摘要:
The invention relates to a method for controlling a manipulator. Said method consisting of providing a temperature-dependent calibration, using said calibration a correction parameter set is calculated which is based on determined reference point residual drift values. Subsequently, the manipulator is controlled by taking into account the correction parameter set.
摘要:
A method for determining a number of load parameters (ml, xl, rl, αl, Ix, Iy, Iz) for a load (6) which is carried by a manipulator. The manipulator comprises a number of links (2, 3, 4) which are movable in relation to one another, a handling member (5) for supporting a tool, which handling member is movable in relation to said links, a number of axes (A1-A6) around which the links or the handling member are/is movable as well as a motor for each axis which drives the movement of the axis in accordance with supplied reference values for the torque of the motor. According to the method, the manipulator adopts two selected axis configurations. A number of identification axes are appointed. The manipulator is run such that the identification axes carry out a plurality of movements according to predetermined patterns. During these movements, the motor torque and the axis angle are measured. The moments of gravitational force of the identification axes are calculated on the basis of measured motor torques during a first movement. The mass inertia is calculated with correlation between measured motor torques and calculated acceleration during a second movement. The load parameters are calculated from the calculated moments of gravitational force and the mass inertias with the aid of the movement equations of the identification axes.
摘要:
A method and system for determining at least one property associated with a selected axis of a manipulator (2). The elasticity of the links (4, 6, 9, 10, 13, 14) and joints (3, 5, 7, 8, 11, 12) of a manipulator (2) can be modeled and the resulting compliance can be determined. A certain method is used to control the manipulator (2) such that certain quantities related to actuator torque and/or joint position can be determined for a certain kinematic configuration of the manipulator (2). Depending on the complexity of the manipulator (2) and the number of properties that are of interest, the manipulator (2) is controlled to a plurality of different kinematic configurations in which configurations the quantities are determined. Thereafter, a stiffness matrix (K) for each component of the manipulator (2) can be determined, and a global stiffness matrix (MSM) for the total manipulator (2) can be determined in order to determine at least one property of the selected axis.
摘要:
Bei einem Verfahren sowie einer Vorrichtung zur Bestimmung von Strukturparametern eines Roboters mit mehreren zueinander lageveränderbaren Roboterelementen (10) ist ein Roboter von Kalibrierelementen (24) umgeben. Die Roboterelemente (10) sind mit Beobachtungseinrichtungen (20) verbunden. Mit Hilfe einer Auswerteeinrichtung wird die relative Position und/oder Orientierung der Roboterelemente (10) bestimmt und sodann die Strukturparameter direkt und/oder indirekt auf Basis der Beobachtungen der Beobachtungseinrichtungen (20) Position und/oder Orientierung ermittelt.
摘要:
Die Erfindung betrifft eine Fertigungseinrichtung mit einer Biegepresse (2), insbesondere Abkantpresse für die Fertigung biegegeformter Werkteile aus Platinen und mit einer Handhabungsvorrichtung (4), insbesondere einem mehrachsigen Roboter für die Platinen- und/oder Werkteilmanipulation und mit einer Kalibriereinrichtung zum Positionsabgleich einer Ist- Position eines Roboterreferenzpunktes an eine vorgegebene Soll- Position des Roboterreferenzpunktes in Bezug auf eine Referenzposition in einem Arbeitsraum der Biegepresse (2). An der Biegepresse (2) ist zum Positionsabgleich ein mit einer Mehrzahl von in ihrer Position im Arbeitsraum bestimmter Referenzmittel (159) versehener Referenzkörper (158) angeordnet. An einem Gelenkarm insbesondere einer Dreheinrichtung (60) ist ein Messsystem (156) zur Positionserfassung der Referenzmittel (159) angeordnet.
摘要:
A mechanism having at least one output element is positioned by controlled movement of joints of the mechanism in response to joint control signals, representing joint variables, which are generated by a controller based on a kinematic model of the mechanism, which model resides in control software. The control software includes parameters which may be adjusted to account for the effect of variation, over time, of lengths or angles in the mechanism, which occur due to such causes as compliance under load, thermal expansion and wear. Sensors are provided for external observation of the position of one or more parts of the mechanism in response to a set of joint variables, and from a sufficient number of such observations in response to generally different joint control variables, the parameters are automatically adapted by maximal likelihood estimation, considering known standard deviations describing uncertainties in the external observations. Such observations and the adaption of the parameters may be performed during normal operation of the mechanism. Additionally, for the purpose of reducing time and development expense, the control software is generated by compiling a kinematic description file relating frames of reference fixed with respect to bodies of the mechanism.
摘要:
An apparatus and a method for generating acceleration and deceleration patterns for control of a robot in a servo system which is equipped with a plurality of driving axes so constituted as to mutually exert dynamic interference, in such a manner that a synchronism is attained at acceleration start points, velocity peak points and deceleration end points in the patterns for the individual driving axes. Peak time calculating means responds to the information relative to dynamic parameters from constant setting means and command means, and calculates the peak time, which is required until the velocity reaches its peak after the pattern generation start point, from the kinetic energy consumed for each displacement and also from the power distribution relative to the driving sources. And pattern generating means generates, on the basis of the peak time thus obtained, an acceleration pattern and a temporally reflected deceleration pattern for each driving axis, whereby the tact time required for each displacement can be minimized.