Patent classifications
B25J13/085
Deformable sensors and methods for detecting pose and force against an object
Systems and methods for detecting pose and force against an object are provided. A method includes receiving a signal from a deformable sensor comprising data from a deformation region in a deformable membrane resulting from contact with the object utilizing an internal sensor disposed within an enclosure and having a field of view directed through a medium and toward a bottom surface of the deformable membrane. The method also determines a pose of the object based on the deformation region of the deformable membrane. The method also determines an amount of force applied between the deformable membrane and the object is determined based on the deformation region of the deformable membrane.
Torsional series elastic actuator
A rotary-type series elastic actuator (SEA) for use in robotic applications. The SEA including a motor, gear transmission assembly, spring assembly, and sensors. In one example, a robotic joint may include the SEA as well as two links coupled with each other at the joint assembly. The two links may be designated as input and output links. Each link may have a joint housing body which may be concentrically connected via a joint bearing so that they freely rotate against each other. The housing frame of the SEA may be fixed at the joint housing body of the input link while the output mount of the spring assembly of the SEA may be concentrically coupled with the joint housing body of the output link. The rotation of the motor rotor causes the rotation of the output link with respect to the input link plus spring deflection of the spring assembly. When an external force or torque are applied between the two links, a control action of a control loop may cause a rotation and motive force of the motor that lead to the deflection of the spring assembly to balance with the external force/torque and inertial force from body masses moving together with the links.
WEIGHING DEVICE
It is an object of the present invention to provide a weighing device in which dropping of articles from gripping means and reductions in weighing precision are suppressed. In a weighing device (100), when at least one of an operation state of grippers (30) and weighing results from weighing units (40) fulfills any condition from among “a weight value of articles (A) weighed by the weighing units (40) not being a preset target weight value,” “an operating distance in an operation in which the articles (A) are held by gripping members (32) being greater than a prescribed range,” and “the operating distance in the operation in which the articles (A) are held by the gripping members (32) being less than the prescribed range,” the articles (A) gripped by the grippers (30) are returned to an article group accommodation container (52) by a control unit (70) without said articles (A) being discharged to a discharge chute. As a result, a situation where the grippers (30) operate while still holding “articles for which the weight value is not the target weight value” is avoided.
SENSING DEVICE AND ROBOT MANIPULATOR HAVING THE SAME
In a sensing device and a robot manipulator having the sensing device, the sensing device includes a cover, a force sensor and a force information calculating part. The cover has a predetermined shape and is configured to cover a body. The force sensor is disposed at a position between the body and the cover, and is configured to measure a force and a torque applied via the cover at the position. The force information calculating part is configured to obtain an information on the force applied to the cover from data measured by the force sensor, when the force is applied to an arbitrary position of the cover.
FORCE SENSING DEVICE
A force sensing device for use in a robotic finger including: a first segment, the first segment having a first joint at a first end thereof; a second segment, the second segment being connected to the first segment by a second joint; and a third segment, the third segment being connected to the second segment by a third joint; and torque sensor for sensing the torque at each of the joints when a force is applied to the third segment. The first, second and third joints are disposed within the same plane and are disposed in a triangular arrangement.
POWERING A SURGICAL ROBOT ARM
A control system for a surgical robotic system, the surgical robotic system comprising a remote surgeon console having a surgeon input device, and a surgical robot arm comprising a series of joints extending from a base to a terminal end for attaching to a surgical instrument, the surgical robot arm operable in a full power mode in which the joints of the surgical robot arm are powered by a first power source and a reduced power mode in which the joints of the surgical robot arm are powered by a second power source, the control system configured to: whilst the surgical robot arm is operating in the full power mode, control the surgical robot arm in a surgical mode by converting movements of the surgeon input device to control signals for moving joints of the surgical robot arm; detect power failure of the first power source; in response to detecting the power failure, enable the reduced power mode, and transition control of the surgical robot arm from the surgical mode to a standby mode; whilst in the reduced power mode, receive a command from a user input located on or adjacent to the surgical robot arm or on the surgeon console; and in response to receiving the command, transition control of the surgical robot arm from the standby mode to a calibration mode.
Two-degree-of-freedom rope-driven finger force feedback device
The present invention provides a two-degree-of-freedom rope-driven finger force feedback device. The two-degree-of-freedom rope-driven finger force feedback device includes a hand support mechanism, a thumb movement mechanism, an index finger movement mechanism, and a handle mechanism. The hand support mechanism includes a motor, a motor shaft sleeve, a sliding rail, and an inertial measurement unit (IMU) sensor. The thumb movement mechanism includes a long rotary disc, a torque sensor, an angle sensor, a thumb sleeve, a pressure sensor, two links, a thumb brace, and a thumb fixing ring. The handle mechanism includes a cylindrical handle, a pressure sensor, a flexible fixing band, and a slider. Torque is driven between the rotary disc and the motor by using a rope. The handle mechanism is movable forward and backward and is capable of automatic restoration. By means of the present invention, the problems of the high costs of a conventional finger force feedback device and the unadjustable characteristic of the conventional finger force feedback device are overcome. The device can be tightly worn and has a self-adaptive degree of freedom. Rope driving can ensure a gentle, smooth, and real feedback force. By means of the mounted sensors, information such as a hand posture, a rotation angle and a grip force of a thumb and an index finger, and a contact force of a middle finger can be transmitted in real time.
Robot system, control apparatus, and control method for robot
A robot system includes a robot collaboratively acting with a human, a force sensor provided in the robot and detecting a force, a control unit decelerating or stopping an action of the robot based on output from the force sensor, a first temperature sensor detecting a temperature of the force sensor, and an execution unit performing warm-up operation in the robot until output from the first temperature sensor reaches a first target value.
Method of controlling robot
A method of controlling a robot that performs work using an end effector on an object transported by a handler includes calculating a target position of the end effector based on a position of the object, calculating a tracking correction amount for correction of the target position in correspondence with a transport amount of the object, controlling the end effector to follow the object based on the target position and the tracking correction amount, acquiring an acting force acting on the end effector from the object using a force sensor, calculating a force control correction amount for correction of the target position to set the acting force to a target force, and controlling the acting force to be the predetermined target force by driving the manipulator based on the force control correction amount.
Bag-shaped actuator system, gripping device using the same, robotic hand, and usage method of robotic hand
A bag-shaped actuator system includes: a bag-shaped actuator including an airtight bag member and flowable particulates filled in the bag member; a bag-member communication pipe configured to communicate with an inside of the bag member; a low-air-pressure-source communication pipe configured to communicate with a low air pressure source; a high-air-pressure-source communication pipe configured to communicate with a high air pressure source; a switching mechanism configured to perform switching between communication destinations of the bag member such that the inside of the bag member communicates with any of external air, the low-air-pressure-source communication pipe, and the high-air-pressure-source communication pipe via the bag-member communication pipe; and a switching controlling portion configured to control the switching between the communication destinations by the switching mechanism.