180 results about "Inertial load" patented technology

A therapeutic device for relieving pain and providing a curative healing effect includes a motor for rotating at least one magnet to generate a magnetic field, micro-vibrations and audible acoustic tones. A shaft couples the at least one magnet to the motor. In one embodiment, the at least one magnet is coupled to the shaft in an offset configuration with respect to a centerline of the shaft thereby generating micro-vibrations in the form of oscillating inertial loads. The therapeutic device includes a light source for generating a photonic light field in an optical light spectrum.

Methods and systems associated with free piston compressors. Fuel is ignited within a combustion chamber to increase pressure. A free piston is displaced within the combustion chamber. The free piston acts as an inertial load to high-pressure gas generated by combustion of the fuel. High pressure gas is pumped from the combustion chamber into a reservoir using the free piston. A spring, magnet, or other mechanism engaging the free piston may be used to assist the process. In the case of a spring, the spring assists returning the free piston to its approximate initial position as the spring expands. In the case of a magnet, the magnet may engage opposite ends of the free piston during the process. Two or more free pistons may be used. The system may be used as a power source for equipment such as a robot.

A method and apparatus for starting an engine in a hybrid vehicle being driven by an electric motor is disclosed. The motor is operably configured to deliver mechanical power through an automatic transmission to at least one vehicle drive wheel to cause an acceleration of the vehicle. The method involves coupling the engine to the motor to cause an inertial load on the motor thus causing the motor to decelerate to a reduced rotational speed to provide a starting torque to the engine for starting the engine, and causing the automatic transmission to change gear ratio to a target gear ratio associated with the reduced rotational speed while causing the motor to decelerate, the motor being operable to deliver increased torque at the reduced rotational speed, thereby generally maintaining the acceleration of the vehicle.

A resistance system, which can be suitable for incorporation in exercise equipment, is a “hybrid” resistance assembly having at least a first and a second resistance unit. The first resistance unit can be of a first type and the second resistance unit can be of a second type. The first resistance unit can be an inertial resistance unit, which incorporates an inertial load that creates resistance influenced by the inertia of a movable mass, such as a rotatable flywheel. The second resistance unit can be a static or non-inertial resistance unit, such as a displacement resistance unit, which incorporates a load that creates resistance influenced by displacement (e.g., linear or rotational displacement) of an input to the displacement resistance unit.

An improved power tool system includes a power tool and an external power supply connected via a cable to provide utility and safety in a hazardous operation such as loading ammunition into a weapon in an environment of flammable materials and extreme environmental exposure. The power tool includes a sparkless motor, a sparkless controller and sparkless switches, in a sealed enclosure with improved heat transfer means. The power tool has improved torque controlling means to mitigate reaction torque to the operator and equipment when starting or stopping highly inertial loads. A sealed enclosure is provided to prevent liquids from entering the motor and controller cavity and includes a thermally conductive path to conduct heat from the motor and controller through the enclosure to cooling fins and a coolant path formed between the fins and an entrapment wall.

A linear traverse mechanism for guiding the spooling of a flexible linear product at high speed, made possible by reducing the inertial load of the mechanism while reducing the angular deflection of the filament. The mechanism includes a pivotally mounted traverse arm controlled by an electric motor having precision indexing ratio characteristics to compensate for linear error. In one embodiment, the linear product is fed through a guiding means carried by said traverse arm to be discharged adjacent a receiving spool. Control of movement of the traverse arm depends upon manually controlled programming means, which compares a desired position of the traverse arm with an actually attained position of the arm.

An active vibration suppression apparatus includes an actuator fixed to a vibration suppression target, an inertial load driven relative to the target by the actuator, and a driving system which drives the actuator based on a first signal corresponding to the vibration, generated or to be generated, of the target. The driving system includes a compensation unit which performs a compensation for the first signal. The compensation, separately or as a composite compensation includes (i) a linear compensation for the first signal to obtain a first compensated signal, and (ii) a nonlinear compensation for the first compensated signal to obtain a second compensated signal. A rate of a change in the second compensated signal to a change in an absolute value of the first compensated signal becoming less with an increase of the absolute value.

