1220results about How to "Not easy to fail" patented technology

A method in a data processing system for minimizing read/write errors caused by impaired performance of a hard disk drive during runtime operation of the hard disk drive. The runtime operation includes an active mode during which read/write operations are conducted and a standby mode which occurs while no read/write operation is underway. First, at least one performance parameter of a hard disk drive is monitored during a standby mode of operation. Next, in response to detecting a degraded value of the at least one performance parameter, performing preventive recovery action only during the standby mode of operation, such that the performance parameter is restored to an acceptable value without interfering with hard disk drive operation during an active mode.

A method and system within a data processing system for predicting failure of a hard disk drive having a fluid bearing during runtime operation of said hard disk drive, wherein said fluid bearing has an established signature dynamic fluid response. First, a runtime vibration level of the fluid bearing is measured. This runtime vibration level is then translated into a runtime dynamic fluid response which provides an indication of the operating condition of the fluid bearing. The runtime dynamic fluid response is compared with the baseline dynamic fluid response in real-time during operation of the hard disk drive. Finally, in response to a predetermined departure of the runtime dynamic fluid response from the baseline dynamic fluid response, a protective response is initiated, such that data loss within the data storage system due to fluid bearing failure is prevented.

A static charge neutralizer for a moving component of an apparatus includes a plurality of filaments on a conductive strip, with tips of the filaments disposed adjacent but spaced from the moving component. The filaments induce ionization in the presence of an electrical field from the statically charged surface of the moving component.

A floating type wave power generation system is characterized in that the system consists of eight sets of lever-type floating bodies and a hydraulic energy accumulation converter with the hydraulic pump function. On a floating workbench 7, eight sets of levers 2 and a floating body 1 are connected through supporting hinge bearers 10 and 11; in this way, the highly undulating displacement caused by waves can be converted to relatively lesser displacement of a piston rod 4, and the minor force that the floating body bears can be converted through the lever to the major force on the piston rod. The piston rod drives a hydraulic tank 3 to switch and transmit the hydraulic energy through a connecting oil pipe5, a high-pressure oil pipe6, a hydraulic oil tank and four no-return valves of each set to a hydraulic motor in a hydraulic power generation control chamber 9; in this way the generator is driven to work. The present system can absorb, convert and accumulate the intermittent unstable wave energy in a highly effective way and can buffer the destructive effect of waves. The floating platform can be suitable to different marine space by adjusting the length of an anchor chain 8. And in various sea conditions, kinetic energy and potential energy possessed by waves in the sea surface can be converted and accumulated as hydraulic mechanical energy by utilization of the wave drop; thus the generator is driven to unremittingly provide electric power.

The invention relates to the Internet application technology field, and especially relates to an NAT (Network Address Translation) flow identification method based on a transmission layer flow characteristic in Internet application. The method comprises the following steps: acquiring a data packet which goes through an NAT device as training data; learning a classifier in the training data; sending all subsequent acquired data packets which go through the NAT device to the classifier; according to a characteristic of a data flow of the sending data packets, distinguishing an NAT flow from a non NAT flow by the classifier. The NAT flow identification method is independent of an operation system or a passive identification method of any special field, has a wide application range and is noteasy to fail. Through carrying out characteristic extraction and characteristic selection on a network flow, an optimal characteristic subset of carrying out NAT identification is effectively screened out. According to the screened optimal characteristic subset, data is divided into different clusters through a cluster algorithm, an application type of a cluster is determined by utilizing a few labeled data, and the NAT identification is realized.

The invention discloses a three-phase LCL type grid-connected inverter control system based on pole assignment, and the grid-connected inverter control system restrains the influence of power grid impedance on a three-phase LCL type grid-connected inverter, can effectively solve the problem that a grid-connected system is instable due to the power grid impedance and can be used for current control over the grid-connected inverter. A grid-connected control method not only can achieve system stability and high-quality grid connection under the condition of a weak grid, but also avoids the complex design of a current controller, coordinate rotation transformation and decoupling control. Meanwhile, the grid-connected control method can automatically adjust grid-connected current reference values to achieve independent control over reactive power according to given signals of externally-set reactive power. Therefore, the grid-connected control method is more suitable for controlling the photovoltaic power station grid-connected inverter which is connected into the weak grid through a long-distance power transmission line.

