Patents by Inventor Davor D. Hrovat
Davor D. Hrovat has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10239529Abstract: A system includes a computing device programmed to receive a set of goals for a vehicle and identify a travel area for the vehicle for a time period. The computing device receives data indicating predictability of driving conditions of the travel area and determines that the predictability is sufficient to control the vehicle according to model predictive control. Controlling the vehicle includes determining instructions to control actuators related to the steering, propulsion and braking of the vehicle to minimize a cost function. The instructions are implemented for a first time slot. The time period is updated to remove the first time slot at the beginning and include an additional time slot at the end of the predetermined time period. The computing device determines an updated control solution, and implements the updated control solution for a second time slot.Type: GrantFiled: March 1, 2016Date of Patent: March 26, 2019Assignee: FORD GLOBAL TECHNOLOGIES, LLCInventors: Dimitar Petrov Filev, Jianbo Lu, Davor D. Hrovat
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Publication number: 20170253241Abstract: A system includes a computing device programmed to receive a set of goals for a vehicle and identify a travel area for the vehicle for a time period. The computing device receives data indicating predictability of driving conditions of the travel area and determines that the predictability is sufficient to control the vehicle according to model predictive control. Controlling the vehicle includes determining instructions to control actuators related to the steering, propulsion and braking of the vehicle to minimize a cost function. The instructions are implemented for a first time slot. The time period is updated to remove the first time slot at the beginning and include an additional time slot at the end of the predetermined time period. The computing device determines an updated control solution, and implements the updated control solution for a second time slot.Type: ApplicationFiled: March 1, 2016Publication date: September 7, 2017Applicant: Ford Global Technologies, LLCInventors: Dimitar Petrov Filev, Jianbo Lu, Davor D. Hrovat
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Patent number: 9231998Abstract: A vehicle control and computation system interfaces a task controller in the vehicle with a vehicle-specific computation manager in a cloud network. A wireless data channel couples the task controller and the cloud network. The task controller performs operational tasks in the vehicle using data-related resources in the cloud network. Upon initiating one of the operational tasks, the task controller sends a handshake signal to the computation manager as a resource request. The computation manager calls at least one cloud-based agent from a database of predetermined agents in response to the handshake signal. The task controller completes the operational task via communication with the called agent.Type: GrantFiled: January 22, 2014Date of Patent: January 5, 2016Assignee: FORD GLOBAL TECHNOLOGIES, LLCInventors: Jianbo Lu, Dimitar P. Filev, Davor D. Hrovat, John O. Michelini, Imad H. Makki
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Publication number: 20150207859Abstract: A vehicle control and computation system interfaces a task controller in the vehicle with a vehicle-specific computation manager in a cloud network. A wireless data channel couples the task controller and the cloud network. The task controller performs operational tasks in the vehicle using data-related resources in the cloud network. Upon initiating one of the operational tasks, the task controller sends a handshake signal to the computation manager as a resource request. The computation manager calls at least one cloud-based agent from a database of predetermined agents in response to the handshake signal. The task controller completes the operational task via communication with the called agent.Type: ApplicationFiled: January 22, 2014Publication date: July 23, 2015Applicant: Ford Global Technologies, LLCInventors: Jianbo Lu, Dimitar P. Filev, Davor D. Hrovat, John O. Michelini, Imad H. Makki
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Patent number: 8882635Abstract: A method for controlling a vehicle on an uphill incline includes automatically shifting a transmission to first gear, automatically stopping the engine, using wheel torque to maintain a one-way clutch engaged and to hold a transmission component against rotation, preventing vehicle rollback by automatically engaging a target gear and tying-up the transmission automatically restarting the engine, and automatically reengaging first gear.Type: GrantFiled: June 8, 2011Date of Patent: November 11, 2014Assignee: Ford Global Technologies, LLCInventors: Felix Nedorezov, Hong Jiang, Davor D. Hrovat, Steven G. Thomas, Alex O. Gibson, Roger L. Huffmaster
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Patent number: 8550961Abstract: A method for controlling an input clutch of a vehicle transmission during a tip-in includes using a current gear and rate of change of transmission input speed to determine a first torque modifier, if a peak or trough occurred in input speed, using the current gear and a difference between measured input speed and expected input speed to determine a second torque modifier, and changing a torque capacity of the clutch using said modifiers.Type: GrantFiled: June 9, 2011Date of Patent: October 8, 2013Assignee: Ford Global Technologies, LLCInventors: Hong Jiang, Matthew J. Shelton, Zhengyu Dai, Davor D. Hrovat, Bradley D. Riedle, Alexander P. McDonnell
