942results about How to "Suspension stability" patented technology

The invention relates to the melting coating of alcohol-base or water-base anti-penetrating sands, which uses the fireproofing bone materials, the floating agent, the felting agent, the reinforcing agent and the carrier as the preparing coating. The weight shares of the said coating are: 100,3-8,3-7,0.2-1.0 and 30-40. The invention uses chrome iron minerals as the main materials and is prior to any kinds of the traditional coating.

The present invention provides a flavoured milk or milk beverage containing grain granules. Its raw material composition contains (by wt%) 30-98.9% of milk, 0.1-5% of stabilizing agent, 1-20% of grain granules and 0-68.9% of water. The described stabilizing agent is formed from thickening agent and emulsifying agent according to the weight ratio of 1:0-3. Besides, said invention also provides its production method and concrete operation steps.

The present invention relates to a diary product containing fruit granules. Every 100 weight parts of the diary product of the present invention contains 30 to 80 parts of milk and milk product, 1 to 15 parts of fruit granules, 0.2 to 1.0 part of stabilizer compound and 0.25 to 0.6 part of acidity regulator; wherein, the stabilizer compound contains modified bio-fermentation polysaccharide and thickener; the fruit granule contains coconut juice fermented polysaccharide granule and fruit vegetable granule. A production method of the diary product containing fruit granules is also related by the present invention.

A kit for assisting in the set-up of a fluid pumping or mixing system including a superconducting element capable of reaching a transition temperature during a field cooling process is disclosed. In one embodiment, the kit comprises at least one pumping or mixing element including a levitation magnet and at least one charging magnet substantially corresponding in size, shape, and magnetic field distribution to the levitation magnet. The presence of the charging magnet adjacent the superconducting element during the field cooling process enables stable levitation of the pumping or mixing element, including when in a fluid-filled vessel positioned adjacent the superconducting element.

The invention relates to a water-based extinguishing agent with solidification and foaming characteristics and a preparation method of the water-based extinguishing agent. The water-based extinguishing agent with the solidification and foaming characteristics comprises the following substances by mass: 5-40 parts of organic or inorganic burning-resistant material which can be solidified and foamed after being heated, 0.1-2 parts of surfactant, 0.1-1 parts of water-soluble thickener, and 57-94 parts of water. The preparation method of the water-based extinguishing agent comprises the following steps: levigating the organic or inorganic burning-resistant material which can be solidified and foamed after being heated in a pulverizer to be 1250 meshes above, sufficiently dispersing, wetting and mixing the powder with the surfactant in a high-speed dispersing homogenizer, and then uniformly mixing with a water solution of the water-soluble thickener in a mixing tank. The water-based extinguishing agent can be uniformly dispersed in water and stably stored, quickly laid on the oil surface, stably suspended, and foamed to be films after being heated and accumulatively cover the surface. The water-based extinguishing agent has the advantage of special long anti-burning time, so that the water-based extinguishing agent is especially suitable for extinguishment and rescue for ultra-large type oil tanks.

A module levitation control method for the frequently conducting electromagnetic-type low-speed magnetic levitation train features that a levitation control system has only one levitation controller consisting of signal processing unit, A / D converter, clock signal generator, master DSP unit, PWM wave generator and auxiliary DSP unit. Said method includes such steps as measuring the levitation states of ends A and B of a module by two levitation sensors, calculating their control values, and controlling the current values of electromagnets A and B and in turn their electromagnetic forces, so ensuring the gap between module and track to be constant.

Disclosed is an apparatus for transferring substrates capable of stably transferring substrates by using magnetic levitation. The apparatus includes a substrate stage including a substrate loading unit, a first guide block disposed at a first end of the substrate stage and including a first magnet generator, a second guide block disposed at a second end of the substrate stage and including a second magnet generator, a first guide rail accommodating the first magnet generator and including a third magnet generator, and a second guide rail accommodating the second magnet generator and including a fourth magnet generator. The first magnet generator and the third magnet generator exert repulsive force on each other, and the second magnet generator and the fourth magnet generator exert repulsive force on each other.

