초록 ▼

There is provided a driving force control system for a front-and-rear wheel drive vehicle, which is capable maintaining an optimum slip condition of the drive wheels even on a low-friction road surface, ensuring a proper grip of rear wheels even on a low-friction road surface or a downhill slope, ev

There is provided a driving force control system for a front-and-rear wheel drive vehicle, which is capable maintaining an optimum slip condition of the drive wheels even on a low-friction road surface, ensuring a proper grip of rear wheels even on a low-friction road surface or a downhill slope, even when the driver operates the steering wheel while the vehicle is performing decelerating travel on such a road, and smoothly performing the assistance of an electric motor when the vehicle is accelerated without developing a torque step, thereby ensuring stable traveling and excellent acceleration and drivability. The front-and-rear wheel drive vehicle drives the front wheels by an engine, and rear wheels by an electric motor via an electromagnetic clutch. The target driving force for driving the vehicle is calculated based on at least a vehicle speed and an accelerator pedal opening. The present traveling condition of the vehicle is determined. The driving force for driving the vehicle is controlled based on the calculated target driving force in dependence on the determined traveling condition of the vehicle.

대표청구항 ▼

There is provided a driving force control system for a front-and-rear wheel drive vehicle, which is capable maintaining an optimum slip condition of the drive wheels even on a low-friction road surface, ensuring a proper grip of rear wheels even on a low-friction road surface or a downhill slope, ev

