Other

Wacoh Corporation

Tri-force Management Corporation

Sekisui Chemical Co., Ltd.

Clarion Co

Dai-ichi Seiko Co., Ltd.

Nitta Corporation

Citizen Watch Company, Ltd.

Domintech Co., Ltd.

Wacoh Corporaton

Kazuhiro Okada

Miho Okada

Satoshi Era

Nobumitsu Taniguchi

Nobuhisa Nishioki

Hideo Morimoto

Miho Sekine

Tomoaki Hiruta

Kenji Ogata

Takayoshi Yokota

Mikio Bando

Toshiyuki Aoki

Yousuke Okada

Yoshifumi Ikeda

Tomonori Kajita

Yozo Toei

Shinya Sakamoto

Yuki Hongo

Yasunari Kusaka

Chih-Kung Huang

Shingo Miyata

Shogo Kurogi

Masaki Tono

Takehiko Ushimi

Koichi Hoshino

Akira Ueda

Hiroyuki Kohida

Makoto Arai

Toshitaka Yoshitake

Masako Okamoto

Takeru Yoshino

Hitomi Muraoka

Hideaki Yano

Kazuto Akiba

Zhixing Liu

Ming-Ching Wu

Jeff Biar

Yukitoshi Hashimoto

Shigeo Takagi

Hiromichi Itano

Jundo Nakatugawa

Nobuhiro Nagamoto

Takahito Kamiudo

Takanari Tanaka

A torque sensor according to the present invention includes a strain body, first structure Y-axis connecting portions, second structure X-axis connecting portions and a detection element. The first structure Y-axis connecting portions are disposed on a positive side and a negative side of a Y-axis relative to the strain body, and the second structure X-axis connecting portions are disposed on a positive side and a negative side of an X-axis relative to the second structure. The strain body includes four deformable bodies each including a displacement portion that is displaced in a Z-axis direction by elastic deformation. The deformable bodies are respectively disposed in a first quadrant, a second quadrant, a third quadrant, and a fourth quadrant. The detection element includes a capacitive element that detects a change in capacitance value by a displacement of the displacement portion of each of the deformable bodies in the Z-axis direction.

Torque sensor

Provided are a polyol composition in which hard caking does not occur when stored for a long period of time, and a polyurethane foam using the same. The polyol composition comprises a polyol compound, a foaming agent, a filler, and a metal oxide fine particle, the foaming agent including a hydrofluoroolefin, and the metal oxide fine particle having a count number ratio of OH ions of a metal constituting the metal oxide fine particle with respect to a total count number of all ions measured using time-of-flight secondary ion mass spectrometry of 0.1 or less.

Polyol composition and polyurethane foam

A strain body of a force sensor according to the present invention includes a tilting structure disposed between a force receiving body and a support body, a force-receiving-body-side deformable body connecting the force receiving body and the tilting structure, and a support-body-side deformable body connecting the tilting structure and the support body. The tilting structure includes a first tilting body that extends in a second direction orthogonal to a first direction and that is elastically deformable by the action of force in the first direction.

Force sensor

A torque sensor for detecting torque around a predetermined rotation axis, including: a first support body, a second support body, a detection part which connects the first support body and the second support body and which undergoes elastic deformation by exertion of torque to be detected, a detection element which detects elastic deformation occurring at the detection part, and a detection circuit which outputs an electric signal indicating torque around the rotation axis exerted on one of (i) the first support body in a state that a load is applied to the second support body, and (ii) the second support body in a state that a load is applied to the first support body. The detection element includes a capacitive element which includes a displacement electrode fixed to a displacement part and a fixing electrode opposing the displacement electrode. The detection circuit outputs the electric signal indicating the exerted torque based on fluctuation in capacitance value of the capacitive element.

Torque sensor having detection element which detects elastic deformation by exertion of torque to be detected

A power generating element is provided that includes first and second plate-like structures, a pedestal that supports the first plate-like structure, and first and second piezoelectric elements that generate charges on the basis of the deflections of the two plate-like structures. A base end portion of the first plate-like structure is connected to the pedestal, and a direction from the base end portion toward the tip end portion of the first plate-like structure is a Y-axis positive direction. A base end portion of the second plate-like structure is connected to the tip end portion of the first plate-like structure via a connection body, and a direction from the base end portion toward the tip end portion of the second plate-like structure is a Y-axis negative direction. A frequency band of a half-value width of a resonance system formed on the basis of the flexibility of the second plate-like structure at least partially overlaps a frequency band of a half-value width of a resonance system formed on the basis of the flexibility of the first plate-like structure.

Power generating element

A flame-retardant rigid polyurethane foam contains a flame retardant, the foam having a ratio of the maximum peak intensity ratio (P1) of the foam after moist heat treatment of the foam for one week at a temperature of 80&#xb0; C. and a humidity of 85% to the maximum peak intensity ratio (P2) of the foam before this moist heat treatment of 85% or more (P1/P2x100). The P1 and P2 each refer to the ratio of the maximum peak intensity of 1390 to 1430 cmto the maximum peak intensity of 1500 to 1520 cmwhen the infrared absorption spectrum is measured at a position 5 to 10 mm from the surface of the foam, and the average intensity of 1900 to 2000 cmis adjusted to zero.

