A robot includes a base, a first arm that rotates around a first rotation axis, a second arm that rotates around a second rotation axis extending in a direction different than the first rotation axis, a third arm that rotates around a third rotation axis extending in a direction parallel to the second rotation axis, a first inertia sensor at the first arm, a second (a) inertia sensor at the third arm, a first angle sensor at a first drive source, a third angle sensor at a third drive source, and the drive sources rotate the respective arms. Angular velocities from the first inertia sensor and the first angle sensor are fed back to a first drive source control unit. Angular velocities from the second (a) inertia sensor and the third angle sensor are fed back to a second drive source control unit.

A method of determining the location of the first object (10) may include receiving signals at a second object (20) from a plurality of measurement points (11) on the first object (10), estimating locations of the plurality of measurement points (11) on the first object (10), determining an estimate of a location of the first object (10), determining a first measurement of an orientation of the first object (10) based on the estimating of the locations of the plurality of measurement points (11) on the first object (10), and determining a second measurement of the orientation of the first object (10) based on measurements by an orientation sensor (12) on the first object (10). The method may include estimating an error of the estimate of the location of the first object (10) based on a difference between the first and second orientation measurements and adjusting a movement of the second object (20) based on the estimated error.

A robot includes a base, a first arm that rotates around a first rotation axis, a second arm that rotates around a second rotation axis extending in a direction different than the first rotation axis, a third arm that rotates around a third rotation axis extending in a direction parallel to the second rotation axis, a first inertia sensor at the first arm, a second (a) inertia sensor at the third arm, a first angle sensor at a first drive source, a third angle sensor at a third drive source, and the drive sources rotate the respective arms. Angular velocities from the first inertia sensor and the first angle sensor are fed back to a first drive source control unit. Angular velocities from the second (a) inertia sensor and the third angle sensor are fed back to a second drive source control unit.

A method of determining the location of the first object (10) may include receiving signals at a second object (20) from a plurality of measurement points (11) on the first object (10), estimating locations of the plurality of measurement points (11) on the first object (10), determining an estimate of a location of the first object (10), determining a first measurement of an orientation of the first object (10) based on the estimating of the locations of the plurality of measurement points (11) on the first object (10), and determining a second measurement of the orientation of the first object (10) based on measurements by an orientation sensor (12) on the first object (10). The method may include estimating an error of the estimate of the location of the first object (10) based on a difference between the first and second orientation measurements and adjusting a movement of the second object (20) based on the estimated error.

A control device controlling a robot including a driving unit, a moving unit that is slidable along a predetermined track and a predetermined shaft that is slidably supported by the moving unit includes an instruction value calculating unit calculating an instruction value that drives the driving unit such that the moving unit is moved to a target position, an accelerating-speed calculating unit calculating an angular accelerating speed of when the instruction value changes, a gravity-center distance calculating unit calculating a gravity center distance, a correction instruction-value calculating unit calculating a correction instruction value by correcting the instruction value such that a position of the gravity center which is projected on the predetermined track approaches the target position, and a driving control unit controlling the driving unit based on the correction instruction value.

A method of controlling a robot includes the steps of calculating a torsional angular velocity of an arm using a difference between an angular velocity detected by a gyro sensor and an angular velocity in a gyro sensor coordinate obtained from information detected by a first encoder and a second encoder, calculating a correction amount of a sensitivity error of the gyro sensor using a variation in the torsional angular velocity, and correcting sensitivity of the gyro sensor using the correction amount of the sensitivity error.

A robot control device controls the operation of a robot including a base; a robot arm that has at least three links, at least three joint portions, and at least three drive sources; an inertia sensor; and at least three angle sensors. The robot control device includes a first coordinate system vibration calculation unit; a second coordinate system vibration calculation unit; a weighting unit; a third coordinate system vibration calculation unit; a correction value calculation unit that obtains correction values for correcting the respective drive commands of the drive sources based on vibration information in a third coordinate system, and the respective detected results of the angle sensors; and a drive source control unit that controls the operations of the drive sources based on the respective drive commands of the drive sources, the correction values, and the respective detected results of the angle sensors.

A robot includes a robot arm and an inertial sensor provided in the robot arm. The robot arm is controlled using a weighting value for weighting output from the inertial sensor. In at least apart of a range in which the robot arm is movable, the weighting value is a first value when acceleration of the robot arm is first acceleration, and changes from the first value to a second value higher than the first value when the acceleration of the robot arm changes from the first acceleration to second acceleration lower than the first acceleration.

A control device controlling a robot including a driving unit, a moving unit that is slidable along a predetermined track and a predetermined shaft that is slidably supported by the moving unit includes an instruction value calculating unit calculating an instruction value that drives the driving unit such that the moving unit is moved to a target position, an accelerating-speed calculating unit calculating an angular accelerating speed of when the instruction value changes, a gravity-center distance calculating unit calculating a gravity center distance, a correction instruction-value calculating unit calculating a correction instruction value by correcting the instruction value such that a position of the gravity center which is projected on the predetermined track approaches the target position, and a driving control unit controlling the driving unit based on the correction instruction value.

A robot includes a base, a first arm that rotates around a first rotation axis, a second arm that rotates around a second rotation axis extending in a direction different than the first rotation axis, a third arm that rotates around a third rotation axis extending in a direction parallel to the second rotation axis, a first inertia sensor at the first arm, a second (a) inertia sensor at the third arm, a first angle sensor at a first drive source, a third angle sensor at a third drive source, and the drive sources rotate the respective arms. Angular velocities from the first inertia sensor and the first angle sensor are fed back to a first drive source control unit. Angular velocities from the second (a) inertia sensor and the third angle sensor are fed back to a second drive source control unit.