11results about How to "Improve working characteristics" patented technology

The invention discloses an overload protection method for an electric drive system. The overload protection method comprises the steps of collecting temperature and / or current data corresponding to the electric drive system; respectively comparing the temperature and / or current data with a preset temperature or current overload protection threshold value and an overload pre-protection threshold value, and judging whether to limit the output torque and the power or not; wherein the overload pre-protection threshold value is smaller than the overload protection threshold value; when the temperature or the current exceeds the overload pre-protection threshold value and is smaller than the overload pre-protection threshold value, the output torque power is limited through an overload pre-protection strategy; and when the temperature or the current exceeds an overload protection threshold value, an overload protection strategy is adopted to limit the output torque power. Before the overload protection threshold value is reached, the possibility of reaching the overload protection threshold value is reduced in an overload pre-protection mode, and the operation reliability of the system is improved.

The invention discloses an anti-stripping warm mix asphalt regenerant with high and low temperature performances. The regenerant comprises the following components: a common asphalt regenerant; a viscosity reducer; a crosslinking curing agent; a slow crosslinking agent; the mass ratio of the common asphalt regenerant to the viscosity reducer to the cross-linking curing agent to the slow cross-linking agent is 100: 10: (30-90): 5. The regenerant can enhance workability and reduce carbon emission in the regeneration process of the aged asphalt mixture, the regenerated asphalt mixture has excellent high-temperature deformation resistance, low-temperature crack resistance and stripping resistance, the engineering problems of low-carbon regeneration and durable service of the aged asphalt mixture can be greatly solved, the preparation process is simple, the cost is low, and the method is suitable for industrial production. The process is low-carbon and efficient, equipment does not need to be transformed and upgraded, the resource utilization rate is high, and economic, environmental and social benefits are remarkable.

The invention provides a shift register, a gate drive circuit and a display device, relates to the technical field of display, and is used for narrowing the frame width of a display product better. The shift register comprises an output circuit, the output circuit comprises a first output transistor, the first output transistor comprises a double-gate transistor, a top gate of the first output transistor is coupled with a cascade signal output end, a bottom gate of the first output transistor is coupled with a regulation and control end, and the double-gate transistor comprises a double-gate transistor. A first electrode of the first output transistor is coupled with a first level signal input end, and a second electrode of the first output transistor is coupled with a gate driving signal output end; the cascade signal output end is used for controlling the first output transistor to be switched on or switched off, and the regulation and control end is used for controlling characteristic parameters of the first output transistor.

This invention relates to a method for fabricating a semiconductor device. One embodiment of the method includes the following steps: providing a substrate into a heat treatment apparatus; performing a first annealing process for passivating the surface of the substrate; performing a second annealing process for forming a first gate insulating film on the substrate; and forming a gate conductive layer on the first gate insulating film. According to the method for fabricating a semiconductor device according to embodiments of the invention, the thickness of the gate insulating film can be easily adjusted during semiconductor fabrication, reducing the thickness of the gate insulating film compared to existing technologies.

The prepared composite regenerant comprises a common asphalt regenerant, an auxiliary viscosity reducer, a reaction regenerant and an anti-aging agent in a mass ratio of 100: (25-50): (1-3): (5-15). The preparation method of the viscosity-reducing and life-prolonging type warm-mixing recycled asphalt comprises the following steps: heating aged asphalt to a warm-mixing temperature of 125-150 DEG C, adding 5-10% of the composite regenerant, and mixing for 5-15 minutes to obtain the viscosity-reducing and life-prolonging type warm-mixing recycled asphalt. The method is wide in application range, has universality, and can be used for regeneration of common asphalt such as common matrix asphalt, SBS modified asphalt, rubber asphalt or polymer composite modified asphalt; the viscosity of the recycled asphalt in the mixture can be obviously reduced, the high and low temperature performance and the deformation resistance of the recycled asphalt can be synchronously improved, and meanwhile the service life of the recycled asphalt is obviously prolonged.

