193 results about "Rate regulation" patented technology

A fully meshed telecommunications network based on an optical core transport network having a plurality of optical nodes is described. An electronic edge switch is connected to an optical node and dedicated channels are established between all the possible pairs of electronic edge switches through their associated optical nodes and the optical core transport network. Connection paths are set up using a channel or channels between a pair of electronic edge switches which perform major functions concerning connection routes, including rate regulation, path establishment, etc.

The invention discloses methods and apparatus for regulating the transfer of data bursts across a data network comprising electronic edge nodes interconnected by fast-switching optical core nodes. To facilitate switching at an electronic edge node, data bursts are organized into data segments of equal size. A data segment may include null data in addition to information bits. The null data are removed at the output of an edge node and the information data is collated into bursts, each carrying only information bits in addition to a header necessary for downstream processing. To ensure loss-free transfer of bursts from the edge to the core, burst transfer permits are generated at controllers of the optical core and sent to respective edge nodes based on flow-rate-allocation requests. Null-padding is not visible outside the edge nodes and only the information content is subject to transfer rate regulation to ensure high efficiency and high service quality.

The invention discloses a control method of a multi-split system. The method includes the following steps that S1, the indoor environment temperature T1 and the corresponding user set temperature Ts of each indoor unit are detected; S2, the difference value delta T between the indoor environment temperature T1 and the user set temperature Ts of each indoor unit is calculated; S3, the difference value delta T of each indoor unit is compared with the reference value, meanwhile the operation mode of each indoor unit is detected, and the opening of a corresponding flow rate regulating device is adjusted according to the comparison result in the corresponding operation mode. The control method of the multi-split system can meet different refrigerant amount requirements caused by different indoor environment temperatures T1 and user set temperatures Ts of different indoor units, meanwhile the indoor environment temperatures T1 and the user set temperatures Ts are directly used as calculation factors to calculate the opening of the flow rate regulation device, and it is guaranteed that refrigerant is distributed more accurately and reasonably.

A swelling element rate regulation technique and product features an outer coating on a core of an element. The core is reactive to hydrocarbons or water depending on how it is configured. The surrounding coating is preferably formed of fine ground particles of a non-swelling polymer mixed in a solvent such as methyl-ethyl-ketone that is applied in a thin layer to the core exterior. This uncured outer layer is then contacted by a patterned surface. The patterned surface is pressed firmly against the uncured polymer/solvent mixture and transfers an inverse of the pattern to the surface of the coating. As pressure is applied, heat may also be applied to cure the coating. The resulting pattern is designed such that openings in the coating are created that regulate infiltration of water or other fluids through it and, as a result, the rate of swelling in the wellbore. Swell rate in governed in part by the ratio of the exposed area of the swelling compound to the total volume of the swelling compound. The smaller this ratio, the slower the rate of swell. The pattern created in the non-swelling layer may also provide limited mechanical restraint of the swelling element, further slowing the process.

In an exhaust gas purification apparatus for an internal combustion engine (1) equipped with independent exhaust passages (2a, 2b) provided one for each cylinder group (1a, 1b) with a catalyst (3a, 3b) having a NOx trapping ability being arranged in each exhaust passage, the present invention is intended to provide a technique that can independently control the flow rates of exhaust gases flowing into the respective catalysts. To this end, the exhaust gas purification apparatus according to the present invention provides a communication passage (4) connecting mutually portions of said exhaust passages (2a, 2b) at upstream of said catalysts (3a, 3b), an upstream side switching valve (5) openning and closing said upstream side communication passage (4), a plurality of flow rate regulation valves (6a, 6b) being arranged at downstream of connecting portions of said exhaust passages with said upstream side communication passage, respectively, and a control section (9) controlling said upstream side switching valve (5) and said respective flow rate regulation valves (6a, 6b) in accordance with the states of said respective catalysts (3a, 3b). When the NOx trapping ability of one of the plurality of catalysts (3a, 3b) is regenerated, the control section (9) opens the upstream side switching valve (5), fully closes one flow rate regulation valve (6a, 6b) in one of the exhaust passages (2a, 2b) in which the one catalyst (3a, 3b) is arranged, and operates a reducing agent addition valve (7a, 7b) in such a manner that the reducing agent arrives at the one catalyst (3a, 3b) when the actual degree of opening of the one flow rate regulation valve (6a, 6b) becomes fully closed.

