295results about How to "High inertia" patented technology

Coal based carbon foams that are produced by the controlled beating of coal particulate in a mold and under a non-oxidizing atmosphere and subsequently graphitized have been found to provide excellent electrode materials for electrochemical cell applications.

A process for producing a clean wax product includes contacting, at an elevated temperature between 180° C. and 250° C. and at an elevated pressure between 10 bar and 40 bar, a synthesis gas comprising hydrogen and carbon monoxide with a cobalt slurry phase Fischer-Tropsch synthesis catalyst, in a slurry phase Fischer-Tropsch synthesis reaction. The catalyst is obtained from a successful catalyst support. A clean wax product containing less than 50 mass ppm submicron particulates of cobalt, is produced.

The present invention introduces a new concept of applying a parallel mechanism in automated fiber placement for aerospace part manufacturing. The proposed system requirements are 4DOF parallel mechanism consisting of two RPS and two UPS limbs with two rotational and two translational motions. Both inverse and forward kinematics models are obtained and solved analytically. Based on the overall Jacobian matrix in screw theory, singularity loci are presented and the singularity-free workspace is correspondingly illustrated. To maximize the singularity-free workspace, locations of the two UPS limbs with the platform and base sizes are used in the optimization which gives a new design of a 4DOF parallel mechanism. A dimensionless Jacobian matrix is also defined and its condition number is used for optimizing the kinematics performance in the optimization process. A numerical example is presented with physical constraint considerations of a test bed design for automated fiber placement.

A torsional vibration damper includes front and rear hub members with an inertia mass between the two hub members. Annular elastomeric rings are positioned between the front and rear hub members and the inertia mass holding the inertia mass. Fasteners extend through the front hub member, the inertia mass, and fixed to the rear hub member. A clearance between the fastener and the inertia mass allows relative motion to absorb torsional vibration.

The invention relates to a control method of a microgrid bidirectional converter based on a virtual synchronous machine and stability analysis thereof. An integrator is added in a damping link of a rotor motion equation, and an angular frequency deviation value is fed back and compensated, so that the error-free control of alternating current subnet frequency in a microgrid off-grid mode is achieved. In consideration of the bidirectional transmission characteristic of the converter, a control target is switched into a direct-current voltage from an alternating-current frequency in real time bychanging a virtual mechanical active power reference value given mode, and stable control of direct-current bus voltage is achieved. By establishing a power inner ring and a voltage/frequency outer ring small signal model, transfer functions of the converter in a frequency control mode and a direct current voltage control mode are respectively solved, and stability analysis is performed. The control method of the microgrid bidirectional converter based on a virtual synchronous machine and the stability analysis thereof can well achieve the frequency error-free adjustment of the frequency andthe stable control of the direct current voltage under the off-grid mode.

The sensor electrode has a sensing surface intended to contact a liquid medium for continuous measuring, in combination with a counter electrode and a reference electrode, of the hydrogen peroxide concentration over a concentration range from 0.005 mole/liter to 3 mole/liter, said sensor consisting of a carbon electrode having an open circuit potential between -65 and -85 mV, said open circuit potential being measured with respect to a Ag/AgCl/saturated Cl- reference electrode in an alkaline solution having a pH between 10.5 and 14, said solution containing hydrogen peroxide at a concentration of more than 0.5 mole/liter.

A transmission system of a hybrid electric vehicle may include first and second motor/generators, a planetary gear set, first and second output gears, and first and second clutches on an axis of an input shaft receiving torque of an engine in a transmission housing, a hollow shaft disposed at a radial exterior of the input shaft and adapted to transmit the torque of the engine or torque of the first motor/generator to the second output gear, an outer shaft disposed at a radial exterior of the hollow shaft and adapted to transmit torque of the second motor/generator to the first output gear, and a rear cover coupled to a rear end portion of the transmission housing, in which the planetary gear set includes a sun gear, a planet carrier and a ring gear as rotation elements thereof.

