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.

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.

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.

An active vibration suppression apparatus includes a rotating actuator which is fixed to a vibration suppression target and generates a torque in a rotational direction, an inertial load which is connected to the actuator and moves in the rotational direction relative to the vibration suppression target in accordance with a torque of the actuator, and a driving circuit for generating a driving command signal for controlling the inertial load and driving the rotating actuator in accordance with the driving command signal. The rotating actuator rotates / drives the inertial load with a generated torque, and reduces vibrations produced in the vibration suppression target by applying a drive reaction force generated upon rotating / driving the inertial load as a control torque to the vibration suppression target.

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.

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.

In an internal combustion engine of variable compression ratio type, a piston control mechanism is employed which comprises a lower link rotatably disposed on a crank pin of a crankshaft of the engine, an upper link having one end pivotally connected to the lower link and the other end pivotally connected to a piston of the engine, a control link having one end pivotally connected to the lower link; and a position changing mechanism which changes a supporting axis about which the other end of the control link turns. When the piston comes up to a top dead center, a compression load is applied to the control link in an axial direction of the control link in accordance with an upward inertial load of the piston.

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.

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 microphone and orientation sensor system includes a microphone and an orientation sensor. The microphone has a diaphragm. The orientation sensor includes an inertial load member having a first end and a second end opposite the first end. The sensor also includes at least one electrode positioned adjacent to the inertial load member. The sensor further includes a beam. The inertial load member pivots about the beam, and the pivoting of the load member causes a change in a distance between the first end and the electrode resulting in a change in capacitance between the first end and the electrode. The diaphragm and electrode are formed from a common layer of material.

An apparatus for preventing a lid from being undesirably opened. The lid is rotatably coupled to a vehicle tray. The apparatus includes a spring provided under the vehicle tray; and a stopper provided under the vehicle tray. The stopper is coupled at one end to the spring, so that, when a force greater than a predetermined force is applied to the stopper in a direction away from the spring, the stopper overcomes the elastic force of the spring and slides to a position at which it prevents the lid from opening. One-way sliding sawteeth are provided on a lower surface of the vehicle tray and on an upper surface of the stopper. The sawteeth engage with each other when the stopper slides to the position at which it prevents the lid from opening, such that the stopper is prevented from returning to its original position.

A therapeutic module 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. 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 module includes a light source for generating a photonic light field in an optical light spectrum.

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.

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 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.