The invention discloses a method for preparing a graphene oxide. The graphene oxide is prepared from a graphite raw material in a mode that mechanical action and oxidation reaction are combined. The method comprises the following steps of: mixing an oxidant with the graphite raw material, subsequently preparing the graphene oxide by employing mechanical action, adding the oxidant after the graphite raw material is subjected to mechanical action so as to prepare the graphene oxide, and adding the oxidant after the graphite raw material is subjected to mechanical action so as to carry out oxidation reaction and prepare the graphene oxide. According to the method, strong acids and strong oxidants required in a chemical oxidation method are abandoned, so that the introduction of byproducts and impurities is greatly reduced, the separation and the purification are convenient, the process procedures are reduced, the treatment time of a mechanical milling method is shortened, the energy consumption is reduced, and the yield is greatly increased. With the combination of the two methods, the graphene oxide can be prepared at one step within the shortest time, the yield is greater than 20%, the graphite oxide can be stably suspended under a centrifugal condition of 16,000rpm without ultrasound, and the method has the characteristics of rapidness, simplicity, convenience, environmental-protection and efficiency.

The invention relates to a nanoparticle jet flow minimum quantity lubrication grinding lubricant supply system. A minimum quantity lubrication grinding lubricant is prepared by adding nanoscale solid particles into a degradable grinding liquid, the lubricant is turned into pulse liquid drops with fixed pressure, variable pulse frequency and invariant liquid drop diameter, and the pulse liquid drops are sprayed into a grinding region in the form of jet flow under the action of an air isolating layer formed by high-pressure gas. The system has all advantages of a minimum quantity lubrication technology, has higher cooling performance and excellent tribological characteristic, and plays an important role; and grinding burn is avoided effectively, the workpiece surface quality is enhanced, and efficient, low-consumption, environment-friendly, resource-economic, low-carbon and clean production is realized.

The invention provides a high-reliability energy storage flywheel magnetic bearing digital control system, which is a device capable of controlling an electromagnetic bearing of a magnetic suspension energy storage flywheel. The system mainly comprises an interface circuit, a DSP (digital signal processor) system, a magnetic bearing control power module, a magnetic suspension energy storage flywheel system and a sensor circuit, wherein the DSP system acquires a magnetic bearing rotor displacement signal, a speed signal and data such as magnetic bearing coil current through the interface circuit; and the DSP system actively controls the electromagnetic bearing according to the magnetic bearing rotor displacement signal, the magnetic bearing coil current and the speed signal. The invention realizes the integrated design of a magnetic bearing digital controller, so that the integration degree of a magnetic suspension energy storage flywheel system controller is greatly improved, the volume and weight are reduced, the power consumption of the controller is reduced and the reliability of the controller is improved.

The invention discloses a wall hanging device for a television. The wall hanging device comprises an outer frame (1) composed of an upper supporting plate (12) and a right wall plate (11), wherein a socket connector (2) is arranged inside the outer frame (1); the socket connector (2) is connected with the television (8) through a clamp fit part (7); a downward extension part (121) is arranged at the bottom end of the left side of the upper supporting plate (12); and the right side of the upper supporting plate (12) is fixedly connected with the right wall plate (11). According to the wall hanging device, the mounting and discharge of the wall-mounted television are facilitated, the hanging is stable, and the safety is high.

The present invention relates to a distributed active fault-tolerant control system of suspension module of electromagnetic maglev train. The control system comprises 8 electromagnets which are arranged on the suspension module, 4 independent suspension controllers, a first sensor group and a second sensor group; the 8 electromagnets are divided into 4 electromagnet groups; each electromagnet group comprises two electromagnets which are connected in series; each suspension controller is connected with an electromagnet group through a chopper; the first sensor group and the second sensor group are respectively arranged at two ends of the suspension module; the suspension controller, the first sensor group and the second sensor group are connected through a CAN bus; the suspension controller is connected with the vehicle monitoring system of the maglev train. The distributed active fault-tolerant control system of the suspension module of the electromagnetic maglev train can tolerate failures of the controller, the sensor and the actuator in the suspension system, and thus greatly improve the reliability, stability and security.

The invention relates to a process for preparing ophthalmic formulations and to formulations containing a suspension of an ophthalmic drug in an aqueous vehicle. The invention further relates to the production of stable ophthalmic formulations that have a minimal propensity to form drug aggregates.

A kit for assisting in the set-up of a fluid pumping or mixing system including a superconducting element capable of reaching a transition temperature during a field cooling process is disclosed. In one embodiment, the kit comprises at least one pumping or mixing element including a levitation magnet and at least one charging magnet substantially corresponding in size, shape, and magnetic field distribution to the levitation magnet. The presence of the charging magnet adjacent the superconducting element during the field cooling process enables stable levitation of the pumping or mixing element, including when in a fluid-filled vessel positioned adjacent the superconducting element.

