Abstract: An integrated real-time information dissemination system for aircraft within a predetermined range of an air traffic control facility (ATC), includes airborne components for receiving ground-disseminated data concerning dynamic conditions, such as air traffic and meteorological conditions, and for storing data concerning static features, such as terrain and moving map features, within the range of the ATC. An airborne computer and display is provided in a subject aircraft for generating a continuously updated integrated graphic display of representations of the dynamic and static conditions. The graphic display is egocentric with respect to the ATC until the subject aircraft has been identified to the ATC, after which the graphic display is egocentric with respect to the subject aircraft. The airborne computer includes a computer program for detecting potential collisions with the dynamic or static features and for issuing a warning based upon the level of collision threat.

Abstract: A braking distance verification system is disclosed which makes use of a specially designed pulse to voltage converter circuit and a portable computer-based data acquisition system to measure grade, speed, and distance information of any rail vehicle. The preferred embodiment of the device is particularly adapted for mass transit systems. It provides a method and apparatus for physical verification, under actual test conditions, that an adequate braking distance has been provided in each block of a signal block design system. The portable system may be used with any vehicle braking system which provides an electronic wheel tachometer or equivalent, or may utilize a portable doppler radar if tachometer information is not available.

Abstract: An automotive engine is provided with a fuel control system having a fuel injector for injecting a properly controlled quantity of fuel into cylinders of the automobile engine. The control system is adapted to cause the fuel injector to inject an increased quantity of fuel when an engine control value, relative to which the automotive engine changes its speed of rotation for a decision as to whether the automotive engine is in an acceleration state, is higher than a critical level. The control system also detects the transmission coupled to the automobile engine, and changes, when a temperature of the automotive engine is lower than a preselected temperature, the critical level according to the type of transmission detected.

Abstract: A system for protecting the catalytic exhaust gas combustion devices of an automotive engine featuring two sets of cylinders, which system has, for each set of cylinders: a first sensor housed in the exhaust pipe downstream from the catalytic combustion device and designed to supply a first signal as a function of the temperature of the combustion device; a comparing block for supplying a second signal in response to the first signal reaching a threshold value indicating a predetermined temperature of the combustion device; and a central processing unit of an electronic fuel injection system, designed to cut off a fuel supply to the injectors of the aforementioned set of cylinders as a function of the aforementioned second signal.

Abstract: There is disclosed a manufacturing method and apparatus which allows for the efficient assembly of the exposure module of a xerographic reproduction system. The system uses an array of deformable mirrors fabricated in one embodiment, on a monolithic silicon substrate as a light modulation element. The substrate package is positioned with respect to a set of molded support brackets such that a multi-axis adjustment of this single element allows for the alignment of the entire optical set. A system of cameras is used, in conjunction with a computer, to control the substrate positioning and to determine optimum efficiency of the system. The computer adjusts the package around the various rotational axis in sequential fashion.

Abstract: In a system for controlling active suspensions of a motor vehicle, having fluid suspensions for the respective wheels, a longitudinal acceleration sensor, control valves for the respective suspensions, and a controller for adjusting the control valves to charge and discharge a fluid into and out of the fluid suspensions so as to control the vehicle attitude, a hysteresis circuit is provided to receive a longitudinal acceleration signal from the acceleration sensor, for hysteresis processing of the signal, whereby microvibration components included in the acceleration signal is removed. The width of hysteresis is increased as the vehicle speed increases because the amplitude of microvibration becomes larger as the vehicle speed increases. For more stable vehicle attitude control, a dead-zone circuit is provided to cut fluctuations of the hysteresis-processed signal within a specific width in the vicinity of zero.

Abstract: A method and apparatus for dynamically leveling the attitude of a vehicle using a low power fully active suspension system. The apparatus connects the suspension and body of the vehicle and includes a hydraulic damper having a pressure cylinder forming a working chamber in which a piston and rod assembly is movably disposed. The apparatus further comprises a flow control device fluidly communicating with the working chamber on one side of the piston for adding and exhausting damping fluid therefrom to a central pressure source, and an accumulator fluidly communicating with the working chamber on the opposite side of the piston. The apparatus having flow restriction valving for selectively controlling the flow of fluid with said working chamber. The flow restriction valving located between the flow control device and the accumulator.

Abstract: An apparatus for measuring the alignment of two or more adjacent lugs while the lugs are in motion is provided. The alignment measuring apparatus includes a first scanner for detecting the leading edge of a first lug and a second scanner for detecting the leading edge of a second lug positioned adjacent the first. Timing means are provided for measuring the time differential between detection of the first and second lugs and computation means are provided for determining whether adjacent lugs are within alignment tolerances based in part upon the differential time measurement. Alternatively, differential distance measuring means are provided to directly measure the misalignment between the lugs.

Abstract: The invention relates to a method and apparatus for limiting road speed in electrically controlled diesel engines. The output signal of the road-speed transducer or, if the road-speed transducer is defective, the output signal of the engine speed transducer is evaluated by means of pregiven thresholds. In the presence of a simultaneous clutch signal and a quantity signal which is less than a pregiven injection quantity a waiting time is made available in advance of the quantity reduction so that when the clutch is actuated, fuel can be metered when the clutch pedal is depressed or the vehicle can be started on a hill. No transmission signal is necessary for limiting road speed whereby manipulations on the road-speed limitation are prevented.

Abstract: An integrated stabilized optical and navigation system comprising a gimballed platform, acceleration and velocity sensors associated with the gimballed platform, platform positioning apparatus responsive to outputs of the acceleration and velocity sensors for maintaining a desired orientation of the gimballed platform and a navigation computer being responsive to the outputs of the acceleration and velocity sensors for providing an output indication of location.