An improved power tool system includes a power tool and an external power supply connected via a cable to provide utility and safety in a hazardous operation such as loading ammunition into a weapon in an environment of flammable materials and extreme environmental exposure. The power tool includes a sparkless motor, a sparkless controller and sparkless switches, in a sealed enclosure with improved heat transfer means. The power tool has improved torque controlling means to mitigate reaction torque to the operator and equipment when starting or stopping highly inertial loads. A sealed enclosure is provided to prevent liquids from entering the motor and controller cavity and includes a thermally conductive path to conduct heat from the motor and controller through the enclosure to cooling fins and a coolant path formed between the fins and an entrapment wall.

An aircraft stowage bin assembly includes shear fittings configured to route a content load from the bucket of the bin assembly to the airframe in the event of a forward load condition, such as a crash or severe turbulence. When the forward inertial load factor on the stowage bin is greater than about 1 g, the shear fittings create an efficient load path from the bucket to the airframe which bypasses the large metallic or composite endframes required by the designs of many conventional overhead stowage bins. As a result, significant reductions in overall bulk and weight, as well as lower manufacturing costs, can be realized.

Disclosed is an optimization and restart control method allowing for minimum outage-restart instant impact of a large-inertial-load permanent magnet synchronous motor. Proper start parameters are obtained by updating a pre-start given rotation speed omega * and a position compensation error delta theta and by simulation with a voltage inverter, and an error limitation is provided for the given rotation speed omega *, the position compensation error delta theta, voltage inverter end voltage Uabc and counter electromotive force Eabc at the moment of start; before starting, conditions that the given rotation speed omega * and the position compensation error delta theta need to meet under minimum impact are analyzed according to a torque balance equation; the position compensation error delta theta and a difference delta omega * between the given rotation speed omega * and an actual rotation speed omega are continuously updated until starting begins according to the actual rotation speed and a amplitude difference-phase difference delta between end voltage simulated by an analog controller and the counter electromotive force Eabc; the concept of voltage analog controller is introduced, the difference between the counter electromotive force Eabc and the end voltage Uabc is analyzed, and an area allowing for minimum instant impact is obtained.

An arrangement for suspending a Single Point Mooring Turret from its corresponding vessel, by transmitting a circumferentially uniform axial vertical load without moment through the interface of motion between the vessel and turret, by decoupling mooring system loads, inertial loads and hull deflection induced loads, from transmission across that interface. The arrangement supports the turret through a pendular suspension system which includes bogies, having one or more wheels or rollers per bogie, which roll around the circumference of the moonpool on a rail to allow the bogies to rotate in a horizontal plane which is perpendicular to the center line of the moonpool, and to decouple the bearing loads from radial hull deflection due to ovaling caused by rough seas. Radial flexure is achieved by suspending the turret from the bogie through rocker arms and chains, cables, rods or columns between the bogies and a riser support structure of the turret.

The invention relates to a low-speed wind channel virtual flying test aircraft model designing method and belongs to the field of wind channel virtual flying test model designing. By the method, a control plane driving mode is optimized, and a model operation plane can be changed a control plane automatically to realize a model pneumatic / movement / control coupling function. Weight and inertial load of a model are reduced, balancing of center of mass of the model is realized in the aspect of structural design, and aircraft model reference center, model actual center of mass and virtual flying supporting mechanism rotating center are ensured to be coincident at the same time. The method meets requirements of processing techniques and test equipment, processing accuracy of the model meets requirements on virtual flying wind channel test data measuring accuracy, and the model is stable in running when being applied in virtual flying wind channel tests and convenient to mount and demount.

