304 results about "Dynamic coupling" patented technology

An adaptive, force-fed paintball loading device capable of delivering paintballs to a paintball marker against the force of gravity is disclosed. The paintball loading device preferably includes a refillable compartment that is generally an oblong elliptical container holding a plurality of paintballs. Paintballs are able to flow through an opening in the lower portion of the compartment and in between two synchronously geared counter-rotating helical augers. The geometry of flutes on the counter-rotating augers causes the paintballs in the lower portion of the container to be engaged between the augers and then pushed along a channel between the augers and out through a feed tube, which is attached to a paintball marker. A DC electric motor is used to drive the augers. A speed reduction unit is employed to reduce the motor shaft speed to a level practicably used by the synchronously geared augers. A feedback control loop and dynamic coupling element are also employed to enhance the response of the loading system to changing rates of fire of the attached paintball marker. Input signals from sensors on the paintball marker and the paintball loading device may also be employed to enhance the responsiveness of the paintball loading device to the demands of the paintball marker.

An active vibration damping system having a supporting spring for addressing a static force from a payload, and an independent actively isolated damper positioned in parallel between a payload and a source of vibration for damping dynamic force from the payload to an actively isolated point. The actively isolated damper includes a small intermediate mass, distinct and decoupled from the payload mass, and a passive isolator element for dynamic coupling of the isolated platform to the small intermediate mass. The small intermediate mass provides a point to which dynamic forces from the payload may be dampened. The active damper also includes at least one actuator coupled at one surface to the small intermediate mass and coupled at a second surface to the vibrating base platform. A motion sensor may also be provided on the small intermediate mass so as to generate a feedback signal as a function of the movement of the small intermediate mass. The motion sensor together with a compensation / amplifier module and the actuator act as part of a feedback compensation loop for minimizing vibration.

The invention provides a multi-constraint locus planning method of a spatial free floating mechanical arm. The method can satisfy requirements for dynamic coupling, joint driving capability limitation, arresting opportunity and multiple optimizing indexes of a spatial robot. A driving joint motor realizes an autonomous arresting task to a non-cooperative object. The multi-constraint locus planning method comprises the steps of establishing a multi-member dynamic model of the spatial robot; establishing the locus of each joint of the mechanical arm based on a Bessel curve, converting constraint and optimizing index functions in a joint locus designing process to function of a Bezier curve control point, so that locus programming is finally represented by the Bezier curve control points as a nonlinear optimization problem of the optimizing parameter; converting the locus planning problem of the spatial robot to a multi-constraint and multi-object optimization problem, performing searching on the optimization problem by means of a nonlinear optimization method, obtaining an optimal solution, and finishing multi-constraint locus planning of the spatial free floating mechanical arm.

The invention discloses a friction liner-hoisting steel wire rope dynamic friction drive test device and a friction liner-hoisting steel wire rope dynamic friction drive test method. The device comprises a base frame, a driving mechanism, a friction drive mechanism, a surrounding angle adjusting mechanism, a shock excitation mechanism, a steel wire rope and a condition monitoring mechanism, wherein the base frame comprises a stand column, a lower support platform and an upper support platform; the driving mechanism comprises a motor and a torque sensor; the friction drive mechanism comprises a friction wheel and a brake device; the surrounding angle adjusting mechanism comprises a C bracket and an adjusting wheel; the shock excitation mechanism comprises a transverse shock excitation mechanism and a longitudinal shock excitation mechanism; the condition monitoring mechanism comprises a steel wire rope tension monitoring device, a dynamic contact monitoring device, a steel wire rope vibration monitoring device and a micro-slippage monitoring device. After the device and the method are adopted, the dynamic friction drive characteristic between a friction liner and a hoisting steel wire rope can be simulated in a friction hoisting system when the hoisting steel wire rope is in a dynamic coupling vibration state, so that various changes in the friction drive process under the actions of transverse vibration, longitudinal vibration and transverse and longitudinal coupled vibration can be researched.

