1
Niall R Parker, Peter D Lawrence, Septimiu E Salcudean: Velocity controller with force feedback stiffness control. The University of British Columbia, C A Rowley, April 30, 1996: US05513100 (177 worldwide citation)

A force feedback velocity control measures the forces adjacent the end point of an arm being controlled and adjusts the stiffness of a manual controller in any one direction by scaling the end point force in the corresponding direction and adjusting the scaled force based on the degree of displaceme ...


2
Septimiu E Salcudean, Niall R Parker: Active joystick with optical position sensor. C A Rowley, April 16, 2002: US06373466 (7 worldwide citation)

A joystick composed of a stator formed by an outer cage forming an inner cubic compartment containing an inner cube oriented with its wall spaced from and substantially parallel corresponding wall of the compartment. Opposed magnets are position in cooperating relationship on opposed walls of the co ...


3
Septimiu E Salcudean, Niall R Parker: Active joystick with optical positions sensor. C A Rowley, February 27, 2001: US06195083 (5 worldwide citation)

A joystick composed of a stator formed by an outer cage forming an inner cubic compartment containing an inner cube oriented with its wall spaced from and substantially parallel corresponding wall of the compartment. Opposed magnets are position in cooperating relationship on opposed walls of the co ...


4
Septimiu E Salcudean, Niall R Parker: Active joystick with optical position sensor. CA Rowley, November 8, 2001: US20010038380-A1

A joystick composed of a stator formed by an outer cage forming an inner cubic compartment containing an inner cube oriented with its wall spaced from and substantially parallel corresponding wall of the compartment. Opposed magnets are position in cooperating relationship on opposed walls of the co ...