Gm Global Technolgoy Operations, Inc.

Lord Corporation

Jihan Ryu

Flavio Nardi

Nikolai K Moshchuk

Kevin Austin O'Dea

Bakhtiar Brian Litkouhi

Jin-Woo Lee

Kwang-Keun Shin

Shih-Ken Chen

Chandra S Namuduri

Weiwen Deng

Paul Black

Doug Swanson

Hualin Tan

Yong Han Lee

William Golpe

Doug G Pedersen

David J Clark

Youssef A Ghoneim

Dorel M Sala

Jan Henning Aase

Russell E Altieri

Askari Badre-Alam

Matthew K Ferguson

Andrew D Meyers

Stephen C Southward

Richard J Knoll

Hong S Bae

Raviraj U Nayak

Cheng-Foo Chen

Michael D Janowski

Nikolai K Moshohuk

Nikolai K Moschuk

Edward McLenon

O Kyung Kwon

Bridget M O'Brien-Mitchell

Doug A Swanson

The present subject matter relates to systems and methods for active vibration control system speed monitoring and control in which a speed protection monitor configured to receive index pulses as inputs to monitor the speed of one or more force generators. A rotary actuator control system can be connected in communication with the speed protection monitor and the one or more force generators, wherein the rotary actuator control system is configured to shut down or adjust the speed of the one or more force generators if the one or more force generators are determined to be operating at undesired speeds.

Monitor for active vibration control

Improved active vibration control (AVC) devices, systems, and related methods are provided herein. An AVC device includes a controller adapted to receive real-time aircraft information and adjust at least one control parameter as a function of the real-time aircraft information is provided. An AVC device is adapted to detect changes in real-time aircraft information, as the aircraft moves from a steady state to transient performance, low and high air speeds, or vice versa. An AVC system (e.g., AVCS) includes one or more sensors, one or more actuators, and a controller adapted to receive real-time aircraft information and adjust at least one control parameter. In some aspects, a method of controlling vibration within an aircraft includes receiving vibration information from at least one sensor, receiving real-time aircraft information from an avionics system, adjusting at least one control parameter used in a control algorithm, and generating a force command.

Active vibration control devices, systems, and methods

Improved active vibration control (AVC) devices (), systems, and related methods are provided herein. An AVC device () includes a controller () adapted to receive real-time aircraft information and adjust at least one control parameter as a function of the real-time aircraft information is provided. An AVC device is adapted to detect changes in real-time aircraft information, as the aircraft moves from a steady state to transient performance, low and high air speeds, or vice versa. An AVC system (e.g., AVCS) includes one or more sensors (), one or more actuators (), and a controller () adapted to receive real-time aircraft information and adjust at least one control parameter. In some aspects, a method of controlling vibration within an aircraft includes receiving vibration information from at least one sensor (), receiving real-time aircraft information from an avionics system (), adjusting at least one control parameter used in a control algorithm, and generating a force command.

A system for enabling a driver of a vehicle to visibly observe objects located in a blind spot includes, but is not limited to, a rear view viewing device that is mounted to the vehicle and configured to be electronically adjustable. The system further includes a sensor that is associated with the vehicle and that is configured to detect a location of an object with respect to the vehicle and to generate a first signal indicative of the location of the object. The system further includes a processor that is communicatively coupled with the sensor and that is operatively coupled with the rear view viewing device. The processor is configured to obtain the first signal from the sensor and to command the rear view viewing device to adjust such that the object is visibly observable to the driver when the processor receives the first signal.

System and method for enabling a driver of a vehicle to visibly observe objects located in a blind spot

A method is provided for estimating vehicle velocity for a vehicle using a single-antenna global positioning system (GPS). An absolute speed and a course angle of the vehicle is measured using the single-antenna GPS. The yaw rates of the vehicle are measured independently of the GPS. An integrated yaw rate of the vehicle is calculated as a function of the measured yaw rates over a period of time. A yaw angle is determined as a function of a reference yaw angle and the integrated yaw rate. Aside slip angle is calculated as a function of the estimated yaw angle and the course angle provided by the GPS. The vehicle velocity is determined as a function of the absolute speed and the side slip angle. The vehicle velocity is provided to a vehicle dynamic control application.

GPS-enhanced vehicle velocity estimation

A vehicle steering system includes an automatic steering control unit configured to control the vehicle steering system when in an automatic operational state and a driver intervention unit is configured to determine driver intervention during the automatic operational state. The driver intervention unit comprising a decision software module configured to determine driver intervention.

