116results about How to "Adjustable load" patented technology

A system for load control in an electrical power system is described, wherein one or more load-control devices are provided to control power delivered to electrical equipment. A remote power authority, such as a power company, government agency, or power transmission company sends one or more commands to the load-control devices to adjust loading on the electrical power system. In one embodiment, the power authority sends shutdown commands. In one embodiment, the power authority sends commands to tell the electric power device to operate in a relatively low-power mode. In one embodiment, the commands are time-limited, thereby allowing the electric power device system to resume normal operation after a specified period of time. In one embodiment, the commands include query commands to cause the control device to report operating characteristics (e.g., efficiency, time of operation, etc.) back to the power authority.

The invention discloses a device and a method for testing linear reciprocating sliding friction and abrasion; the device consists of a transducer, a workbench, a sample table, a dragging frame, a force sensor, a changeover switch, a counter, a locking device, a guideway, a baffle, a cable wire, a reducer, a peak value stabilizer, a control part and an auxiliary component; the equipment can automatically complete the abrasion test of an arranged period and can manually complete the test to friction coefficient. The testing method comprises the following steps of: leading the friction block and the sample to reciprocate to slide horizontally with constant pressure, obtaining an abrasion weight loss rate after abrading, keeping a certain positive pressure and leading the sliding block to move from stillness to uniform movement, thus obtaining the maximum static friction coefficient and the sliding friction coefficient. The device and the method can realize uniformly linear and reciprocating relative sliding abrasion in long unidirectional journey, test the maximum static friction coefficient between two bodies and the maximum static friction coefficient, the speed, the load and the adjustable journey with other materials, and can be widely applied to the detection of various samples of different materials and different structural forms.

The invention is related to a data transmission method in a telecommunication system. The method comprises determining the number of bit rate classes, setting bit rates for the bit rate classes, setting a maximum transmission power target, arranging resource requests into a queue, allocating resources according to the requests in the queue until the maximum power target is achieved.

A system for load control in an electrical power system is described, wherein one or more load-monitoring devices are provided to control power service delivered to a home or building. A remote power authority, such as a power company, government agency, or power transmission company sends one or more commands to the load-monitoring device to adjust loading on the electrical power system. In one embodiment, the power authority sends shutdown commands. In one embodiment, the power authority sends commands to tell the load-monitoring device to provide reduced power service. In one embodiment, the commands are time-limited, thereby allowing the electric power device system to resume normal operation after a specified period of time. In one embodiment, the commands include query commands to cause the control device to report operating characteristics (e.g., efficiency, time of operation, etc.) back to the power authority.

A system for load control in an electrical power system is described, wherein one or more load-limiting devices such as outlets and/or lighting sockets are provided to a home or building. The load-limiting devices conserve power and increase safety by not allowing a user to attach a device that draws excess power. Unlike circuit breakers and fuses, the load-limiting devices automatically resume normal operation when the excess load is removed. In one embodiment, the power authority sends commands to tell the load-monitoring device to provide reduced power service. In one embodiment, the commands are time-limited, thereby allowing the electric power device system to resume normal operation after a specified period of time. In one embodiment, the commands include query commands to cause the control device to report operating characteristics (e.g., efficiency, time of operation, etc.) back to the power authority.

The invention provides an apparatus for testing the fatigue life of a high-speed angular contact ball bearing. The apparatus tests the fatigue life of the angular contact ball bearing under the working condition of various rotary speeds and loads by adoption of a frequency converter to realize infinite variable speed of a high-frequency motor, adoption of a transmission shaft to drive the angular contact ball bearing to rotate at a high speed under certain pretightening force, and adoption of a weight to adjust and load the axial pretightening force. The apparatus overcomes the defects of complex structure, expensive price, trivial operation, large noise and so on of the prior apparatus for testing the fatigue life of the angular contact ball bearing, realizes zero transmission and lever loading, and has the advantages of superior high-speed performance, reliable test results, simple structure and low cost.

