Abstract:
A fluid brake device includes a case defining a fluid chamber filled with magnetorheological fluid, a brake rotor having a magnetic part received in the fluid chamber, a coil that generates magnetic flux by being supplied with electricity, and a controller that controls electricity supplied to the coil. Magnetic particles are suspended in the magnetorheological fluid, and the magnetic flux passes through the magnetic part. The controller continues supplying the electricity to the coil while the brake rotor has a half rotation from a stop state where the brake rotor is stopped at a startup time at which the brake rotor starts rotating.
Abstract:
An actuator device includes an actuator member, a drive subject, a drive device, and a tension applicator. The actuator member is configured to be deformed in response to application of energy to the actuator member from an outside of the actuator member. The drive subject is coupled to the actuator member. The drive device is configured to apply the energy to the actuator member and thereby displace the drive subject in a deforming direction of the actuator member. The tension applicator is configured to apply the actuator member a tension, which enables correction of a tension change generated by at least one of elongation and contraction of the actuator member that is induced by natural deformation of the actuator member.
Abstract:
A power transmission device includes: a pole piece configured to rotate by modulating a magnetic flux between a drive-side magnet and a stationary magnet; and a sealing member that partitions an inside of a housing into a driving side space where the drive-side magnet is disposed and a driven side space where the stationary magnet and the pole piece are disposed, so as to seal fluid between the driving side space and the driven side space. The pole piece and the stationary magnet have a cylindrical shape and are disposed coaxially with and radially outer side of the drive-side magnet. The sealing member includes: a sealing cylinder portion positioned radially outer side of the drive-side magnet; and a sealing bottom surface portion covering the sealing cylinder portion from the driving side space.
Abstract:
An actuator capable of attaining high output. The actuator includes a frame structure part that forms a frame structure surrounding a housing part, and a volume change part housed in the housing part. The volume change part increases a volume thereof by input of external energy. The frame structure part has a higher Young's modulus than a Young's modulus of the volume change part. The housing part has an anisotropic shape, with a maximum width in first direction of the housing part longer than a maximum width in second direction different from the first direction of the housing part.
Abstract:
A torque control device includes a seal structure sealing a clearance between a hollow object and a rotation shaft. The seal structure includes a particle seal, a liquid seal, an intermediate fluid which fills a middle chamber defined between the particle seal and the liquid seal, and a coating film having a hardness higher than that of magnetic particle. The coating film is arranged to at least at a seal perimeter part of the rotation shaft, and a seal gap is defined between the particle seal and the seal perimeter part.
Abstract:
A hydrogen production system includes a hydrogen generation device to generate hydrogen, and a compressor to compress the hydrogen. The hydrogen generation device and the compressor are connected by a first line. The compressor and a hydrogen utilization equipment to utilize the hydrogen compressed by the compressor are connected by a second line. A hydrogen storage unit to store the hydrogen compressed by the compressor is connected to the first line by a first bypass line. The first bypass line has a first control valve to control a flow of the hydrogen in the first bypass line.
Abstract:
A movable device includes an actuator element that deforms about an actuator axis in response to increase or decrease in energy of the actuator element. A driven body is coupled to the actuator element on the actuator axis and turned by deformation of the actuator element. A guide mechanism guides turning of the driven body about a turning axis coaxial with the actuator axis such that torsional deformation of the actuator element is directly transferred to the turning of the driven body.
Abstract:
A housing forms a fluid chamber in an inside of the housing. A magneto-rheological fluid includes a plurality of magneto-rheological particles dispersed in the magneto-rheological fluid and is filled in the fluid chamber. A partition structure partitions the fluid chamber between a radially outer region, in which the magnetic portion is exposed, and a radially inner region, which is located on a radially inner side of the radially outer region in a radial direction of a rotatable brake body, during rotation of the rotatable brake body.