摘要:
The present invention discloses a multi-mode coexistence method of a multi-mode communication device comprising steps of: setting priorities of frequency usage for all modes supported by the multi-mode communication device; determining a channel where a signal of a lower priority mode are interfered with by that of a higher priority mode; performing frequency hopping to outside said determined channel by the lower priority mode. The invention allows signals of various modes to coexist in the multi-mode communication device without modifying the existing RF reception system, and thus reduces the system cost and implementation complexity.
摘要:
A computer-implemented method includes displaying information from a mapping application on a first domain on a web page, displaying one or more portable program modules from a second domain on the web page, and generating a display on the mapping application based actions form the one or more portable program modules.
摘要:
Disclosed is a doped cerium oxide sorbent that can effectively and regenerably remove H2S in the temperature range of about 500° C. to about 1000° C. Regenerable sorbents (e.g., ZnO, La2O3, CeO2) and methods of using them are disclosed that allow cyclic desulfurization from about 300-500° C., 350-450° C., and at about 400° C. In one embodiment, the present invention relates to a method of desulfurizing fuel gas comprising passing the fuel gas through the sorbent at a space velocity wherein the sulfur compounds are adsorbed substantially on the surface of the sorbent; and regenerating the sorbent by passing a regenerating gas through the sorbent, wherein substantially all of the sulfur compounds are desorbed from the sorbent surface. In a further embodiment, the method of desulfurizing fuel gas further comprises repeating the aforementioned steps while the fuel processor is in operation. In another embodiment, the step of passing the fuel gas may be preceded by reducing the sorbent by passing a reducing gas through the sorbent. In another embodiment, the sorbent may be fully sulfided, i.e., sulfided on its surface and bulk (internally).
摘要:
An apparatus controls a power converter of an AC motor drive system, the power converter outputting multi-phase AC current to an AC motor. The apparatus comprises: a state selecting unit; and an advanced controller. The state selecting unit selects an operation mode, from among a plurality of operation modes, for the AC motor based on system real-time operating conditions, the plurality of operation modes including a normal mode, a power interruption mode, a fault protection mode, and a power-up/down dynamic mode. The system operating conditions include DC voltage available to the power converter, motor load condition, and motor speed command. The advanced controller controls multi-phase AC current output from the power converter to the motor in accordance with the operation mode selected by the state selecting unit. The advanced controller generates a current control reference value that is based on the selected operation mode to achieve current control under various operating conditions of the motor drive system.
摘要:
A method and a system for adding a group member, includes: sending a client corresponding to a user to be possibly added to a group a notification message to confirm whether the user agrees to be added to the group; obtaining a confirmation result from the client, and adding to the group the user who agrees to be added to the group. By utilizing the method and the system, unwanted disturbance caused by group management in a group communication system is lessened, meanwhile security of a group communication system is improved, and illegal spread of media which is harmful to individuals and society caused by flaws of a group system may be prevented.
摘要:
Erbium doped fiber amplifiers for dense wavelength division multiplexed (DWDM) metro area optical networks may be configured as either high gain amplifiers or power amplifiers. The erbium doped fiber type, length, and pump power level are selected so that the shape of the gain spectra is approximately the same for single channel or multi-channel operation. In one embodiment, the same erbium doped fiber type and length is used for both power amplifiers and high gain amplifiers, reducing manufacturing costs.
摘要:
In the broadest sense an inventive conjugate includes a macrocyclic scaffold moiety incorporating at least one nitrogen atom. Through linkages to the ring, nitrogen atoms are bonded to at least one therapeutic species, or one cellular trafficking species, and preferably two or more types of trafficking species. The linkages between ring nitrogen atoms and agents are formed through N—C, N—S, N—O or N—N bonds. It is appreciated that more than one agent or agent species are coupled to a ring nitrogen atom through the inclusion of a branched carbon atom or secondary amine nitrogen within the intermediate between the agent and ring nitrogen atom. A disulfide bond intermediate between an agent and a linkage to the ring nitrogen is preferred in instances where intracellular release of the agent or trafficking species is desired. An optional metal ion is coordinated by the scaffolding moiety.
摘要:
A method of controlling a power converter (20) of a motor drive system (10)controls the power converter (20) during a first operating mode by applying a current control scheme, which sets power converter commands to control torque current flowing from the power converter (20) to the motor (30) to achieve desired motor speed; and initiates a second operating mode when power supply to the power converter (20) is interrupted. The second operating mode includes controlling negative torque current between the power converter (20) and the motor (30) so that mechanical energy from the motor (30) charges an element (58) on a power supply side of the power converter (20). The first operating mode is resumed when the input power recovers. Torque current between the power converter (20) and the motor (30) is also controlled to limit a maximum transient DC bus voltage.
摘要:
An optical pumping module for use in optical amplifiers in fiber-optic communication. The pump module integrates laser diodes and a polarization beam combiner (PBC). The laser diodes and PBC may be attached to a substrate. The laser diodes may be formed onto the substrate either monolithically or by attaching discrete components to the substrate. The PBC may include isolation to prevent reflections back into the laser diodes.
摘要:
A method of controlling a power converter (20) of a motor drive system (10)controls the power converter (20) during a first operating mode by applying a current control scheme, which sets power converter commands to control torque current flowing from the power converter (20) to the motor (30) to achieve desired motor speed; and initiates a second operating mode when power supply to the power converter (20) is interrupted. The second operating mode includes controlling negative torque current between the power converter (20) and the motor (30) so that mechanical energy from the motor (30) charges an element (58) on a power supply side of the power converter (20). The first operating mode is resumed when the input power recovers. Torque current between the power converter (20) and the motor (30) is also controlled to limit a maximum transient DC bus voltage.