An outboard motor includes a vertical multi-cylinder engine, a fly-wheel magneto device, a partition plate, and a ventilation fan. The vertical multi-cylinder engine is disposed in an engine cover and comprises a crank case and a crank shaft, the crank shaft being rotatably disposed and protruding upward from the crank case. The fly-wheel magneto device is disposed on the protruding portion of the crank shaft. The partition plate is disposed in the engine cover and partitions the inside of the engine cover into an engine air-inlet space and a space including a heat-generating source, the engine air-inlet space being disposed at the upper portion of the engine cover, and the space including a heat-generating source being disposed at the lower portion of the engine cover. The ventilation fan is disposed in the lower space below the partition plate.

The invention discloses a multifunctional intelligent underwater robot which comprises a mechanical system, an electronic system and a software system. The mechanical system comprises a frame structure, a sealed cabin body, a camera, executing mechanisms and an accessory; the electronic system consists of a main control switch, a main power supply, a cable and electric appliances, and an interactive interface is provided for a main control computer in the cabin body, various sensors and peripheral equipment; the software system comprises two layers of frameworks including an upper computer and a lower computer, the upper computer system is an AUV action command center and is responsible for processing information uploaded by the lower computer, judging the information to conduct action decision and then sending instructions to the lower computer, and the lower computer then distributes the instructions to a propeller, a mechanical arm, a pneumatic device and other executing mechanisms to complete set tasks; and in the process from information to strategies, an AUV executes different tasks according to different priorities until the AUV floats from the water surface finally. The multifunctional intelligent underwater robot has the characteristics of being large in moving range and flexible, and can be widely applied to military and civil fields.

A transmission system of a hybrid electric vehicle may include first and second motor/generators, a planetary gear set, first and second output gears, a brake, a rotation restricting member on an axis of an input shaft receiving torque of an engine in a transmission housing and a hollow shaft disposed at a radial exterior of the input shaft and adapted to transmit the torque of the engine or torque of the first motor/generator to the second output gear, an outer shaft disposed at a radial exterior of the hollow shaft and adapted to transmit torque of the second motor/generator to the first output gear, and a rear cover coupled to a rear end portion of the transmission housing.

A single-dose package for transdermal therapeutic systems or film-shaped administration forms, in the form of a tear-open sealed-edge pouch with a completely surrounding and continuous non-peelable sealing surface. The single-dose packages comprise two packaging material elements, which are arranged one lying an top of the other and form the upper side and underside of a pouch that contains the product. At least one packaging material element is a tear-resistant film laminate with an at least three-layer structure, wherein at least one layer of the packaging material elements is a metal layer. The single-dose package also has a linear weakening, which lies in the sealing area, does not touch the edge of the package and extends in the direction of the weaker tear resistance of the upper side and underside and the linear form of the anisotropically tear-resistant plastic.

The invention discloses an electromagnetic exciter and a screen sounding device. The exciter includes a housing, a vibrator assembly and a stator assembly, The stator assembly and the vibrator assembly are housed in the housing, the vibrator assembly is suspended in the housing through an elastic element, the vibrator assembly comprises a coil and a core post arranged in the coil, the vibrator assembly is located in a magnetic field of the stator assembly, and the stator assembly comprises a Helbeck permanent magnet array.

A robot control device according to an embodiment includes: an observer receiving the angular velocity of the motor and the current command value, and estimating an angular acceleration of the link, and angular velocities of the link and the motor from a simulation model of an angular velocity control system of the motor; a first feedback unit calculating an axis torsion angular velocity from a difference between the angular velocities of the link and the motor estimated by the observer, and giving feedback to the angular velocity control system; a second feedback unit feeding back the angular acceleration of the link estimated by the observer to the angular velocity control system; and a first feedback constant calculating unit compensating an end effector load mass and increases inertia at the second feedback unit when an end effector load in the nonlinear dynamic model has low inertia.

