A robot controller able to suppress shaking of a tool tip of a robot due to operation of a travel axis. The robot controller includes a movement calculating part calculating an amount of movement of the travel axis and an amount of movement of the tool tip each time the travel axis operates in accordance with a command and a correcting part correcting a command value so that at least one command value of a speed and acceleration to the travel axis becomes smaller when the amount of movement of the travel axis is larger than a predetermined first threshold value and the amount of movement of the tool tip is smaller than a predetermined second threshold value.

A robot includes a first arm rotatable about a first rotation axis, a second arm provided to be rotatable about a second rotation axis in a axis direction different from a axis direction of the first rotation axis, and inertial sensors, wherein the first arm and the second arm can overlap as seen from the axis direction of the second rotation axis.

A robot controller able to suppress shaking of a tool tip of a robot due to operation of a travel axis. The robot controller includes a movement calculating part calculating an amount of movement of the travel axis and an amount of movement of the tool tip each time the travel axis operates in accordance with a command and a correcting part correcting a command value so that at least one command value of a speed and acceleration to the travel axis becomes smaller when the amount of movement of the travel axis is larger than a predetermined first threshold value and the amount of movement of the tool tip is smaller than a predetermined second threshold value.

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.

The purpose of the present invention is to provide a control device for a machine tool that can reliably chop chips while suppressing vibration of the machine tool. A control device (1) for a machine tool machines by relatively oscillating a tool and a workpiece, the control device comprising: an oscillation command generation unit (13) that calculates an oscillation amplitude and an oscillation frequency from a machining condition and generates an oscillation command; and a position-speed control unit (17) that relatively oscillates the tool and the workpiece on the basis of a superimposed command generated by superimposing the oscillation command generated by the oscillation command generation unit (13) on a position command or a position deviation. The oscillation command generation unit (13) changes the oscillation amplitude and/or the oscillation frequency during machining.

Provided is a robot control device capable of reducing a robot vibration amount using machine learning based on a small number of operations. A robot control device according to one aspect of the present invention that, in order to perform a task in relation to a target object which is made to move by a robot, controls operation by the robot based on an operation program that uses a plurality of pass-through points to specify a movement path that includes one or more task sections in which the task is to be performed, the robot control device including: a command value generation unit configured to, based on the operation program, generates a command value that instructs a state of the robot for each time; a driving unit configured to drive the robot in accordance with the command value; a vibration amount obtainment unit configured to, for each time, obtain an amount of vibration of the robot that is driven by the driving unit; a vibration amount extraction unit configured to, based on the operation program, extract the amount of vibration for a time corresponding to the task section from among the amounts of vibration obtained by the vibration amount obtainment unit; and a command value correction unit configured to, based on the amount of vibration extracted by the vibration amount extraction unit, correct the command value.

A method for suppressing vibration of a control signal for force control includes: acquiring a first output signal of a force sensing device, the first output signal including at least one of a force signal and a torque signal; processing, by an analog differential circuit, the first output signal to obtain a second output signal corresponding to a differential component of at least one of the force signal and the torque signal; and suppressing, by using the second output signal, vibration of the control signal for force control.