63results about How to "Increase instantaneous power" patented technology

A system and method for controlling a plurality of accessories associated with a multiple cylinder internal combustion engine having the accessories coupled to an engine crankshaft by an electromagnetic coupling device with a flowable magnetic material disposed between a driving member and a driven member include selectively supplying power to the electromagnetic coupling device in response to at least one operating condition to simultaneously engage or disengage the plurality of engine accessories. Embodiments include a magnetic particle clutch or magnetorheological fluid clutch connected to an engine crankshaft and a plurality of engine accessories that may include an air conditioning compressor, water pump, power steering pump, alternator, and/or supercharger, for example.

The invention belongs to the technical field of drive control over hybrid power vehicles, and particularly relates to a power control method based on a hybrid power source for hybrid power. According to the technical scheme, when a vehicle accelerates urgently, the high instantaneous power is provided according to the advantage that the specific power of a supercapacitor is high, the response characteristic of the hybrid power source can be improved, the magnitude of discharging currents of a battery can be reduced, and damage to the battery is reduced; when the deceleration of the vehicle is high, and the high braking power is needed, most of braking energy is absorbed through the supercapacitor, and the magnitude of charging currents for the battery is reduced; the recovery ratio of the braking energy can be increased, and the service life of the battery can be prolonged.

A system for spraying fluids at variable flow rate using pulse width modulation utilizing a circuit including a reservoir, pump, spray nozzle, pulse width modulated valve. While no spray issues from a nozzle, the fluid circuit is closed with the reservoir as the initial and end point of the circuit. While no spray issues from a nozzle, the fluid flow through a heated nozzle functions as a heat sink. While spray issues from a nozzle, the circuit contains a means to maintain a specific fluid pressure. While no spray issues from a nozzle, the circuit pressure is much lower than the spray pressure allowing reduced energy consumption and lessening wear on the pump and motor. This system may be incorporated into a selective catalytic reduction (SCR) system for controlling NOX emissions from diesel engines using a urea-water solution as a fluid.

The invention discloses a laser frequency hopping underwater acoustic-induced digital communication system and a laser frequency hopping underwater acoustic-induced digital communication method. The reliability and security of both parties of communication in information transmission are guaranteed according to the channel characteristics of a communication environment. According to the invention, atmospheric optical communication and underwater acoustic communication are combined, the laser frequency hopping technology is adopted, a laser emits laser light under the control of a code formed by loading information to different repeated-frequency frames, and laser energy is transmitted by atmosphere to the surface of water and then interacts with water medium through evaporation or breakdown. Thus, optical wave energy is converted into acoustic wave energy which is transmitted underwater in different directions and can be received by an underwater acoustic collector placed in any position within a certain range underwater, and thus, non-line-of-sight data communication from air to underwater can be completed. As long as both parties of communication abide by an agreed laser frequency hopping communication protocol, the information security and privacy of both parties of communication can be guaranteed to a certain extent. Thus, the communication method applicable to an open channel environment has more practical values.

The invention provides an axial split-phase internal stator permanent magnet biased magnetic suspension switched reluctance flywheel motor comprising an external rotor, a flywheel and an internal stator. The external rotor is packaged at the internal side of the flywheel in a laminating way. An internal stator iron core and an external rotor iron core are divided into m segments along the axis according to the phase number. The internal side of each segment of external rotor is equidistantly provided with 12 rotor poles along the circumference. The internal stator iron core is provided with 8 narrow tooth main magnetic poles and 4 wide tooth suspension poles. Main pole control coils and suspension control coils are respectively wound on the narrow tooth main magnetic poles and the wide tooth suspension poles. The coils on each narrow tooth main magnetic pole are interconnected in series to form a main pole winding. Every two of the control coils on each segment of wide tooth suspension pole are connected in series so as to form two sets of suspension windings in an orthogonal direction. The size of the system can be reduced and the critical speed of rotation can be enhanced; the suspension supporting loss can be reduced and the operation efficiency can be enhanced; and the stator poles are separately provided with the suspension poles, the main magnetic poles and magnetic isolating rings so that the control algorithm can be simplified and the suspension performance and the decoupling effect can be enhanced.

