118 results about "Change stage" patented technology

The invention relates to the technical field of the optimization of computer performance and particularly relates to a dispatching method for working load of an elastic cloud computing platform. Thedispatching method comprises the steps of initializing virtual machines and tasks and combining the virtual machines according to the relative load among the tasks; dividing the total execution time of the tasks into setting number of scheduling phases, and working out an optimal scheduling policy according to the working load of a current task by a dispatching system; then dividing or combining the scheduling phases according to the degree of similarity of the working loads of two adjacent scheduling phases; finally adjusting the number of times of simulation to the sequence of the divided or combined scheduling phases in a self-adaption way so as to determine the computing time of the next scheduling phase until the end of the program. According to the dispatching method, the adaptive multi-tasking load change stage can be configured reasonably, so that the dispatching performance of a whole system is improved, and the test time is reduced.

The invention discloses a multi-way access gateway device supporting a wireless network, which comprises a microprocessor module, a local storage module, a liquid crystal display module, a ZigBee communication module, an RFID (Radio Frequency Identification Device) reader module, a Bluetooth communication module, a Wi-Fi module and a 3G communication module. An access certification method comprises three stages: user registration, certification and password changing. In the user registration stage, a user registers through an access device to become a legal use. In the certification stage, data required by the user are returned by a terminal node after mutual certification of each two of the user, the access device, the gateway device and the terminal node. In the password changing stage, the registered user inputs a new password into the access device and the stored information is updated. The wireless access based on the Bluetooth, Wi-Fi and 3G is realized, large quantities of wiring in engineering applications is avoided, the speed of device deployment is increased, and the security of the access to the gateway device by the user can be improved when the access certification method is adopted.

The invention relates to a high-frequency tuning mass damper which comprises a connection plate, elastic elements, damping elements and a mass block. The mass block is arranged between the connection plate and a pre-tensioning connection piece, and the elastic elements are arranged between the mass block and the pre-tensioning connection piece and between the mass block and the connection plate respectively. The damping elements are arranged between the mass block and the pre-tensioning connection piece or / and between the mass block and the connection plate. A pre-tensioning structure is arranged between the connection plate and the pre-tensioning connection piece. The pre-tensioning structure exerts pre-tensioning force on the elastic elements to compress the elastic elements until the end portions of the elastic elements are fully contacted with the adjacent mass block, or the pre-tensioning piece or the connection plate. The elastic elements are made to be in a linear changing stage in which external force borne by the elastic elements and compression displacement of the elastic elements are in direct proportion. The high-frequency tuning mass damper is compact in space structure, suitable for control over vibration of a structure with 15Hz or higher frequency, superior in cost performance ratio, and wide in market application prospect.

The invention discloses a low-loss MnZn ferrite material sintering method. The method includes four temperature change stages which mainly induce: a, the first temperature rising stage, b, the second temperature rising stage, c, the temperature maintaining stage and d, the temperature falling stage. According to the method, due to the fact that temperature and oxygen partial pressure are controlled in the whole sintering process of temperature rising, temperature maintaining and temperature falling, loss of MnZn power ferrite can be reduced. The method has the advantages of being low in sintering temperature and low in loss when applied to preparing the MnZn ferrite, and the efficiency of MnZn ferrite elements is greatly improved.

The invention provides a double-factor authentication key agreement protocol suitable for a multi-gateway wireless sensor network. The protocol is divided into five stages: an initialization stage, aregistration stage, a login stage, an authentication stage and a key change stage. Fuzzy verification and honeywords methods are adopted in the user authentication part, so that the united password identity guessing attack based on the stolen intelligent card is effectively resisted. In the scheme, key negotiation is based on discrete elliptic curve encryption and can resist sensor capture attacks, so that the forward security of the protocol is ensured.