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Patent number: 8398526Abstract: A method for controlling a transmission input clutch during a vehicle launch includes determining a desired clutch torque, a desired engine torque, a desired vehicle acceleration and a desired engine speed, determining a change in clutch torque and a change in engine torque with reference to the first and second errors and current operating conditions, applying to the clutch an updated clutch torque capacity whose magnitude is the sum of the desired clutch torque and the change in engine torque, and producing an updated engine torque whose magnitude is the sum of the desired engine torque and the change in engine torque.Type: GrantFiled: January 6, 2010Date of Patent: March 19, 2013Assignee: Ford Global Technologies, LLCInventors: Davor D. Hrovat, Michael G. Fodor, Hong Jiang, Ian Oldknow, Jahan Asgari
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Publication number: 20120312657Abstract: A method for controlling an input clutch of a vehicle transmission during a tip-in includes using a current gear and rate of change of transmission input speed to determine a first torque modifier, if a peak or trough occurred in input speed, using the current gear and a difference between measured input speed and expected input speed to determine a second torque modifier, and changing a torque capacity of said clutch using said modifiers.Type: ApplicationFiled: June 9, 2011Publication date: December 13, 2012Applicant: FORD GLOBAL TECHNOLOGIES, LLCInventors: Hong Jiang, Matthew J. Shelton, Zhengyu Dai, Davor D. Hrovat, Bradley D. Riedle, Alexander P. McDonnell
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Publication number: 20120316029Abstract: A method for controlling a vehicle on an uphill incline includes automatically shifting a transmission to first gear, automatically stopping the engine, using wheel torque to maintain a one-way clutch engaged and to hold a transmission component against rotation, preventing vehicle rollback by automatically engaging a target gear and tying-up the transmission automatically restarting the engine, and automatically reengaging first gear.Type: ApplicationFiled: June 8, 2011Publication date: December 13, 2012Applicant: FORD GLOBAL TECHNOLOGIES, LLCInventors: Felix Nedorezov, Hong Jiang, Davor D. Hrovat, Steven G. Thomas, Alex O. Gibson, Roger L. Huffmaster
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Patent number: 7998026Abstract: A method for controlling a transmission input clutch during a vehicle launch includes selecting a subject device that transmits torque between an input and an output, a providing a mathematical model of the subject device, such that the model employing only static relationships of engine speed and transmission input speed to a desired magnitude of torque produced by the subject device, using the model, the current engine speed and the current engine speed to determine the desired torque produced by the subject device, and adjusting the torque capacity of the clutch to the desired torque of the subject device determined from the model.Type: GrantFiled: January 17, 2008Date of Patent: August 16, 2011Assignee: Ford Global Technologies, LLCInventors: Michael G. Fodor, Davor D. Hrovat, Hong Jiang, Ian Oldknow, Jahan Asgari
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Publication number: 20100105523Abstract: A method for controlling a transmission input clutch during a vehicle launch includes determining a desired clutch torque, a desired engine torque, a desired vehicle acceleration and a desired engine speed, determining a change in clutch torque and a change in engine torque with reference to the first and second errors and current operating conditions, applying to the clutch an updated clutch torque capacity whose magnitude is the sum of the desired clutch torque and the change in engine torque, and producing an updated engine torque whose magnitude is the sum of the desired engine torque and the change in engine torque.Type: ApplicationFiled: January 6, 2010Publication date: April 29, 2010Applicant: FORD GLOBAL TECHNOLOGIES, LLCInventors: Davor D. Hrovat, Michael G. Fodor, Hong Jiang, Ian Oldknow, Jahan Asgari
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Publication number: 20090186743Abstract: A method for controlling a transmission input clutch during a vehicle launch includes selecting a subject device that transmits torque between an input and an output, a providing a mathematical model of the subject device, such that the model employing only static relationships of engine speed and transmission input speed to a desired magnitude of torque produced by the subject device, using the model, the current engine speed and the current engine speed to determine the desired torque produced by the subject device, and adjusting the torque capacity of the clutch to the desired torque of the subject device determined from the model.Type: ApplicationFiled: January 17, 2008Publication date: July 23, 2009Inventors: Michael G. Fodor, Davor D. Hrovat, Jahan Asgari, Hong Jiang, Ian Oldknow