A direct force feedback control method as well as a controller and a robot using the same are provided. The method includes: obtaining an actual position and an actual speed of an end of the robotic arm and an actual external force acting on the end in a Cartesian space; calculating an impedance control component of the end in the Cartesian space based on the obtained actual position, the obtained actual speed, the obtained actual external force, an expected position, an expected speed, and an expected acceleration of the end; calculating a force control component of the end in the Cartesian space based on an expected interaction force acting on the end, the actual external force, and the actual speed; determining whether the actual external force is larger than a preset threshold, and obtaining a total force control quantity of the end of the robotic arm in the Cartesian space.

A direct force feedback control method as well as a controller and a robot using the same are provided. The method includes: obtaining an actual position and an actual speed of an end of the robotic arm and an actual external force acting on the end in a Cartesian space; calculating an impedance control component of the end in the Cartesian space based on the obtained actual position, the obtained actual speed, the obtained actual external force, an expected position, an expected speed, and an expected acceleration of the end; calculating a force control component of the end in the Cartesian space based on an expected interaction force acting on the end, the actual external force, and the actual speed; determining whether the actual external force is larger than a preset threshold, and obtaining a total force control quantity of the end of the robotic arm in the Cartesian space.

A mobile phone includes an acceleration sensor for detecting acceleration, a magnetic sensor for detecting magnetism, and a controller for determining a type of moving state based on the acceleration detected by the acceleration sensor and the magnetism detected by the magnetic sensor.

A robot controller, by which an operator can visually or intuitively understand the direction and/or magnitude of an actual force applied to an arbitrary portion of a workpiece. The controller controls a motion of a robot so that one of a work tool and a workpiece is moved relative to the other, and carries out a predetermined operation. The controller has a force detecting part which detects a force acting between the work tool and the workpiece; and a displaying part which displays a simulated image or video of the robot. The displaying part displays a trajectory of working points on the workpiece, and the force detecting part detects the force applied to each working point when the work tool passes through the working point. The displaying part displays the detected force as a line segment, etc., extending from the working point or a point near the working point.