IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0290914
(2011-11-07)
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등록번호 |
US-8296003
(2012-10-23)
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발명자
/ 주소 |
- Wyatt, Christopher K.
- Fox, Ivan E.
- Jones, David
- Jones, Robert
|
출원인 / 주소 |
- Hydro-Gear Limited Partnership
|
대리인 / 주소 |
Neal, Gerber & Eisenberg LLP
|
인용정보 |
피인용 횟수 :
1 인용 특허 :
28 |
초록
▼
Electronic control systems and related control methods for controlling electric auxiliary motors for performing work, such as electric deck motors for mower blades. The apparatus is shown in use with a vehicle that includes a mowing deck. Features of the control systems allow for safe and efficient
Electronic control systems and related control methods for controlling electric auxiliary motors for performing work, such as electric deck motors for mower blades. The apparatus is shown in use with a vehicle that includes a mowing deck. Features of the control systems allow for safe and efficient use of the vehicle.
대표청구항
▼
1. A utility vehicle comprising: a plurality of vehicle systems comprising a steering system, an accelerator system, a power system, a traction system, and an auxiliary system;a plurality of operator interfaces for operating the vehicle each associated with one of the plurality of vehicle systems;a
1. A utility vehicle comprising: a plurality of vehicle systems comprising a steering system, an accelerator system, a power system, a traction system, and an auxiliary system;a plurality of operator interfaces for operating the vehicle each associated with one of the plurality of vehicle systems;a plurality of sensors each associated with at least one of the plurality of vehicle systems; andan electric motor control system in communication with the plurality of vehicle systems, the plurality of operator interfaces, and the plurality of sensors;the traction system comprising: at least one drivable wheel;at least one electric drive transaxle in communication with the drivable wheel;the auxiliary system comprising: an auxiliary mechanism; andan AC electric auxiliary motor in communication with the auxiliary mechanism;the electric motor control system comprising: a traction controller in communication with the steering system, the accelerator system, at least one of the plurality of operator interfaces, at least one of the plurality of sensors, the power system, the auxiliary system, and the at least one electric drive transaxle of the traction system; andan auxiliary controller in communication with the traction controller, the power system, and the AC electric auxiliary motor, wherein the auxiliary controller applies sensorless field oriented control to the AC electric auxiliary motor and controls the AC electric auxiliary motor via at least one DC control technique. 2. The utility vehicle of claim 1, wherein the auxiliary mechanism comprises a cutting blade mechanism. 3. The utility vehicle of claim 1, further comprising a data bus that provides communication between the traction controller and the auxiliary controller. 4. The utility vehicle of claim 1, wherein the AC electric auxiliary motor comprises an AC PMSM motor. 5. The utility vehicle of claim 1, wherein the auxiliary controller further comprises a 3-phase bridge circuit for driving the AC electric auxiliary motor. 6. A utility vehicle comprising: a plurality of vehicle systems comprising a steering system, an accelerator system, a power system, a traction system, and an auxiliary system;a plurality of operator interfaces for operating the vehicle each associated with one of the plurality of vehicle systems;a plurality of sensors each associated with at least one of the plurality of vehicle systems; andan electric motor control system in communication with the plurality of vehicle systems, the plurality of operator interfaces, and the plurality of sensors;the traction system comprising: at least one drivable wheel;at least one electric drive transaxle in communication with the drivable wheel;the auxiliary system comprising: a first auxiliary mechanism and a first AC electric auxiliary motor in communication with the first auxiliary mechanism; anda second auxiliary mechanism and a second AC electric auxiliary motor in communication with the second auxiliary mechanism;the electric motor control system comprising: a traction controller in communication with the steering system, the accelerator system, at least one of the plurality of operator interfaces, at least one of the plurality of sensors, the power system, the auxiliary system, and the at least one electric drive transaxle of the traction system; andan auxiliary control system in communication with the traction controller, the power system, and the first and the second AC electric auxiliary motors of the auxiliary system, the auxiliary control system comprising:a first controller;a second controller;a common interface in communication with the first and the second controllers;a first power inverter in communication with the common interface and the first AC electric auxiliary motor; anda second power inverter in communication with the common interface and the second AC electric auxiliary motor;wherein the first and the second controllers each apply sensorless field oriented control algorithms and DC control techniques to generate control signals and respectively send the control signals to the first and the second power inverters to respectively drive the first and the second AC electric auxiliary motors. 7. The utility vehicle of claim 6, wherein the first auxiliary mechanism and the second auxiliary mechanism each comprises a cutting blade mechanism. 8. The utility vehicle of claim 6, further comprising a first data bus that provides communication between the traction controller and the auxiliary control system. 9. The utility vehicle of claim 6, further comprising a second data bus that provides communication between the first controller and the second controller. 10. The utility vehicle of claim 6, wherein the first controller of the auxiliary control system is designated as a master and the second controller of the auxiliary control system is designated as a slave that is configured to be subordinate to the first controller. 