A method for improving accuracy of vehicle position determination, comprising: determining an initial vehicle position estimate based on GPS data, recording a sequence of sensor data from a sensor located with the vehicle, and refining the initial vehicle position estimate by performing pattern…
A floor plate (100) to couple an active suspension seat (1000) to a floor of a vehicle comprising: a lower portion (120) comprising a flat sheet of material extending within a plane and having a plurality of apertures (122) formed therethrough that correspond to a plurality of mounting features…
An apparatus comprising: a floor covering having an upper surface, a lower surface, an edge, and an interior volume enclosed by the upper and lower surfaces and edge, the upper and lower surfaces covering an area of at least 0.5 m 2 and separated by a distance of less than 40 mm; an…
A method is described for operating a vehicle which includes a payload compartment and a first and second surface engaging devices as well as a suspension system. The suspension system has a first controllable suspension element for exerting a force between the first surface engaging device and the…
An active suspension is disclosed for us with a surface vehicle for operating along a path and which includes a payload and payload compartment. The active suspension has a controllable suspension element for modifying the displacement between the payload and the path, responsive to vertical…
A method for actively suspending a real plant (16) in a vehicle includes modifying a control signal on the basis of a difference between a property of the real plant (16), as indicated by the response of the real plant to the control signal, and a property of a nominal plant.
A mobile navigation system includes a graphical display for presentation of map information. Map features are selected for presentation on a display. Characteristics for display are also selected. The characteristics for display include a scale for display that varies across the display. An image…
An audio system for a vehicle includes an audio source. A controller (21,22) modifies an audio signal from the audio source with one of a first and a second signal processing operation in response to a user input. The first signal processing operation configures the audio signal for listening…
An electromagnetic transducer including a stator and an armature, the armature defining a first axis and being driven to ride between first and second couplers back and forth relative to the stator along the first axis. The second coupler is configured to permit movement of the armature along a…
An active wheel suspension for suspending a wheel assembly (12,14) from a sprung body of a wheeled vehicle (10), and adapted to permit a centre (68) of the wheel assembly (12,14) to move relative to the sprung body through a jounce and rebound travel and defining a wheel centre (68) locus path…
In response to a change in a circuit parameter of a converter delivering power to a load, the converter is operated in a mode in which additional power is supplied to the load by a capacitive element that is in parallel with the converter, the circuit parameter including a parameter other than…
An active suspension system for a motor vehicle, in which a controller has a first input and an output. The first input receives a roll command -signal generated in response to a turn executed by the vehicle. The output provides a control signal for causing a chassis of the vehicle to roll to an…
An actuator (10) for an active suspension system includes an armature (16) and a housing (18) enclosing an interior. The interior has a volume that varies in response to movement of the armature (16). A wall of the housing (18) forms a first aperture (30) through which air passes in response to…
An electromagnetic actuator (8) includes a stator assembly (12) mounted to a center pole (28) formed of material having high magnetic permeability and functions as a return path for the magnetic field generated when current is passed through coils (20,22) in the stator assembly. When current is…
A vehicle sound system is constructed and arranged to establish a sound image at a desired location spaced from the sound source.
An internal combustion engine may be provided with independently controllable valves, fuel injectors and ignition elements that may be used to start the engine without a separate auxiliary device such as an electric starter motor. The engine may fire the cylinders under a startup mode of control at…
The invention is directed to an improvement in mechanisms and techniques for accepting user input. An apparatus for accepting a user input is described comprising a display, detector and controller. The display is configured to show an initial output. The detector is positioned in a location with…
A system in a vehicle suspension having an actuator includes a clamp circuit powered by movement of the actuator to generate a passive damping characteristic of the actuator.
An electromechanical actuator (12) in a vehicle suspension system includes a housing having a first section (18) adapted to affix to a vehicle body (20) and a second section (14) adapted to affix to a vehicle wheel assembly (22) suspended to the vehicle body (20), the first and second sections…
A system for operating a fuel cell comprises a fuel cell having an anode, an electrolyte and a cathode. An external power supply circuit connects the anode and cathode. There are a fi rst supplier for supplying a fuel to the anode, a second supplier for supplying oxidizer to the cathode, and a…
An active suspension system for a vehicle including elements for developing and executing a trajectory plan responsive to the path on which the vehicle is traveling. The system may include a location system (24) for locating the vehicle, and a system for retrieving a road profile corresponding to…
An active suspension for a wheeled vehicle is configured for improved occupant comfort, with an advantageously low maximum horizontal kinetic displacement of the wheel assembly, and particularly low horizontal inertial and tire loads, as the suspension moves through jounce and rebound under active…
a vibration reducing apparatus comprising, a baffle subject to vibration, a first electroacoustical transducer characterized by a first mass seated in the baffle, a second electromechanical transducer mechanically connected to said first transducer or said baffle in the vicinity of the periphery of…
An active suspension system for a vehicle including elements for developing and executing a trajectory plan responsive to the path on which the vehicle is traveling. The system may include a location system for locating the vehicle, and a system for retrieving a road profile corresponding to the…
An acoustic assembly including an electroacoustical transducer and an acoustic element, separate from the acoustical transducer, designed and constructed to be an element of a structural pillar of an automobile.