A system for promoting physical activity includes at least two cameras which capture images of an object and generate image signals indicative of the captured images. A processor in communication with the cameras receives the image signals from the cameras and determines, based at least on part upon the image signals, when and in what position the object impacts a surface. The processor generates, based at least in part upon the determination of when and in what position the object impacts the surface, feedback signals indicative of feedback to be provided to a user of the system. A projector in communication with the processor receives the feedback signals and, based at least in part upon the feedback signals, displaying visual feedback to the user on the surface.

The invention discloses a multi-mode electromagnetic energy-regenerative vehicle active suspension actuator. The multi-mode electromagnetic energy-regenerative vehicle active suspension actuator comprises an actuator main body and an actuator controller, wherein the actuator main body comprises a piston cylinder, a permanent magnet linear motor module, an adjustable damping vibration absorber module, an actuator upper end cover and a lower lifting lug. The permanent magnet linear motor module comprises a secondary piston rod, a linear motor upper end cover, a linear motor lower end cover, a plurality of silicon steel sheets, a plurality of primary coils and a permanent magnet; the adjustable damping vibration absorber module comprises a vibration absorber piston rod, a sleeve, an upper lifting lug, a sealing separation plate, a big piston, a small piston, a damping liquid passage and a proportional electromagnetic valve; and an input end of the actuator controller is connected with an acceleration sensor, a sprung mass speed sensor and an unsprung mass speed sensor. The invention further discloses a control method for the multi-mode electromagnetic energy-regenerative vehicle active suspension actuator. The invention is advantaged in that the energy-regenerative efficiency of the multi-mode electromagnetic energy-regenerative vehicle active suspension actuator is high, the service life of a vehicle-mounted storage battery can be effectively prolonged and an active suspension is in an optimal vibration absorbing state.

The invention relates to a method for highly efficient desulfurization and denitrification of flue gas and materials used. The main material is at least one of 50-99wt% calcium hydroxide, calcium carbonate, magnesium hydroxide, magnesium carbonate, sodium carbonate or sodium bicarbonate, Auxiliary material oxidizing agent: 1-50wt%. 0.1-10wt% binder can also be added. The desulfurization principle of the high-efficiency desulfurization and denitrification material provided by the invention is to oxidize sulfur dioxide into sulfur trioxide and then perform desulfurization reaction to generate calcium sulfate or other sulfate radical compounds. The compound no longer needs secondary treatment and is harmless to the environment, so The method can fundamentally eliminate the discharge of subsequent pollutants from flue gas desulfurization, and is environmentally friendly.

The invention discloses a plate edge cutting machine, which belongs to the field of plate processing machinery. The plate edge cutting machine has the technical scheme that the plate edge cutting machine comprises a plate conveying machine, a plate falling machine, a longitudinal edge cutting machine, a horizontal edge cutting machine and a control system, wherein the tail part of the plate conveying machine is connected with the head part of the plate falling machine, the longitudinal edge cutting machine is connected with the plate falling machine, the other end of the longitudinal edge cutting machine is vertically connected with the horizontal edge cutting machine, the control system is respectively connected with the plate conveying machine, the plate falling machine, the longitudinal edge cutting machine and the horizontal edge cutting machine in a control mode, the plate conveying machine comprises an elevator I, a plate conveying machine rack and a positioning platform, and a push head is fixedly arranged above the plate conveying machine rack; and the push head comprises a sliding plate and a positioning and connecting device, the sliding plate is provided with a glare shield and a hook plate, and a plate propping air cylinder is arranged at the right side of the plate conveying machine rack. The invention provides the plate edge cutting machine which has better entire machine performance and higher automation degree, and is mainly used for cutting rough edges of plates.

The invention discloses a scanning method for searching a maximal power point of a solar energy photovoltaic panel, which comprises the following steps of: (1) determining a power region needing scanning according to a solar energy photovoltaic power and voltage characteristic curve and determining a voltage range (A-B) needing scanning according to the power region; (2) determining two golden partition points (X1and X2) in the voltage range (A-B) needing scanning and calculating practical powers corresponding to the two golden partition points; (3) determining the voltage range of next scanning; (4) determining a new golden partition point in anew scanning voltage range, calculating the power corresponding to the new golden partition point and turning to the step (3), and repeating such the process till the maximal power point is found out; and (5) after the maximal power point is found out, tracing the maximal power point. The method can find out the maximal power point in short time and reduce energy loss.

