Abstract: 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.

Abstract: 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.

Abstract: Accurately controlling pressing thrust regardless of an individual difference and a use situation of a brake apparatus, and the like are set forth herein. The present invention controls a motor that applies thrust to a piston that presses a brake pad, in a current variation period before an idling current period, a variation in the current and the voltage or a variation in a function including the current and the voltage in the idling current period is computed as a plurality of prospective values. At a predetermined time T0 during the current variation period, one of the plurality of prospective values is selected on the basis of the current and the voltage, and on the basis of the variation in the current and the voltage or the function related to the selected prospective value, a characteristic parameter of the motor is computed to compute a stop current of the motor.

Abstract: 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.

Abstract: 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.

Abstract: 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 rum 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 motor 8 based on the motor current. The brake control device controls the electric motor 8 based 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: Provided is a novel pressure pulsation reducing device of a hydraulic system that reduces a stress generated in a metal diaphragm and is excellent in durability. A plurality of concentric recess portions projecting toward an interior space of a pulsation damping member is formed on one of metal diaphragms, and a plurality of concentric recess portions projecting toward the interior space of the pulsation damping member is formed on the other metal diaphragm likewise. When a predetermined pressure is applied to the metal diaphragms, at least one recess portion of one of the metal diaphragms and at least one recess portion of the other metal diaphragm are in contact with each other.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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 device 2b that 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 device 2b stores a clutch engagement position based on a clutch position detected when the acceleration changes. A brake system 1 includes a wheel latching mechanism 5 that latches wheels of a vehicle by driving a propelling member 5a by driving devices 3 and 4; and a controller 2 that controls driving of the propelling member 5a of the wheel latching mechanism 5 based on a clutch engagement position stored in the engagement position storage device 2b.

Abstract: 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.