A virtual reality (VR) system includes a VR display and a VR movement apparatus that includes hand user interfaces (UIs) and foot UIs that can support the hands, feet, and total weight of a user. The VR movement apparatus allow the user's hands and feet to move in 3-dimensional space that include vertical, lateral, and fore-aft direction movements. A computer running VR software coordinate and synchronizes the VR movement apparatus and the VR display to provide system users with simulated activities in a VR environment.

An information related to the position of an actuator coupled to a cable which is coupled to a motor is received. A filter is used to provide an input to a motor controller coupled to the motor, to adjust torque on the motor such that a strength curve is implemented relative to the position of the actuator.

An information related to the position of an actuator coupled to a cable which is coupled to a motor is received. A filter is used to provide an input to a motor controller coupled to the motor, to adjust torque on the motor such that a strength curve is implemented relative to the position of the actuator.

Vehicle simulators assist a rider with balancing a human-supported vehicle (e.g., bicycle, motorcycle, scooter, skateboard, etc.) by laterally displacing two pivot points supporting the vehicle without longitudinally moving the vehicle. The lateral displacement may be human-controlled, and need not require a wheel rolling on a belt or roller. The vehicle simulators feature mechanisms to laterally translate a front portion (e.g., a front wheel) and a rear portion (e.g., a rear wheel) of the vehicle such that a rider may balance the vehicle by steering. Advantageously, embodiments allow the vehicle to be laterally translated such that the rider may balance the vehicle in the same manner as when riding on a road, thereby providing a more realistic experience than prior-art simulators (e.g., stationary bicycle trainers) that do not allow the vehicle to be laterally translated and therefore do not require the rider to balance the vehicle.

Embodiments disclosed herein provide an exercise system that facilitates a varying load. During operation, the system produces a load-control pattern using a control module, and varies a load using a load-varying mechanism based on the load-control pattern, thereby facilitating varying-load during exercise for effective muscle stimulation.

A method and device for providing a resistance force to a user is disclosed. To provide a resistance force, the method includes measuring an angle of a joint of a user using a sensor of a wearable device, determining a resistance level for the joint based on the measured angle, determining a connection ratio of a motor driver circuit of the wearable device that corresponds to the resistance level, and controlling a motor based on the determined connection ratio of the motor driver circuit.

An exercise assist method includes receiving a user input signal comprising exercise setting information from an external device; measuring, based on the user input signal, a joint angle of a hip joint of a user wearing an exercise assist device configured to assist a user in performing a leg movement; and controlling torque of the exercise assist device to be applied to a leg of the user based on the measured joint angle and the exercise setting information.

A wearable device and an exercise support method performed by the wearable device are disclosed. The exercise support method includes receiving exercise setting information associated with a lower body muscle that is selected by a user input, determining a torque profile to be applied to the wearable device based on the received exercise setting information, and operating an actuator of the wearable device based on the determined torque profile.

A modular motor drive for use in fitness equipment includes a switching circuit having switches and that is responsive to switching control signals by selectively reconfiguring the switches to control supply of electrical energy to a motor of an exercise device according to the switching control signals. The motor drive further includes an interface coupleable with an application control board of the exercise device. Responsive to a first switching control signal, the switching circuit configures the plurality of switches to drive the motor of the exercise device. Responsive to a second switching control signal corresponding to electric braking of the motor, the switching circuit configures the plurality of switches to stop driving the motor of the exercise device.

Commands are received from an exercise actuator via a control interface. Collaborative information about an exercise session is received via a software interface. A force from a central electromagnetic resistance unit is provided in response to the control interface and the software interface via a resistance mechanical interface.