An autonomous personal transportation system for moving passengers and light freights is constructed with a track network and small vehicles on the track network. There are a number of stations and stops for loading and unloading on side tracks off the mainline of the track network. The vehicle width is limited to a dimension for one seat. The vehicles can be coupled statically or dynamically to form a train. The track has side rails for the rigid wheels of the vehicle and a central rail for centering the vehicle on the guideway and providing additional acceleration and braking capability. The control system for the movement of vehicles is divided into three levels: the central control system, the wayside control system and the vehicle control system.

The invention discloses an attitude control method. The attitude control method comprises the following procedures that the on-satellite time influencing the satellite attitude precision is aligned through a second pulse signal; a satellite sensor error used for satellite attitude measurement is corrected in real time; the gravity gradient disturbance torque of an oblique flying satellite is compensated through a dynamics coupling relationship; the satellite flexibility is restrained through an input forming control method in the attitude controlling process; the attitude control law of an angular velocity feedforward instruction is increased through position and speed double loops and a position correcting loop to achieve high-precision and high-stability attitude guidance control; and quick attitude maneuver of the large-inertia satellite is achieved through a saturated sliding mold structural control algorithm. The attitude control method has the advantages that the computing method is simple, control is flexible, the attitude control method can be applied to attitude control of the large-inertia large-flexible oblique flying satellite, the property of the satellite is greatly improved, and researching and manufacturing cost of satellite hardware is reduced.

The invention discloses a dynamic-coupling electric control power gear shift hybrid power system and relates to the technical field of automobiles. The system comprises an engine, an integrated starter generator, a main driving motor, a transmission coupling gear shift driving unit and wheels, wherein the engine is connected with the integrated starter generator and is used for outputting power to the integrated starter generator; the integrated starter generator utilizes the power output by the engine to generate electricity; the integrated starter generator starts the engine and outputs power together with the engine; and the engine and the integrated starter transfer coupled driving forces to the wheels by virtue of the transmission coupling gear shift driving unit. The dynamic-coupling electric control power gear shift hybrid power system is compact in structure and efficient in transmission, dispenses with a clutch device, and can be used for realizing the working mode switchover and gear shift without power failure of the hybrid power system.

The invention belongs to the technical field of nondestructive detection of foundry industry, and relates to method for testing nodularity and wall thickness of centrifugal nodular cast iron tubes through ultrasonic and without deconstructions. The technological characteristics are that a certified orientation relationship between a probe and a tested tube can be guaranteed through a structural design of a sound path and a probe frame. The probe frame is motioned compositely and mutually with the tested tube, and coupling medium in a coupling medium chamber guarantees a dynamic coupling of the ultrasonic. A transmitting mode is adopted to test sound speed of ultrasonic shear waves inside a detecting tube wall, simultaneously an infrared temperature probe is used to test temperature of the detecting tube wall, after the sound speed of the ultrasonic shear waves is corrected by the temperature, the nodularity of the tube wall can be calculated out under normal temperature by the sound speed of the ultrasonic shear waves. The sound speed of the ultrasonic shear waves is transformed into longitudinal wave velocity, and a mode of ultrasonic pulse reflection is used to test the thickness of the tube wall. An effect and a benefit of the invention are that two projects can be tested in one test, influences of the thickness and the temperature to the test of the nodularity can be overcome, and a dynamic test can be used to test the whole surface of the testing tube, which increases testing efficiency and coverage rate.

The invention provides a double-motor multi-mode dynamic coupling driving assembly. A first motor 15 and a second motor 3 are taken as systematic power sources. A rotor of the first motor is integrated with a gear ring to form a gear ring rotor 8, and a complete planetary gear structure is inside the gear rotor. The two motors are coaxially arranged, and a lock 4 is used for locking a sun gear and the second motor 3. The double-motor multi-mode dynamic coupling driving assembly is capable of realizing a single driving mode of the first motor 15, a first motor brake energy recovering mode, a double-motor speed coupling driving mode and a double-motor speed coupling brake energy recovering mode. In addition, the double-motor multi-mode dynamic coupling driving assembly is compact in dynamic coupling structure, small in size and large in power density. Under the condition of not changing the size of a main body of the motor 15, output torque of the motor is improved, demand characteristics on large torque of a driving system of a vehicle can be met, and demands on the driving system, with high power density, of a heavy vehicle under the condition that spatial mass is limited can be met.

