high position and the half high position. Under the driving of the first electric driving mechanism, the first ejector rod and the third ejector rod have multiple position matching modes. According to the glove machine, the left-right bidirectional full density can be electrically adjusted, the time required for density adjustment is greatly shortened, the adjustment precision is improved, and the glove machine has multiple knitting modes.

The invention relates to the technical field of agricultural equipment new energy driving, in particular to a rice transplanter electronic accelerator pedal signal filtering method, which comprises the following steps in each work cycle: S1, accelerator pedal signal acquisition and processing; s2, state prediction and variance prediction are carried out; s3, state updating and variance updating are carried out; and S4, outputting a filtering result. According to the method, an accelerator pedal signal is filtered by adopting a self-adaptive maximum correlation entropy Kalman filtering algorithm based on a student t kernel, and the algorithm comprises an innovative kernel bandwidth self-adaptive adjustment method of maximum correlation entropy Kalman filtering based on the student t kernel. Compared with a traditional filtering algorithm, the method has higher robustness on paddy field non-Gaussian noise, the robustness estimation capacity of the system on the opening degree of the accelerator pedal is effectively enhanced, and the control stability and precision of the electric drive system in the complex paddy field environment are improved.