144 results about "Transition stage" patented technology

The invention discloses a speaker recognition method based on depth learning. The method comprises the following steps: S1) carrying out pre-emphasis and overlapping-type framing windowing on collected voice signals; S2) carrying out endpoint detection on the collected voice signals by utilizing a dual-threshold endpoint detection method based on short-time energy and short-time zero-crossing rate, and judging and indentifying the staring moment, transition stage , noise section and ending moment of the voice; S3) carrying out feature extraction on the voice signals; S4) forming a depth belief network model based on restricted boltzmann machine hierarchy, training the established depth belief network model by utilizing layer-by-layer greedy algorithm and with speaker voice feature parameters being combined, and adding a Softmax classifier to the top layer of the depth belief network model; and S5) inputting the voice features of a speaker to the depth belief network model obtained after being subjected to training, calculating the probability that the model outputs voice features similar to the voice features of the other speakers, and selecting the speaker corresponding to the maximum probability as recognition result.

A method and apparatus for swapping functionality of a lead unit and an end-of-train remote unit on a distributed power railroad train. The communications system comprises a swap function that executes through a plurality of process steps to swap the functionality of the lead unit and the end-of-train remote unit. The train operating conditions must first be determined to ensure that the swap function can be executed. The communications system is placed in an idle mode and brakes and safety locks applied to ensure against train movement. Each remote locomotive in the train is commanded to a transition stage and reconfigured to receive commands and messages from the new lead unit. Once the train operator has relocated from the old lead unit to the new lead unit, the old lead unit transitions to remote status and the new lead unit commands an end to the transition period. The train brakes are released and the communications system placed in a normal operational mode, at which time motive power can be supplied for train movement.

A preparation method of a high-capacity monocrystalline type ternary cathode material comprises steps as follows: S1, a nickel cobalt manganese hydroxide precursor of a core-shell structure is prepared with a coprecipitation method, a loose and porous core is prepared by intermittently introducing a certain quantity of bicarbonate at the initial stage of core making, after core making ends, and loose flaky shells are prepared by substantially reducing the rotation speed and increasing pH; meanwhile, at the core-shell transition stage, a dispersant is added to effectively prevent agglomerationof the shells due to decrease of the rotation speed; S2, the prepared precursor and lithium salt are mixed and calcined once in the oxygen-rich atmosphere at the high temperature, and the monocrystalline type ternary cathode material is obtained. A battery is prepared from the ternary cathode material and has high capacity and good safety performance due to high lithium ion transport efficiency and reduced anisotropy in crystals. The problem of poor capacity of the material because of low lithium ion transport efficiency of monocrystalline type ternary materials is effectively solved. Besides,the monocrystalline type ternary cathode material is prepared through one-time sintering, the preparation procedure is simple, and the production cost is low.

The invention discloses a calculation method for dynamic reserves of gas reservoir. The calculation method aiming at solving the problems that an existing gas reservoir dynamic reserve calculation method is lack of information, harsh in use conditions or complicated in analysis process, the calculation method is based on the advantages of a material balance method and is combined with the gas seepage process, a vertical pipe flow model, a gas well productivity equation and a material balance equation. The calculation method comprises the following steps that S1, production dynamic data are prepared; S2, the bottom hole flowing pressure is calculated, specifically, the bottom hole flowing pressure of a gas well is calculated according to the processed production dynamic data of the gas well; S3, the formation static pressure is calculated, specifically, a binomial deliverability equation of the gas well is adopted to calculate the average formation pressure of the gas well; S4, flow stages are divided, specifically, a boundary control flow stage, an unstable flow stage and a transition stage are determined; and S5, the dynamic reserves are calculated, specifically, the dynamic reserves after the unstable flow stage of the gas well is finished is calculated, and the dynamic reserves is added to the cumulative gas production in the unstable flow stage to get the true dynamic reserves of the gas well.