The invention provides a double dynamic coupling driving structure which utilizes a dual-motor multi-mode coupling driving mode. A double planet rank system which consists of a first planetary gear mechanism (8) and a second planetary gear mechanism (4) is served as a dynamic coupling device for a first motor (15) and a second motor (12). The first motor (15) and the second motor (12) are arranged on the same side and are arranged in an axial parallel mode. A locking device (5) is used for locking and unlocking a planet carrier gear ring (23). A second clutch (10) is used for connecting and disconnecting power transmission between a second decelerator (11) and a power input gear (9). A first clutch (17) is used for connecting and disconnecting the power transmission between a first decelerator (16) and a sun wheel set shaft (9). The dual-motor multi-mode coupling driving structure can achieve multiple operating modes, wherein the multiple operating modes comprise a two motor individual driving mode, a dual-motor rotating speed coupling driving mode and a dual-motor rotating torque coupling driving mode, and different travel requirements of vehicles can be met.

A system and method for controlling tendon-driven manipulators that provide a closed-loop control of joint torques or joint impedances without inducing dynamic coupling between joints. The method includes calculating tendon reference positions or motor commands by projecting a torque error into tendon position space using a single linear operation. The method calculates this torque error using sensed tendon tensions and a reference torque and internal tension. The method can be used to control joint impedance by calculating the reference torque based on a joint position error. The method limits minimum and maximum tendon tensions by projecting the torque error into the tendon tension space and then projecting ii back into joint space.

The invention provides a double-motor double-planet-row dynamic coupling driving structure. A double-planet-row system consisting of a planet gear mechanism I 7 and a planet gear mechanism II 10 serves as a dynamic coupling device of a motor I 22 and a motor II 14; a brake I 6 is used for locking and unlocking a gear ring I 3; a brake II 11 is used for locking and unlocking a planet carrier II 17; a brake III 12 is used for locking and unlocking a sun wheel II 16. The double-motor double-planet-row dynamic coupling driving structure can be used for realizing multiple working modes including a double-motor separate drive mode, a double-motor rotation speed coupling drive mode and a double-motor torque coupling drive mode and can meet the different running requirements of vehicles.

The invention discloses a vehicle power transmission system and a vehicle comprising the same. The power transmission system comprises an engine unit, a transmission unit, a first electric motor generator, an output portion, a power switching device and a second electric motor generator; the transmission unit is suitable for being selectively in dynamic coupling connection with the engine unit; the first electric motor generator is in dynamic coupling connection with the transmission unit; the output portion is constructed to transmit power output from the transmission unit to front wheels and / or rear wheels of the vehicle; the power switching device is suitable for transmitting power or disconnecting power transmission between the transmission unit and the output portion; the second electric motor generator is used for driving the front wheels or the rear wheels. The power transmission system of the embodiment of the invention has three power output sources of the engine unit, the first electric motor generator and the second electric motor generator and multiple driving modes and is high in efficiency.

Under condition for simulating vibration of vehicle body and dynamic action of contact line, the method carries out testing contact pressure between pantograph and bow net as well as dynamic change regulation between pantograph and contact wire. At different speed, and different operating condition of contact line, under dynamic coupling state between pantograph and contact line, the method obtains dynamic change regulation between contact pressure of bow net and vertical displacement of contact point so as to be able to estimate quality of pantograph for receiving current.