The invention relates to a capacity grading method for a power-type lithium ion battery. The method successively comprises the following steps of a first constant current changing stage, a charging-discharging circulating stage, a second constant current changing stage, and a constant current discharging stage, wherein a charging current of the first constant current changing stage is 0.1-0.7 C, acharging current of the second constant current changing stage is 0.5-0.8 C, a cut-off voltage is 3.6-5 V, a cut-off current is 0.02 C, and a discharging current of the constant current discharging stage is 0.5-0.8 C. The capacity grading method for the power-type lithium ion battery is short in consumed time, and simple in process, and is capable of stabilizing an SEI film formed in a formationperiod as possible within limited time. A battery through the capacity grading of the capacity grading method is not much different from a battery prepared by an original capacity grading technology in the aspects of discharge capacity and capacity retention ratio. So, the capacity grading method is used for effectively improving the production capacity under the precondition without losing the battery performance.

The invention relates to an inverter power tube open circuit fault diagnosis method in a permanent magnet synchronous motor control system. According to the method, a differential current state observer is designed based on a voltage balance equation to estimate the ideal differential current of the permanent magnet synchronous motor, and the distortion amount of the motor differential current isestimated by combination of the measured value of the differential current; and then a corresponding fault detection and positioning algorithm is designed according to the distortion rule of the motordifferential current caused by faults, so that the rapid and accurate on-line fault diagnosis of the circuit fault of the inverter switch tube is realized. The method has the advantages of being highin anti-jamming capability, strong in robustness, high in detection speed, high in detection accuracy and the like. In addition, the method can also be suitable for motor speed stabilization and speed change stages, and is suitable for two different modulation modes (a spatial voltage pulse width modulation mode or a carrier-based pulse width modulation mode). Therefore, the method is a universalvoltage source type inverter single switch tube open circuit fault diagnosis method.

A gear shift device is used in a transmission of an engine, and includes: a shift drum that changes a speed change stage of the transmission according to a rotational position about an axis; an actuator having a driving shaft substantially orthogonal to this shift drum; a worm shaped barrel cam that is arranged parallel to the driving shaft of this actuator and that has a cam groove on an outer circumference; and a wheel gear that is coaxially fixed on the shift drum and that has a plurality of pins on an outer circumference. At least a pair of each pin of the wheel gear and the cam groove of the barrel cam is engaged with each other, and the shift drum is rotated by the actuator via the barrel cam and the wheel gear, to thereby change the speed change stage of the transmission.

At the time of a failure in the second group of engagement devices, the manner of input of oil pressures to a fail-safe valve group is changed via a priority degree switching valve on the basis of the state of engagement of engagement devices of the first group in such a manner that the predetermined degrees of priority for the supply of one of oil pressures PC4, PB1 output from linear solenoid valves SL4, SL5 to a corresponding one of a clutch C4 and a brake B1 via the fail-safe valve group are changed so as to avoid an event that the fail-safe gear stage established in order to prevent the occurrence of interlock of the automatic transmission involves a downshift of two or more stages from the speed change stage maintained immediately prior to the occurrence of the failure. Therefore, it is possible to prevent the occurrence of an uncomfortable behavior of the vehicle caused by the shift to the fail-safe gear stage.

The invention discloses a calculation method for displacement and displacement time in a dynamic precipitation process of a pressure-bearing partially penetrating well or well group. According to the calculation method, a specific calculation method for the displacement and the displacement time in a process of changing an initial water level of an underground water level of the pressure-bearing partially penetrating well or well group to a target water level is established according to the basic theory and basic law of underground water seepage on the basis of the existing calculation formula for daily displacement when a stable water level is kept in the precipitation process of the pressure-bearing partially penetrating well or well group by carrying out integration on a precipitation area. According to the calculation method, the current situation that the calculation of the displacement at a water level changing stage is dependent on experiences for a long time when the pressure-bearing partially penetrating well or well group is designed nowadays is changed, and the calculation and dynamic control on the displacement in the whole precipitation process of the pressure-bearing partially penetrating well or well group in engineering construction are realized.