The invention provides a gas drive type underwater disconnecting device, mainly comprising three parts including a high pressure gas cylinder assembly, a high pressure electromagnetic valve assembly and a mechanical body assembly, wherein the three parts are connected through a stainless steel high pressure steel pipe and a high pressure pipe joint. A three-way ball valve is installed between the high pressure gas cylinder assembly and the high pressure electromagnetic valve assembly, and a one-way valve is installed between the high pressure electromagnetic valve assembly and the mechanical body assembly. The high pressure gas cylinder assembly is used for storing high pressure gas, the high pressure electromagnetic valve assembly is used for controlling the on-off of the high pressure gas in a pipeline, the mechanical body assembly is used for separating machinery and cables of a manipulator and underwater operation equipment, the three-way ball valve is used for changing gas circuits, and the one-way valve is used for preventing sea water from flowing into the gas cylinder after the manipulator is disconnected. When the underwater operation equipment normally works, the gas drive type underwater disconnecting device can provide accurate installation positioning for hand and shoulder joints of the manipulator and can be reliably connected with the underwater operation equipment. When the manipulator is in a dangerous condition, reliable separation of the manipulator and the underwater operation equipment can be realized so that the underwater operation equipment can be separated from the dangerous condition.

The invention discloses a micro-nano machining method and a micro-nano machining device for a laser composite ejection liquid beam, and belongs to the technical field of micro-nano processing techniques. The micro-nano machining device comprises a laser pulse sequence regulator (1), a laser system (2), a laser beam adjusting system (3), a visible light transmission reflector (4), a laser beam and ejection liquid beam coaxial observation regulation system (5), a focusing lens (6), a regulating and control device (7), an ejection device (8), a micro-nano working table (9), an ejection liquid filtering circulation system (10), a laser power supply (11) and an overall control system power supply (12). The micro-nano machining method comprises a step of implementing micro-nano machining on a workpiece by taking laser beams generated from the laser system (2) and ejection liquid beams generated from the ejection device (8). The micro-nano machining method and the micro-nano machining device are applicable to machining of engine blade film holes.

The invention relates to a speed-regulating system for a switched reluctance motor specially used for an electric vehicle and belongs to the field of a power control system of the electric vehicle. The speed-regulating system is characterized in that an output end of a controller is connected with a control end of a power converter; an input end of the controller is connected with an external preset; the output end of the power converter is connected with the motor while the input end is connected with a storage battery; the number of poles of a stator/rotor of SRM (Switched Reluctance Motor) is 24/16; an output shaft of the switched reluctance motor is connected with a load; a sensor comprises a current detector and a position detector; the position detector is arranged in the switched reluctance motor; the output ends of the current detector and the position detector are respectively connected with the input end of the controller; the integrated consistency of the existing SRD (Switched Reluctance Driver) is specifically improved; the load characteristic of vehicle working condition is met; the instantaneous power is high; the overload capacity is high; the accelerating property is excellent; the speed adjustable range is wide; the fluctuating problem of low-speed torque of the motor is solved; the noise of the SRM is reduced; the service life of the battery is prolonged; the electricity-saving effect is obvious; and the demand on the motor for the electric vehicle is met.

The invention relates to a metal material preparative technology, in particular to a low frequency pulsed magnet field fine-grain solidification method for causing melt oscillation through electromagnetic force. A low frequency pulsed magnet field exciting coil is mounted outside a casting mold, when metal melt enters the casting mold through pouring equipment, a low frequency pulsed power supply is started, a pulse current generated by the low frequency pulsed power supply can generate a low frequency pulsed magnet field through the exciting coil, and the low frequency pulsed magnet field acts on the metal melt in the casting mold. The pulse discharge frequency fT is 1-25 Hz, the pulse waveform frequency fw is 1-50 Hz, and the pulse voltage Um is 0-500 V. The instantaneous magnetic field intensity of the low frequency pulsed magnet field technology is large, electromagnetic oscillation force with the direction varied in a reciprocating mode in the melt enables dendritic crystals to be broken more easily, no contact with the metal melt is achieved, pollution can be avoided, and the method can be applied to the solidification process of metal large-sized casting blank.

