Abstract:
Various implementations include a device for assisting with and controlling stretching of a limb of a patient. The device includes a limb support for receiving the limb, a base, and a coupling that rotatably couples the limb support and the base. The coupling allows the limb support to rotate through various axes of rotation individually, depending on the range of motion expected for the limb. For example, for a device designed for the foot, the coupling allows a foot support to rotate about a first axis, a second axis, and a third axis, wherein the three axes are orthogonal to each other. In other implementations, the device may be designed for other portions of limbs, such as the hand, the forearm, the upper arm, the lower leg, and the upper leg.
Abstract:
Provided is a training device that suppresses unintended operation of an operation rod when executing an operation mode in which the operation of the operation rod is controlled based on a force applied to the operation rod. The training device includes the operation rod, a motor, a force detection unit, a rotation information output sensor, a first command calculation unit, and a force correction unit. The operation rod moves a limb. The motor operates the operation rod in a direction of degree of freedom. The force detection unit detects a force component and outputs a force component signal. The rotation information output sensor detects an operation position of the operation rod in a corresponding direction of degree of freedom. The force correction unit calculates a corrected force component value based on the operation positions of the operation rod and the force component signal. The first command calculation unit calculates a first motor control command based on the corrected force component value.
Abstract:
A control system for an exoskeleton for a limb of a user wherein the limb has an upper portion connected to the body of a user and a lower limb portion is provided. The control system controls operation of one or more drive motors that rotate one or more joints of the exoskeleton. Input signals from pressure sensors and positional sensors are monitored and, when the input signals fall within expected values, one or more control actions may be implemented.