954results about How to "Reduced settling time" patented technology

A storage mamagement method of embedded database,includes that: (1) the storage strategy of data in the memory is that: if logic structure accords with physical structure, the structure is into a divided system area, a main storage database area, a user working area, a log area and a preformed area; the storage strategy of data in the external memory is that: logic structure is divided into a database table, a segment and a database block; physical structure includes a physical file and a physical block; (2) the physical file organization of database is that: a data dictionary is placed at the heading, a user table since then; (3) the memory management of data dictionaryin the external memory is that: the described information of physical file is stored in the file header, denotative definition kind and attribute definition kind adopt a three section type storage form; data dictionary adopt a page type memory management method in the memory; (4) a permanent memory data is stored using T tree and a a permanent external memory data is stored using B+ tree; data and its index are managed using a extended segment memory management method. The invention improves the utilization rate of memory space, and accelerate the speed of data to access.

Methods and systems of assembling and making laminated electro-mechanical system (LEMS) switches are described. A plurality of structural layers are formed that include at least two structural layers that each include a flexible member. The plurality of structural layers are stacked and aligned into a stack, to form at least one switch. Each structural layer in the stack is attached to an adjacent structural layer of the stack. When the formed switch is in an “on” state, the first flexible member is in contact with the second flexible member. When making contact with the second flexible member, the second flexible member flexes in response. In a further aspect, three flexible members may be present. When the switch is in an “on” state, the first flexible member is in contact with the second and third flexible members. When making contact with the second and third flexible members, the second and third flexible members flex in response.

The invention discloses a rolling bearing fault diagnosis method based on improved variational model decomposition and an extreme learning machine. The method comprises: vibration signals of a rollingbearing under different types of faults are collected, the vibration signals are filtered by means of maximum correlation kurtosis deconvolution, parameter optimization is carried out on the maximumcorrelation kurtosis deconvolution method by using a particle swarm algorithm, and an enveloped energy entropy after signal deconvolution is used as a fitness function; the mode number of variationalmodel decomposition is improved by an energy threshold and improved variational model decomposition of the filtered vibration signals is realized to obtain mode matrixes of the corresponding vibrationsignals; singular value decomposition is carried out on the mode matrixes to obtain a singular value vector and a rolling bearing fault feature set is constructed; and the fault feature set is trained by using an extreme learning machine and a rolling bearing fault diagnosis model is established. Therefore, stable feature extraction of the complex vibration signal of the rolling bearing is realized, so that the diagnostic accuracy is improved.

The invention relates to a dust fall agent for water mist dust fall. 0.06-0.2wt% of wetting agent permeation assistant is added to water, wherein the wetting permeation assistant comprises anionic surfactant, or cationic surfactant, or zwitterionic surfactant, or non-ionic surfactant. Because in the dust fall agent of the invention, 0.06-0.2wt% of wetting agent permeation assistant is added to water, thus the surface tension of the water can be reduced, the contact capacity of the water with dust particles is promoted, and solid materials can be soaked by water more easily through the wetting agent permeation assistant, thereby accelerating the wetting permeation velocity of water to the dust particles, accelerating the fall velocity of the dust particles, and reducing the fall time of the dust particles. Thus, the invention reduces the operation time and the operation cost, protects the health and safety of operation personnel, and can be widely applied to water spray, water sprinkling, dust fall and dust suppression of mines, tunnels or roads.

The invention discloses a mixed slag smelting reduction production and thermal refining method, and belongs to the field of non-blast furnace iron smelting and comprehensive utilization of resources. The method comprises the following steps: 1) an iron-contained material and a reducing agent are added in mixed slag of blast furnace slag and molten steel slag for heating to reach a molten state; and oxide gas is sprayed for iron smelting by smelting reduction to treat most iron-contained material; and 2) an iron component, a calcium silicon component and a phosphorus component in the mixed slag are separated and recovered according to a reaction device. After smelting reduction, the reduced slag can serve as a cement additive, a cement regulator, a cement clinker or a cement clinker with high production additional value, so that the method realizes efficient comprehensive utilization of the resources, and is a new smelting reduction iron making method. The method uses smelting reduction of the mixed slag for production of pig iron or steel and phosphorus-enriched phases and thermal refining, is short in reaction time, high in metal recovery rate, low in production cost, high in raw material adaptability, high in handling quantity, environment-friendly and high in economic benefit, and can effectively achieve the goal of efficient recycling of metallurgic resources and heat energy.

