Patent application number | Description | Published |
20120215405 | A/D CONVERSION DEVICE AND VIBRATION DAMPING APPARATUS FOR AUTOMOBILE USING THE A/D CONVERSION DEVICE - An A/D conversion device includes a first A/D converter that receives an analog vibration signal corresponding to a vibration detected by a vibration detecting sensor and converts the analog vibration signal to a first digital value, an analog amplifier that amplifies the analog vibration signal and outputs an amplified signal, a second A/D converter that converts the amplified signal to a second digital value, a determiner that determines whether an amplitude of the amplified signal input to the second A/D converter exceeds a range of amplitude that is convertible by the second A/D converter, and a selector that receives the first digital value and the second digital value and output one of the first and second digital values based on the determination of the determiner. | 08-23-2012 |
20120226414 | VIBRATION DAMPING DEVICE AND VEHICLE PROVIDED WITH THE VIBRATION DAMPING DEVICE - A damping device includes a calculator calculating a pseudo vibration to cancel a source vibration transmitted from a vibration source to a position to be damped, using an adaptive control algorithm. The canceling vibration is generated according to the pseudo vibration. A vibration detector detects an error vibration remaining at the position. The adaptive control algorithm is adapted by learning to reduce the error vibration. A frequency recognizer recognizes a frequency of the source vibration from a signal related to the vibration source. The frequency of the vibration is used to determine a frequency of the pseudo vibration. A phase difference identifier identifies a phase difference between the error vibration and the canceling vibration according to the pseudo vibration, and a frequency corrector corrects, according to the phase difference, the frequency of the vibration to eliminate the phase difference. | 09-06-2012 |
20120293094 | VIBRATION DAMPING APPARATUS, ELECTRIC ACTUATOR DRIVING APPARATUS AND VEHICLE - A vibration damping apparatus including reference wave production section that produces a reference wave; a fundamental order adaptive algorithm block that calculates fundamental order adaptive filter factors from a vibration detection signal and the reference wave and produces a fundamental order vibration damping current instruction; an amplitude detection section that calculates a peak current value of the fundamental order vibration damping current instruction; and a fundamental order current excess detection section that derives a fundamental order current upper limit value from the fundamental frequency to produce a fundamental order current upper limit excess signal that is output to the fundamental order adaptive algorithm block, which revises the fundamental order adaptive filter factors in a direction in which the vibration damping current instruction is limited within a range. | 11-22-2012 |
Patent application number | Description | Published |
20140354191 | INVERTER DEVICE FOR DRIVING ELECTRIC MOTOR - An object of the present invention is to provide an inverter device for driving an electric motor, which allows control stability and efficiency to be ensured over a wide region of the speed of the electric motor. The inverter device includes a rotational-speed detection section which detects a rotational speed of the electric motor, a carrier-frequency calculation section which calculates a carrier frequency on the basis of the detected rotational speed, and a carrier-frequency switching section which switches, on the basis of the calculated carrier frequency, the carrier frequency used for performing PWM control on the electric motor. The carrier-frequency calculation section calculates, as the carrier frequency, a frequency increased with an increase in the electric-motor rotational speed detected by the rotational-speed detection section. | 12-04-2014 |
20140354197 | MOTOR CONTROLLER AND CONSTRUCTION MACHINE PROVIDED THEREWITH - There is obtained a configuration capable of rapidly decelerating a motor even if a failure occurs in the communication between a controller and a motor control unit in a motor controller in which a speed command is input from the controller to the motor control unit. A motor controller | 12-04-2014 |
20140354205 | MOTOR CONTROLLER AND CONSTRUCTION MACHINE PROVIDED THEREWITH - There is provided a motor controller capable of suppressing the rotation of a motor at the time of discharging an electric accumulator, and a construction machine provided with the motor controller. A motor controller | 12-04-2014 |
Patent application number | Description | Published |
20080206471 | Paint compositions and coating film forming method - This invention provides coating compositions excelling in storage stability and curability, which comprise carboxyl group- and/or cyclic acid anhydride group-containing compound; polyepoxide; and latent curing catalyst composed of tertiary amine and acidic phosphoric acid ester. | 08-28-2008 |
20090087667 | Multilayer coating film-forming method - The present invention offers a method for forming multilayer coating film excelling in coated appearance by coating water-based base coat paint and acid/epoxy curing type clear coat paint by 2-coat-1-bake system, wherein the water-based base coat paint contains specific water-soluble onium salt compound which is a curing catalyst of the clear coat paint. | 04-02-2009 |
20100255328 | WATER-BASED PAINT COMPOSITIONS - The invention provides water-based paint compositions capable of forming coating film of excellent smoothness, distinctness of image, water resistance and chipping resistance, which comprise aqueous film-forming resin, curing agent and crosslinked resin particles having a core/shell type multilayer structure composed of the core part of a (co)polymer obtained by (co)polymerizing a monomer component comprising 30-100 mass % of polymerizable unsaturated monomer having C | 10-07-2010 |
20110111242 | METHOD FOR FORMING MULTILAYER COATING FILM - The invention offers methods for forming multilayer coating film excelling in smoothness, distinctness of image, water resistance and chipping resistance, the methods comprising successively applying onto a coating object a water-based first coloring paint and a water-based second coloring paint, and simultaneously heating and curing the resultant first colored coating film and second colored coating film, in which the water-based first coloring paint comprises hydroxy-containing polyester resin, curing agent, and water-dispersible acrylic resin which is obtained by polymerization of a monomer component comprising 30-100 mass % of C5-22 alkyl-containing polymerizable unsaturated monomer and 0-70 mass % of polymerizable unsaturated monomer other than the C5-22 alkyl-containing polymerizable unsaturated monomer. | 05-12-2011 |
20120302697 | COATING COMPOSITION, COATED ARTICLE, AND PROCESS FOR FORMATION OF MULTILAYER COATING FILM - The problem to be solved by the present invention is to provide a coating composition that can reduce the heating temperature and shorten the heating time in the coating process, and that has excellent scratch resistance and weather resistance. The present invention provides a coating composition comprising a radically polymerizable unsaturated group-containing compound (A) and a hydroxyl-containing resin (B), the compound (A) being obtained by reacting a caprolactone-modified hydroxyalkyl (meth)acrylate with a polyisocyanate compound, and having an isocyanate equivalent of 300 to 3,800. | 11-29-2012 |