240 results about "Stable status" patented technology

A level shift circuit includes an input stage and an output stage coupled to each other by two nodes. The input stage changes the voltages on the nodes according to an input signal, and the output stage determines an output signal according to the voltages on the two nodes. In a transition state, the input stage provides a large current to charge or discharge the first node or the second node so as to quickly change the voltage thereon. In a steady state, the input stage lowers the current so as to reduce power consumption.

A method of determining anomalous operation of a system includes: capturing a stream of data representing sensed (or determined) operating parameters of the system over a range of operating states, with a stability indicator representing whether the system was operating in a stable state when the operating parameters were sensed; determining statistical properties of the stream of data, including an amplitude-dependent parameter and a variance thereof over time parameter for an operating regime representing stable operation; determining a statistical norm for the statistical properties that distinguish between normal operation and anomalous operation of the system; responsive to detecting that normal and anomalous operation of the system can no longer be reliably distinguished, determining new statistical properties to distinguish between normal and anomalous system operation; and outputting a signal based on whether a concurrent stream of data representing sensed operating parameters of the system represent anomalous operation of the system.

The present invention discloses a voltage mode switching regulator with improved light load efficiency and mode transition characteristic, and a control circuit and a control method therefor. The switching regulator can switch between a pulse width modulation (PWM) mode and a pulse skipping mode. The control method for the switching regulator comprises: comparing a feedback signal relating to an output voltage with a reference signal, to generate an error amplification signal; generating a duty signal according to the error amplification signal and a ramp signal, to control the switching regulator; setting a threshold level of the error amplification signal and a threshold level of the pulse skipping mode according to the error amplification signal in a stable status; and when the error amplification signal is close or equal to the threshold level of the pulse skipping mode, generating a pulse skip signal to enter the pulse skipping mode.

The invention discloses a resource allocation method and network-side equipment. The method comprises the following steps that: a network side judges whether the size of a data packet transmitted by a user side during a talkspurt period is in a stable status when determining that voiceover internet protocol (VoIP) service transmission enters the talkspurt period; the network side determines a lower limit value of the data packet transmitted by the user side during the talkspurt period according to the size of the data packet in the stable status after the size of the data packet is confirmed to be in the stable status; and the network side adopts a semi-continuous resource scheduling mode to allocate a semi-continuous resource to the user side when the following VoIP service is in the talkspurt period, wherein the semi-continuous resource is not greater than the determined lower limit value. By controlling the size of the semi-continuous resource, the report of unnecessary data volume in a buffer area is avoided, so the report expenditures on a buffer status report (BSR) and a scheduling request (SR) are effectively reduced, and the communication resources are saved.

The invention discloses an emulsion of micron-sized docosahexenoic acid (DHA) and a preparation method thereof. The emulsion of micron-sized docosahexenoic acid (DHA) comprises: 50g to 150g of DHA, 10g to 50g of coating agent, 14g to 130g of oil phase emulsifier, 8g to 50g of aqueous phase emulsifier, 75g to 350g of thickening and stabilizing agent, 10g to 100g of dispersant and 0.5g to 20g of antioxidant; water is added for obtaining solution of 1000g. The emulsion of the invention is O/W type and mainly characterized in that the emulsifiers and the thickening and stabilizing agent are emulsified with the DHA and water according to certain proportions so as to obtain the emulsion with stable status and emulsified particle diameter less than 1 micron. The invention provides a prescription of a DHA emulsion capable of dispersing in cold water, provided with good stability and is stable against light, heat and oxygen and can be conveniently used in beverage, food and other relevant industries.

The invention discloses a water-soluble fertilizer containing chitin and humic acid and a production method thereof. The method is characterized by degrading chitin, a natural high polymer, and then mixing chitin with humic acid solution and nitrogen fertilizer to produce the water-soluble fertilizer containing chitin and humic acid. The produced water-soluble fertilizer contains 20-40g/l of chitin, 20-40g/l of nitrogen, 170-190g/l of humic acid and 1-5g/l of plant growth regulators. The method is simple, easy to operate and high in feasibility of implementation. The produced water-soluble fertilizer integrates the functions of nutrition supplement, bacteria immunity and virus immunity, improves soil conditions, prevents hardening, raises ground temperature, promotes prematurity, resists diseases and tolerates stress, resists continuous cropping and balances nutrition, and features stable status and lasting fertilizer efficiency.

The present invention provides a kind of high voltage direct current broadband domain corona current measurement system, including the sampling resistance sensor, the UHV local end measurement unit, the optical fiber transmission unit, the safe location measurement unit and the upper monitor; The sampling resistance sensor samples the corona current signal of the HVDC line, and converts the corona current signal to the voltage signal, the UHV local end measurement unit collects the voltage signal, and obtains the optical signal by photoelectric conversion, the optical signal transforms to the safe location measurement unit by the optical fiber transmission unit, the safe location measurement unit converts the optical signal to the voltage signal, the host computer performs processing, storing and displaying with the voltage signal. The present invention has a wide range of measuring frequency, strong ability of anti-electromagnetic interference and other advantages, also can running in long-term stable status under the condition of the UHV DC and all kinds of bad natures, this provides effective technological means for further research on the character of the UHVDC corona.