Abstract: A method is provided for synchronizing the time scale of a test device driver (12) with an e-beam tester. Test device driver (12) generates a test pattern which is applied to the functional inputs (18) of a device under test (16). A trigger and a synchronizing signal are generated with an identical time relationship to the test pattern. The trigger is applied to the trigger input of e-beam tester electronics and e-beam generator (38). The synchronizing signal is caused to appear on device under test (16). Using e-beam tester electronics and e-beam generator (38), waveforms are created of the synchronizing signal appearing on device under test (16) and test response signals also appearing thereon in response to application of the test pattern to functional inputs (18). The time relationship between the synchronizing signal and the test response signals can then be established through the waveforms.

Abstract: A double cycle prover is used to calibrate meters which require long proving runs. A small volume or piston prover and a master flowmeter, are coupled in series with the meter under test, then the master flowmeter is calibrated against the small volume prover, and the meter under test is calibrated against the master flowmeter. A signal processor combines the proving cycles, to relate the small volume prover to the meter under test. A density meter is connected to the flow channel, if the meter under test is a mass flowmeter, and the signal processor uses the density measurement to relate the mass flow measurement of the meter under test with the volume flow measurement of the master flowmeter.

Abstract: Aircraft/engine performance is determined by the method of the present invention, wherein the performance characteristics are defined by learned performance parameters. The method includes the steps of learning the performance parameters of the aircraft/engine combination, for a given flight, using previously learned performance parameters and current observations. Then, based on the performance parameters learned from the learning step, a prediction is made of the performance of the aircraft/engine combination for subsequent flights.

Abstract: A method and apparatus is disclosed for controlling actuation of a passenger restraint system in a vehicle. The apparatus includes an accelerometer for providing a time domain vibratory electric signal having frequency components indicative of a vehicle crash condition. An A/D converter converts the accelerometer signal into a digitized signal. A fast Fourier transform device transforms the digitized time domain vibratory electric signal over at least two time intervals into frequency domain signals. The amplitudes of corresponding frequency bins of the frequency domain signals are summed over the entire frequency spectrum, bin-to-bin. A microcomputer monitors the sum of the amplitudes of at least one selected frequency bin of the frequency domain signals and actuates the passenger restraint system when the sum is greater than a predetermined threshold thereby indicating a particular type of vehicle crash is occurring.

Abstract: In a battery powered vehicle such as an forklift truck, control data is stored in a memory (39) by an operation of the keys (11a, 11b, 11c, 11d, 11e) on a control panel (10) mounted at the operation seat, and a part of the control data is selected by a control circuit (30) and transmitted to a travelling control circuit. The travelling control circuit controls a travelling motor (101) with the characteristics decided by the selected data and the selected control data is indicated on a display panel (12). A plurality of data used for maintenance administration, such as a cumulative travelling distance or cumulative operating hours, are stored in a memory and one of the data for maintenance administration is arbitrarily indicated on the display panel (12) and converted to meet the specified indication specification through the control circuit (30) by operation of the keys (11e) on said control panel (10).

Abstract: The present invention is a method for estimating the speed of a vehicle with antilock brake devices by obtaining a vehicle speed as a reference value for determining a slip ratio of a wheel based upon a wheel speed, an acceleration and a deceleration. At least the deceleration is based upon a differentiated value of a highest wheel speed from all wheels. In a vehicle in which the drive wheels are rigidly coupled, at least the deceleration is based upon a differentiated value of a highest value of the lowest wheel speed of the drive wheels and the wheel speeds of the driven wheels.

Abstract: In a vehicle anti-lock brake controller, a differential slip between the wheels on each side of an axle is sensed to detect a yaw condition and the wheel with the lower slip value is identified as the high coefficient wheel. In response to a detected yaw condition, the monitored value of slip of the high coefficient wheel is controlled about a target slip value that has an initial value less than the critical slip value at the beginning of antilock controlled braking to minimize longitudinal force imbalance and which is thereafter ramped to the critical slip value to maximize longitudinal braking forces.

Abstract: A transmission testing apparatus employs an electric motor as a driving power source. The electric motor is coupled with a speed increasing device for providing engine speed equivalent revolution speed at low speed for realizing engine equivalent low inertia characteristics. The electric motor is associated with a control unit which stores engine torque simulated torque variation characteristics, one of which is selected on the basis of an engine load simulated value. The control unit controls the output torque of the motor toward a torque demand derived on the basis of an engine speed simulated value derived according to the selected one of torque variation characteristics.

Abstract: The invention is directed to an arrangement for controlling a braking force applied to each of right and left road wheels individually depending upon a braking condition, with a hydraulic braking pressure supplied to each of wheel brake cylinders through actuators respectively. The actuators are controlled by the braking force control system wherein output signals of wheel speed detectors are fed into first and second detecting circuits respectively by which the braking conditions of the road wheels are detected. Then, the detected signals are fed into a first driving circuit which produces driving signals fed to the actuators on the basis of an output signal fed from either of the detectors for one road wheel having a tendency to be locked first.

Abstract: A distributorless ignition system is shown having a timing controller that is responsive to one cylinder of the engine reaching top dead center for predicting the times at which one or more subsequent cylinders in the firing order should enter dwell and fire based upon the current engine speed, current battery voltage and the time interval between one cylinder reaching top dead center and the preceding cylinder reaching top dead center. At low operating speeds the controller plans for the firing of a cylinder utilizing triple precision calculations. At midrange speeds and high speeds, however, the controller utilizes double precision calculatons. At very high speeds, the controller of the present invention plans the firing of two or more cylinders at the same time forcing the cylinders into overlapping dwell.