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Driving simulator

  • US 4,077,138 A
  • Filed: 05/13/1976
  • Issued: 03/07/1978
  • Est. Priority Date: 05/13/1975
  • Status: Expired due to Term
First Claim
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1. A device for the simulation of a car ride on a plane curved road laterally limited by an enclosure using a monitor for the picture of the road perspectively observed by the driver, the monitor being provided for the generation of the road picture, as well as using control devices such as accelerator pedal, brake pedal, clutch pedal, and steering wheel, and means for providing signals responsive to the various control devices, which devices influence the road picture, as well as using sound generating devices, comprising in combination:

  • several video signal generators by each of which one phase- and length-controlled vertical pulse and two phase- and length-controlled horizontal pulses for the brightening of one light spot pair are generated,means for generating a speed signal,a deflection voltage generator which is controlled by a speed-proportional pulse generator, which comprises an evaluation matrice having sections, means for switching the evaluation matrice in sections and fed by the speed signal, and which generates periodical voltages being composed of linear time sections for the horizontal and vertical shifting and for the width and height alternation of said light spots,a computing device for the computation of said speed signal, simulating a decreasing rotation - torque characteristic and supplying not only the speed signal but also the signal for the engine rotation, the clutch gripping or not gripping,means for programming a digital curve sequence generator,phase locking means and video signal generators,several standard curve function generators, which generate a sequence of curves on triggering by a digital curve sequence program generator being phase locked to said deflection voltage generator, which curve function generators comprise the same kind of elements and are functioning in principle like said deflection voltage generator, and which supply their output voltages to said video signal generators for the horizontal shifting of said light spot pairs,means connecting curve functional generators to system features,means for determining curvature of road, track angle and parallel track position and the like,a curvature function generator which is controlled by the same signals and comprises the same kind of elements and is functioning in principle like said curve function generators, and which generates an additional voltage being proportional to the curvature of the road,a subtraction device by which said additional voltage is subtracted from a voltage proportional to the angle of the steering wheel,a horizontal shifting control device to which the output of said subtraction device is supplied for influencing the picture according to deviations of the track angle and the parallel track position.

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