This invention discloses a data protecting method for embedded device. It consists of the following steps: divide the operation of data modification to stable status and temporary status; add a marker to each operation step and read in this marker when operation finish; the temporary status marker of the former operation was rewritten to be stable status marker when the last step in the multi step operation finish; startup, scan all the data, abandon unfinished action (temporary status operation marker) and come back to the former status. This invention could increase data repair speed.

The invention discloses an emulsion of micron-sized arachidonic acid (ARA)/docosahexenoic acid (DHA) and a preparation method thereof. The emulsion comprises 50g to 150g of ARA and DHA (the ratio of ARA to DHA is 2 to 4), 10g to 100g of oil phase emulsifier, 0.1g to 10g of antioxidant, 5g to 40g of aqueous phase emulsifier, 100g to 300g of thickening and stabilizing agent and 10g to 100g of dispersant; water is added until the solution is 1000g. The emulsion of the invention is O/W type and mainly characterized in that the emulsifiers and the thickening and stabilizing agent are emulsified with the ARA/DHA and water according to certain proportions so as to obtain the emulsion with stable status and emulsified particle diameter less than 1 micron. The invention aims at providing a prescription of an ARA/DHA emulsion which is reasonable in nutrition-allocated proportion and capable of dispersing in cold water, provided with good stability and is stable against light, heat and oxygen and can be conveniently used in beverage and other relevant industries.

A computer system and overclock controlling method and program thereof, which includes steps of providing an overclock work voltage to a CPU when overclock is requested, then the CPU adjusts its clock domain according to the overclock work voltage. The overclock work voltage is a sum of a normal work voltage and an additional external voltage, by which the CPU may enter an overclock mode (a frequency of a clock domain signal is higher than a standard frequency value). Eventually, when the frequency of the clock domain signal of the CPU is in a stable status during the overclock mode, the work voltage for the CPU is reduced and the CPU keeps working in the overclock mode.

The invention relates to a device for controlling floor bulging of a roadway, which comprises a roadway floor, rock bolts on two sides of the roadway, a tray for the rock bolts, a steel band (1) and a steel band (2) with teeth and holes, and a constant force clamp device. The steel band (1), the steel band (2) and the constant force clamp device form a floor beam together. When the floor bulges of the roadway due to various factors, the floor provides an upward acting force for the floor beam, and the steel band (1) and the steel band (2) with the teeth and holes are subjected to a tensile force under the fixation of the roadway side and the base angle rock bolts. Under the action of the constant force clamp device, friction force with certain size is produced between the steel band (1) and the steel band (2). When the tensile force received by the steel bands is larger than the maximum friction force between the steel band (1) and the steel band (2), two tooth sockets at the overlapped position are dislocated to improve the length of the floor beam; when the tensile force received by the steel bands is smaller than the maximum friction force between the steel band (1) and the steel band (2), the device is in a temporary stable status. For continuous floor bulging, the device repeats the process and the dislocation of the tooth sockets between the steel band (1) and the steel band (2) improves the length of the floor beam to provide certain supporting resistance for the floor. The device applies basically constant supporting resistance to the roadway floor all the time to reduce the floor bulging amount of the roadway and have the function of reducing the overall deformation amount of the roadway.

A bistable gripper for an aerial vehicle may include a base, a first finger, a second finger, a switching pad, a first elastic connector, and a second elastic connector. The base may include a first beam and a second beam. The first finger may be pivotably attached to the first beam at a first joint, and the second finger may be pivotably attached to the second beam at a second joint. The switching pad may be configured for moving relative to the base. The first elastic connector may be attached to the switching pad and the first finger, and the second elastic connector may be attached to the switching pad and the second finger. The bistable gripper may be configured for switching between a closed stable state and an open stable state.

The invention discloses a distributed driving vehicle steering stability control system and a control method thereof. A whole vehicle system outputs a mass center slip angle beta and a mass center slip angle speed yaw velocity omega z to a stability judgment module according to input vehicle motion state parameters; the vehicle longitudinal speed vx, the front wheel rotation angle delta f and the road adhesion coefficient mu are outputted to an ideal state module; the ideal state module calculates and outputs omega exp and beta exp to a beta omega joint controller; whether the vehicle is stable or not based on the yaw velocity threshold value and the stability index is judged; in an unstable state, the beta omega combined controller performs sliding mode control to output additional yawing moments delta M beta and delta M omega; a joint coefficient distribution module distributes a control proportion according to the stability index to obtain a weighted additional yawing moment delta M; the torque distribution module distributes the delta M to each wheel through a dynamic load distribution algorithm; stability of the vehicle body can be accurately judged under different working conditions, so the control proportion is reasonably distributed, and control efficiency of the controller is improved.