Abstract:
A driving device of a micropump and a microvalve is provided. The driving device comprises a pump driver controlled by a pump controller, a valve driver controlled by a valve controller, a power supply part, a switch part. The pump driver having a first shape memory alloy wire, a micropump of the first shape memory alloy wire, a wiring part arranged in parallel to the first shape memory alloy wire, and a first selector switch that switches between a state where only the first shape memory alloy wire is energizable and a state where the wiring part is energizable. The valve driver having a plurality of second shape memory alloy wires, a plurality of microvalves of second shape memory alloy wires, and a second selector switch that brings into a state where one of the plurality of second shape memory alloy wires is energizable.
Abstract:
A robot hand apparatus includes a first holder having a bendable first sucking surface that sucks an object using negative pressure; and a second holder having a bendable second sucking surface that sucks the object using negative pressure. The first holder and the second holder are arranged such that the first sucking surface opposes the second sucking surface. When the first holder and the second holder hold the object, in a state in which the first sucking surface is bent at a first position and the second sucking surface is bent at a second position, the object is sucked to a region of the first sucking surface between the first position and a distal end of the first holder, and the object is sucked to a region of the second sucking surface between the second position and a distal end of the second holder.
Abstract:
An actuator includes a first actuator unit including first actuator fibers and a second actuator unit including second actuator fibers located between plate members. The first and second actuator fibers stretch or contract when temperature changes. A spring rate of the second actuator fibers is higher than that of the first actuator fibers. A maximum displacement amount of the second actuator unit is smaller than that of the first actuator unit. The temperature of the first actuator fibers is controlled in a case where a displacement amount of one plate member relative to the other plate member is smaller than a first displacement amount, and the temperature of the first actuator fibers and the temperature of the second actuator fibers are controlled in a case where the displacement amount is equal to or larger than the first displacement amount and equal to or smaller than a maximum displacement amount.
Abstract:
An actuator body includes a tube that has a space therein and is wound spirally about a first axis. The tube has a plurality of first portions and a plurality of second portions, the tube has one or more grooves in at least one of an outer circumferential surface and an inner circumferential surface thereof, and the one or more grooves are provided spirally about a longitudinal axis of the tube, the space is in contact with the inner circumferential surface, and the outer circumferential surface is a surface opposite to the inner circumferential surface, each of the plurality of first portions has higher torsional rigidity than each of the plurality of second portions, the plurality of first portions are aligned along the first axis, and the plurality of first portions do not overlap the plurality of second portions.
Abstract:
The present invention provides an actuator, comprising a fiber and a temperature regulator capable of at least one of heating and cooling the fiber. The fiber is twisted around a longitudinal axis thereof. The fiber is folded so as to have a shape of a cylindrical coil. The fiber is formed of linear low-density polyethylene. The following mathematical formula (I) is satisfied: D/d
Abstract translation:本发明提供了一种致动器,其包括光纤和温度调节器,其能够至少一个加热和冷却光纤。 纤维围绕其纵向轴线扭转。 纤维被折叠成具有圆柱形线圈的形状。 纤维由线性低密度聚乙烯形成。 满足以下数学式(I):D / d <1(I),其中D表示圆筒形线圈的平均直径; d表示纤维的直径。
Abstract:
An assist wear item is worn on a portion of a living body and has an inner surface brought into contact with the portion. The assist wear item includes assisting actuators, contact sensors, and a controller. Each assisting actuator is driven to expand and contract. The assisting actuators are linearly arranged along an expansion/contraction direction of a muscle at the portion. Each contact sensor detects a contact with an outer surface of the assist wear item. If the controller receives a detection result indicating a first contact from a first contact sensor among the contact sensors and receives a detection result indicating a second contact from a second contact sensor within a first time period after reception of the detection result indicating the first contact, the controller increases or decreases a driving power of expansion/contraction driving of an assisting actuator corresponding to the second contact sensor.
Abstract:
A robot hand apparatus includes a first holder having a first sucking surface that is bendable at any position and that sucks an object using negative pressure; a second holder arranged to oppose the first sucking surface of the first holder; and a driving mechanism that changes a distance between the first holder and the second holder to sandwich the object between the first holder and the second holder.
Abstract:
An actuator includes a first actuator fiber and a second actuator fiber that are connected to plate members, a frame member provided at a fixed distance from the plate member; and a controller that controls temperature of the first actuator fiber and temperature of the second actuator fiber. Each of the first actuator fiber and the second actuator fiber is wound spirally and stretches or contracts when temperature thereof is changed. Stretch or contraction of the first actuator fiber or the second actuator fiber based on the control of the temperature causes the plate member to be locked to the frame member or to be unlocked from the frame member.
Abstract:
An assist garment worn on a part of a human body includes a plurality of garment-fitting actuators that are placed linearly along at least one end portion of a garment body and driven to extend and contract, a plurality of assisting actuators that are placed linearly on the garment body to cross the fitting actuators and driven to extend and contract, and a controller that individually controls the drive of the assisting actuators and the drive of the fitting actuators.
Abstract:
A robot hand apparatus includes a holder having a bendable sucking surface that sucks an object; a magnetic elastic body arranged at the holder and formed of an elastic material containing magnetic particles; and a magnetic-field generator that is arranged at the holder and applies a magnetic field to the magnetic elastic body to change a coefficient of elasticity of the magnetic elastic body. When the magnetic-field generator applies a magnetic field to the magnetic elastic body, a flexible portion and a hardened portion having a bigger coefficient of elasticity than that of the flexible portion are formed in the magnetic elastic body. When the holder holds the object, in a state in which the sucking surface is bent at a position corresponding to the flexible portion, a region of the sucking surface between the position and a distal end of the holder sucks the object.