초록 ▼

A DC motor is connected to a driveshaft the rotation of which is directly coupled to movement of an exercise member. The DC motor is operated in the current control mode wherein current direction and value through the winding of the motor determines its torque. An encoder is connected to the shaft o

A DC motor is connected to a driveshaft the rotation of which is directly coupled to movement of an exercise member. The DC motor is operated in the current control mode wherein current direction and value through the winding of the motor determines its torque. An encoder is connected to the shaft of the motor to monitor its angular position. A program controlled processor monitors the angular position of the shaft and controls the current to the motor to vary the torque thereof and, thus, the force of resistance or assistance to the exercise member in accordance with preprogrammed values and as a function of angular position. A plurality of encoder/motor assemblies control exercise about a plurality of axes of bodily movement.

대표청구항 ▼

A system for providing program controlled force in an exercise apparatus, comprising: a driveshaft having an exercise arm extending radially therefrom and adapted for engagement by a user to perform muscular exercise by moving said arm arcuately about said driveshaft; a direct current electric motor

A system for providing program controlled force in an exercise apparatus, comprising: a driveshaft having an exercise arm extending radially therefrom and adapted for engagement by a user to perform muscular exercise by moving said arm arcuately about said driveshaft; a direct current electric motor having a rotor connected to said driveshaft, said motor being operable in the current mode to control the torque thereof by varying the current through the windings of said motor; means mounted to said exercise arm for movement therewith for providing a continuous output signal indicative of the arcuate position of said exercise arm; and program controlled processor means responsive to said continuous output signal and to the current through the windings of said motor for varying said current to provide a preprogrammed variation in the torque exerted by said motor and, thereby, the force exerted by said exercise arm against the user; wherein said processor means includes: a process control microcomputer; means for monitoring the current flow direction and the value through the windings of said electric motor; latch means responsive to said microcomputer for storing a desired value of current flow direction and value through said motor windings; a supply of electric power; and a current mode control forward converter connected to said power supply and to said current flow monitoring means and responsive to the desired value stored in said latch means for changing the current flow direction and value in said motor winding. A system for providing program controlled force in an exercise apparatus, comprising: a plurality of driveshafts, each of said driveshafts having an exercise arm extending radially therefrom and adapted for engagement with the body of a user to perform muscular exercise by moving said exercise arm arcuately about said driveshafts, each of said driveshaft being positioned for arcuate movement of the associated exercise arm in a plane parallel to that of the bodily movement about a joint of said user; a plurality of direct current electric motor, each of said DC motor having a rotor connected to an associated one of said driveshafts, each motor being operable in response to the current mode to control the torque thereof by varying the current through the windings of said DC motor; means mounted to each of said exercise arms for movement therewith for providing a continuous output signal indicative of the arcuate position of each of said exercise arm; program controlled processor means responsive to said plurality of continuous output signals and to the current through the windings of each of said DC motors for varying said currents to provide a preprogrammed variation in the torque exerted by each DC motor and, thereby, the force exerted by each of said exercise arms against said bodily movement about said joints of said user.