11. The utility vehicle of claim 6, wherein the first and the second AC electric auxiliary motor each comprises an AC PMSM motor. 12. The utility vehicle of claim 6, wherein the first and the second power inverters each comprises a 3-phase bridge circuit to respectively drive the first and the second AC electric auxiliary motors. 13. A utility vehicle comprising: a plurality of vehicle systems comprising a steering system, an accelerator system, a power system, a traction system, and an auxiliary system;a plurality of operator interfaces for operating the vehicle each associated with one of the plurality of vehicle systems;a plurality of sensors each associated with at least one of the plurality of vehicle systems; andan electric motor control system in communication with the plurality of vehicle systems, the plurality of operator interfaces, and the plurality of sensors;the traction system comprising: at least one drivable wheel;at least one electric drive transaxle in communication with the drivable wheel;the auxiliary system comprising: an auxiliary mechanism; andan AC electric auxiliary motor in communication with the auxiliary mechanism;the electric motor control system comprising: a traction controller in communication with the steering system, the accelerator system, at least one of the plurality of operator interfaces, at least one of the plurality of sensors, the power system, the auxiliary system, and the at least one electric drive transaxle of the traction system; andan auxiliary controller in communication with the traction controller, the power system, and the AC electric auxiliary motor, the auxiliary controller comprising:a digital signal processor configured to receive and process data signals received from at least one of the plurality of vehicle systems, and output at least one driver signal;an analog/digital interface in communication with the digital signal processor and configured to receive analog data signals from at least one of the plurality of vehicle systems, convert the analog data signals to digital data signals, and send the digital data signals to the digital signal processor; andan oscillator in communication with the digital signal processor to effectuate output of a clocking signal for the digital signal processorwherein the auxiliary controller applies sensorless field oriented control to the AC electric auxiliary motor and controls the AC electric auxiliary motor via at least one DC control technique. 14. The utility vehicle of claim 13, wherein the auxiliary mechanism comprises a cutting blade mechanism. 15. The utility vehicle of claim 13, further comprising a data bus that provides communication between the traction controller and the auxiliary controller. 16. The utility vehicle of claim 13, wherein the AC electric auxiliary motor comprises an AC PMSM motor. 17. The utility vehicle of claim 13, wherein the digital signal processor is programmed with a field oriented control algorithm to generate the at least one driver signal. 18. The utility vehicle of claim 13, wherein the digital signal processor has processor executable instructions stored therein for performing the steps of: receiving three phase signals each indicative of one of each phase of AC current in the AC electric auxiliary motor;converting the phase signals into a DC reference frame utilizing a Clark Transform, a Park Transform, a rotor position estimator, and a speed estimator;receiving at least one control signal associated with the AC electric auxiliary motor and determining a desired speed of the AC electric auxiliary motor;applying an Inverse Park Transform and the Clark Transform to the DC reference frame to determine an error between an actual magnetic flux associated with the estimators and a desired magnetic flux associated with the desired speed; andgenerating a plurality of pulse-width modulated control signals based on the error to drive the AC electric auxiliary motor. 19. A utility vehicle comprising: a plurality of vehicle systems comprising a steering system, an accelerator system, a power system, a traction system, and an auxiliary system;a plurality of operator interfaces for operating the vehicle each associated with one of the plurality of vehicle systems;a plurality of sensors each associated with at least one of the plurality of vehicle systems; andan electric motor control system in communication with the plurality of vehicle systems, the plurality of operator interfaces, and the plurality of sensors;the traction system comprising: at least one drivable wheel;at least one electric drive transaxle in communication with the drivable wheel;the auxiliary system comprising: a first auxiliary mechanism and a first AC electric auxiliary motor in communication with the first auxiliary mechanism;a second auxiliary mechanism and a second AC electric auxiliary motor in communication with the second auxiliary mechanism;the electric motor control system comprising: a traction controller in communication with the steering system, the accelerator system, at least one of the plurality of operator interfaces, at least one of the plurality of sensors, the power system, the auxiliary system, and the at least one electric drive transaxle of the traction system; andan auxiliary control system in communication with the traction controller, the power system, and the first and the second AC electric auxiliary motors of the auxiliary system, the auxiliary control system comprising at least one controller that applies at least one sensorless field oriented control algorithm and DC control technique to generate control signals to drive the first and the second AC electric auxiliary motors. 20. The utility vehicle of claim 19, wherein the first auxiliary mechanism and the second auxiliary mechanism each comprises a cutting blade mechanism. 21. The utility vehicle of claim 19, further comprising a data bus that provides communication between the traction controller and the auxiliary control system. 22. The utility vehicle of claim 19, wherein the first and the second AC electric auxiliary motors each comprises an AC PMSM motor.
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