Class / Patent application number | Description | Number of patent applications / Date published |
267140150 | With electronic or magnetic control | 13 |
20080246201 | VIBRATION ISOLATION DEVICE, ARITHMETIC APPARATUS, EXPOSURE APPARATUS, AND DEVICE MANUFACTURING METHOD - A vibration isolation device which damps vibration of an object includes a vibration isolation unit which can be activated in a plurality of vibration isolation modes, an acquisition unit which acquires estimate information associated with vibration of a floor, and a control unit which selects a vibration isolation mode from the plurality of vibration isolation modes in accordance with the estimate information acquired by the acquisition unit, and activates the vibration isolation unit in the selected vibration isolation mode. | 10-09-2008 |
20080272528 | Vibration Control Mount Apparatus - A vibration control mount apparatus capable of absorbing an initial pushing-up load based on a shock and capable of promptly damping a residual vibration generated after the shock. The vibration control mount apparatus includes a case body mounted on a turning frame, a mount rubber is mounted on the case body. A magnetic viscous fluid of which viscosity is changed by a magnetic filed is sealed in a sealing chamber in the case body. A movable body supported by the mount rubber has a damper plate which moves while receiving resistance from the magnetic viscous fluid in the sealing chamber. Viscosity variable controlling device forms the magnetic field in accordance with vibration acceleration detected by the acceleration detecting device to change the viscosity of the magnetic viscous fluid. | 11-06-2008 |
20080296819 | Controlling vibrations - In order to control vibrations of two parts of a piece of machinery, a variable force may be generated to oppose the vibrations, with the variable force being generated under control of a controller on the basis of an iterative relationship, the iterative relationship being such as to generate the force of one iteration using a controller output signal in frequency domain vector form derived from the controller output signal of the immediately previous iteration in frequency domain vector form plus a frequency domain vector quantity derived from the resultant vibration of more than one previous iteration. | 12-04-2008 |
20090045560 | Engine natural vibration frequency detection method, active vibration isolation support device control method, engine natural vibration frequency detection apparatus, active vibration isolation support device control apparatus, active vibration isolation support device, and vibration frequency detection apparatus for vibrating body - The natural vibration frequency of a roll resonance which does not occur since the engine rotation number is high in a normal operation range of an engine is detected at the time of engine start or stop when the engine rotation number is lower than the normal operation range, and thus the natural vibration frequency of the roil resonance can be detected with a good accuracy. A current is generated by an electromotive force of an actuator of the active vibration isolation support device excited by the engine immediately before stopping its rotation, and the frequency of the current is used to detect the natural vibration frequency of the engine, and the roll resonance of the engine is suppressed by controlling the operation of the active vibration isolation support device at the time of engine start based on the natural vibration frequency, thereby not only eliminating the need of a specific frequency detection sensor, but also effectively reducing the vibration at the time of engine start when the roll resonance becomes strong. | 02-19-2009 |
20090121399 | VIBRATION REDUCTION SYSTEM EMPLOYING ACTIVE BEARING MOUNTS - A vibration reduction system is provided for use in conjunction with a rotational device including a stationary body, a rotating body, and a first bearing assembly disposed between the stationary body and the rotating body. The vibration reduction system includes a first plurality of bearing mount actuators residing between the stationary body and the first bearing assembly. The first plurality of bearing mount actuators is configured to adjust the radial position of the first bearing assembly. The vibration reduction system further includes a vibration sensor, which is coupled to the stationary body, and a controller, which is coupled to the vibration sensor and to the first plurality of bearing mount actuators. The controller is configured to reduce vibrations sensed by the vibration sensor by selectively adjusting the radial position of the first bearing assembly utilizing the first plurality of bearing mount actuators. | 05-14-2009 |