The invention provides an electric cooker and a control method thereof. The electric cooker comprises a cooker body, a cooker cover, an inner pot, a pumping device and a controller, wherein the pumping device comprises an air pump, an air suction tube which is connected to the air inlet of the air pump and an exhaust tube which is connected to the air outlet of the air pump; the air pump is arranged on the cooker cover or the cooker body; the exhaust tube is communicated with the inner cavity of the inner pot by virtue of a first through hole in a cover plate; the air suction tube is communicated with the inner cavity of the inner pot by virtue of a second through hole in the cover plate; and when the electric cooker is in a water suction stage, a boiling stage and/or in a transition stage between the water suction stage and the boiling stage, the air pump is controlled to work by virtue of the controller. According to the electric cooker provided by the invention, the air pump is controlled to work by virtue of the controller, the air pump is used for blowing air into the inner pot, and along with the motion of an airflow, rice grains and water are stirred to do a turning motion, so that the rice grains get into full contact with the water in the water suction stage and the water suction effect of the rice grains is improved; in the transition stage, heat energy of the inner pot is uniformly transmitted to rice in the entire pot; and the boiling stage is conducive to the uniform gelatinization of cooked rice in the entire pot.

A clutch control apparatus for a power transmission system including an input rotating member and an output rotating member. The clutch control apparatus includes a friction clutch, and a control unit. The control unit sets a first desired clutch torque setting in accordance with a clutch slip indicator; sets a second desired clutch torque setting to an amount of torque input from the input rotating member to the friction clutch; controls the clutch torque to be the first desired clutch torque setting during a starting stage of the friction clutch; controls the clutch torque to be the second desired clutch torque setting during a steady-state stage of the friction clutch; and controls the clutch torque to gradually change from the first desired clutch torque setting to the second desired clutch torque setting during a transition stage between the starting stage and the steady-state stage.

The invention discloses a method for preparing nitrided ferrovanadium. The method comprises the following steps of: mixing vanadium oxides, carbonaceous powder, ferrous powder and water and forming and drying the mixture to obtain a formed substance, heating the formed substance in the nitrogen atmosphere, and then cooling the formed substance, wherein the heating process comprises a preheating stage, a transition stage and a nitridation sintering stage; the heating temperature in the preheating stage is from 400 DEG C to the temperature lower than 800 DEG C; the heating temperature in the transition stage is from 800 DEG C to the temperature lower than 1200 DEG C; and the heating temperature in the nitridation sintering stage is from 1200 DEG C to 1500 DEG C. The nitrided ferrovanadium prepared by the method provided by the invention has higher nitrogen content and apparent density.

The invention discloses a transition connection mining technique from outdoor mine to underground mine. A transition stage(2) from outdoor mining to underground mining is divided into a connection production middle section (4) and an emergency middle section (5); in the emergency middle section (5), mine chambers (13) and mine columns are divided, and the mine chambers (13) are firstly recovered by utilizing an open-stope method; in the mine chambers (13), upward drainage ventilation holes (12) are dug to be communicated with the connection production middle section (4); an enclosed waterproof door (11) is installed in a development drift (16) in the emergency middle section; a VCR (vertical crater retreat) method is adopted for mining by drilling rocks through an outdoor punching device (6) and discharging ores through an underground bottom structure; a drainage well (14) is drilled between a blind oblique well (10) and the waterproof door (11) and is communicated with the middle section of a main water bin; water accumulated in the mine chambers (13) is pumped and exhausted to the ground surface by a water pump in the main water bin, and the mine columns are recovered; then the underground mining stage (3) is transited. According to the invention, the safe and stable transition from outdoor mining to underground mining is realized, and the problems of underground sudden inflow of water threat, great damage of the preserved mine columns and difficulty in recycling at the rear stage are solved.

The invention provides an electric cooker and a control method thereof. The electric cooker comprises a controller and a water pump, wherein a water suction pipe is connected to a water suction port of the water pump; a water spraying pipe is connected to a water outlet of the water pump; both the water suction pipe and the water spraying pipe are communicated with the inner cavity of an inner pot; and the control method of the electric cooker comprises the following steps: when the electric cooker is in a water suction stage and/or in a transition stage between the water suction stage and a boiling stage, the water pump is controlled to work by virtue of the controller, the water suction pipe is used for sucking water from the inner pot, the water spraying pipe is used for spraying water into the inner pot, and along with the motion of a water flow, rice and water in the inner pot are stirred and moved. According to the electric cooker control method provided by the invention, under the control the controller, the water pump works in the water suction stage and/or in the transition stage; when the water pump works in the water suction stage, rice grains are stirred to get into full contact with the rice, so that the water suction effect of the rice grains is enhanced; and when the water pump works in the transition stage, a convection turning motion between the rice grains and the water is achieved, so that the rice grains are prevented from getting clotted, and heat energy of the inner pot is uniformly transmitted to rice in the entire pot conveniently so as to heat the rice grains more uniformly.