There is provided a driving force control system for a front-and-rear wheel drive vehicle, which is capable maintaining an optimum slip condition of the drive wheels even on a low-friction road surface, ensuring a proper grip of rear wheels even on a low-friction road surface or a downhill slope, even when the driver operates the steering wheel while the vehicle is performing decelerating travel on such a road, and smoothly performing the assistance of an electric motor when the vehicle is accelerated without developing a torque step, thereby ensuring stable traveling and excellent acceleration and drivability. The front-and-rear wheel drive vehicle drives the front wheels by an engine, and rear wheels by an electric motor via an electromagnetic clutch. The target driving force for driving the vehicle is calculated based on at least a vehicle speed and an accelerator pedal opening. The present traveling condition of the vehicle is determined. The driving force for driving the vehicle is controlled based on the calculated target driving force in dependence on the determined traveling condition of the vehicle. f claim 1, further comprising a controller coupled to the instant start ballast and the transformer, wherein the controller is configured to independently operate the instant start ballast and the transformer, and wherein the controller is further configured to turn the transformer on when the lamp is turned off. 10. The ballast system of claim 1, further comprising a controller coupled to the instant start ballast and the transformer, wherein the controller is configured to turn the transformer off after a predetermined amount of time has passed without receiving a signal to turn the fluorescent lamp on. 11. The ballast system of claim 1, wherein the transformer is configured to apply less than about 5 V to the filament. 12. The ballast system of claim 1, wherein the instant start ballast is a high frequency ballast. 13. A method of operating a fluorescent lamp, comprising: coupling the fluorescent lamp to a ballast system, the ballast system comprising: an instant start ballast, wherein the instant start ballast is configured to deliver a striking voltage to the fluorescent lamp, and wherein the instant start ballast is further configured to regulate the current to the fluorescent lamp when the fluorescent lamp is on; and a transformer, wherein the transformer is configured to deliver voltage to a filament of the fluorescent lamp when the fluorescent lamp is off; operating the transformer such that voltage is delivered to the filament of the fluorescent lamp; operating the instant start ballast such that a striking voltage is applied to the fluorescent lamp causing the fluorescent lamp to produce light; and directing light from the fluorescent lamp to a mold assembly within a lens forming apparatus. 14. The method of claim 13, wherein the instant start ballast is configured to apply a striking voltage of between about 250 to about 400 V. 15. The method of claim 13, the voltage supplied by the transformer is sufficient to keep the filament of the fluorescent lamp at a temperature proximate the optimal operating temperature of the filament. 16. The method of claim 13, wherein the voltage supplied by the transformer is sufficient to keep the fluorescent lamp at a temperature proximate the optimal operating temperature of the fluorescent lamp. 17. The method of claim 13, wherein the transformer is a toroidal transformer. 18. The method of claim 13, wherein the transformer and the instant start ballast are independently operable. 19. The method of claim 13, wherein the ballast system further comprises a controller coupled to the instant start ballast and the transformer, wherein the controller is configured to independently operate the instant start ballast and the transformer. 20. The method of claim 13, further comprising turning off the transformer prior to operating the instant start ballast. 21. The method of claim 13, wherein the transformer is configured to apply less than about 5 V to the filament. 22. The method of claim 13, wherein the instant start ballast is a high frequency ballast. 23. An apparatus for preparing an eyeglass lens, comprising: a first lens curing unit, wherein the first lens curing unit comprises a fluorescent lamp, wherein activating light produced by the fluorescent lamp is directed toward a mold assembly during use; and a ballast system to control the fluorescent lamp, wherein the ballast system comprises an instant start ballast and a transformer, wherein the instant start ballast is configured to deliver a striking voltage to the fluorescent lamp; and wherein the instant start ballast is further configured to regulate the current to the fluorescent lamp when the fluorescent lamp is on; and wherein the transformer is configured to deliver voltage to a filament of the fluorescent lamp when the fluorescent lamp is off. 24. The apparatus of claim 23, wherein a substantially clear eyeglass lens is formed in a time period of less than about 1 hour. 25. The apparatus of claim 23, furth er comprising a second lens curing unit comprising an activating light source and heating system, wherein the activating light source is configured to direct activating light toward the mold assembly during use; and wherein the heating system is configured to heat the interior of the second lens curing unit. 26. The apparatus of claim 23, further comprising a second lens curing unit comprising an activating light source and heating system, wherein the activating light source is configured to direct activating light toward the mold assembly during use; and wherein the heat system is configured to heat the interior of the second lens curing unit; and wherein the apparatus further comprises a conveyor system configured to convey the mold assembly from the first lens curing unit into and through the second lens curing unit. 27. The apparatus of claim 23, wherein the instant start ballast is configured to apply a striking voltage of between about 250 volts to about 400 volts. 28. The apparatus of claim 23, wherein the voltage supplied by the transformer is sufficient to keep the filament of the fluorescent lamp at a temperature proximate the optimal operating temperature of the filament. 29. The apparatus of claim 23, wherein the voltage supplied by the transformer is sufficient to keep the fluorescent lamp at a temperature proximate the optimal operating temperature of the fluorescent lamp. 30. The apparatus of claim 23, wherein the transformer is a toroidal transformer. 31. The apparatus of claim 23, wherein the transformer and the instant start ballast are independently operable. 32. The apparatus of claim 23, further comprising a controller coupled to the instant start ballast and the transformer, wherein the controller is configured to independently operate the instant start ballast and the transformer. 33. The apparatus of claim 23, further comprising a controller coupled to the instant start ballast and the transformer, wherein the controller is configured to independently operate the instant start ballast and the transformer; and wherein the controller is further configured to turn the transformer off before turning the instant start ballast on. 34. The apparatus of claim 23, further comprising a controller coupled to the instant start ballast and the transformer, wherein the controller is configured to independently operate the instant start ballast and the transformer; and wherein the controller is further configured to turn the transformer on when the lamp is turned off. 35. The apparatus of claim 23, further comprising a controller coupled to the instant start ballast and the transformer, wherein the controller is configured to turn the transformer off after a predetermined amount of time has passed without receiving a signal to turn the fluorescent lamp on. 36. The apparatus of claim 23, wherein the transformer is configured to apply less than about 5 volts to the filament. 37. The apparatus of claim 23, wherein the instant start ballast is a high frequency ballast. 38. The apparatus of claim 23, wherein the fluorescent lamp has a peak light intensity at a range of about 385 mm to about 490 nm. 39. The apparatus of claim 23, further comprising a filter disposed directly adjacent to the fluorescent lamp, the filter being configured to manipulate an intensity of the activating light emanating from the fluorescent lamp. 40. The apparatus of claim 23, further comprising an anneal unit, the anneal unit comprising an anneal unit heating system, wherein the anneal unit heating system is configured to heat the interior of the anneal unit. 41. The apparatus of claim 23, further comprising an anneal unit, the anneal unit comprising an anneal unit heating system, wherein the anneal unit heating system is configured to heat the interior of the anneal unit; and wherein the anneal unit heating system further comprises an anneal unit conveyor system configured to convey the mold assembly through the anneal unit. 42. The apparatus of