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35 results about "Indefinite time" patented technology

Sensing armature motion in high-speed solenoids

The invention relates to a technique for discerning a status of an armature of a high-speed solenoid at any time during its operational cycle. In high speed solenoids, motion of an armature does not occur until after a finite and indeterminate lapse of time after application of a driving voltage. In the present invention, a pulsed driving voltage is used to drive the solenoid. A resultant current in a coil of the solenoid exhibits discontinuities in its rate of change when the armature moves. Occurrences of the discontinuities are used to produce control signals and coordinate operation of the solenoids and other controllable events. Occurrence of these discontinuities exactly correlates with armature motion. Consequently, time lapse between application of voltage and motion of the armature becomes inconsequential in design of a control system. In other words, control and coordination of operation of high-speed solenoids can be performed without consideration of uncertainties of the time lapse. In an exemplary illustration, the invention is applied to controlling speed of a turbine generator of a type used in space vehicles. High-speed solenoids are used to control bursts of hydrogen and oxygen flow into a combustion chamber of the turbine generator. Speed control is maintained by controlling a rate and duration of the bursts.
Owner:HONEYWELL INT INC

Laser imaging radar target echo signal simulation method and simulator

The invention discloses a laser imaging radar target echo signal simulation method and a simulator, and belongs to the technical field of photoelectric information. A laser pulse reception apparatus converts a synchronous laser to a synchronous signal and an initial laser pulse; a control instruction is generated according to target track data, and a series of stepping time-delay signals with thesame delay difference are generated triggered by the synchronous signal to represent a series of equal time-delay planes; a laser pulse time-delay space reconstruction apparatus distributes the stepping time-delay signals to respective equal time-delay planes in space to form a spatial two-dimensional time-delay signal array; and a projection optical system projects the two-dimensional time-delaysignal to an entrance pupil position of a tested laser radar reception lens to realize echo signal simulation. According to the method and the simulator, problems of failure of generalization of different operating wavelengths, small quantity of optical echo channels, poor distance resolution, and indefinite time-delay etc. in the conventional target echo signal simulation technical scheme can besolved, and the method and the simulator are mainly applied to a laser imaging radar guidance weapon hardware-in-the-loop simulation system.
Owner:BEIJING INSTITUTE OF TECHNOLOGYGY

Sensing armature motion in high-speed solenoids

The invention relates to a technique for discerning a status of an armature of a high-speed solenoid at any time during its operational cycle. In high speed solenoids, motion of an armature does not occur until after a finite and indeterminate lapse of time after application of a driving voltage.In the present invention, a pulsed driving voltage is used to drive the solenoid. A resultant current in a coil of the solenoid exhibits discontinuities in its rate of change when the armature moves. Occurrences of the discontinuities are used to produce control signals and coordinate operation of the solenoids and other controllable events. Occurrence of these discontinuities exactly correlates with armature motion. Consequently, time lapse between application of voltage and motion of the armature becomes inconsequential in design of a control system. In other words, control and coordination of operation of high-speed solenoids can be performed without consideration of uncertainties of the time lapse.In an exemplary illustration, the invention is applied to controlling speed of a turbine generator of a type used in space vehicles. High-speed solenoids are used to control bursts of hydrogen and oxygen flow into a combustion chamber of the turbine generator. Speed control is maintained by controlling a rate and duration of the bursts.
Owner:HONEYWELL INT INC

Implementation method for establishing communication connection with relational person of vehicle and management terminal

The invention discloses an implementation method for establishing communication connection with a relational person of a vehicle and a management terminal, and the method comprises the steps that themanagement terminal obtains a target vehicle identifier uniquely corresponding to a target vehicle, and determines a matched target contact way based on the target vehicle identifier; and the management terminal initiates a communication request to the corresponding contact terminal through the target contact way to establish a communication connection with the contact terminal, so that a managerof the management terminal communicates with a relational person of the target vehicle. Therefore, the contact information of the related personnel of the vehicle can be intelligently determined through the unique identifier of the vehicle, and the communication request is actively initiated to the contact terminal corresponding to the contact information; therefore, when a special condition thatcommunication with the related personnel of the vehicle is needed occurs, the related personnel of the vehicle can be in contact with the related personnel of the vehicle quickly and timely, the management personnel does not need to spend uncertain time to wait, and the processing efficiency of the special condition can be improved.
Owner:XIAN IRAIN IOT TECH SERVICES CO LTD

