303 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.

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.

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 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 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.

A power transmission line wind vibration control method based on power transmission line iron tower and lead or ground wire integrated system model calculation and multi-dimensional random gust field simulation includes the steps: firstly, generating a wind load time history sample by the aid of harmonic synthesis to simulate a wind field based on a multi-dimensional random vibration theory; secondly, establishing a dynamic model of an integrated system of a tower, lead or ground wire and wind vibration control device, analyzing the initial state of a lead or a ground wire and setting boundary conditions of the model; thirdly, converting wind load into wind pressure, loading a power transmission tower and line system and calculating time history of axial stress and displacement of an iron tower rod by the aid of simulation software; and fourthly, analyzing and judging wind vibration strength and wind vibration suppression effects and improving control effects by the aid of an optimization scheme. On the basis of rigid-flexible dynamic coupling among a power transmission line tower, the lead and the ground wire and fluid-solid coupling between a random gust wind field and a tower and lead or ground wire system structure, the determined wind vibration control method has better implementation effects.

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 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.

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 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.