The method discloses a bearingless synchronous reluctance motor torque and suspension force direct controller and a construction method thereof. The bearingless synchronous reluctance motor torque and suspension force direct controller consists of a direct torque controller with a rotating speed and torque double closed loop and a suspension force direct controller with a rotor displacement and suspension force double closed loop, wherein the direct torque controller consists of two proportional plus integral (PI) controllers, a torque winding flux linkage and a torque observer, a reference flux linkage generating module and a space vector pulse width modulation module; and the suspension force direct controller consists of two proportional plus integral plus derivative (PID) controllers, a torque winding flux linkage and torque observer, a suspension force winding flux linkage observer, a suspension force estimation module, a force / flux linkage conversion module and a space vector pulse width modulation module. By the controller and the construction method, motor torque and radial suspension force are independently controlled, stable suspension and operation of a motor rotor are ensured and high motor operating performance is achieved.

The invention discloses a magnetic flux feedback suspension control method and device of an EMS type low-speed aerotrain. The method comprises the following implementation steps: collecting and obtaining the magnetic flux density at the position of a suspension gap through a magnetic flux induction coil a, and collecting the suspension accelerated speed and the suspension gap; calculating a suspension system control rate according to the magnetic flux density, the suspension accelerated speed and the suspension gap; generating a closed loop to control PWM signals according to the suspension system control rate, and respectively outputting the PWM signals to a PWM driving circuit to adjust the suspension force between a suspension electromagnet and a track. The device comprises a sensor set, a data collection board, a suspension controller and the PWM driving circuit, wherein the sensor set, the data collection board, the suspension controller and the PWM driving circuit are sequentially connected. The method and device have the advantages of being good in suspension control stability, high in sensitivity, low in control bandwidth, capable of improving the stability and robustness of the suspension control system, simple, easy to implement, strong in anti-jamming capability, good in expandability, and flexible in implementation.

A magnetic suspension energy-storage flywheel system being a energy-storage device for spacecrafts mainly consists of an axial mixed magnetic bearing, a protection bearing, a radial / axial integrated displacement transducer, a rotor of high-strength composite material, a motor / generator, a radial mixed magnetic bearing, a casing, a mounting shaft and a lock nut. The motor / generator and the mounting shaft is in the middle of the flywheel, and outward are the radial mixed magnetic bearing, the radial / axial integrated displacement transducer, the protection bearing, the axial mixed magnetic bearing and the lock nut in order. The rotor of the high-strength composite material lies outside of the radial mixed magnetic bearing. The integral system is sealed in the casing.

The invention discloses a magnetic suspension momentum sphere used for spacecraft attitude adjustment. The magnetic suspension momentum sphere comprises a spherical-shell-shaped rotor and three groups of stators. Each group of stators comprises two stators taking the sphere center of the rotor as the symcenter, and axes of the three groups of stators are mutually orthogonal. Each stator comprises a stator core and a coil array. Inner surfaces, matched with the rotor, of the stator cores are spherical surfaces, and air gaps are reserved between the spherical surfaces and the outer surface of the rotor. Through grooves are formed in the stator cores radially and are evenly distributed on the circumferences of the stator cores. The coil arrays refer to disc-type motor stator windings. Two effective sides of each coil in each coil array are placed in two through grooves of the corresponding stator core respectively. The magnetic suspension momentum sphere has the advantages that cost is low, suspension and rotation driving are integrated, the magnetic suspension momentum sphere is simple and compact in structure, small in size and low in mass and belongs to fixed stable suspension, and suspension control is simple.

The invention discloses a new method for preparing a nano-calcium carbonate / polyester composite material. The nano-calcium carbonate / polyester composite material is successfully prepared by the adoption of the technology of nano-calcium carbonate in situ synthesis and modification and the technology of even dispersion in monomers and in situ esterification and condensation polymerization. Due to the stable suspension and even dispersion of the nano-calcium carbonate particles in the monomers, the modification agent is linked to the surface of the nano-calcium carbonate and participates in esterification reaction to combine the nano-calcium carbonate particles with polyester chemical bonds, thus finally realizing the even dispersion of the nano-calcium carbonate in the polyester without agglomeration, and effectively improving the mechanical property of the polyester. The new method does not change the original production technology and equipment of polyester, thus being easy to realize commercial process.

