Abstract:
A method for identifying at least one physical characteristic of a work piece includes selecting at least one test scheme having one or more test configurations. At least one error isolation scheme is selected having one or more counterpart test configurations. The work piece is moved through the one or more test configurations, and a sensor suite measures one or more of base force, torque, or motion. The work piece is moved through the one or more counterpart test configurations, and counterpart force, torque or motion are measured. Identification of the at least one physical characteristic includes isolating error common to one or more of the measured base and counterpart force, torque or motion, and removing the isolated error from the base measurements to generate one or more of refined force, torque or motion. The at least one physical characteristic is determined according to the one or more refined values.
Abstract:
A method for measuring mass inertia of moving surfaces, comprising the steps of: (a) Alignment of the center of gravity of an assembly (90) formed by the moving surface (50) and a support device (70) fastened to at least two joints (31, 32) in a rest position, this alignment comprising a reading in a comparing clock (40) and driving of an adjusting element arranged in the support device (70) for obtainment of a predetermined value in the comparing clock (40); (b) Measurement of the static moment of assembly (M static ) in an intermediate position through a dynamometer (60); (c) Measurement of the oscillation period of assembly (T) in a pendulum position through an accelerometer arranged in the support device (70) and (d) Reading of the static moment of assembly (Mstatic) and that of oscillation period of assembly (T) and obtainment of the inertial moment of the moving surface (I hhsup ) - An equipment (10) for measurement of mass inertia of moving surfaces, is further described, comprising: a structure (20) formed by first and second structural bodies (21, 22) concurrently, thus forming a free gap (23) for positioning of moving surfaces (50); the first structural body (21 ) comprising at least two joints (31, 32) fastened to its upper portion (21 1 ) and a comparing clock (40) arranged in its lower position (212); the structural body (22) comprising a dynamometer (60) positioned in an extension (25); and a support device (70) associated with at least two joints (31, 32) and in collaboration with a comparing clock (40) and the dynamometer (60).
Abstract:
System for determining inertia properties of a rigid body, particularly the inertia tensor, the mass and/or the position of the center of mass, comprising: a carrier (10), which is designed for suspending a rigid body (2) from the carrier (10), such that the rigid body (2) is able to perform movements along the six degrees of freedom of the rigid body (B), at least six sensors (100) providing output signals for detecting the movement of the rigid body (2) along the six degrees of freedom of the rigid body (2), a measuring device (110) cooperating with the sensors (100), wherein the measuring device (110) is configured to measure said movement of the rigid body (2) by means of said output signals (S 1 (t k )), and an analysing means (20) configured for determining from said output signals (S 1 (t k ) ) said inertia properties (r s ). Furthermore, the invention relates to a method for determing the inertia properties (r s ).
Abstract:
Un dispositif de mise en mouvement d'un objet comprend une base et un plateau adapté à recevoir l'objet, six supports ayant chacun une extrémité supérieure connectée au plateau et une extrémité inférieure connectée à la base, et un dispositif d'actionnement connecté à au moins trois des supports. L'extrémité supérieure et l'extrémité inférieure de chaque support ont de façon combinée au moins cinq degrés de liberté. Le dispositif d'actionnement est adapté pour imprimer des mouvements périodiques prédéfinis auxdits au moins trois des six supports, ces trois supports étant dits supports commandés, imprimant ainsi un mouvement périodique au plateau par rapport à la base selon au moins trois degrés de libertés.
Abstract:
A method and system for identifying a work piece moment of intertia (MOI) of a work piece includes coupling the a work piece to a manipulator assembly such as a 6-axis robotic arm or 3-axis gimbal. The manipulator assembly includes a force/torque sensor and a motion feedback sensor. The manipulator assembly moves the work piece with three-dimensional motion. Force, torque and movement measurements are made as the work piece moves. The work piece MOI is identified according to the force and torque measurements and rotational accelerations derived from the measured movement. The measurements may be used to identify the products of inertia (POI) and center of mass of the work piece.
Abstract:
A system for repositioning at least one battery of an electric-powered vehicle relative to a drive axle of the vehicle to increase the weight carried by the axle as the vehicle attains a predetermined speed.
Abstract:
본 발명은, 단일한 기판 상에, x축의 병진운동을 검지하는 x축 가속도계, y축의 병진운동을 검지하는 y축 가속도계, 및 z축의 회전 운동을 검지하는 z축 각속도계가 형성되어 있는 3축 관성 측정 시스템의 제조 방법으로서, 상기 x축 가속도계, 상기 y축 가속도계 및 상기 z축 각속도계는 표면/벌크 마이크로머시닝(SBM : Surface/Bulk Micromachining) 공정에 의하여 형성되고, 알카리 에칭(alkaline etching)을 할 때, 릴리스(release)되는 것이 방지되도록 하는 릴리스 방지 패턴을 형성하는 단계를 포함한, 3축 관성 측정 시스템의 제조 방법을 제공한다.
Abstract:
The invention relates to a device for determining the inertial parameters of a body, particularly a motor vehicle. Said device comprises a receiving platform (P) on which the body (F10) can be placed. The receiving platform (P) is provided with a central, especially spherical joint (G00) about which the receiving platform (P) can be moved with three degrees of freedom (x, y, z) by means of drive units (Z1, Z2, Z3). The invention further relates to a method for determining the inertial parameters of a body, particularly by means of a device disclosed in one of the preceding claims. In said method, a control system is provided which allows a receiving platform (P) and a body (F10) mounted thereon to be moved about a central pivot (G00) with three degrees of freedom (x, y, z). The forces measured in the joints (G00, G20) and the angles measured in the central joint (G00) are fed to an evaluation process, by means of which the inertial parameters of the body (F10) are determined especially by using laws of mechanics, particularly the principle of angular momentum.
Abstract:
L'invention concerne un dispositif de caractérisation (1), comprenant: un stator (20); un rotor (10) monté pivotant et présentant une partie cylindrique droite de section circulaire dont le centre est situé sur un premier axe, avec un alésage ménagé à la périphérie; un support (70) fixé à une extrémité du rotor (20), configuré pour la fixation d'un manche d'un équipement sportif de sorte que ce manche s'étende selon un deuxième axe perpendiculaire au premier axe; une goupille (30) montée coulissante selon un troisième axe perpendiculaire au premier axe, venant en prise dans l'alésage du rotor (10) pour une position où les deuxième et troisième axes forment un angle d'une valeur prédéfinie, une extrémité de la goupille (30) présentant un évidement dont les bordures épousent une surface cylindrique droite s'étendant selon une parallèle au premier axe; un dispositif (50) de mesure de la fréquence d'oscillation du rotor.