Systems and methods for driver intervention in an automatic steering system

A system and method is provided for determining a lateral velocity and a longitudinal velocity of a vehicle equipped. The vehicle includes only one antenna for a GPS receiver and a magnetic compass. A magnitude of a velocity vector of the vehicle is determined. A course angle with respect to a fixed reference using the single antenna GPS receiver is determined. A yaw angle of the vehicle is measured with respect to the fixed reference using a magnetic compass. A side slip angle is calculated as a function of the course angle and the yaw angle. The lateral velocity and longitudinal velocity is determined as a function of the magnitude of the velocity vector and the side slip angle.

Longitudinal and lateral velocity estimation using single antenna GPS and magnetic compass

A method of stabilizing a vehicle is provided. The vehicle is travelling at a forward speed and a lateral speed, and comprises a lateral acceleration sensor, a yaw sensor adapted to detect an actual yaw rate of the vehicle around a central axis, a steering mechanism adapted to steer the vehicle by a steered yaw rate, and an electronic stability control system. The method comprises determining the forward speed of the vehicle with the electronic stability control system, determining a yaw error rate based upon a difference between the actual yaw rate of the vehicle and the steered yaw rate, determining the vehicle is in an unstable condition by comparing the yaw error rate to a first predetermined yaw rate, computing a calculated lateral speed based on acceleration data from the lateral acceleration sensor, the forward speed, and the actual yaw rate in response to determining the vehicle is in the unstable condition, calculating a correction factor based on the calculated lateral speed of the vehicle and the forward speed of the vehicle, and adjusting operation of the electronic stability control system by the correction factor.

Method of operating an electronic stability control

A system for providing vehicle roll control that controls the friction-force of dampers provided at the wheels of the vehicle. The system includes a lateral acceleration sensor for determining the lateral acceleration of the vehicle, a steering angle sensor for determining the steering angle of the vehicle and a speed sensor for determining the speed of the vehicle. The system calculates a current control signal for one or more of the dampers based on the lateral acceleration and/or the steering angle, and uses one or both of the current control signals to control the friction-force of the inside, outside or both of the dampers.

Vehicle roll control method using controllable friction force of MR dampers

A method to monitor alignment of wheels of a vehicle through analysis of a GPS signal includes monitoring the GPS signal, determining an actual trajectory of the vehicle based upon the GPS signal, monitoring a vehicle sensor indicating an expected change in vehicle heading, determining an expected trajectory of the vehicle based upon the vehicle sensor, and indicating misalignment of the wheels of the vehicle based upon a comparison of the trajectories.

Diagnosis of wheel alignment using GPS

Systems and methods for detecting road bank and determining road bank angle include determining a road bank angle as a function of difference in slip angle where the difference in slip angle is a function of difference in course angle and difference in yaw angle.

Systems and methods for controlling a vehicle along a road with a road bank

An analytical methodology for the specification of progressive optimal compression damping of a suspension system to negotiate severe events, yet provides very acceptable ride quality and handling during routine events. In a broad aspect, the method provides a progressive optimal unconstrained damping response of the wheel assembly with respect to the body. In a preferred aspect, the method provides a progressive optimal constrained damping response of the wheel assembly with respect to the body, wherein below a predetermined velocity a conventional damper force is retained.

Suspension system with optimized damping response

An analytical methodology for the specification of progressive optimal compression damping of a damper of a suspension system to negotiate a multiplicity of severe events, yet provides very acceptable ride quality and handling during routine events. The damping response of the damper is optimized based upon a progressive optimal constrained events damping function derived from a low envelope curve incorporated with a predetermined damper force acting on the wheel center below a predetermined wheel center velocity, u, based on ride and handling considerations for a given vehicle or vehicle model according to the prior art methodology, whereby the low envelope curve is constructed utilizing a one degree of freedom nonlinear mechanical system model or a quarter car nonlinear mechanical system model.

Suspension system with optimized damper response for wide range of events

A method to control a vehicle includes monitoring desired vehicle force and moment, monitoring real-time corner constraints upon vehicle dynamics which includes monitoring corner states of health for the vehicle, and monitoring corner capacities for the vehicle. The method further includes determining a desired corner force and moment distribution based upon the desired vehicle force and moment and the real-time corner constraints, and controlling the vehicle based upon the desired corner force and moment distribution.

Architecture and methodology for holistic vehicle control

A system and a method for detecting the eyes of a driver of a vehicle using a single camera. The method includes determining a set of positional parameters corresponding to a driving seat of the vehicle. The camera is positioned at a pre-determined location inside the vehicle, and a set of parameters corresponding to the camera is determined. The location of the driver's eyes is detected using the set of positional parameters, an image of the driver's face and the set of parameters corresponding to the camera.

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Rochester Hills, MI, United States of America

Jihan Ryu