A lithographic apparatus comprising a control system, such as a motion control system, is presented. The control system includes an actuator for effecting a movement of a moveable part and a feed-forward path from a setpoint input of the control system to the actuator. The control system further includes a feed-back loop, a feed-forward transfer function of the feed-forward path having a feed-forward transfer function part which is an inverse of a part of the actuator transfer function having a stable inverse, the actuator transfer function including a part having a stable inverse and a remainder potentially having an unstable inverse. The setpoint path includes a setpoint delay function, and the feed-forward transfer function further includes a second feed-forward transfer function part. A difference in delay between the setpoint delay function and the second feed-forward transfer function part is equal to a delay of the potentially unstable remainder of the actuator transfer function. Further, a method is described to find an optimal feed-forward controller directly on the basis of measured data.

The invention discloses a self-synchronizing method of point-to-point communication of UAV data chaining under time slot allocation system, which is based on MCS-51 serial singlechips, wherein, the method comprising fives steps of: initializing data chaining communication system, synchronously initializing, synchronously locking, self-adaptedly emitting TSA as well as desynchronizing and resynchronizing. The invention adopts the time slot allocation system to carry out data chaining communication, wherein, an onboard control station and a ground control station adopt the same communication device to complete the sending and the receiving of information under the same working frequency and different time points; adopts point-to-point communication based on equivalent theory, in the synchronously building process, the communication system of the onboard control station and the ground control station has equivalent position without difference between the main and the subsidiary; adopts the self-synchronizing method based on a synchronous head, which is superior to a external-synchronizing method taking GPS second pulse signal as assist on reliability and synchronizing time; and adopts self-adaptedly allocation strategy which emmits time slot based on the the amount of information content in data buffer, thereby, being caplbe of effectively reducing onboad energy consumption.

The invention discloses a self-adaptive autonomous emergency brake (AEB) control algorithm based on road adhesion. The self-adaptive autonomous emergency brake control algorithm based on the road adhesion predicates collision risk between a vehicle and a forward obstacle though obtaining forward obstacle information, information of the vehicle and a road adhesion coefficient and makes a final pre-warning and autonomous braking decision by taking control input of a driver into consideration so as to remind the driver of adopting forward collision avoidance control or avoid collision between the vehicle and the forward obstacle or reduce collision degree between the vehicle and the forward obstacle by using autonomous braking interference if necessary. According to the self-adaptive autonomous emergency brake control algorithm based on the road adhesion, on the premise of not changing the configuration of the existing vehicle-mounted sensor, the road adhesion coefficient is estimated in real time; the pre-warning and autonomous braking opportunity can be automatically adjusted in a safe distance model according to the road adhesion coefficient so that the forward collision avoidance safety on road surfaces with various road adhesion coefficients is ensured and false alarm or false brake interference is avoided; driving safety and good driving experience are both achieved; and during driver brake interference, the self-adaptive autonomous emergency brake control algorithm based on the road adhesion can apply necessary brake assistance according to the calculated collision risk.

An air flow regulator includes a damper (14) and an air cylinder (20) operatively connected with the damper (14) to adjust a damper setting. A pressure sensor (52) indicates a pneumatic pressure in the air cylinder (20). An air pressure regulator (42) is operatively connected with the air cylinder (20) to pressurize and exhaust the air cylinder (20) responsive to an electrical input (70). The air pressure regulator (42) includes a calibration table (64) associating steady state air cylinder pressure values with regulator shut-off pressure values. Responsive to the electrical input (70) updating a steady-state air cylinder pressure value, the air pressure regulator (42) pressurizes or exhausts the air cylinder (20) until the pressure sensor (52) indicates a pressure corresponding to a regulator shut-off pressure value associated in the calibration table (64) with the updated steady-state air cylinder pressure value, whereupon the air pressure regulator (42) ceases the pressurizing or exhausting.