A valve (1), particularly for an aerosol container, includes, inside a valve body (2), an inlet passage (4) communicating with the container and an outlet passage (10), a first elastic return (16) for urging the valve (1) into the closed position, and a regulator for regulating the product outlet flow rate, which includes a second elastic return (14) for supplying a set-point pressure for the regulator. The second elastic return (14) is arranged in a compartment (12) of the valve body (2) isolated from the product, the pressure inside the compartment (12) being equal to atmospheric pressure.

A tank system of the invention with multiple tanks makes a joint flow of a fluid released from the multiple tanks and supplies the joint flow to a downstream device, which is located downstream of the multiple tanks. The tank system includes: primary pressure measurement modules that individually measure internal pressures of the multiple tanks as primary pressures; a secondary pressure measurement module that measures a pressure of the joint flow of the fluid as a secondary pressure; flow rate regulation modules that individually regulate release flow rates of the fluid to be released from the multiple tanks; and a pressure control module that estimates a supply flow rate to be supplied to the downstream device from the measured secondary pressure, and then sets an allocation of the supply flow rate of the fluid to be released from each of the multiple tanks corresponding to the measured primary pressure with regard to the tank. This arrangement ensures adequate regulation of the release flow rates from the multiple tanks.

The invention discloses an air conditioning unit and a control method and a control device thereof. The method includes the following steps: according to total number of air-outlet air valves of the air conditioning unit and total regulation capacity of the air conditioning unit, computing rated regulation capacity distributed to each air-outlet air valve; according to the number of opened air-outlet air valves, computing and controlling opening air levels of an indoor unit; according to set temperature and the rated regulation capacity of an area where each air-outlet air valve is located, computing actual regulation capacity of each air-outlet air valve; summing the actual regulation capacities of all the air-outlet air valves to obtain total regulation capacity needed by the air conditioning unit, and controlling a compressor to run according to the total regulation capacity. One air-outlet air valve and a temperature controller are arranged in each regulation area independently, the opening air levels are controlled according to the number of the actually-opened air-outlet air valves, the actual regulation capacities of all the areas are integrated to control the compressor to run as required, multiple regulation areas are controlled centralizedly, and comfort and energy conservation requirements are met.

The invention relates to an underground oil-water separating, testing and regulating technology, and discloses a high-flow-rate underground oil-water separation and annular space testing and regulating system, in particular to a system combining an annular space testing and regulating device with a high-flow-rate underground oil-water separation tubular column. The system is divided into a passage for enabling producing liquid on a liquid producing layer to enter an oil-water separator, a passage for reinjecting separated low-oil-content producing waterinto an annular spaceand a passage for lifting high-oil-content producing liquid by the high-flow-rate underground oil-water separation tubular column. The annular space testing and regulating device regulates the split ratio through monitoring the pressure and the flow rate of low-oil-content sewage in the annular space reinjection passage and performing reinjection flow rate regulation, and the stability of the underground oil-water separation system is ensured. The high-flow-rate underground oil-water separation and annular space testing and regulating system has the advantages that the stability of the high-flow-rate underground oil-water separation system can be ensured; the oil-water separation effect is improved; the precision of the testing and regulating system is high; the accurate producing liquid flow rate and rejection flow rate data can be provided for the oil reservoir scheme design; the scheme design accuracy is ensured; the system composition structure is simple; and the requirement of the annular space testing and regulating flow rate measuring range being 50 m<3>/d to 3,000 m<3>/d can be met.

Provided is a shaping material supply device for use in a three-dimensional shaping apparatus, which includes a first flow path through which a shaping material flows, a nozzle that communicates with the first flow path and discharges the shaping material, and a flow rate regulation mechanism that includes a butterfly valve provided in the first flow path.

The invention discloses a constant-temperature-type gas water heater control system and with a rapid and accurate temperature-regulating characteristic and a control method. The control system is characterized by comprising a singlechip, an ignition control loop, a flame detection loop, a fan rotation speed control loop, a gas main valve control loop, a gas proportional valve control loop, a water flow pulse signal input loop, a water temperature signal input loop of cold-hot water temperature, a fan rotation speed feedback loop, a temperature setting loop, a temperature display loop and the like, wherein the water flow pulse signal input loop, the water temperature signal input loop of cold-hot water temperature and the temperature setting loop respectively transmit the water flow rate, the actual temperatures of inlet and outlet water and the set temperature to the singlechip in real time; and a gas main valve is used for the opening and closing control of a gas passageway, a gas proportional valve is used for achieving the dual closing of the gas passageway or the flow rate regulation and temperature control, and a fan control loop is used for achieving the air volume regulation function through controlling the rotation speed of a motor. The system and the method provided by the invention aim to overcome the defect that the existing gas water heater control system and the method can not combine the temperature regulation accuracy and response speed simultaneously, and aim to provide the control system and the method with high temperature regulation accuracy and rapid temperature response.