The invention discloses a method for calculating a load of a wing integral fuel tank. The method comprises the steps of first calculating loads which fuel is subjected to in the X-direction, Y-direction and Z-direction by utilizing the principle that the loads can be overlaid linearly in the structure on-line elastic range; respectively calculating pressure distribution of each end face of the inner wall of the fuel tank under unidirectional overloads; finally overlaying pressure generated by each unidirectional overload, and obtaining pressure distribution of the wing fuel tank; establishing a wing fuel tank local detail finite element model in a full-aircraft overall finite element model, adding the pressure load of each end face of the fuel tank to the finite element model, applying corresponding working condition aerodynamic loads, and performing finite element stress analysis to obtain finite element stress result under each working condition. Under the conditions that the aircraft wing integral fuel tank is not pressurized and an inertial load of the fuel to the fuel tank exists, the method for calculating the load of the fuel tank is used for intensity assessment, and the load which the fuel tank is subjected to can be reflected genuinely.

The invention discloses an online identification method for multiple loads on blades of a large wind power generation set. The method includes following steps that 1, the transformation relation between coordinate systems of the large wind power generation set is set; 2, the arrangement mode of blade root circumferential strain gages and blade axial strain gages is determined; 3, a data processing algorithm is adopted for decomposing the multiple loads on the blades; 4, an outline deformation correction algorithm is adopted for correcting the loads. By means of the method, the multiple loads such as gravitational loads, centrifugal force loads, inertial loads and complex aerodynamic loads can be effectively extracted and identified on line, the information of gravity, centrifugal force, inertia force, aerodynamic force and the like can be extracted from measured data, a computer is adopted for performing real-time computing on the computing algorithms, rapid and accurate online identification of the multiple loads on the large blades is performed, and it is guaranteed that the large wind power generation set operates safely and reliably in the service cycle.

An arrangement for suspending a Single Point Mooring Turret from its corresponding vessel, by transmitting a circumferentially uniform axial vertical load without moment through the interface of motion between the vessel and turret, by decoupling mooring system loads, inertial loads and hull deflection induced loads, from transmission across that interface. The arrangement supports the turret through a pendular suspension system which includes bogies, having one or more wheels or rollers per bogie, which roll around the circumference of the moonpool on a rail to allow the bogies to rotate in a horizontal plane which is perpendicular to the center line of the moonpool, and to decouple the bearing loads from radial hull deflection due to ovaling caused by rough seas. Radial flexure is achieved by suspending the turret from the bogie through rocker arms and chains, cables, rods or columns between the bogies and a riser support structure of the turret.

A linear traverse mechanism for guiding the spooling of a flexible linear product at high speed, made possible by reducing the inertial load of the mechanism while reducing the angular deflection of the filament. The mechanism includes a pivotally mounted guide arm controlled by an electric motor having precision indexing ratio characteristics to compensate for linear error. In one embodiment, the linear product is fed through a guiding means carried by said traverse arm to be discharged adjacent a receiving spool.

The invention discloses a refillable vertical movable gas cylinder, which comprises an austenitic stainless steel liner, a housing, a support structure, at least one gas tube and an exhaust tube, wherein the support structure is connected with the liner, a vacuum space is formed between the liner and the housing, the tail end of the gas tube is communicated with the liner, and a tube body is arranged in the space. The gas tube of the movable gas cylinder disclosed by the invention penetrates through and is arranged in the space between the liner and the housing, so that the outer surface of the gas cylinder has a simple structure, and the inconvenience caused by the winding of the tube body is avoided in handling and use processes. One end of the support structure is fixed, and the other end of the support structure is not fixed, so that the support performance of a low-temperature insulating gas cylinder can be effectively strengthened. In addition, the liner of the movable gas cylinder disclosed by the invention is made of austenitic stainless steel, so that the movable gas cylinder has sufficient strength, can pass the test of shrinkage deformation of stored liquid after the stored liquid is cooled, and can withstand certain inertial load in a moving process. Therefore, low-temperature gas can be safely and reliably handled.