The invention relates to a control method for supporting dynamic coupling and decoupling of a train. The control method comprises the steps that A, at the initialization stage, stored coupling state information is obtained; B, offline configuration of a corresponding group is loaded according to the stored coupling state; C, three sets of input signals related to coupling are collected; D, according to the collected signals, whether the coupling state of the train is legal or not is judged, if the coupling state of the train is legal, the step E is executed, and if the coupling state of the train is illegal, the step F is executed; E, whether the current coupling state is consistent with the offline configuration used in the step B or not is judged, and if the current coupling state is consistent with the offline configuration used in the step B, the step H is executed, and if the current coupling state is not consistent with the offline configuration used in the step B, the step G isexecuted; F, emergency braking is applied, and error reporting alarming is conducted; and G, emergency braking is applied, after the situation that the train is stably parked is judged, coupling stateinformation with codes is repeatedly written in, and then the step A is executed for re-initialization. Compared with the prior art, the control method has the advantages of high safety, high reliability, high automation degree and the like.

The invention relates to a hybrid vehicle compound planetary gear set dynamic coupling mechanism. The hybrid vehicle compound planetary gear set dynamic coupling mechanism comprises an engine, a first planetary gear set, a second planetary gear set, a first motor and a second motor; the first planetary gear set is composed of a first sun gear, a first planet carrier, a first tooth ring and a planetary gear; the second planetary gear set is composed of a second sun gear, a second planet carrier, a second tooth ring and a planetary gear; the first tooth ring of the first planetary gear set is connected with the engine through a clutch, the first planet carrier is fixed on a vehicle frame, and the first sun gear is fixedly connected with a rotor of the first motor; the second sun gear of the second planetary gear set is fixedly connected with the first tooth ring of the first planetary gear set, the second planet carrier is fixed on the vehicle frame, the second tooth ring is fixedly connected with a rotor of the second motor, and the second tooth ring is combined with a differential mechanism in order to output power. According to the invention, the function that the engine can directly drive the vehicle, multiple dynamic coupling and mode switching can be achieved, and the implementation structure of the hybrid vehicle compound planetary gear set dynamic coupling mechanism is simple in structure and low in control demand.

The invention discloses a vehicle power transmission system and a vehicle comprising the same. The power transmission system comprises an engine unit, a transmission unit, a first electric motor generator, an output portion and a synchronizer; the transmission unit is suitable for being in dynamic coupling connection selectively with the engine unit; the first electric motor generator is in dynamic coupling connection with the transmission unit; the output portion is suitable for outputting power from the transmission unit; the synchronizer is arranged to be suitable for selective synchronization between the output portion and the transmission unit to output power through the output portion so as to drive wheels of the vehicle. According to the power transmission system of the embodiment of the invention, power output from the engine unit and / or the first electric motor generator can be output from the output portion due to the synchronization function of the synchronizer and the integral power transmission system is compact in structure and convenient to control.

The invention relates to a pressure hybrid power transmission system and a control method, in particular to a motor vehicle transmission system which utilizes, converts and stores energy of a motor vehicle power and transmission system and realizes double power synergy drive of an internal combustion engine and an air motor, and a control method, and belongs to the technical field of vehicle hybrid power. The system consists of an internal combustion engine, a hybrid power control unit, a compressor, a low-power air motor, an internal combustion engine control unit, an overrunning clutch, a high-power air motor, a speed changer, a slave cylinder air evacuation valve, a driving wheel, a brake, a brake slave cylinder, a dynamic coupling device, an electromagnetic clutch, a pneumatic accumulator pressure sensor, a pneumatic accumulator, an air horn and an electromagnetic valve and can recycle the braking energy of a vehicle in a pneumatic energy mode. A pressure system and the internal combustion engine are controlled by an electronic control unit to enable the internal combustion engine to often work in the high-efficiency low-emission region so as to effectively improve the utilization rate of fuel oil of the internal combustion engine, reduce fuel oil consumption and exhaust emission and realize energy conservation and emission reduction of the motor vehicle.