The invention relates to the technical field of digital welding of aluminum magnesium alloy, in particular to a welding method for setting double pulse welding parameters based on a mathematical model, and discloses a method for realizing welding by a fixed frequency and variable frequency calculation method of a double pulse metal-inert gas (MIG) welding wave form which is designed based on the mathematical model. Continuous adjustable change is performed according to a certain rule based on basic values a and b of strong and weak pulse groups, numbers n1 and n2 of strong and weak pulses are subjected to assistant adjustment, and a welding current range can be effectively expanded, so that the welding current in a wider range can be adjusted continuously. Meanwhile, at the transition stage of the strong and weak pulses, a gradual change mode is adopted by the pulse basic values to ensure that the transition of the strong and weak pulses is smoother, and the welding process is more stable.

The invention relates to the field of unmanned aerial vehicle (UAV) control, in particular to an automatic-disturbance-rejection flight speed and attitude control method of an unmanned helicopter. Themethod comprises steps of lateral channel control, vertical channel control, height channel control and yaw channel control. Each channel control is implemented as follows: a transition stage is arranged and a control input v is smoothened to obtain a smooth control input v1; according to an expansion state observer of a first-level ADRC, an observation state quantity and an expansion state quantity are obtained; on the basis of the smooth control input v1, the observation state quantity and the expansion state quantity, an output of a first-level automatic-disturbance-rejection controller; and at a disturbance compensation stage, a controller output of each channel is obtained respectively. According to the invention, coupling between all channels is viewed as disturbance; and the automatic-disturbance-rejection controller carries out coupling cancelling by disturbance estimation and disturbance compensation of the expansion state observer. A model-free controller is provided; and noprecise model of the controlled object is needed and controlling is realized by depending on an error.

The invention belongs to the field of biological treatment of sewage and discloses a device and a method for treating urban domestic sewage by coupling of short-cut nitrification anaerobic ammonium oxidation and denitrification treatment. The device mainly comprises a short-cut nitrification anaerobic ammonium oxidation and denitrification coupled SBR reactor. In a first stage which is a high-ammonia-nitrogen reinforcement stage, ammonia nitrogen is added into the urban domestic sewage to obtain high-ammonia-nitrogen low-carbon-nitrogen-ratio sewage which then enters the SBR reactor, short-cut nitrification anaerobic ammonium oxidation is mainly realized through low-oxygen aeration, and high total nitrogen removal load is finally realized by high-ammonia-nitrogen reinforcement of main functional bacteria namely ammonium oxidation and anaerobic ammonium oxidation bacteria. In a second stage which is a transition stage, influent ammonia-nitrogen concentration reduction and low-oxygen aeration are carried out. In a third stage which is an urban domestic sewage treatment stage, anaerobic stirring, low-oxygen aeration and anoxic stirring are performed respectively to realize removal of total nitrogen and COD in sewage. According to data, compared with integrated sewage directly used for urban domestic sewage treatment, integrated sewage subjected to high-ammonia-nitrogen reinforcement has advantages of stable nitrogen removal effects and energy saving and consumption reduction due to low-oxygen aeration in the aeration stage.

The invention discloses an electric vehicle charging scheduling method considering reservation and queuing in a charging station, being applied to the technical field of electric vehicle charging scheduling in a smart power grid, aiming to solve the charging scheduling problem that two charging modes of reservation charging and on-site queuing charging exist at the same time in an existing electric vehicle charging transition stage. The electric vehicle charging scheduling method comprises the following steps: firstly, determining a scheduling time window, reasonably allocating proportions ofcharging piles accessible to users in different modes through reinforcement learning based on historical charging data information of the users in the charging station, and then intelligently switching charging modes by comparing queuing waiting time and appointment waiting time of dynamically arriving users. The charging experience of the user in different charging modes is balanced and improvedin the transition stage, and the flexibility of user charging mode selection is improved, and the resource utilization rate of the charging pile is increased.

