Robot system

A robot system comprising:

• a moving device that is moved on a floor surface;
• a human-collaborative robot that is mounted on the moving device and that performs tasks in collaboration with a human, the human being moved on the floor surface;
• a controller that controls an operation of the human-collaborative robot and a movement of the moving device;
• a first sensor that detects an entry of the human into a first region around the human-collaborative robot;
• and
• a second sensor that detects an entry of the human into a second region around the human-collaborative robot, the second region being included in the first region,
• wherein, in response to detecting the entry of the human into the first region by the first sensor, the controller performs a first control that comprises controlling the movement of the moving device to restrict speed of the operation of the human-collaborative robot relative to the floor surface, and
• after the speed of the operation of the human-collaborative robot relative to the floor surface is restricted, in response to detecting the entry of the human into the second region by the second sensor, the controller performs a second control that comprises controlling the operation of the human-collaborative robot to further restrict the speed of the operation of the human-collaborative robot relative to the floor surface.