The invention discloses a vehicle power transmission system and a vehicle comprising the same. The power transmission system comprises an engine unit, a transmission unit, a first electric motor generator, an output portion and a synchronizer; the transmission unit is suitable for being in dynamic coupling connection selectively with the engine unit; the first electric motor generator is in dynamic coupling connection with the transmission unit; the output portion is suitable for outputting power from the transmission unit; the synchronizer is arranged to be suitable for selective synchronization between the output portion and the transmission unit to output power through the output portion so as to drive wheels of the vehicle. According to the power transmission system of the embodiment of the invention, power output from the engine unit and / or the first electric motor generator can be output from the output portion due to the synchronization function of the synchronizer and the integral power transmission system is compact in structure and convenient to control.

Method of determining an islanding solution for a power system comprising representing synchronising coefficients between generators and couplings between load buses and generators of the power system as a dynamic graph, calculating eigenvalues and eigenvectors of a graph laplacian describing the synchronising coefficients, identifying reference generators, calculating eigenvectors describing dynamic coupling between load buses and reference generators, using the synchronising coefficient and dynamic coupling eigenvectors to determine proximities between reference generators and other buses, assigning other buses to reference generators according to the proximities, selecting a threshold, identifying buses in weak-areas by using the threshold to identify buses having a proximity to their reference generator sufficiently similar to their proximity to another reference generator, determining the islanding solution by selecting connections to disconnect to split the power system into two or more islands based on an analysis of power flows only on connections to, or between, buses in weak-areas.

The invention provides a set of alternating current-direct current (AC-DC) coupling assessment index capable of reflecting electrical characteristics and moving dynamic characteristics of AC-DC parallel / series-parallel systems, which comprises a static coupling index and a dynamic coupling index. The AC-DC coupling assessment index is suitable for assessing interaction relationship, safety and stability of an AC system and a DC system in a multi-cycle DC-containing complex large-area AC / DC series-parallel system or an AC / DC parallel system with a relatively simple grid structure, can be used for AC / DC power grid planning and running control, provides direct basis for selecting signals of AC / DC coordination control or multi-cycle DC system coordination control, and solves the key technical problems of indefinite analysis target and difficult control object selection of the conventional research method applied to safety and stability analysis and control of the AC / DC parallel / series-parallel power transmission system and the like.

A dynamic coupling time varying failure rate analysis method of a on-orbit space flexible gear mechanism comprises the seven steps that firstly, according to the fact that a shaft in the on-orbit space flexible gear mechanism is an elastic body, a kinetic equation of the flexible shaft is built, and the finite element method is adopted for analysis; secondly, a gear kinetic equation is built; thirdly, a nonlinear kinetics equation of coupling of the flexible shaft and a gear in the on-orbit space flexible gear mechanism is built; fourthly, transmission stimulation analysis is performed on the space flexible gear mechanism; fifthly, the Newmark algorithm is adopted to calculate a dynamic load coefficient; sixthly, a gear bending stress reliability limit state function is built in the on-orbit space flexible gear mechanism; seventhly, dynamic reliability and failure rate analysis are performed on the space flexible gear mechanism. The method solves the problem that reliability calculating accuracy is low because of nonlinear factors of a traditional transfer matrix method and mode superposition method, and has engineering practical value for improving reliability of the on-orbit space flexible gear mechanism and other spacecrafts. The method is also suitable for other flexible gear mechanisms.

The stabilization of biomaterials such as proteins in a nominally dry, hydrophilic glassy matrix is vastly improved by the addition of an appropriate amount of a small-molecule pasticizer such as a glycol or DMSO to the formulation, while maintaining a glass transition temperature (Tg) that is above the storage temperature. By plasticizing the glasses, their ability to preserve proteins is improved by as much as 100 times over the unplasticized glass at room temperature. The plasticizer confers the greatest beneficial effect when it is dynamically coupled into the bulk glass, and this coupling occurs over a fairly narrow range of plasticizer concentration. Methods are described in which a small-molecule plasticizer can be incorporated into a glass made of much larger molecules (e.g. a polymeric glass), with desired dynamic coupling, via a molecule that is believed to act as a dynamic linker. Protein preservation data was obtained from two enzymes, horseradish peroxidase (HRP) and alcohol dehydrogenase (ADH).