The invention discloses a method for performing remote analysis and diagnosis decision-making on an operation state at bearing bushing temperature of a hydroelectric generating set. The method comprises the following steps: establishing a state analysis foundation database for the bearing bushing temperature of the hydroelectric generating set and a bushing temperature failure database; remotely monitoring and acquiring important parameters, such as the bearing bushing temperature of the hydroelectric generating set; by adopting a two-stage pattern analysis method for the bearing bushing temperature of the set, i.e. analysis is performed on the change of the bearing bushing temperature under the working conditions of the starting-up mode and the operation mode of the hydroelectric generating set, and by adopting a three-stage trend analysis method, i.e., analysis is performed on the bushing temperature steep rise stage, the bushing temperature slow change stage and the bushing temperature steady state stage of the bearing bushing temperature in a time slot from starting up to steady-state operation of the hydroelectric generating set, performing comprehensive analysis on indexes, such as temperature rise average speed, instantaneous speed, maximum speed and steady-state bushing temperature change rate during operation at the bearing bushing temperature of the hydroelectric generating set, and finally, performing the remote analysis and the diagnosis decision-making on the operation state at the bearing bushing temperature of the hydroelectric generating set.

A hydraulic control apparatus of a vehicular automatic transmission has a plurality of hydraulic friction engagement devices that are selectively engaged and released to establish a plurality of forward speed change stages of different speed change ratios. The forward speed change stages are achieved through engagement of predetermined friction engagement devices, of the plurality of friction engagement devices. If it is determined that a predetermined speed change stage corresponding to a predetermined shift output is not established, the hydraulic control apparatus identifies a hydraulic friction engagement device having a bad engagement that is a cause of the non-establishment of the predetermined speed change stage, on the basis of the state of engagement oil pressure of the predetermined friction engagement device.

The invention discloses a drying process for preventing a dried iron core from rusting. The drying process comprises the four main steps as follows: a pre-dewatering stage, a preheating stage, a pressure changing stage and a final drying step, wherein the pre-dewatering stage comprises gradually heating air in a drying furnace until the temperature is 50 DEG C; the preheating stage comprises performing vacuum pumping until the pressure in the drying furnace as low as 40000 pa, then mixing air outside a tank until the pressure in the drying furnace returns to 80000 pa, preheating, repeating in this way: performing vacuum pumping, mixing air and preheating until the temperature of the iron core reaches 70 DEG C; the pressure changing stage comprises performing vacuum pumping for a period of time, then keeping the pressure for a period of time, repeating in the way until the pressure in the drying furnace is as low as 500 pa and the temperature of the iron core reaches 75 DEG C; and the final drying step comprises continuously performing vacuum pumping until the pressure in the tank is as low as 100 pa. The drying process has the beneficial effects that the drying process is divided into four stages, water vapor in the drying furnace during the drying process is guaranteed to be timely discharged and the oxygen content is reduced, so that the rusting of the iron core can be effectively prevented.

Disclosed is a control device for a continuously variable transmission (4) that has, as forward speed change stages, a first speed change stage (32) and a second speed change stage (33).The control device comprises a coordinated speed change means (12a) that carries out a coordinated speed changing in such a manner that when the speed change stage of an auxiliary transmission mechanism (30) is about to be changed, a speed change speed of the auxiliary transmission mechanism (30) is coordinated with a variator (20) and the variator (20) is controlled to carry out a speed change in a direction opposite to that of the auxiliary transmission mechanism (30) while carrying out the speed change operation of the auxiliary transmission mechanism (30), and a torque control means (12b) that carries out a torque regulating control during the coordinated speed changing under up-shifting by the coordinated speed change means, the torque regulating control being a control for effecting a torque-up operation to a driving source (1) after effecting a torque-down operation to the driving source and including a timing through which a starting time point of a drive force gap caused by the coordinated speed changing is advanced and a timing through which an ending time point of the drive force gap is delayed.

The invention discloses an intelligent vehicle collision safety prediction method, comprising the following steps: 1) adopting an obstacle detection algorithm based on a single image to determine whether there is an obstacle or a vehicle in front of a microminiature vehicle; 2) a processor calibrates the two cameras, determines the height and the distance of the obstacle by adopting the stereo vision method and transmits the information to the controller; 3) a distance measurement device detects the vehicle condition of the adjacent two lanes, provides a traveling area for overtaking and lane-changing, and transmits the information of the traveling area to the controller. The invention provides an intelligent vehicle collision safety prediction method. The collision safety model is established in the approaching stage, the overtaking lane and the overtaking lane changing stage, the safety monitoring is carried out in the whole stage in the overtaking process, and the safe operation isensured. At the same time, the prediction method of each stage provided by the invention can more sensitively realize the collision prediction, and the safety in the automobile operation process is improved.