20090302516 | SYSTEM, METHOD AND APPARATUS FOR CONTROL SURFACE WITH DYNAMIC COMPENSATION - An aircraft flight control surface has an actuator that employs a magneto-rheological (MR) fluid for dynamically adjusting the responsiveness of the control surface. The MR fluid may be used as a primary or secondary control in the event that a primary control actuator fails. In the event of system failures associated with the primary control, an alternate level of performance may be provided by the secondary control and communicated to the overall flight control system. This permits the control surface actuator to reactively and proactively respond to changes associated with the flight control system. If the design fails, it also permits a safe mode of operation should the ability to dynamically adjust the viscosity of the MR fluid be negatively impacted. The safe mode of operation may involve a reduced level of performance. | 12-10-2009 |
20100096789 | MULTISTATE SWITCHABLE ENGINE MOUNT AND SYSTEM - A vehicle engine mount system comprises a housing and an inertia track assembly that forms a first fluid chamber with an upper compliant member and a second fluid chamber with the second end of the housing. The inertia track assembly has first and second passageways therethrough for conducting fluid between the first and second fluid chambers. The first passageway has a substantially greater flow resistance than the second. First and second switches are coupled to the first and second passageways, respectively, for selectively enabling the first and second switches to control fluid displacement between the first fluid chamber and the second fluid chamber. | 04-22-2010 |
20100109219 | Modular interface for damping mechanical vibrations - Interfaces for damping mechanical vibrations are used, for example, for damping vibrations in the automotive or aerospace industry. The interfaces have a base connection element, a load connection element and a support element, with the support element being connected to the base connection element via a pretensioning device. A first energy converter system extends between engagement points on the base connection element and engagement points on the load connection element. A second energy converter system extends between engagement points on the support element and engagement points on the load connection element. | 05-06-2010 |
20100164152 | PORTABLE ELECTRONIC DEVICE WITH AUTOMATIC PROTECTION CAPABILITY - A portable electronic includes a main body defining a plurality of mounting holes at corners; a plurality of mounting modules; a plurality of resilient members compressed and mounted in mounting holes of the main body by the corresponding mounting modules; and a control module. The control module includes a MCU; an acceleration transducer connected to the MCU to sample a real-time acceleration value, and a memory connected to the MCU to store a critical acceleration value. The control module controls the mounting modules to release the compressed resilient members so as to eject out the resilient members from the main body, when the real-time acceleration value is larger than the critical acceleration value. | 07-01-2010 |
20110316207 | Method and Apparatus for Improved Vibration Isolation - A vibration isolator having a housing defining a fluid chamber, piston assembly, tuning passage, and a switchable fluid path assembly for changing the isolation frequency of the vibration isolator. The piston assembly is resiliently disposed within the housing. A vibration tuning fluid is allowed to flow within the housing. Actuation of a valve in the switchable fluid path assembly selectively controls fluid flow within the fluid path of the switchable fluid path assembly. | 12-29-2011 |
20130127098 | VARIABLE DIFFERENTIAL MOUNT APPARATUS USING MAGNETORHEOLOGICAL ELASTOMER - Disclosed is a variable differential mount apparatus using a Magnetorheological Elastomer (MRE). The apparatus includes a core, a coil, a plurality of MRE supports, and a magnetic path formation member. The core has a plurality of arms disposed thereon. The coil is wound on the plurality of arms, respectively. The plurality of MRE supports are disposed to face the plurality of arms, respectively. The magnetic path formation member is disposed outside the plurality of MRE supports. More specifically, a current is applied to coil to vary the degree of stiffness of the variable differential mount based on a particular driving condition to allow for increased handling and comfort. | 05-23-2013 |
20130328254 | TORQUE ROD AND ENGINE MOUNTING SYSTEM FOR USING SAME - A torque rod ( | 12-12-2013 |
20160040744 | COMPOSITE DAMPING MATERIAL - Provided is a damping material capable of exhibiting a damping effect more effective than that of a conventional technique. A composite damping material of the present invention is a material in which a needle-like dielectric having a high dielectric constant made of a titanium dioxide and a piezoelectric fiber made of an organic material are mixed in a polymer material serving as a matrix, and preferably a material in which a flat filler made of an inorganic material and conductive fine particles are further mixed. A material made of a cellulose fiber can be used preferably as the piezoelectric fiber. | 02-11-2016 |