A method for managing connections using a dummy HTTP, the method comprising: upon receiving an HTTP request from a client, establishing, by a Web server, a connection to a Web application server to transmit the HTTP request to the Web application server over the connection; transmitting, by the Web server, an HTTP response received from the Web application server to the client; and continuing, by the Web server, the connection by exchanging a dummy HTTP request and a dummy HTTP response with the Web application server when a count of a duration time of the connection reaches a preset survival check time.

From the start of the engine to the detection of an engine speed peak, a control parameter (e.g., ignition timing) different from an air intake rate relating to an engine output is set to a value at which the engine output decreases than at an idling value. After detection of the peak, the control parameter is adjusted to the idling value.

The invention discloses a radiation heating and cooling integrated air conditioner in quick effect and changeable load. Load can be independently borne by an indoor machine or can be commonly borne by the indoor machine and a capillary tube, and the indoor temperature is regulated by mainly using the heat transmission modes of radiation and natural convection. A surface air cooler with larger surface area is provided when the load is independently borne by the indoor machine; and in the mode of commonly bearing the load, the indoor machine and the capillary tube are positioned in different return water supply loops, the water supply temperature of the indoor machine is different from that of the capillary tube, the temperature of water supplied to the indoor machine needs to be lower than that of water supplied to the capillary tube during the refrigerating in summer, and the temperature of water supplied to the indoor machine needs to be higher than that of water supplied to the capillary tube during the heating in winter. According to the radiation heating and cooling integrated air conditioner in quick effect and changeable load disclosed by the invention, the characteristics of quiet system, high heat comfort degree, energy saving, invisibility, attractive performance and the like of a traditional radiation air conditioner are reserved, the effect is rapid, the load can be adjusted, the indoor environment in higher standard can be built, and the radiation heating and cooling integrated air conditioner has larger developing space in high-grade buildings.

The invention discloses a method for preparing a nitrogen doped carbon loaded cobaltosic oxide electrode material. The method comprises the following steps: firstly, uniformly mixing a cobalt source with an ionic liquid; putting into a tubular furnace, heating to 100-400 DEG C in the presence of argon, keeping the temperature for 10-60 minutes, continuously heating to 600-1600 DEG C, keeping the temperature for 60-360 minutes, and cooling to the room temperature; further heating to 200-700 DEG C in the presence of air, keeping the temperature for 20-120 minutes, and cooling, thereby obtaining the nitrogen doped carbon loaded cobaltosic oxide electrode material. The method is simple in preparation process, cobaltosic oxide granules are small in size and good in dispersity, and the content of nitrogen and the loading amount of the cobaltosic oxide in a carbon matrix can be adjusted. The nitrogen doped carbon matrix is good in conductivity, and a volume effect of the cobaltosic oxide granules in the charge and discharge process can be effectively prevented, so that the prepared nitrogen doped carbon loaded cobaltosic oxide electrode material is high in lithium storage capacity and good in circulation property when being used as a lithium ion battery cathode material.

The invention relates to a battery charging control circuit for controlling a charging of a rechargeable battery by means of a charging component. The battery charging control circuit comprises a switching element, a control component and an energy storage component. The switching element is adapted to connect a battery to a charging component and to disconnect the battery from the charging component. The control component is adapted to control the switching element. The energy storage component is arranged to be loaded by the charging component and to provide a voltage across the energy storage component as a supply voltage to the control component. The invention relates equally to a electronic device comprising such a circuit and to a method of providing a power supply to a control component of such a circuit.

The invention discloses a 3D printed PCL-Mg bone tissue engineering scaffold and a preparation method thereof. The 3D printed PCL-Mg bone tissue engineering scaffold is prepared from poly-epsilon-caprolactone PCL and magnesium chloride as raw materials through a 3D printing technology. After being implanted into the human body, PCL as a bioabsorbable material is gradually degraded and releases Mgto promote osteochondral generation. The porous structure of the scaffold can induce bone ingrowth and finally repair bone defects, tumors and bone defects after infection. The 3D printed PCL-Mg bonetissue engineering scaffold has the advantages of simple and reliable structure, controllable shape and microstructure, reliable mechanical property, controllable ion release performance, convenient implantation, small trauma and low cost.