The invention provides a PWM (pulse width modulation) dimming method for an LED (light-emitting diode). The PWM dimming method comprises the following steps: starting a first timer in an interrupt mode and a second timer in a free counting mode of a single chip microcomputer; making statistics on the number of interrupts of the first timer and count values of the second timer during the brightness change stage of the LED; performing at least one zero clearing on the count values of the second timer during the statistical process; and comparing the number of interrupts with the count values in real time, and outputting a PWM wave the level value of which changes along with the comparison result, wherein the PWM wave is applied to the LED for regulating the brightness of the LED. The invention further provides a dimming device corresponding to the method. The PWM dimming method and device for the LED disclosed by the invention can solve the problem of few PWM output ports of the existing cheap single chip microcomputer.

The invention is applicable to the field of motors, and provides a method and a system for identifying the rotational inertia of an alternating current servo system. The method comprises the following steps of: acquiring time, a speed change value, and an average torque of a first speed change stage at the first speed change stage of the alternating current servo system to obtain a first speed change stage motion equation; acquiring time, a speed change value and an average torque of a second speed change stage at the second speed change stage of the alternating current servo system to obtain a second speed change stage motion equation; and calculating rotational inertia according to the difference between the first speed change stage motion equation and the second speed change stage motion equation, wherein the average speed of the first speed change stage is the same as that of the second speed change stage. The technical scheme has the advantages of high identification accuracy of the rotational inertia.

The invention discloses flexible shaft toughening equipment and flexible shaft toughening forming method for bent glass. The equipment comprises a transition section, a forming section and a toughening section, the transition section comprises a plurality of tensioned flexible cables and transition roller ways installed on the flexible cables, the flexible cables and the transition roller ways form a forming net, and in the process that heated glass passes through the forming net, the glass is gradually formed; the forming section is provided with a plurality of upper forming arc plates and aplurality of lower forming arc plates, the upper forming arc plates and the lower forming arc plates are respectively provided with forming roller ways or a plurality of rotatable forming roller wheels, and a forming channel is formed between the forming roller way or the plurality of forming roller wheels on the upper forming arc plates and the forming roller way or the plurality of forming roller wheels on the lower forming arc plates; and the equipment can also comprise a shape stabilizing section to correct the shape of the curved glass. By utilizing the equipment provided by the invention, the curved glass meeting the requirements is obtained after the glass is subjected to a gradual change stage, a forming stage and a shape stabilizing stage, and toughening is performed, so that theprecision and quality of the curved glass are improved.

The automatic transmission system includes a shift lever for changing stages by a user, a shift-lock device for fixing or releasing the shift lever, and a control unit including a shift control logic changing the stages of the transmission in accordance with the stage changed by the shift lever and a shift-lock control logic controlling the shift-lock device by stages for an initial time and a maintenance time after the initial time from when the stages may be changed such that the shift lever may be fixed, in order to shift-lock the shifted shift lever when the stages may be changed by the shift control logic.

In a work vehicle according to the present invention, a control device calculates, for each of a plurality of speed-changing stages in a PTO transmission, an expected maximum rotational speed of PTO rotary power that is output from the PTO shaft when an engine rotational speed changing operation member is operated to a maximum extent, and shows, in a listed manner, the calculated results in a liquid crystal display part of a display device. The present invention can inform an operator of the maximum rotational speed of PTO rotary power that is output from the PTO shaft for each speed-changing stage in the PTO transmission without performing a speed changing operation on the PTO transmission.

