摘要:
A method for providing a controlled force to a dynamic system includes applying a force to a first actuator, transmitting the force from the first actuator to a second actuator through a closed fluid path containing a captured volume of fluid, and providing, via the second actuator, a controlled force to the dynamic system.
摘要:
A fluid transmission system adapted to provide a controlled force to a dynamic system includes a controller, a drive system coupled to the controller and to a path having a captured amount (mass) of fluid contained therein and an interface coupled to the captured fluid path.
摘要:
An impedance shaping element (or more simply, an impedance shaper) physically alters or shapes the mechanical impedance of a drive system as it appears from an interface and facilitates use of feedback control to improve performance by altering or shaping a dynamic coupling between an interface and a control system. For example, the impedance shaper can be used to adjust a coupling value from a first value to a second different value. In one embodiment, an impedance shaper controls the compliance, damping and inertia characteristics of fluid within a fluid path.
摘要:
A method of measuring a change in neurological and/or muscular performance of a subject may include attaching an attachment to a subject. The subject may then be directed to perform a motion. A first force imposed by the subject on the attachment and/or a first motion of the attachment is sensed. The subject's first response may then be compared to a second response to determine a change in the subject's neurological and/or muscular performance.
摘要:
An ankle interface may include a leg connection attachable to a user's leg, a foot connection attached to the user's corresponding foot, and a transmission system coupling the leg connection and the foot connection with at least two degrees of freedom and actuating at least two degrees of freedom.
摘要:
Wrist and upper extremity motion systems and method may include positioning a subject's wrist or upper extremity in a motion device, and actuating one or more motors associated with the device to provide at least one of assistance, perturbation, and resistance to a wrist or upper extremity motion.
摘要:
A pelvis interface may include a subject attachment module including a waist attachment and a back attachment. The interface may further include an arm assembly coupled to the subject attachment module, the arm assembly including a plurality of arms so coupled to one another and/or to the subject attachment module as to permit the subject attachment module at least one pelvis translation degree of freedom and at least one pelvis rotation degree of freedom. The interface may further include motors so coupled to the arm assembly as to actuate at least one pelvis translation degree of freedom and at least one pelvis rotation degree of freedom.
摘要:
A pelvis interface may include a subject attachment module including a waist attachment and a back attachment. The interface may further include an arm assembly coupled to the subject attachment module, the arm assembly including a plurality of arms so coupled to one another and/or to the subject attachment module as to permit the subject attachment module at least one pelvis translation degree of freedom and at least one pelvis rotation degree of freedom. The interface may further include motors so coupled to the arm assembly as to actuate at least one pelvis translation degree of freedom and at least one pelvis rotation degree of freedom.
摘要:
A robotic device for use in conjunction with an imaging system and an imaging method is provided. The robotic device can provide mechanical measurements within the imaging system, and can also control the mechanical environment within the imaging system. An end effector of the robotic device engages a body segment of the patient. In addition, position and force sensors are associated with the robotic device such that the position and forces applied to the end effector can be sensed/measured and recorded, while images are obtained. In addition, the robotic device includes actuators to move the end effector to a desired position, and/or to provide a force to a body segment of a patient by way of the end effector. In a particularly preferred form, structural, sensory, and actuator components of the robotic device are magneto-translucent, such that the robotic device can control and/or provide measured information regarding the mechanical environment within a magnetic resonance imaging system.
摘要:
A method for providing a controlled force to a dynamic system includes applying a force to a first actuator, transmitting the force from the first actuator to a second actuator through a closed fluid path containing a captured volume of fluid, and providing, via the second actuator, a controlled force to the dynamic system.