Steven M Peters

US Patent:

8437890, May 7, 2013

Filed:

Jul 15, 2010

Appl. No.:

13/254761

Inventors:

Sterling J. Anderson - Allston MA, US
Steven C. Peters - Cambridge MA, US
Karl D. Iagnemma - Cambridge MA, US

Assignee:

Massachusetts Institute of Technology - Cambridge MA

International Classification:

G05D 1/00
G01C 22/00

US Classification:

701 3, 701 23

Abstract:

Various types and levels of operator assistance are performed within a unified, configurable framework. A model of the device with a model of the environment and the current state of the device and the environment are used to iteratively generate a sequence of optimal device control inputs that, when applied to a model of the device, generate an optimal device trajectory through a constraint-bounded corridor or region within the state space. This optimal trajectory and the sequence of device control inputs that generates it is used to generate a threat assessment metric. An appropriate type and level of operator assistance is generated based on this threat assessment. Operator assistance modes include warnings, decision support, operator feedback, vehicle stability control, and autonomous or semi-autonomous hazard avoidance. The responses generated by each assistance mode are mutually consistent because they are generated using the same optimal trajectory.

US Patent:

8543261, Sep 24, 2013

Filed:

Jul 15, 2010

Appl. No.:

13/254746

Inventors:

Sterling J. Anderson - Allston MA, US
Steven C. Peters - Cambridge MA, US
Karl D. Iagnemma - Cambridge MA, US

Assignee:

Massachusetts Institute of Technology - Cambridge MA

International Classification:

G05D 1/00
G05D 3/12
G01C 22/00

US Classification:

701 3

Abstract:

A method predicts and quantifies the threat posed to a human-operated device based on an optimal device trajectory through a constraint-bounded corridor. A model of the device together with a model of anticipated hazards and the current state of both the device and the hazards are used to iteratively generate an optimal device trajectory through a constraint-bounded corridor or region within state space. Device dynamics are forward-simulated over a time horizon. A method generates a threat assessment metric from the resulting sequence of optimal vehicle states. This threat assessment may be used to devise various types and levels of operator assistance. The human operator can control the device within a safe corridor or region. Threat assessment is based on the nearness of successive optimal trajectory predictions to limits of safe device handling rather than on deviation from a predefined path.

US Patent:

20100228427, Sep 9, 2010

Filed:

Feb 24, 2010

Appl. No.:

12/711935

Inventors:

Sterling J. Anderson - Allston MA, US
Steven C. Peters - Cambridge MA, US
Karl D. Iagnemma - Cambridge MA, US

Assignee:

MASSACHUSETTS INSTITUTE OF TECHNOLOGY - Cambridge MA

International Classification:

G06F 7/00

US Classification:

701 29, 701 1

Abstract:

An active safety framework performs trajectory planning, threat assessment, and semi-autonomous control of passenger vehicles in a unified, optimal fashion. The vehicle navigation task is formulated as a constrained optimal control problem. A predictive, model-based controller iteratively plans an optimal or best-case vehicle trajectory through the constrained corridor. This best-case scenario is used to establish the minimum threat posed to the vehicle given its current state, current and past driver inputs/performance, and environmental conditions. Based on this threat assessment, the level of controller intervention required to prevent collisions or instability is calculated and driver/controller inputs are scaled accordingly. This approach minimizes controller intervention while ensuring that the vehicle does not depart from a traversable corridor. It also provides a unified architecture into which various vehicle models, actuation modes, trajectory-planning objectives, driver preferences, and levels of autonomy can be seamlessly integrated without changing the underlying controller structure.

US Patent:

20140032017, Jan 30, 2014

Filed:

Apr 9, 2013

Appl. No.:

13/859203

Inventors:

Massachusetts Institute of Technology - , US
Steven C. Peters - Cambridge MA, US
Karl D. Iagnemma - Cambridge MA, US

Assignee:

Massachusetts Institute of Technology - Cambridge MA

International Classification:

G05D 1/00

US Classification:

701 3, 701 23, 701 21, 700275

Abstract:

Various types and levels of operator assistance are performed within a unified, configurable framework. A model of the device with a model of the environment and the current state of the device and the environment are used to iteratively generate a sequence of optimal device control inputs that, when applied to a model of the device, generate an optimal device trajectory through a constraint-bounded corridor or region within the state space. This optimal trajectory and the sequence of device control inputs that generates it is used to generate a threat assessment metric. An appropriate type and level of operator assistance is generated based on this threat assessment. Operator assistance modes include warnings, decision support, operator feedback, vehicle stability control, and autonomous or semi-autonomous hazard avoidance. The responses generated by each assistance mode are mutually consistent because they are generated using the same optimal trajectory.

US Patent:

20160092984, Mar 31, 2016

Filed:

Sep 30, 2014

Appl. No.:

14/502341

Inventors:

- Chicago IL, US
John Labuszewski - Chicago IL, US
Richard Co - Chicago IL, US
Steven Peters - Chicago IL, US
David Boberski - Chicago IL, US
Roberta Paffaro - Sao Paulo, BR
Greg Skony - Chicago IL, US

International Classification:

G06Q 40/04

Abstract:

Methods, devices, and systems for managing electronic messages of an electronic trading system in which orders are extracted from the electronic messages involve executing actions associated with respect to the orders and matching orders to counter orders. Matching orders may be based on a priority determined using a market quality index of the order and an associated market participant.