The invention discloses a wavelength-changing tunable diode laser absorption spectrum gas detection device and method. The device comprises a laser, a circulator, a reflective probe, a photoelectric detector and a data conversion unit, wherein the laser outputs an optical signal of which the wavelength and light intensity change along a drive current cycle when excited, the optical signal is transmitted to the circulator, and the circulator receives the optical signal of the laser and transmits the optical signal to the reflective probe; the reflective probe contains an open light path with asection of fixed distance, so that interaction between the optical signal and tested gases is realized; and the optical signal returned by the reflective probe is transmitted to the photoelectric detector, and the optical signal is converted into a weak current analog signal to be output to the data conversion unit so as to obtain the tested gas concentration value. The light intensity change andwavelength change in each cycle are divided into two stages. A second light intensity change stage in which the wavelength covers a tested gas absorption line is compensated by utilizing a first lightintensity change stage in which the wavelength the far away from the tested gas absorption line, and the measurement accuracy and long-term stability are improved.

The invention discloses an authentication and key agreement method capable of resisting leakage of a password. The method comprises six parts: a system initialization stage, a user registration stage,a user login stage, a user authentication stage, a password changing stage and a key changing stage. The method provided by the invention helps the user to efficiently authenticate with the server and negotiate the session key, effectively resists the attack of the side channel, and is very high in practicability.

Provided is an electric assisted bicycle with a configuration wherein a drive unit for internally combining human powered drive force and auxiliary drive force is fitted with an interior transmission with automatically switchable speed-change stages. A drive unit disposed at an intermediate position between a front wheel and a rear wheel is internally fitted with a transmission mechanism (25) that transmits combined force of human powered drive force and auxiliary drive force from a motor while changing speeds by switching the combined force to a plurality of stages. The transmission mechanism (25) is fitted with a speed-change weight (81) of which the posture is changed in accordance with a centrifugal force when being rotated, and configured such that as the rotation speed of a crank shaft (7a) increases, the posture of the speed-change weight (81) is changed so as to be switched from low speed stage side to high speed stage side.

The invention discloses a manufacturing method of a middle-high voltage corrosion foil for an aluminum electrolytic capacitor. The manufacturing method comprises the following steps that a middle-highvoltage electronic aluminum plain foil is adopted and is soaked and pretreated by a sodium hydroxide solution; a hydrochloric acid and sulfuric acid solution is subjected to electrifying hole corrosion; a hydrochloric acid, sulfuric acid and phosphoric acid solution is subjected to chambering electrifying corrosion; salpeter solution soaking is carried out; and after pure water cleaning, primarynitrogen protection annealing and secondary nitrogen protection annealing heat treatment is carried out. Two stages of annealing heat treatment are adopted, and comprise a heating stage, a primary constant temperature stage, a linear temperature changing stage, a secondary constant temperature stage and a cooling stage. By means of two stages of nitrogen protection annealing heat treatment, the bending performance of the electrode foil is improved through the recovery and recrystallization process of aluminum metal. After the corrosion foil prepared through the method is subjected to formationtreatment, the bending performance is improved by 20% or above, and a great promotion effect is achieved on miniaturization of the aluminum electrolytic capacitor.

The invention provides a planar antenna array. The planar antenna array comprises multiple open waveguide units and waveguide signal transmission channels; each signal transmission channel is equipped with a multi-stage one-to-two power distribution network, and adopts a reflective structure which consists of multiple slowly-changed stage structures and slowly-changed stages; the open waveguide units, waveguide openings, a first polarized selection cavity, a second polarized selection cavity, a first polarized connecting opening, and a second polarized connecting opening are combined with multiple stage structures and interference convex structures, so as to effectively realize impedance conversion and impedance matching and expand frequency band bandwidth; in addition, the requirement on the manufacturing precision is relatively low, and the manufacturing cost is even lower; in addition, the invention provides a polar antenna with a polarization regulation function on the basis; the polar antenna comprises the polar antenna array with the above-mentioned structure, and a polarization regulation apparatus; the polarization regulation apparatus comprises a polarization synthesizer and a polarization receiving-transmitting device, wherein the common ports of the polarization synthesizer and the polarization-taking device are directly connected; and the polarization-taking device rotates along an axial line, and realizes dual-polarization receiving-transmitting and sharing through a minute quantity of microwave reactive devices.