An Efficient space light-optical fiber coupling method is realized through the following steps: an optical antenna receives space lights, and then the space lights are converged to be transmitted into a liquid crystal phase controller; the phase of the converged lights is controlled by the liquid crystal phase controller; and the space lights are coupled into a single mode optical fiber. The light signals coupled into the single mode optical fiber are divided into two parts by a power divider, and are transmitted to a communication receiver and a photoelectric detector respectively. The photoelectric detector detects the intensity of the coupled light signals in real time and transforms the received light signals into electric signals and transmits the electric signals into a PID control circuit of the liquid crystal phase controller. The PID control circuit dynamically controls the control voltage of the liquid crystal phase controller as per the intensity of the detected light signals, so as to dynamically control the phase of the converged lights and realize efficient dynamic coupling.

The invention provides a seepage instrument and a test system for testing disturbed seepage characteristics of broken rock. The seepage instrument comprises a frame, a cylinder barrel, a piston, a disturbance ring and a crank sliding block mechanism; the test system comprises the seepage instrument, a detection system, a water supply system, a hydraulic servo system and a drainage system; the water supply system is used for supplying a water source to a double-action hydraulic cylinder in the hydraulic servo system; the hydraulic servo system is used for supplying stable running water to one end of the seepage instrument through the double-action hydraulic cylinder; the other end of the seepage instrument is connected with the drainage system and the detection system. The seepage instrument and the test system are capable of really simulating the complex dynamic coupling environment of the broken coal rock under the influence of mining disturbance and accurately researching the disturbed seepage characteristics of the broken rock.

The invention relates to a driving device of a new energy automobile. The driving device comprises a main driving device. A power output shaft of a first electromotor / generator of the main driving device is connected with a wheel axle speed change mechanism in a power transmission mode. The driving device further comprises a reinforcement energy-saving drive device. The reinforcement energy-saving drive device comprises a flywheel, a dynamic coupling transmission assembly, and a second electromotor / generator. The flywheel corresponds to a flywheel brake during assembly, and is connected with a flywheel axle in a power transmission mode. The dynamic coupling transmission assembly comprises a gear ring, a planetary gear, a planet carrier and a sun wheel, the gear ring is connected with the flywheel axle in a power transmission mode, and the planet carrier is connected with the power output shaft of the first electromotor / generator in a power transmission mode. A power output shaft of the second electromotor / generator is connected with the sun wheel in a power transmission mode. The driving device has the advantages of being high in braking energy recovery efficiency, energy-saving, environment-friendly and the like.

The invention relates to a rapid-densification pressure-coupling dynamic sintering furnace and a sintering method. The rapid-densification pressure-coupling dynamic sintering furnace comprises a furnace body, a heating system, a cooling system, an infrared temperature measurement system and a pressure coupling system, wherein the heating system is positioned in the furnace body, and the furnace body is connected with the cooling system; the heating system and the cooling system are connected with the infrared temperature measurement system, and the pressure coupling system is connected with the furnace body; the heating system is arranged in the furnace body, and the infrared temperature measurement system is connected with the heating system and the cooling system and transmits temperature signals to the heating system and the cooling system; the pressure coupling system comprises a pressure head, a hydraulic cylinder and a pressure control module; the pressure control module comprises a first servo valve, a second servo valve, a constant pressure controller and an oscillation pressure controller, and the pressure coupling system generates the dynamic coupling pressure of frequency and amplitude needed by a material to be sintered. The rapid-densification pressure-coupling dynamic sintering furnace and the sintering method can prepare the material with high density, low defect and high strength and can be widely applied to the sintering process of material preparation.