Flame-retardant rigid polyurethane foam

A power generating element according to the present invention includes: a support frame formed in a frame shape in plan view; a vibrating body provided inside the support frame; a first bridge portion and a second bridge portion that supports the vibrating body on the support frame; and a charge generating element to generate a charge at the time of displacement of the vibrating body. The support frame includes a first frame portion arranged on a first side with respect to the vibrating body and includes a second frame portion arranged on a second side opposite to the first side with respect to the vibrating body. The first bridge portion couples the vibrating body with the first frame portion. The second bridge portion couples the vibrating body with the second frame portion.

A torque sensor including an annular deformation body disposed so as to surround a circumference of a rotation axis, an exertion support body, a fixing support body, and a detection circuit. The annular deformation body has four coupling parts, and four detection parts positioned between two coupling parts which are adjacent in the circumferential direction of the annular deformation body, the detection parts undergoing elastic deformation by exertion of torque. The detection parts each are formed in a convex shape on one side in a direction along the rotation axis and are formed in a concave shape on the other side in a direction along the rotation axis. The detection circuit outputs electric signals on the basis of elastic deformation undergone to the detection part of the annular deformation body.

Torque sensor used for robot arm, has an exertion support body exerting the torque to an annular deformation body

A force sensor according to the present invention includes: an annular deformable body arranged to surround an origin O when viewed in the Z-axis direction and configured to generate elastic deformation by application of one of a force and a moment; and a detection circuit that outputs an electric signal indicating one of the applied force and the moment on the basis of the elastic deformation generated in the deformable body. The deformable body includes: two fixed portions fixed with respect to the XYZ three-dimensional coordinate system; two force receiving portions positioned alternately with the fixed portions in a circumferential direction of the deformable body and configured to receive application of one of the force and the moment; and four deformable portions positioned between the fixed portion and the force receiving portion adjacent to each other in the circumferential direction of the deformable body, and each of the deformable portions includes a curved portion protruding in the Z-axis direction, and the detection circuit outputs the electric signal on the basis of elastic deformation generated in the curved portion.

Force sensor that detects at least one of a force in each axial direction and a moment around each axis in an XYZ three-dimensional coordinate system

The power generation efficiency is to be enhanced by converting vibration energy including various direction components into electric energy without waste. A cantilever structure is adopted, in which a first plate-like bridge portion () and a second plate-like bridge portion () extend in a shape of a letter U from a fixing-portion () fixed to the device housing () and a weight body () is connected to the end. On the upper surface of the cantilever structure, a common lower layer electrode (E), a layered piezoelectric element () and discrete upper layer electrodes (Exto Ez) are formed. The upper layer electrodes (Ezto Ez) disposed on a center line (Lx, Ly) of each plate-like bridge portion take out charge generated in the piezoelectric element () due to deflection caused by the Z-axis direction vibration of the weight body (). The upper layer electrodes (Exto Ex, Eyto Ey) disposed on both sides of the center line (Lx, Ly) of the plate-like bridge portion take out charge generated in the piezoelectric element () due to deflection caused by the X-axis or Y-axis direction vibration of the weight body ().

An object is to enable a state of a vehicle to be precisely estimated by a Kalman filter. A navigation systemincludes an observation unitthat observes an observable concerning a variation of the vehicle, based on an output from a sensor, and an estimation unitthat estimates a state quantity indicating a state of the vehicle by a Kalman filter, and the estimation unitcalculates a prediction value of the state quantity of the vehicle, calculates an error covariance matrix of the prediction value, by the Kalman filter to which an error of the observable is inputted as an error of the state quantity which is in a relation of calculus with the observable, and calculates an estimation value of the state quantity of the vehicle and an error covariance matrix of the estimation value by the Kalman filter, based on the prediction value and the error covariance matrix of the prediction value which are calculated.

In-vehicle device and estimation method

Provided is a polyol composition for obtaining a polyurethane foam by reacting the composition with a polyisocyanate compound. The polyol composition contains a polyol, a transition metal compound, and a tertiary amine.

Polyurethane composition

A power generating element according to the present invention includes a pedestal formed in a frame shape in plan view, a vibrating body provided inside the pedestal, at least three first bridge supporting portions, each of the first bridge supporting portions extending along a first extending axis and configured to arrange the vibrating body to be supported on a pedestal, and a charge generating element. The first extending axes of a pair of the first bridge supporting portions adjacent to each other form a predetermined angle in a circumferential direction with the vibrating body defined as a center in plan view. At least one first electrode layer of the charge generating element is arranged on each of the first bridge supporting portions.

Power generating element converting vibration energy into electric energy

A torque sensor of the present invention includes: a ring-shaped deformation body; first to fourth displacement electrodes deformable due to elastic deformation of the ring-shaped deformation body; first to fourth fixed electrodes arranged at positions opposite to those of the first to fourth displacement electrodes; and a detection circuit that outputs an electrical signal representing torque based on a variation amount of capacitance values of first to fourth capacitive elements formed by the first to fourth displacement electrodes and the first to fourth fixed electrodes, wherein the detection circuit outputs, as the electrical signals representing the acting torque, a first electrical signal corresponding to a difference between 'a sum of a capacitance value of the first capacitive element and a capacitance value of the second capacitive element' and 'a sum of a capacitance value of the third capacitive element and a capacitance value of the fourth capacitive element' and a second electrical signal corresponding to a difference between the capacitance value of the first capacitive element and the capacitance value of the third capacitive element and determines whether the torque sensor is normally functioning based on the first and the second electrical signals.

Growing community of inventors

Saitama, Japan

Kazuhiro Okada