The invention relates to a synchronous photodynamic therapy device. The synchronous photodynamic therapy device can be used for synchronously controlling light illuminating power of a therapy light source according to the blood oxygen concentration in a diseased area of a patient under the control of a computer and can also be used for adjusting time and space distribution parameters of the light illuminating power in a therapy area through a spatial light modulator, or adjusting the light illuminating power of the therapy light source in a light source modulation method through cooperation of the computer and the spatial light modulator. In addition, according to the synchronous photodynamic therapy device, multiple spectrum structures can be adopted in the therapy light source, blood oxygen spatial distribution parameters of a treated part can be obtained through structured light illumination, then the space and time distribution of therapy light in the therapy area can be controlled, optimal matching of photosensitizer, light and oxygen can be achieved, and harmful effects of the photothermal effect and photochemical toxicity of the photosensitizer on peripheral tissues can be reduced.

The invention provides a method for carrying out time-sharing group frequency point interference on multiple target signals, aiming at providing an interference method which does not need to instantly interfere with all target signal frequencies. The technical scheme of the invention is as follows: the method comprises the following steps of: firstly, dividing target signals into m groups and the number of instantly interfered signals to be N; inputting information of targets to be interfered to a grouping configuration unit through an interference equipment master control unit, calculating multi-frequency-point interference signals to generate multiple groups of time-sharing and grouping periodic interference signals, carrying out initial-phase optimizing on possible combination of each group of frequency points by computer iterative operation program software, calculating and adjusting the initial phase with minimum envelope amplitude of each frequency point of each group of signals, establishing an initial-phase value data sheet in the grouping configuration unit, carrying out value assignment on the initial phase of each interference signal in each group by the grouping configuration unit by means of a lookup manner, outputting the initial phase subjected to value assignment to an interference exciting unit, carrying out power amplification on the output initial phase by a power amplifier, then outputting the initial phase subjected to power amplification to an antenna to be transmitted, and carrying out multi-frequency-point interference alternately and circularly on networking communication equipment.

The invention discloses a method for breeding an high-yield ascomycin strain by performing femtosecond laser mutagenesis on streptomyces hygroscopicus ascomycota subspecies and a culture medium preparation method; the method comprises the following steps: at room temperature, mixing mature slant spores of the streptomyces hygroscopicus ascomycota subspecies (ATCC14891) and sterile water to obtain monospore suspension containing 106-107 spores per milliliter; irradiating the spore suspension for 1-10 min by using the titanium sapphire femtosecond laser with centre wavelength of 800 nm, pulse width of 150 fs and frequency of 76 MHz under a irradiation power of 10-30m W; properly diluting the spore suspension, coating on a solid panel to culture, then screening by using a shake flask to obtain a high-yield ascomycin mutation strain. The method provided by the invention has the advantages that the used femtosecond laser mutagenesis method is feasible and safe to operate; the mutation effect is better than that of the traditional physical and chemical mutagenesis method, and the femtosecond laser mutagenesis method has great popularization value in breeding of microorganism pharmaceutical strains; by using the femtosecond laser irradiation to perform the mutagenesis, the high-yield ascomycin mutation strain can be bred. The positive mutation rate of the mutation strain is 5-30%, and fermenting unit is improved by 10-60% in comparison with that of an original strain.

The invention provides a method for thinning a sapphire substrate. The sapphire substrate is irradiated by femtosecond laser to generate a color center, and then the bottom surface of the sapphire substrate is scanned by ultraviolet laser. Compared with contact grinding and polishing, the method requires no application of pressure to the sapphire substrate. Breakage or surface crack of the substrate occurs less easily. Heat generation in the whole thinning process is low. Heat effect on photoelectric properties of epitaxial wafers can be reduced effectively.

The invention discloses a repetition frequency giant pulse gas-laser laser head, and relates to the technical field of the gas laser. The laser head comprises multiple groups of laser gain units, multiple total reflection mirrors, multiple sub plane total reflection mirrors, a plane total reflection mirror, a rotary driving apparatus, a plane part reflection mirror and a structural cavity; the multiple groups of laser gain units are uniformly distributed on the structural cavity; one total reflection mirror and one sub plane total reflection mirror are arranged at the two ends of each laser gain unit in the length direction respectively; the plane total reflection mirror is mounted on the rotary driving apparatus and are arranged opposite to the multiple groups of the sub plane total reflection mirrors; and the axis of a rotary shaft of the rotary driving apparatus coincides with the central axis. The plane total reflection mirror is rotated based on certain frequency to be uniformly arranged with the laser gain units, and the continuous discharge stimulation accumulation time, laser output interval time and the output giant pulse laser energy are all the same, so that the giant pulse laser with certain repetition frequency and capable of outputting the same energy continuously can be obtained.