This invention provides a modularized ocean energy generating device including an outer frame, at least four inner frames, and at least four hydraulic generator modules. The at least four inner frames are detachably disposed in the outer frame. The at least four hydraulic generator modules are disposed in the at least four inner frames, respectively. The modularized ocean energy generating device in the invention includes at least four built-in modules, and the hydraulic generator modules can be distributed in an array. By the detachable inner frames and the outer frame, modularized assembly and installation can be realized, thereby greatly reducing preserving and installing costs.

The present invention relates to the field of communications technologies, and in particular to a method, a base station and a system for adjusting a cell wireless configuration parameter. The method includes: obtaining system performance information of an adjustment participating cell and a peripheral cell of the adjustment participating cell under different wireless-configuration-related information; and adjusting a wireless configuration parameter of the adjustment participating cell according to the system performance information of the adjustment participating cell and the peripheral cell of the adjustment participating cell. According to the technical solutions provided in the embodiments of the present invention, by analyzing the system performance information of the adjustment participating cell and the system performance information of the peripheral cell of the adjustment participating cell at the adjustment participating cell, an adjustment work load can be decentralized, and a coverage adjustment of the entire system is accelerated.

The invention discloses a sulfur-doped three-dimensional porous graphene/sulfur composite positive electrode material and a preparation method and an application thereof. The sulfur-doped three-dimensional porous graphene/sulfur composite positive electrode material is composed of elemental sulfur deposited on a surface of a three-dimensional carbon skeleton of sulfur-doped three-dimensional porous graphene in situ; and the preparation method comprises the steps of first adding sodium bisulfate to a graphene oxide dispersion to react, then adding sodium sulfide to react under a partially neutral condition, carrying out liquid-solid separation, and performing freeze-drying on a solid product, thereby obtaining the sulfur-doped three-dimensional porous graphene/sulfur composite positive electrode material. A sulfur-doped amount of the composite positive electrode material is large, a sulfur loading capacity is controllable, a load is uniform and a utilization rate of an active substance sulfur is high; the sulfur-doped three-dimensional porous graphene/sulfur composite positive electrode material has the advantages of high specific capacity, high energy density, high stability and the like; and the cycle performance of a lithium-sulfur battery is greatly improved.

The present invention relates to an adjustable towing system and method for a towing vehicle and a towed vehicle. A towing anchor is located on the towing vehicle. A towed anchor is located on the towed vehicle and connected to the towing anchor, whereby the towing vehicle tows the towed vehicle. A gap is defined between the towing vehicle and the towed vehicle. The gap is provided with a length. At least one locking device selectively locks and unlocks the position of the towing anchor or the towed anchor, whereby as the towing vehicle and towed vehicle travel, relative speed differentials between the towing vehicle and towed vehicle produce repositioning of at least one of the towing anchor or the towed anchor in order to adjust the length of the gap.

The invention provides a multi-module pulsed power supply based on energy storage of high-temperature super-conduction pulsing transformers, and belongs to the technical field of pulse power. The multi-module pulsed power supply comprises two or more than two single-module pulsed power supplies, wherein each single-module pulsed power supply consists of primary charging power supplies, discharging switches, a high-temperature super-conduction pulsing transformer, a power diode, a pulsed capacitor and a load; the primary charging power supplies of each single-module pulsed power supply are connected to two ends of a primary winding of the corresponding high-temperature super-conduction pulsed transformer through the corresponding switches in parallel; and each power diode and the corresponding load are serially connected with a secondary winding of the corresponding high-temperature super-conduction pulsed transformer to form a loop. The multi-module pulsed power supply is characterized in that the single-module pulsed power supplies are connected to one another in parallel, and each single-module pulsed power supply is connected with the corresponding pulsed capacitor through a switching circuit switch and is connected with a one-way conduction unit in parallel. The multi-module pulsed power supply based on energy storage of the high-temperature super-conduction pulsing transformers has the advantages that the transmission efficiency is high, pulse amplitudes and pulse widths of outputting current are adjustable, and the voltage of a discharging end of the primary winding is low.