The invention discloses an integral underground comprehensive pipe rack, and various types of municipal pipelines of running water, electric power and telecommunication are paved in a tunnel type underground comprehensive pipe rack. The integral underground comprehensive pipe rack at least comprises a first underground layer close to the ground and a second negative layer relatively far away from the ground, wherein a feed opening exposed from the ground is processed on the first underground layer, an electric shutter used for ventilating and discharging smoke is arranged on the feed opening, a movable inclined ladder used for conveniently passing in and out the first underground layer is arranged at the feed opening, the integral underground comprehensive pipe rack further comprises a soleplate serving as the first underground layer and an isolating laminate serving as a head plate of the second negative layer, and a through hole serving as an air inlet and a wire pass hole is formed on the isolating laminate. According to the integral underground comprehensive pipe rack disclosed by the invention, the integral structure of the air inlet, the feed opening and the personnel entry and exit is adopted, so that the number of the ground buildings and the occupation area are reduced, and the integral underground comprehensive pipe rack also has the advantages of energy conservation, convenience and safety, etc.

A multi-layer cavity-type aeration for expansion protection mechanism relates to an aeration for expansion protection mechanism, which aims at solving the problems that a monolayer protection screen can not effectively avoid the damage caused by the collision from the space chippy fraction, and a mechanism-typed expansion protection mechanism has low folding efficiency, low expansion reliability and a small volume after expansion. Parts of the periphery of the adjacent two protection screens cling together to form a cavity-type aeration for expansion protection screen to be rigidified, which is connected with an aeration supporting frame to be rigidified; a main inflation pipe is arranged in the cavity-type aeration for expansion protection screen to be rigidified and communicated with an air-discharging pipe; the lower end of the aeration supporting frame to be rigidified is provided with an aeration supporting pipe to be rigidified, which is communicated with the inflation pipe of a supporting pipe; two ends of an aeration bent pipe are communicated with an aeration pipe to be rigidified and the aeration supporting pipe to be rigidified. The invention can avoid the damage caused by the collision from the space chippy fraction, and has the advantages of high folding efficiency, high expansion reliability and a large volume after expansion.

The invention discloses automatic sheet fetching sheet fetching and stacking equipment of a photovoltaic thin glass production line. The automatic sheet fetching sheet fetching and stacking equipment of the photovoltaic thin glass production line comprises a suction cup rack, a landing gear, a roll-over rack and a moving device. The roll-over rack can be arranged on the moving device in a rolling over mode, the landing gear can be arranged on the roll-over rack in a lifting mode, the suction cup rack is arranged on the landing gear, and the top of the suction cup rack is provided with a sucker cup. According to the equipment, the suction cup rack, the landing gear, the roll-over rack and the moving device can conduct sheet fetching on the photovoltaic glass from the bottom, and movement is convenient, roll-over sheet fetching and stacking is conducted, so that the sheet fetching sheet fetching and stacking function is reliably achieved.

The invention discloses an austenitic stainless steel cleaning and passivating agent. The austenitic stainless steel cleaning and passivating agent is composed of, by mass, 30%-40% of citric acid, 0.1%-1% of ethylene diamine tetraacetic acid disodium, 1%-5% of 1-hydroxyethylidene-1,1-diphosphonic acid (HEDP), 3%-8% of glycollic acid, 3%-8% of phosphoric acid, 0.1%-2% of a non-ionic surface activeagent, 0.5%-3% of 322H, 0.5%-1% of sodium dodecylbenzenesulfonate, 0%-0.5% of yttrium nitrate, 0.1%-1% of corrosion inhibitor and the balance water. The prepared degreasing, rust removing and passivating agent has the characteristics of being environment-friendly, free of pungent smell and free of toxicity, harm to people and the environment can be remarkably reduced, and the production cost is effectively reduced.

An electric brake device comprises a caliper holding braking members and having an electric motor attached thereto, a reduction mechanism for transmitting an input rotation of one input element thereof from the electric motor to two output elements thereof at reduced speeds, a rotation-linear motion converting mechanism for converting the rotation of one of the output elements into a linear motion of one of the braking members, and a thrust force support member connected to the other output element and screw-engaged with the caliper, wherein the rotation-linear motion converting mechanism is supported by the thrust force support member to be movable together in a thrust direction and is provided with rotation limiting portions for limiting the rotation in a reverse direction of the one output element to a predetermined range, and wherein the thrust force support member is set to be greater in resistance to operation than the rotation-linear motion converting mechanism.