The invention discloses a vertical take-off and landing control method for a quad-tilt-rotor unmanned aerial vehicle. Firstly, a control platform for the quad-tilt-rotor unmanned aerial vehicle is constructed, and posture data are collected by using various sensors comprehensively. Specific to different models of yaw angles and roll angles, the invention discloses a control method based on linear secondary optimization and a control method based on model reference slip form. The method comprises the following steps: (1) performing dynamics analysis on the aerial vehicle to obtain a yaw angle model and a roll angle model, and identifying a system to obtain model parameters; (2) designing a yaw angle controller and a roll angle controller respectively on the basis of the models; (3) acquiring a posture measuring system by using various sensors; (4) performing real-time posture control on the quad-tilt-rotor unmanned aerial vehicle by using the control method in the step (2) and measured data of the posture measuring system obtained in the step (3).

The invention discloses a high-speed magnetic suspension linear propulsion system, and belongs to the field of motors. The high-speed magnetic suspension linear propulsion system aims at solving the problems that an existing magnetic suspension propulsion system is poor in stability and complex in control. The propulsion system comprises a motor device and a driving control device. The motor device is mainly formed by a primary part and secondary parts. The primary part is mainly formed by a suspension part, a primary guide part and a primary propulsion part. Each secondary part is mainly formed by a rotor base plate and a secondary unit. Each secondary unit is fixed to the corresponding rotor base plate and is mainly formed by a permanent magnet and a secondary base plate. The driving control device is used for generating a driving signal and transmitting the driving signal to the primary part to achieve driving control. According to the high-speed magnetic suspension linear propulsion system, as suspending and guiding are adapted and stabilized by itself, and a special suspending and guiding control device is not required, control is easy, safe and reliable, cost is low, and running efficiency is high. Suspension and guide air gaps are large, suspending and guiding are stable, and the harsh requirement for the building accuracy of a guide rail is avoided.

The invention relates to a display screen having a phosphor layer of a phosphor composition of a phosphor coated with an oxygen compound of one of the elements magnesium, calcium, barium, zinc and aluminium, and with colloidal SiO2 having an average particle size of 70 nm< / =d< / =130 nm. The invention further relates to a phosphor composition of a phosphor coated with an oxygen compound of one of the elements magnesium, calcium, barium, zinc and aluminium, and with colloidal SiO2 having an average particle size of 70< / =d< / =130 nm, and to a method of manufacturing the phosphor composition.

The invention discloses a high-temperature-resistant and high-salt-resistant fine gel particle as a profile control agent as well as a preparation method and an application of the fine gel particle. The preparation method of the fine gel particle comprises the following steps of firstly, adding modified starch, a monomer A, a monomer B, a crosslinking agent, an initiator and an accelerant into a reaction kettle according to a certain ratio; and after finishing the polymerization reaction of the six components to form integrated water-based gel, drying, crushing, granulating, screening and performing other process steps to obtain the fine gel particle. The application method of the high-temperature-resistant and high-salt-resistant fine gel particle is as follows: a certain quantity of fine gel particles prepared by using the preparation method are added into a Bingham fluid, the gel particles can be stably suspended without settling under static and dynamic conditions, and then, the whole fluid is injected to the stratum by means of pumping pressure. By using the high-temperature-resistant and high-salt-resistant fine gel particle and the application method thereof, disclosed by the invention, the construction success rate of the gel particle can be greatly increased, and a favorable deep profile control effect can be achieved.

The invention provides a method for producing pulverized particles of a crystalline organic compound which is poorly water soluble. Also disclosed is a pulverized organic compound particle produced by such a method. Specifically disclosed is a method for producing a poorly water-soluble organic compound particle for medical use, which is characterized in that a poorly water-soluble organic compound for medical use is mixed with a physiologically acceptable salt and a physiologically acceptable polyol, and subjected to wet milling. Also specifically disclosed is a poorly water-soluble organic compound particle for medical use, which is produced by such a production method.

The embodiment of the invention discloses a device for orientation of an air floating type liquid crystal substrate. The device comprises a heating platform, supports and supporting ejection needles, wherein a plurality of air holes are formed in the heating platform and used for delivering hot wind which is even in temperature and flows vertically upwards, the supports are arranged on the periphery of the heating platform and used for supporting and clamping the liquid crystal substrate to be oriented, the supporting ejection needles are evenly arranged in the heating platform, can move vertically with the supports in the same direction, and are used for supporting the bottom of the liquid crystal substrate for at least part time, and the air injection amount of the air holes is gradually reduced from the center of the heating platform to the edge of the heating platform. The embodiment of the invention further discloses a corresponding method for orientation. According to the device and method, the liquid crystal substrate is evenly heated and irradiated by ultraviolet light and the quality and the yield of the liquid crystal substrate can be improved.