Method for using slag cooler special for heat storage secondary combustion purifying device for treating solid waste for adsorbing VOCs waste gas

The invention relates to the technical field of volatile organic compound waste gas treatment, in particular to a method for using a slag cooler special for a heat storage secondary combustion purifying device for treating solid waste for adsorbing VOCs waste gas. The method is characterized in that the slag ash slagging temperature ranges from 850 DEG C to 950 DEG C, and therefore a two-stage cooling technical scheme including jacket type air cooling spiral conveyor first-stage air cooling and roller slag cooling assembly second-stage water cooling is adopted, and it is guaranteed that gradient descent of the slag ash temperature is stable and gentle; therefore, it is guaranteed that when slagging is carried at indefinite time intervals, spiral blades in a jacket type air cooling spiral conveyor have no the problems that local temperature changes are large, and the spiral blades and the inner wall of an air cooling jacket are locked after thermal expansion; and a spiral slag crushing ream is designed to roll on the circumferential face of a rotary roller along with rotation of the rotary roller, scale on the inner wall of the rotary roller is swept in cycles, and the rotary roller is prevented from heat conducting coefficient reducing and local high temperature deformation.
Owner:山东天盛纤维素股份有限公司

A method of using a special cold slag machine for treating adsorption vocs waste gas solid waste heat storage secondary combustion purification device

The invention relates to the technical field of volatile organic compound waste gas treatment, in particular to a method for using a slag cooler special for a heat storage secondary combustion purifying device for treating solid waste for adsorbing VOCs waste gas. The method is characterized in that the slag ash slagging temperature ranges from 850 DEG C to 950 DEG C, and therefore a two-stage cooling technical scheme including jacket type air cooling spiral conveyor first-stage air cooling and roller slag cooling assembly second-stage water cooling is adopted, and it is guaranteed that gradient descent of the slag ash temperature is stable and gentle; therefore, it is guaranteed that when slagging is carried at indefinite time intervals, spiral blades in a jacket type air cooling spiral conveyor have no the problems that local temperature changes are large, and the spiral blades and the inner wall of an air cooling jacket are locked after thermal expansion; and a spiral slag crushing ream is designed to roll on the circumferential face of a rotary roller along with rotation of the rotary roller, scale on the inner wall of the rotary roller is swept in cycles, and the rotary roller is prevented from heat conducting coefficient reducing and local high temperature deformation.
Owner:山东天盛纤维素股份有限公司

Method and apparatus for transferring data on bus to or from device to be controlled by said bus

The IEEE1394 bus communication protocol has three layers: physical layer, link layer, and transaction layer. A link layer IC implements the interface to an external application and prepares data for sending on the bus, or interprets incoming data packets from the IEEE1394 bus. A physical layer IC implements the direct electrical connection to the bus and controls many functions including arbitration for sending data on the bus. The procedure for sending data from a link layer IC onto the bus is that the link layer IC requests access to the bus and then waits until the physical layer IC grants the desired access. Upon detecting the grant status, the link layer IC is free to send data onto the bus. But if in the meantime the link layer IC refrains from sending data onto the bus, the granted bus access will not be given up. As a consequence the bus is blocked for an indefinite time period because the bus access granted cannot be overwritten by the physical layer IC. According to the invention an additional timer function is implemented in the link layer IC. This 'bus grant missed' timer function controls the link layer IC in such a way that it automatically gives back the bus control to the physical layer IC after a predetermined time period has elapsed during which the link layer IC has sent no data onto the bus.
Owner:THOMSON LICENSING SA
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