Fuji Xerox Co., Ltd.

Hitachi, Ltd.

Hitachi Astemo Ltd.

Hitachi Automotive Systems, Ltd.

Nec Corporation

Fujifilm Corporation

Shinji Seto

Takashi Yagi

Kenji Hiraku

Hirotake Sasaki

Nobuyuki Ichimaru

Ryusuke Hirao

Hiroaki Hashimoto

Isamu Tsubono

Shingo Nasu

Daisuke Ebisawa

Shigeru Umehara

Kotaro Maeda

Takahiro Suzuki

Hiroshi Nakano

Tadashi Suzuki

Hirofumi Nakamura

Michiaki Murata

Hideo Kawamoto

Takashi Ogawa

Naoki Morita

Kenichiro Matsubara

Junya Takahashi

Torahiko Kanda

Shunsuke Mori

Kimio Nishino

Masaki Koyama

Wataru Yokoyama

Hiroyuki Usami

Yasuhiro Otsuka

Shunsuke Aritomi

Yuichiro Tanaka

Toshinobu Hamazaki

Yohei Katayama

Masaki Kanai

Yoshihira Rai

Yosuke Tanabe

Fuminori Takizawa

Takayasu Sakashita

Yoshinori Kawai

Shuhei Nagata

Yasushi Takano

Yasutoshi Hirabayashi

Kan Kobayashi

Yasuhide Takeda

Tomoaki Fujibayashi

Masahiko Sekimoto

Baku Nishikawa

Manabu Takamoto

Kiyoshi Okumura

Naofumi Harada

Masayuki Uchiyama

Tatsuro Kobune

Yuji Nishimura

Kohei Murakami

Tomoyuki Ri

Atsuji Watanabe

Daisuke Kojima

Yousuke Tanabe

Ryu Kai

Norio Nakazato

Motohiro Hirao

Teruaki Yamanaka

Ryuichi Suka

The present invention aims to provide a valve driving device that suppresses an increase in size and improves thrust. The present invention includes a bobbin including a body portion, a solenoid coil wound around the body portion of the bobbin, an armature arranged on a radially inner side of the bobbin and fixed to a rod, an anchor that covers one side in an axial direction of the armature at a position on the radially inner side of the bobbin, a yoke partially arranged between the bobbin and the anchor, and a cylindrical member arranged between the bobbin and the armature. The bobbin includes a recessed portion on the radially inner side, and a part of the cylindrical member is inserted into the recessed portion. A part of the cylindrical member and the recessed portion are arranged so as to be laminated in the radial direction.

Valve driving device and shock absorber using the same

Provided fire an electric parking brake device and an electric parking brake control method that can apply an appropriate clamping force by accelerating data measurement and by suppressing influence of load fluctuation during idle running. For this end, the electric parking brake device of the present invention includes: a disc rotor; brake pads that are pressed to the disc rotor; an electric motor that imparts a thrust to the brake pads; a current detection unit that detects a motor current of the electric motor; and a brake control device that controls the electric motorbased on the motor current. The brake control device controls the electric motorbased on a current change amount of an electric current during a period from a point of time that the motor current becomes a peak current to a predetermined point of time.

Electric parking brake device and electric parking brake control method

An object of the present invention is to estimate a center-of-gravity position and inertia moment of a trailer and supply the center-of-gravity position and inertia moment for control of an articulated vehicle so as to enable further stabilization of a posture of the articulated vehicle during traveling. A vehicle control device of the present invention is a vehicle control device mounted on a tractor which pulls a trailer, and is provided with: a steering angle control unit that controls a steering angle of wheels of the tractor independently of steering by a driver; and a trailer characteristic estimation unit that estimates a characteristic of the trailer based on a behavior of the tractor during wheel steering by the steering angle control unit.

Vehicle control device and characteristic estimation method

The solenoid coil includes a coil having a first end surface and a second end surface on its both ends in an axial direction, a member which is in contact with the first end surface, and has a groove through which the wire material of the coil passes, and an insulating resin formed to coat at least an outer circumferential surface and the second end surface of the coil. The resin with a substantially U-shaped section is continuously coated on at least a part of an inner circumferential surface of the coil via an area from the outer circumferential surface to the second end surface.

Solenoid coil

An object of the present invention is to provide a vehicle motion state estimation device and method that can estimate the vertical motion state amount with high accuracy by taking into consideration vertical force in which the frictional force acting in the front-rear direction or lateral direction of the wheel acts on the vehicle body due to the geometry of suspension. A vehicle motion state estimation device in a vehicle in which a wheel and a vehicle body are coupled via a suspension, the vehicle motion state estimation device including: a vertical motion-caused wheel speed component estimation unit that estimates a wheel speed component caused by vertical motion of the vehicle; a vertical force estimation unit that calculates vertical force in which frictional force of the wheel caused by motion of the vehicle acts on the vehicle body by geometry of the suspension; and a vertical motion estimation unit that estimates a state amount of vertical motion of a vehicle, in which the vertical motion estimation unit estimates a state amount of vertical motion of the vehicle based on a wheel speed component from the vertical motion-caused wheel speed component estimation unit and vertical force acting on the vehicle body from the vertical force estimation unit.

Vehicle motion state estimation device, vehicle motion state estimation method, and vehicle

Provided are a vehicle, a vehicle motion state estimation apparatus, and a method for estimating a vehicle motion state capable of highly accurately estimating a state quantity of a bounce motion of a vehicle having a non-linear suspension characteristic. The vehicle motion state estimation apparatus in a vehicle, in which wheels and a vehicle body are coupled via a suspension, includes a bounce motion estimation unit that estimates and outputs a state quantity of a bounce motion of the vehicle based on traveling state information of the vehicle, and a correction value estimation unit that calculates a correction value to correct an output the bounce motion estimation unit. The correction value estimation unit calculates the correction value in consideration of a non-linear characteristic of the suspension.