The invention discloses a PDCCH channel encoding rate regulation method and an evolution base station, relating to the field of mobile communication. The method comprises the following steps: obtaining the radio link quality information of user equipment; according to the radio link quality information of user equipment, determining a link quality regulation zone to which the radio link quality ofthe user equipment belongs; and according to the link quality regulation zone, regulating the PDCCH channel encoding rate occupied by the user equipment. The base station comprises an acquisition module and a regulation module so as to reasonably choose the PDCCH channel encoding rate according to the practical condition of the current user equipment link quality, thus improving the utilization efficiency of controlling resource. Specifically, the embodiment of the invention improves the efficiency for the PDCCH channel to transmit scheduling Information to a user, thus improving the user number simultaneously scheduled by the same TTI and reducing the waiting time delay of user data on the sending side.

The invention relates to a water-cooling fly ash sampling device of a circulating fluid bed boiler, which comprises a sampling gun (17). The water-cooling fly ash sampling device of the circulating fluid bed boiler has the structure that the front end of a sampling tube (7) is connected with a sampling head (2), the sampling head (2) is provided with a fume inlet and is communicated with a tube cavity of the sampling tube (7), the back end of the sampling tube (7) is provided with a sampling barrel (12) used for holding sampled fly ash and a sampling connection tube (13), a back tube (16) is penetrated into the sampling tube, and the back end of the back tube (16) is connected with a pressure difference measurement device. The water-cooling fly ash sampling device of the circulating fluidbed boiler is characterized in that a water-cooling sleeve tube used for the passing of cooling water is sleeved outside of the sampling tube (7), and an inlet and an outlet of the cooling water of the sampling tube (7) are arranged at the back end of the water-cooling sleeve tube. Because the water-cooling tube is arranged outside the sampling tube of the sampling gun, the sampling device can work under a fume environment of 1100 DEG C and can sample the fly ash at constant speed aiming at different boiler loads and fume flow speeds and temperatures; the sampling head at the head part of thesampling gun can select the fly ash according to the actual fly ash concentration, an air exhaust blower and a flow rate regulation device which are arranged at the tail part of the sampling gun can regulate the flow rate, and approximately constant-speed sampling is realized.

An airflow rate regulating device which is installed in a vacuum unit that collects contaminants from a processing station in a controlled space. This device enables a vacuum unit to maintain a continuous suction of contaminant particles from a processing station when there are pressure variations in the controlled space. The airflow rate regulating device is mounted in a suitable cabinet 88 and connected to a vacuum source. The airflow rate regulating device has a casing divided into two chambers separated by a wall having an passageway through which air flows from one chamber to the next. Each chamber features an airflow rate regulation valve comprising a movable member extending across the flow of air passing through the casing, that can be adjusted using counterweights. When a pressure disturbance occurs in the controlled room from a door opening, or when a hose leading the contaminant source is disconnected, the airflow rate regulation valves react to maintain sufficient vacuum pressure at the contaminants source. Since the airflow rate regulating device is mechanical, its response time to pressure is nearly instantaneous.

The invention discloses a method and a device for regulating a baud rate. The method comprises the following steps of: receiving data which are transmitted by a universal asynchronous serial transmitter in a preset first baud rate; checking the data which are received currently; when determining that a data receiving error exists according to a checking result, regulating a data receiving baud rate according to a preset baud rate regulation threshold, receiving the data which are transmitted by the universal asynchronous serial transmitter in a regulated baud rate, and returning a checking result of the received data; and when determining that the data receiving error does not exist according to the checking result, receiving the data in a currently receiving data baud rate which is used as the first baud rate. By the method, when detecting that the data receiving error exists in a receiver, the baud rate for receiving data of the receiver can be automatically regulated to ensure that the baud rates of the receiver and the transmitter are maintained uniformly, so that normal data communication can be ensured.

The system consists of training databank, question-making module, read-following broadcast module and pronunciation speed rate regulation module. The method includes the follows: parameter is initialized first, then training specimen is started to play broad cast task; in course of broadcasting, the user carrys on real-following and to record the real-following pronunciation data of the user; the training specimen and the read-following pronunciation data are broad casted separately and finally the pronunciation speed rate parameter is regulated according to times of training specimen playing till broadcast task of the training specimen is finished.