The invention discloses a method for determining towing load of a triangular truss-type pile leg of a self-elevating drilling platform. The method comprises the following steps: S1, designing or detecting relevant parameters of the triangular truss-type leg; S2, dividing into seven basic working conditions to respectively calculate the inertial load; S3, respectively acquiring load proportion factors under each working condition; and S4, acquiring the total inertial load, the total inertial load of a rolling condition and the total inertial load of a pitching condition, which respectively are the linear combination of each load. The method disclosed by the invention does not need a direct method to determine the inertial load, and omits the process of constructing a hydrodynamic model, constructing a quality model, analyzing the motion response and forecasting the motion response. The method disclosed by the invention acquires the inertial load by a simplified method, the whole process is concise and fast, and the result is reliable. The operation that the acquired load loaded to a structural analysis model is very convenient, and the working efficiency of analyzing the strength of the leg under the towing condition is greatly increased.

The invention discloses a configuration designing method for structure under inertial load effect, which is characterized in that a linear model and a RAMP interpolation model are respectively adopted for material density and Young modulus. The method takes integral stiffness maximum (namely softness minimum) of a structure as the goal and the volume of a given material as restriction and utilizes a mathematical programming method or a progressive structural optimization method to carry out the configuration designing for structure under inertial load effect. In each optimization design iteration, sensitivity filtration is carried out after objective function sensitivity is obtained by calculation. The invention has the beneficial effects that the coincident designing result is obtained by using the mathematical programming method and the progressive structural optimization method, and the integral stiffness of the structure under the inertial load effect is increased compared with the designing result of the existing business software.

The invention relates to the field of oil production equipment, in particular to a new generation oil pumping unit with simple structure, safe use, high efficiency and energy conservation. The aim of the invention is to overcome the inherent defects that the prior walking beam oil pumping unit has larger torque factor, poor balance effect, high energy consumption and the like. The invention provides a crank block type oil pumping unit, which consists of double cranks, double connecting rods and slide blocks; with the linear reciprocating movement of the slide blocks, the upward and downward strokes of the oil pumping unit are realized; a balance weight and the load of the oil pumping unit are directly added to the slide blocks so that the movement law of the balancing load is completely in accordance with that of the load of the oil pumping unit so as to achieve a dynamic balance effect, eliminate the influences on a rod mechanism and a speed reducer gear of the oil pumping unit caused by a rotary inertial load, and improve the service lives of the oil pumping unit and the speed reducer; besides, the oil pumping unit has quite outstanding energy conservation effect and saves about50 percent of the energy compared with the prior walking beam oil pumping unit.

A wheel testing system and method are provided that simulates realistically conditions likely to be encountered during operation of vehicle wheels, especially powered drive wheels and wheel-connected structures. The system may include an integral support frame designed to adjustably mount wheels or wheel-connected structures to be tested, a load motor drivingly connected to an inertial load, and an adjustable mounting sled configured to adjustably mount a test wheel or a wheel-connected structure with an hydraulic system actuatable to adjust the location of the test wheel relative to the inertial load to vary or fix the load on the test wheel desired. Speed of the test wheel can be varied or fixed by controlling the speed of the load motor. System measurement and data collection electronics measure a range of selected wheel parameters and gather data for transmission to a processor or non-transitory storage medium for processing and evaluation.

The invention relates to an inertial load starting method and system. The method comprises that a running current of a motor is obtained, and a torque current of the motor is calculated according to the running current of the motor; whether the torque current of the motor is greater than a preset torque limit value is determined; if YES, a power off instruction is executed, and current and torque output to the motor is stopped; the motor continues to rotate in the present rotation direction on the basis of inertia; the rotation direction and speed of the motor are identified continuously, when the rotation direction of the motor is changed to a direction opposite to the present rotation direction, an output torque is applied to the motor according to the rotation speed so that the motor rotates in an accelerated way in the changed rotation direction; and the steps are repeated till the torque current is lower or equivalent to the torque limit value and the rotation frequency of the motor is greater than a preset frequency threshold, and then, the motor is controlled to rotate normally.