Vehicle, vehicle motion state estimation apparatus, and method for estimating vehicle motion state

In an air suspension system, starting of a compressor is facilitated in a condition in which there exists a pressure difference. There is provided an air suspension system in which air compressed by a compressor is supplied to a plurality of air chambers provided between a vehicle body side and a wheel side and configured to perform vehicle height adjustment in accordance with the supply and discharge of air. The compressor has a needle connected to a piston and extending in a moving direction of the piston, and an armature reciprocating the needle in the moving direction of the piston.

Air suspension system

A liquid droplet ejection head includes: a main body member that includes a nozzle that ejects a liquid droplet, a first pressure chamber that is linked to the nozzle, and a second pressure chamber that is linked to the nozzle; a first piezoelectric element that pressurizes the first pressure chamber by applying a first voltage, and causes the liquid droplet to be ejected from the nozzle; and a second piezoelectric element that pressurizes the second pressure chamber by applying a second voltage which is equal to or higher than the first voltage, and deflects the direction of the liquid droplets ejected from the nozzle.

Liquid droplet ejection head and liquid droplet ejection apparatus

A switchgear driving device has a rod coupled to a movable electrode; an operation piston connected to the rod; and an operation cylinder in which an operation piston slides. A main control valve controls the pressure of the hydraulic oil in the operation cylinder. A turning-on pressure accumulation piston slides inside a turning-on pressure accumulation chamber; and a turning-on pressure accumulation spring imparts a driving force to the turning-on pressure accumulation piston to pressurize the hydraulic oil within the turning-on pressure accumulation chamber. A turning-off pressure accumulation piston slides inside a turning-off pressure accumulation chamber. A turning-off pressure accumulation spring imparts a driving force to the turning-off pressure accumulation piston to pressurize the hydraulic oil in the turning-off pressure accumulation chamber. A spring case accommodates the turning-on pressure accumulation spring and the turning-off pressure accumulation spring, wherein the turning-off pressure accumulation spring is arranged inside the turning-on pressure accumulation spring.

Hydraulic drive for a switchgear

A droplet ejecting apparatus includes: an ejecting section having a plurality of nozzles arranged along an intersecting direction with a transport direction of a recording medium. Each nozzle ejects a main droplet and a sub-droplet smaller than the main droplet consecutively. Each nozzle can change a deflection amount in an ejecting direction of the main droplet along the intersecting direction. A control section performs, in a case where a defective nozzle exists in the nozzles, a control of deflecting the ejecting directions of the main droplets ejected from a nozzle positioned within a predetermined distance from the defective nozzle toward a landing position of a main droplet that should have ejected from the defective nozzle.

Droplet ejecting apparatus, image forming apparatus, and non-transitory computer readable medium storing program

Provided is an engagement position storage device capable of detecting a clutch engagement position of a vehicle finely and a brake system including such a device. In an engagement position storage devicethat stores an engagement position of a clutch to engage and disengage power of a vehicle, when the vehicle becomes a traveling state in predetermined duration after acceleration in a front-back direction of the vehicle changes, the engagement position storage devicestores a clutch engagement position based on a clutch position detected when the acceleration changes. A brake systemincludes a wheel latching mechanismthat latches wheels of a vehicle by driving a propelling memberby driving devicesand; and a controllerthat controls driving of the propelling memberof the wheel latching mechanismbased on a clutch engagement position stored in the engagement position storage device

Brake system

An object of the present invention is to obtain a brake system that can generate appropriate braking force without influence of temperature. A brake system includes: a piston that presses pressing members; a motor that moves the piston; a current detection unit that detects current flowing in the motor; a storage unit that stores a correspondence relation between idle running current and motor stopping current; a motor stopping current setting unit that sets the motor stopping current using the storage unit and the idle running current; and a control unit that stops to supply the current to the motor when the current flowing in the motor reaches the motor stopping current. The correspondence relation is set so that the rate of change of the motor stopping current relative to the idle running current becomes smaller when the idle running current is small than that when it is large.

A drive waveform generation device includes a generation unit that generates a drive waveform having, as each cycle, a first waveform for droplet ejection or a second waveform for vibrating a liquid meniscus by selecting from a first period having a first potential that is lower than a reference potential, a second period following the first period continuously and having a second potential that is higher than or equal to the reference potential, a third period following the second period continuously and having a third potential that is higher than the first potential and lower than the second potential, and a fourth period following the third period continuously and having a fourth potential that is higher than the first potential and lower than the third potential, the first period, the second period, the third period and the fourth period being included in a fundamental waveform as defined herein.

Drive waveform generation device and image forming apparatus

A droplet driving control device includes: an output unit which outputs, at droplet ejection timing, a driving waveform for ejecting each droplet at a requested droplet ejection period, the waveform being a reference driving waveform including a plurality of pulse signals which can be set ON or OFF individually; a determination unit which determines whether the droplet ejection period has to be changed or not; an adjustment unit which sets each of the pulse signals of the reference driving waveform ON or OFF selectively based on a determination result of the determination unit to adjust the reference driving waveform to an adjusted driving waveform; and a droplet ejection control unit which ejects each droplet by use of the adjusted driving waveform adjusted by the adjustment unit.

Droplet driving control device and image forming apparatus

Provided is a droplet ejection apparatus including: an ejecting mechanism in which plural ejection units which eject droplets from a nozzle to a transported recording medium are disposed in a zig-zag form in an intersection direction that intersects a transport direction of the recording medium; and a release unit which releases humidified air from a release port which is open in the recording medium side between ejection units in the intersection direction.

Droplet ejection apparatus

Growing community of inventors

Kanagawa, Japan

Shinji Seto