The invention relates to an axial permanent magnet spherical surface magnetic levitation flywheel motor, belonging to the technical field of magnetic levitation motors. The axial permanent magnet spherical surface magnetic levitation flywheel motor comprises a flywheel, a rotor and a stator. The flywheel and the rotor form an integral body, the stator and the rotor are divided into an A phase anda B phase in an axial direction, and axial reverse magnetizing permanent magnets are respectively clamped between a rotor A-phase magnetic conducting ring and a rotor B-phase magnetic conducting ringand between a stator A-phase magnetic conducting ring and a stator B-phase magnetic conducting ring; the rotor comprises a rotor A-phase spherical surface iron core, a rotor B-phase spherical surfaceiron core, a rotor permanent magnet, the rotor A-phase magnetic conducting ring and the rotor B-phase magnetic conducting ring; the stator comprises a stator A-phase spherical surface iron core, a stator B-phase spherical surface iron core, a stator permanent magnet, the stator A-phase magnetic conducting ring, the stator B-phase magnetic conducting ring and a stator sleeve; each-phase stator spherical surface iron core is provided with a wide-tooth suspension poles, narrow-tooth torque poles and magnetic isolating bodies, and the suspension poles and the torque poles employ pole shoe structures and are respectively wound with suspension control coils and torque control coils. The axial permanent magnet spherical surface magnetic levitation flywheel motor improves the global uniformity ofair gap magnetic density, achieves the shaftless support of the flywheel and inhibits the gyroscopic effect; meanwhile, the system integration level, the operation efficiency and the reliability are improved, and the decoupling of the suspension magnetic circuit and the torque magnetic circuit is achieved.

,The invention discloses a strong electromagnetic pulse simulator capable of conveniently switching waveforms and a configuration method thereof, and the strong electromagnetic pulse simulator comprises: a pulse source which comprises a pulse forming module, wherein the input end and the output end of the pulse forming module are respectively connected with a high-voltage power supply and an antenna load, a travel switch and a replaceable energy storage capacitor and inductance component are arranged in the pulse forming module, the high-voltage power supply and the travel switch are jointly connected with a control system, and the lower part of the antenna load is provided with an available test area. According to the invention, the waveform of the output voltage can be conveniently changed according to requirements, the frequency band is wide, the high-frequency component is rich, the instantaneous power is large, a strong electromagnetic interference signal can be well simulated, and the anti-electromagnetic interference performance of an electronic system can be evaluated.

The invention relates to an integrated self-charging storage battery system taking a hydrogen fuel cell as a charger. The system comprises a hydrogen supply device, an electric pile management system,a display, an electric pile, a storage battery charger and a storage battery, wherein the hydrogen supply device provides a hydrogen source for the whole system, the electric pile management system is a control center of the whole system, the electric pile management system is respectively connected with the electric pile, the storage battery charger, the display and the storage battery, an inputend of the storage battery is connected with the storage battery charger, an output end of the storage battery is connected with the pile management system, an input end of the storage battery charger is connected with the galvanic pile, the galvanic pile is an energy conversion center of the whole system, the galvanic pile converts chemical energy of hydrogen into electric energy through electrochemical reaction, the storage battery charger performs voltage conversion of the electric energy generated by the galvanic pile and charges the storage battery, and the storage battery supplies powerto an external load and a galvanic pile management system. The system is advantaged in that purposes of high efficiency, cleanness and no pollution are achieved, the instantaneous power is high, thesystem cost is greatly reduced, and the service life of the galvanic pile is prolonged.

The invention provides a method and a device for controlling the instantaneous power of a wind power generator set. When it is judged that the working parameters of a grid-connected current transformer do not meet a preset condition, the grid-connected increment current set value of a grid-side converter is obtained through utilizing working parameters detected at a current moment and a previous moment. The grid-connected increment current set value of the grid-side converter and a current grid-connected output current set value are overlapped. In this way, the grid-connected output power is controlled on the grid-side converter by utilizing an obtained overlapped current set value. The response speed of the voltage of a direct-current bus is accelerated, so that the power speed of the wind power generator set fed into a power grid is increased. The rotating speed of the wind power generator set is reduced. When the working parameters of the grid-connected current transformer meet thepreset condition, a chopping booster circuit of a machine-side converter returns to the normal working mode. Therefore, the generation of faults such as power comparison errors, super power and the like is avoided.