The invention relates to the field of building construction equipment, in particular to a pipe welding device for building construction, comprising a T-shaped frame, a synchronous moving device, fixing devices, clamping devices, positioning devices, trimming devices and a welding device, wherein the synchronous moving device is arranged on the T-shaped frame, the fixing devices are arranged on both sides of the T-shaped frame and are connected with the synchronous moving device, the clamping devices are arranged on both sides of a beam guide rail, the clamping devices are connected with the fixing devices, and the fixing devices move to drive the clamping devices along the beam guide rail to do synchronized motion, the positioning devices are disposed on the sides of the two clamping devices near columns, the trimming devices are disposed on the sides of the clamping devices near the columns, and the welding device is installed above the middle of the beam guide rail. The invention canrealize the automatic welding of the pipe, realize the automatic alignment of the pipe welding part, can prevent the construction pipe material from being broken at the welded part during the rotation process, effectively reduce the labor intensity of the construction worker, and ensure the construction progress and the construction quality.

The invention relates to a konjac breath-refreshing cigarette holder filter core and a preparation method thereof. The preparation method comprises steps of preparing konjac glucomannan alkaline aqueous solution, preparing konjac glucomannan emulsion, preparing konjac glucomannan gel microspheres, drying konjac glucomannan gel microspheres, preparing mint konjac glucomannan gel microspheres, preparing medicine-carrying konjac glucomannan gel microspheres, preparing konjac fibers and preparing a filter core. The konjac breath-refreshing cigarette holder filter core takes konjac as the main raw material, the konjac has effective fiber plasticity, adsorbability and slow-release property, the amount of toxic substance reaching the oral cavity can be reduced, the case that after a person smokes, the teeth become yellow can be avoided; trace and slow-releasing medicine is contained in the filter core, the medicine effect is guaranteed; all the materials are very environmentally-friendly, and can be degraded in the air easily, are nonhazardous and do not pollute the environment; and the smoker can feel refreshed, the nasal cavity is not blocked, and the mental state of the smoker is better.

The invention provides a network speed measurement method used for measuring the network connection speed between a client side and a server. The method includes the following steps that a Socket connection is built on the client side, a request for connecting an 80 port of the server is sent to the server through the Socket connection, and after the request is automatically permitted by the server, the client side is in communication connection with the server through a three-way handshake mechanism based on a TCP/IP protocol; the client side sends a test data package to the server and starts timing at the moment; the client side outputs a corresponding speed measurement result according to whether a feedback data package returned by the server and timing duration are received or not, wherein the timing duration lasts to the time when the feedback data package is received. The invention further provides a network speed measurement system. The network speed measurement method and system have the advantages of being high in test success rate and not prone to failing.

The present invention relates to a method and an apparatus for hard disk power failure protection. The method includes receiving power from a battery through a battery power input wire when the hard disk drive is out of power, supplying battery power to the cache of the hard disk drive, and performing data protection for the cache. A wire of the hard disk interface (HDI) may be set as the battery power input wire, and the battery power voltage is less than or equal to the standard voltage of the wire used as the battery power input wire. The method can ensure cache data security and integrity with low cost and maintain compatibility with existing interface configurations.

The invention discloses a tank truck lateral overturning early warning system based on a GIS. The system comprises a mobile GIS module, a vehicle information module, a lateral overturning state judgment module, an early warning module and an active speed control module. In the system, the mobile GIS module obtains vehicle position information and obtains information of a bend and a road in the heading direction through a geographic information system; the vehicle information module stores vehicle parameter information and obtains in-tank liquid information in real time; the lateral overturningstate judgment module combines the information of the two above modules to establish a calculation model of the lateral overturning critical speed of a tank truck when the tank truck travels on the bend, compares the current traveling speed of the vehicle with the minimum lateral overturning critical speed and judges whether the vehicle can be overturned or not according to a comparison result; the early warning module warns a driver to control the vehicle speed in the modes of voice and the like when the vehicle is in lateral overturning danger; and the active speed control module reduces the vehicle speed through control of an engine throttle valve and a brake device under an emergency. The system guarantees the safety of the driver and the vehicle.

The invention provides an electric energy quality complex disturbance recognition method for lowering noise through two-dimensional morphology. The method is characterized by including the steps of electric energy quality disturbance signal collection, multi-resolution fast S conversion on disturbance signals, two-dimensional morphology noise reduction, disturbance signal characteristic extraction, sample classification through design of a decision tree classifier and the like. The method has the advantages of being scientific, reasonable, easy and convenient to implement, good in real-time performance, capable of meeting the on-site application requirement, high in noise immunity and high in recognition accuracy rate, and training is not needed.