The application discloses a PIN diode with an arc-shaped gradually-changing tube core, which comprises a substrate and a diode packaging structure, wherein the diode packaging structure is arranged on the substrate; the diode packaging structure comprises a first anode metal plate, an anode air bridge, a tube core, a cathode metal plate and an N-type high-doped layer; the first anode metal plate is connected with a second anode metal through the anode air bridge; the tube core comprises the second anode metal, a P-type high-doped layer and a semiconductor I layer; the second anode metal plate is in contact with the P-type high-doped layer to form an anode ohmic contact electrode; the cathode metal plate is in contact with the N-type high-doped layer to form a cathode ohmic contact electrode; the P-type high-doped layer is arranged directly below the second anode metal plate; and the semiconductor I layer is arranged between the P-type high-doped layer and the N-type high-doped layer. The application can eliminate the electric field concentration effect and improve the maximum withstand power of the diode by adjusting the gradually-changing shape.

The application provides an anti-surge structure and a compressor, and belongs to the technical field of compressors. The anti-surge structure comprises a body, the body is an air inlet branch plate or a stator blade, the body has a side wall and a top wall, the top wall is used for being connected with a casing, the body has an air guide channel inside, and the air guide channel is used for being communicated with an air source; a plurality of air guide holes are arranged on the side wall in a spaced manner along the height direction of the side wall, the air guide holes are communicated with the air guide channel, and the axis of the air guide hole is at a set angle with the side wall; the airflow after passing through the air guide channel and the air guide hole blows to the air inlet main flow path of the compressor, so as to adjust the air inlet attack angle of the rotor blade in the compressor. The anti-surge structure provided by the application plays a regulating role on the air inlet attack angle of the rotor blade, makes the air inlet more smooth, improves the working characteristics, expands the stable working range, and realizes the anti-surge of the compressor.

This invention belongs to the field of vehicle vibration control technology and discloses a dual-valve, dual-capacity symmetrical integrated adjustable shock absorber, including a main hydraulic cylinder, dual electrically controlled adjustable valves, dual capacities, and symmetrical oil circuit connectors. The piston inside the main hydraulic cylinder divides the cylinder body into an upper working chamber and a lower working chamber; the dual electrically controlled adjustable valves include independently set tension-side and compression-side adjusting valves; the dual capacities are a tension stroke spiral tube and a compression stroke spiral tube, both adopting a spiral hollow high-pressure pipeline structure. The symmetrical oil circuit connectors seal and connect the main hydraulic cylinder, the two sets of adjusting valves, and the two sets of spiral capacities, forming two physically isolated, functionally independent oil circuits. This invention abandons the traditional single-valve, single-pipe coupling architecture and adopts a stroke decoupling layout. The dual valves independently control the oil flow to achieve continuously adjustable damping force, and the dual capacities provide directional capacities for their respective strokes. The valve-pipe integrated structure optimizes the oil circuit pressure transmission characteristics, enabling completely independent control of compression and tension stroke damping and capacities, overcoming the inherent defects of parameter coupling in existing technologies.

An organic electroluminescent device includes: a first electrode; a second electrode; and an organic layer formed between the first electrode and the second electrode. The organic layer comprises a light-emitting layer formed using a solution containing an organic electroluminescent material and a solvent. The organic electroluminescent material comprises a first substrate as shown in [Chemical Formula 1], a second substrate as shown in [Chemical Formula 2], and a dopant. [Chemical Formula 1] [Chemical Formula 2]

The present application relates to the field of direct current transformer, in particular to a kind of modular multilevel direct current transformer modulation and control method, by controlling the phase shift angle size between different half-bridge module drive signals of half-bridge module valve group, modulation generates the asymmetric ladder wave with two rising slopes and falling slopes, and by detecting the output voltage size, the rising slope and the falling slope of the asymmetric ladder wave of modular multilevel direct current transformer half-bridge module valve group output are changed and the duty cycle of full-bridge module switch tube, so as to adjust the output voltage of modular multilevel direct current transformer.The modulation and control method realizes the fixed-frequency operation of resonant circuit, reduces the design difficulty of magnetic element, while realizing the zero-current turn-off of full-bridge module switch tube on the low-voltage side of modular multilevel direct current transformer, can reduce current stress and improve the working efficiency of converter.

An organic electroluminescence device including: a first electrode; a second electrode; and an organic layer formed between the first electrode and the second electrode, the organic layer including an emission layer formed using a solution containing an organic electroluminescence material and a solvent, the organic electroluminescence material including a first host represented by the following [Chemical Formula 1], a second host represented by the following [Chemical Formula 2], and a dopant.[Chemical Formula 1][Chemical Formula 2]