The invention relates to a multi-locomotive fixing and rolling test platform which comprises two or three test platforms. Each test platform comprises a pair of counter-force frames (1), an upper axle (2) and test unit groups, wherein the test unit groups comprise test units having same number with single locomotive wheel pairs (41). All the test units adopt the structure that shafts of a track wheel pair (43) for supporting the locomotive wheel pairs (41) are connected with shafts of winding asynchronous motors (36), and the diameter/length ratio of the winding asynchronous motors is larger than 1; stator windings of all the winding asynchronous motors (36) of each test unit group are connected with a power grid by a three-phase switch I (63) of a stator three-phase bus bar (53) of each asynchronous motor, and rotor windings are connected in parallel to a rotor three-phase bus bar (49) of each asynchronous motor; and the rotor three-phase bus bars of the asynchronous motors of all the test unit groups are connected by a breaker (62). The test platform carries out a mutual accompanying test by multiple locomotives and has reliable synchronization and convenient test and can form the mutual feedback of energy, reduce the capacity of a power supply and save energy sources and cost.

The invention discloses a medical sewage disinfection and purification device with a waste separation function. The medical sewage disinfection and purification device comprises a box body, wherein acircular through groove is arranged in the middle of the rear side of the box body; the inner periphery of the circular through groove is rotatably connected with the outer periphery of a rotating plate through a bearing; the front side of the rotating plate is fixedly connected with the rear end of a coaxial transverse shaft; the front end of the transverse shaft is rotatably connected with the corresponding inner wall of the box body; the outer periphery of the transverse shaft is uniformly hinged with one sides of a plurality of net plates; and scraping plates are fixedly arranged at the other sides of the net plates respectively. The medical sewage disinfection and purification device is simple in structure and ingenuous concept; the net plates are used for primary filtration, and finefiltering holes are used for advanced filtering, so filtering is hierarchically performed, and the filtering efficiency can be accelerated; impurities primarily filtered out are thrown out through rotation inertia and self gravity of the net plates, and the impurities in holes of the net plates are shaken off through vibration, while the impurities filtered out of the fine filtering holes are scraped off through the scraping plates, so effective filtering of the fine filtering holes is kept, and the filtering efficiency is further improved; thus, the medical sewage disinfection and purification device can meet the market requirements, and is applicable to popularization.

An improved phosphate-type refractory investment material and method for making solid investment molds especially useful for casting high melting point metals and alloys, such as platinum and the like. The material consists essentially of one or more phosphate salts, a water soluble acidic constituent, and refractory powder. The material can be prepared as a dry powder blend which is easily shipped to the user and mixed with water at the time of investing the flask. Alternatively, the salt and/or acidic constituent can be combined with the refractory powder at the time of mixing with water.

The invention provides an environment-friendly leather surface automatic spraying and coating system. The technical problems that the structure of an existing spraying and coating machine is too simple to adjust the spraying area, and the spraying and coating effect is poor are solved. The environment-friendly leather surface automatic spraying and coating system comprises a base, a spraying box is fixed to the middle of the base, an input port is formed in one end of the spraying and coating box, and an outlet port is formed in the other end of the spraying and coating box. A first rotary roller is horizontally and rotatably arranged at one end of the base, the end part of the first rotary roller is connected with a dynamic structure which can drive the first rotary roller to rotate, a second rotary roller is horizontally and rotatably arranged at the other end of the base, and a conveyor belt for transporting leather is arranged between the second rotary roller and the first rotary roller. A lifting plate is arranged in the spraying and coating box, a main shaft is arranged vertically on the lifting plate, the upper end of the main shaft is connected with a rotating motor which can drive the main shaft to rotate, the lower end of the main shaft is connected with a rotary table, a spraying head is arranged on the rotary table through an adjusting assembly, and the spraying head communicates with a material storage tank through a conveying pipe. The environment-friendly leather surface automatic spraying system has the advantages of good spraying and coating effect.