Eureka-AI is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
Eureka AI

836results about "Manual control with multiple controlled members" patented technology

Image controllers with sheet connected sensors

A sensor connecting sheet material for inclusion in appropriately structured multiple-axes controllers comprised of a single input member operable in 6 DOF relative to a reference member of the controller. The input member having return-to-center resiliency relative to the reference member on at least the three perpendicular linear axes. The input member can be of a continuously rotatable trackball-type or a limited rotation joystick-type, and the reference member can be a shaft, a base or a housing. The controllers include carriage structuring for influencing sheet connected sensors by hand-applied operation of the input member. The preferred structures provide cooperative interaction with movement or force influenced sensors in primarily a single area. Some, most, or all of the sensors are preferably supported on a generally single plane, such as on a printed flexible membrane sensor sheet or circuit board sheet. In an alternative embodiment, sensors and conductive traces are applied on a generally flat, flexible membrane sensor sheet, which is then bent into a three dimensional configuration which may in some cases reach a widely-spread 3-D constellation of 6 DOF and/or other sensor mountings. The use of sensors connected by a sheet member, whether finally applied in a flat or 3-D configuration, enables efficient circuit and sensor connection and placement during manufacture, resulting in low product costs and high reliability.

Method for providing high bandwidth force feedback with improved actuator feel

A method and apparatus for providing low-cost, realistic force feedback including an improved actuator. The invention provides force sensations to a user and includes an interface device coupled to a host computer and allowing a user to interact with a host application program. A user object, such as a joystick, is moveable by a user in at least one rotary degree of freedom. A sensor reports a locative signal to the host computer to indicate a position of the user object. An actuator outputs forces on the user object in response to signals from the host computer and program. The actuator includes a housing, a set of grounded magnets provided on opposing surfaces of the housing and creating a magnetic field, and a rotor coupled to the user object positioned between the magnets. The rotor rotates about an axis of rotation and includes a shaft and teeth spaced around the shaft. An electric current flows through one or more coils on the teeth to cause the rotor to rotate. The teeth and the magnets are provided in a skewed, helical arrangement relative to each other so that, as the rotor rotates, a first tooth gradually exits the magnetic field as the next consecutive tooth gradually enters the magnetic field, thereby significantly reducing a cogging effect of the rotor when the user object is moved by the user and increasing the fidelity of forces experienced by the user.

Magnetic haptic feedback systems and methods for virtual reality environments

A haptic feedback system comprises a moveable device with at least three degrees of freedom in an operating space. A display device is operative to present a dynamic virtual environment. A controller is operative to generate display signals to the display device for presentation of a dynamic virtual environment corresponding to the operating space, including an icon corresponding to the position of the moveable device in the virtual environment. An actuator of the haptic feedback system comprises a stator having an array of independently controllable electromagnet coils. By selectively energizing at least a subset of the electromagnetic coils, the stator generates a net magnetic force on the moveable device in the operating space. In certain exemplary embodiments the actuator has a controllably moveable stage positioning the stator in response to movement of the moveable device, resulting in a larger operating area. A detector of the system, optionally multiple sensors of different types, is operative to detect at least the position of the moveable device in the operating space and to generate corresponding detection signals to the controller. The controller receives and processes detection signals from the detection sensor and generates corresponding control signals to the actuator to control the net magnetic force on the moveable device.

Passive force feedback for computer interface devices

A method and apparatus for interfacing the motion of an object with a digital processing system includes a sensor which has a sensing resolution and detects movement of the object along a degree of freedom. An amount of play less than the sesning resolution exists between the sensor and the object. A passive actuator is coupled to the mechanism to transmit a resistive force to the object along the degree of freedom. A play mechanism is coupled to the actuator to provide a desired amount of play between the actuator and the object along the degree of freedom. The desired amount of play is greater than the sensing resolution of the sensor so that the sensor can detect the desired play when the user moves the object, even when the actuator has locked the object into place. Such desired play can be torsion flex (compliance) or rotary backlash. The actuator and the sensor provide an electromechanical interface between the object and the digital processing system. A gimbal mechanism or slotted yoke mechanism can be coupled between the actuator and the object. The interface is well suited for simulations of medical procedures and simulations in which an object such as a stylus or a joystick is moved and manipulated by the user.

Isotonic-isometric haptic feedback interface

A force feedback interface having isotonic and isometric control capability coupled to a host computer that displays a graphical environment such as a GUI. The interface includes a user manipulatable physical object movable in physical space, such as a mouse or puck. A sensor detects the object's movement and an actuator applies output force on the physical object. A mode selector selects isotonic and isometric control modes of the interface from an input device such as a physical button or from an interaction between graphical objects. Isotonic mode provides input to the host computer based on a position of the physical object and updates a position of a cursor, and force sensations can be applied to the physical object based on movement of the cursor. Isometric mode provides input to the host computer based on an input force applied by the user to the physical object, where the input force is determined from a sensed deviation of the physical object in space. The input force opposes an output force applied by the actuator and is used to control a function of an application program, such as scrolling a document or panning or zooming a displayed view. An overlay force, such as a jolt or vibration, can be added to the output force in isometric mode to indicate an event or condition in the graphical environment.

Digital optical joystick with mechanically magnified resolution

A one or multiple axis digital joystick using incremental optical encoding with mechanical means for magnifying motion of the encoded medium to achieve higher resolution than otherwise attainable with the same optoelectronic components. Excellent linearity between shaft rotation and digital output results from elimination of backlash and preservation of rotary-only motion in the mechanical linkage between shaft and encoder disc. All electronic functions are implemented in a low-cost internal microcomputer that interfaces in serial or parallel mode with many system computers or microcomputers without additional circuitry. The microcomputer converts the incrementally encoded signals from the optoelectronic devices into absolute shaft-position information in a fail-safe manner. The joystick can be operated very rapidly without error because the encoded pulses to be counted are applied to microcomputer inputs that store the occurrence of each pulse until the microcomputer can process them. The stored program also ensures that each joystick has the same full-scale outputs despite minor mechanical variations from one joystick to another. In addition, it corrects errors caused by hysteresis in some of the optoelectronic components. The resulting joystick is field replaceable without any adjustments or recalibration.
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products