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US 8,135,531 B2Granted
Predictive vehicle controller
AssigneeNMHG Oregon, LLC
InventorsSide Zhao, Chenyao Chen
Life of this patent
Estimating the term…
Abstract
Due to time delays, vehicle speed may become difficult to control. A predictive speed controller is configured to receive a desired speed request for a vehicle and simulate vehicle responses according to the desired speed request. A compensation value is derived from the simulated vehicle responses that compensates for the time delays of the vehicle. The actual speed of the vehicle is then controlled according to the compensation value.
Claims24
A vehicle speed control system, comprising:
- a controller configured to:
- receive a desired speed request for a vehicle;
- simulate vehicle responses associated with the desired speed request;
- derive a compensation value from the simulated vehicle responses associated with delays in the vehicle responding to the desired speed request;
- and
- control the actual vehicle speed according to the compensation value.
3 more elements
A method, comprising:
- receiving a speed control signal for controlling the speed of a vehicle;
- predicting a first vehicle speed with a time delay according to the speed control signal;
- predicting a second vehicle speed without the time delay according to the speed control signal;
- identifying a difference between the first predicted vehicle speed and the second predicted vehicle speed;
- and
- using the identified difference between the first predicted vehicle speed and the second predicted vehicle speed as feed-back for adjusting the speed control signal.
3 more elements
A Pedal Based Speed Control (PBSC) system for an industrial vehicle, comprising:
- a first sensor configured to identify different pedal positions corresponding to different selected travel speed;
- a second sensor configured to identify an actual vehicle speed;
- and
- a processor configured to derive an intended travel speed that predicts what the vehicle travel speed would have been if the vehicle had little or no time delay responding to the selected travel speed, the processor further configured to control the actual vehicle speed according to the difference between the selected travel speed and the intended travel speed.
1 more element
Dependencies are inferred from the claim text.