The present invention discloses a permanent magnet biased axial hybrid magnetic bearing, which comprises two stator discs having the same structure, wherein the two stator discs are arranged relative to a suction disc in an axially symmetric manner, the disc surface of every stator disc is provided with an outer annular coil groove, two annular magnetic isolation ring grooves, an annular permanent magnet groove and an inner annular coil groove along a radial direction from outside to inside, the two annular magnetic isolation ring grooves are respectively positioned on both radial sides of the annular permanent magnet groove, control coils are arranged inside every inner annular coil groove and every outer annular coil groove, a magnetic isolation ring is intercalated inside each annular magnetic isolation ring groove, an annular permanent magnet is pressed into each annular permanent magnet groove, and every annular permanent magnet is radially magnetized. According to the present invention, a static bias magnetic field is generated by the permanent magnet material so as to reduce magnetic bearing volume, lower power amplifier power consumption, and improve carrying capacity of the magnetic bearing; and the annular permanent magnet is embedded in the middle of the stator disc so as to ensure suction disc stiffness and upper-lower symmetry and left-right equality of the provided bias magnetic field.

The invention discloses a method for preparing conduction oil with strengthened heat transfer by adopting nano-particles and application of the method to electrical heating oil lights. The preparation method comprises the steps of the preparation of the nano-particles, the washing of the nano-particles, the dispersion of the nano-particles, coating modification of the nano-particles, the dispersion of the nano-particles in conduction oil, moisture removal by heating, and the filling and storage of nanometer conduction oil, the prepared conduction oil is dispersed with the nano-particles, and the nano-particles are subjected to surface coating modification through an oleophilicsurfactant to accelerate the nano-particles to be dispersedly suspended in the conduction oil. The thermal coefficient of the conduction oil is remarkably improved, the conduction oil still has steady suspension after two years of storage and is uniform and steady novel heat transfer medium with high thermal coefficient, the density of the conduction oil reaches between 0.85 and 1.0g / cm<3>, the open flash point is more than or equal to 180 DEG C; the conduction oil can improve the rate of temperature increase, reduce the electrified heating and temperature increase time of the oil lights, and play roles in power conservation and material conservation when applied to the electrical heating oil lights; and practice proves that the temperature increase rates of the electrical heating oil lights with the application of the conduction oil are improved by more than 15 percent than those of common oil lights.

The invention discloses a river section water quality monitoring system. The river section water quality monitoring system comprises a bank control base station and a monitoring box, wherein a sampling device, a water quality monitoring device and an underwater control device are arranged in the monitoring box; the sampling device is connected with the water quality monitoring device which is connected with the underwater control device, a balance stabilizing device is arranged at the upper part of the monitoring box, and a lifting control device is arranged at the lower part of the monitoring box. A river section water quality monitoring method comprises steps of (1) building the bank control base station; (2) mounting cables; (3) controlling the monitoring box to reach a river section monitoring point; (4) monitoring the river section water quality. The river section water quality monitoring system is simple in structure, high in pertinence, high in automation degree and convenient to operate; with adoption of the method, the water quality condition of the river section can be monitored in real time, the accuracy is high, information is pushed actively and remotely, remote control is realized, the water quality condition is known by a worker conveniently at any time, and the labor intensity is reduced, so that the working efficiency is increased and the economic cost is reduced.

The invention relates to an overhead power transmission line electrification deicing device. The overhead power transmission line electrification deicing device includes an insulating deicing bar; the deicing bar is erected at one side of a power transmission line through a carrier frame; the carrier frame is provided with a driving mechanism; the carrier frame comprises two upright rods arranged in parallel; the two upright rods are positioned through at least two parallelly-arranged transverse rods between the two upright rods; the top end of each upright rod is suspended on the power transmission line through a suspending mechanism respectively; the deicing bar is vertically arranged on an end portion of a first transverse rod, wherein the end portion of the first transverse rod extends out from the upright rods; the height of the deicing bar is corresponding to the height of the top end of the upright rods; and the driving mechanism comprises a driving wheel and an insulating transmission rod wound on the driving wheel. The overhead power transmission line electrification deicing device of the invention is simple in structure. With the overhead power transmission line electrification deicing device adopted, deicing operation can be performed under a situation of electrification of a whole line, and the reliability and quality of power supply of a power system can be effectively ensured on the premise that the efficiency of the deicing operation can be improved.