The invention discloses a compatible invoicing method, and the method comprises the steps: detecting an invoicing business request sent by a user terminal, and then sending an invoicing business list; selecting an invoicing business of one type of invoices through the invoicing business list, detecting the invoicing business list and transmitting the invoicing business, determining an invoicing template corresponding to the invoicing business, and transmitting a stream-type file of invoice corresponding to the invoicing business; transmitting the invoicing information to corresponding invoicing business subservices according to the invoicing type after the invoicing information is detected, so as to complete the invoicing of this invoice through the corresponding invoicing business subservice. According to the invention, the method provided by the invention can unify the invoice data collection process, shields the technical difference of the invoicing services of different invoices, provides high-expansion invoicing services convenient to upgrade, and gives full consideration to the invoicing advantages of network invoices and electronic invoices at the transition stage from the network invoices to the electronic invoices.

The invention relates to a system for simultaneously accessing an LTE (Long Term Evolution) public network and an LTE private network. The system comprises a first network module, a second network module, a main control board, an SIM (Subscriber Identity Module) card, a memory, a WiFi (Wireless Fidelity) module and a power supply module, wherein the first network module and the second network module are in communication connections with the main control board; the power supply module is electrically connected with the main control board; the memory and the WiFi module are in communication connections with the first network module and the second network module; the SIM card is in a communication connection with the main control board; an LTE public network communication module or an LTE private network communication module can be switched and selected in real time by a selection module according to a communication demand in order to perform a wireless network communication; the LTE public network and the LTE private network are recognized by a recognition module, and an execution module is used for executing a network needing to be accessed; and service demands at a multi-network fusion transition stage is met well, and remarkable economic benefit and social benefit can be achieved. Moreover, the system has the advantages of low implementation cost, stable and reliable performance, and easiness and convenience in applications.

The invention discloses a train control method and device. The train control method comprises the following steps that when a train is in an acceleration phase, if it is detected that the train needsto enter into a deceleration phase, the train enters a transition phase from the current acceleration phase; and after the train runs in the transition phase for a preset time, the train enters the deceleration phase, wherein the train runs in an idle running mode in the transition phase. The train control method and device can avoid the sudden change of the train from acceleration to deceleration, effectively ensure the smooth running of the train, reduce energy consumption, and enable passengers to be buffered when the acceleration and the deceleration are alternated, thereby improving the riding comfort.

The invention relates to the field of heat treatment, in particular to a partitioning method for heat treatment stages of a vertical quenching furnace. According to the partitioning method for the heating stages in the furnace in the heat treatment process of an aluminum alloy forge piece of the vertical quenching furnace, a vertical quenching furnace component temperature field predicating model is established for calculating the convection heat and the radiation heat on the surface of a component; on the basis, a mechanism model for evolution of the convection heat exchange amount and the radiation heat exchange mount in the quenching furnace is further established and used for obtaining the quantitative evolution condition between the convection heat exchange amount and the radiation heat exchange amount in real time; and based on the principle that two times of differences exist between the convection heat exchange amount and the radiation heat exchange amount, the heat treatment stages of the quenching furnace are quantitatively divided into the temperature rising stage, the transition stage and the heat insulation stage. According to the partitioning method, quantitative partitioning on all the stages in the heat treatment process of large aluminum alloy components of the vertical quenching furnace is successively achieved, and a series of problems of local temperature overshooting and the like generated in the process of conversion from the temperature rising stage to the heat insulation stage of the quenching furnace can be effectively solved.

The invention provides a motor starting method and device. The method comprises steps as follows: a control cycle is set in advance; a motor is controlled to sequentially execute a positioning stage and an asynchronous drag stage; at a transition stage between the asynchronous dragging stage and a position sensorless speed closed-loop control stage, the followings are executed: according to the control cycle, a command value of direct axis current of the motor is controlled to change in a manner of negative correlation with time, and according to the control cycle, a command value of alternating axis current of the motor is controlled to change in a manner of positive correlation with time; direct axis current of the motor is controlled in real time according to the current command value of the direct axis current, and alternating axis current of the motor is controlled in real time according to the current command value of the alternating axis current; after the transition stage, themotor is controlled to execute the position sensorless speed closed-loop control stage. By means of the motor starting method and device, the success rate of motor starting can be increased.