The invention relates to a special clamp for support leg boring of a development machine. The special clamp comprises a clamp body, a plane bearing clamping device, a slope bearing clamping device, a side positioning device and a tail positioning device. The plane bearing clamping device and the side positioning device are installed on the clamp body, the slope bearing clamping device and the tail positioning device are located at the head and the tail of the clamp body respectively, contact portions between an inclined support plate of the slope bearing clamping device and an inclined lower plane of a to-be-processed workpiece of a support leg of the development machine are provided with four adjustable support points, and the position of each adjustable support point is provided with an adjustable bearing pin. The total number of bearing plates installed on the clamp body is 4, the bearing plates are divided into two groups, and each group of bearing plates are arranged in a shaped like a Chinese character ba. The problems that a positioning standard is difficult to determine in connecting hole boring processing at two ends of the support leg of the development machine and alignment is time-waving in processing are solved. Besides, after a first product is processed, alignment time can be saved in follow-up product processing, and the special clamp is simple in structure, high in positioning precision and convenient to operate.

The invention provides a catalytic oxidation-compound flocculation integrated treatment process which aims to solve the problem that organic comprehensive waste water is difficult to treat because the organic comprehensive waste water contains organic substances difficult to biologically degrade. The treatment process integrates catalytic oxidation, Fenton oxidation, compound flocculation, high-efficiency precipitation and other technical advantages; a high-efficiency catalyst is used to improve the treatment efficiency or biodegradability; and a compound flocculant is used as the core to simplify the treatment process and ensure the stable treatment effect, thereby achieving the catalytic oxidation-compound flocculation integration. The invention has the characteristics of concise technical line, high treatment efficiency and simple operation process.

The invention discloses an all-solid-state Marx generator with a saturable pulse transformer substituting for a gas switch. The all-solid-state Marx generator is used for solving the problems that existing Marx generators are high in charging voltage, non-synchronous in capacitor charging, short in gas switch life or high in magnetic switch saturable inductance, series are hard to increase and the like. The all-solid-state Marx generator is composed of the saturable pulse transformer SPT, Q-grade Marx capacitor and grounding inductor units and a load, the SPT is in an axial symmetric structure, Q-group secondary windings of the SPT serve as a magnetic switch, Q-grade Marx capacitor and grounding inductor units are evenly distributed on the outer circumference of the SPT and are connected with Q-group secondary windings. Each grade of the Q-grade Marx capacitor and grounding inductor units is composed of a Marx capacitor and a grounding inductor. The all-solid-state Marx generator has the advantages of being low in input charging voltage, short in series connection, synchronization and built-up time of the switch, high and repetitive in operation frequency, solid and long in service life, a magnetic core can be reset automatically, and all grades of capacitors are charged uniformly.

The invention discloses a method for mixed slag smelting reduction recycling and thermal refining, and belongs to the field of non-blast furnace iron making and comprehensive utilization of resources. With the method, pig iron or steel and a phosphorus-rich phase are recycled from mixed slag, and slag thermal refining is carried out. The method comprises the following steps that (1) blast furnace slag and molten steel slag are mixed; (2) gas blowing is carried out to carry out smelting reduction; and (3) separation and recycling are carried out. According to the method, blast furnace slag and the molten steel slag are mixed, then, oxidizing gas is blown to carry out molten reduction iron making, the iron in the mixed slag is recycled, phosphorus-rich phase recycling and slag thermal refining are achieved, and the reduced slag can serve as slag cement or a cement regulator or an additive in cement production or cement clinker, or be used for producing high-value-added cement clinker. The method for mixed slag smelting reduction recycling and thermal refining is short in reaction time, high in metal recycling rate, low in production cost, high in material adaptability, high in handling capacity, friendly to the environment, high in economic benefit, and capable of effectively achieving the purpose of high-efficiency recycling of metallurgical resources and thermal energy, and is a new smelting reduction technology.