Motohisa Funabashi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
Abstract: Method and system of selecting desirable time series data pieces from many time series data pieces. Characteristics extracted from time series data pieces are applied to neurons and neuron state fluctuations are supervised and evaluated through execution of neurocomputing to select desirable time series data.
Abstract: An adaptive control system for categorized engine conditions is disclosed in which the engine conditions to be controlled are discriminated and classified in accordance with the driver's intent and the vehicle operating conditions. It is decided that a given engine control condition is continued or the transition is under way between different control conditions as a history judgement, and a vehicle operation parameter is determined in accordance with the determined history. At the same time, in accordance with the control condition decided and classified, an operating signal is applied to the engine with an operating parameter thus determined and the result of engine control response is observed to update the adaptive parameter.
Abstract: The present specification discloses an engine control system for controlling the acceleration response characteristics of a vehicle. The engine control system of the present invention operates generated torque of the engine by at least one of measured parameters including an intake air amount per one rotation of the engine, an intake manifold inner pressure and a throttle opening and adjusts the ignition timing in such a direction that a desired acceleration response characteristics is obtained in accordance with a generated torque value.
Abstract: In order to highly efficiently compress images of large quantity obtained by the photographing from a plurality of view points, provision is made of means for photographing a three-dimensional body or the like from a plurality of view points, means for forming a correlated image having a high correlation relative to the neighboring images by effecting mean processing for the neighboring images that are photographed, means for constructing, in the form of tree structure data, a set of the photographed images and the images formed by the mean processing, means for estimating the image of a lower rank by the one rank higher image in the tree structure data, and means for encoding an estimated error.
Abstract: In an active suspension control system for a vehicle, a unit for adjusting the distance between each wheel and the body, i.e., a vehicle body height adjusting unit is added to the conventional suspension using a spring and a damper in combination. Since the amount of adjustment to be done by the body height adjusting unit is determined in accordance with the cause of generation of such a vibration of the vehicle as pitching or rolling, the suspension control system further comprises sensors for detecting pitching and rolling angles of the vehicle, respectively, a sensor, associated with each wheel, for detecting a relative displacement in the distance between each wheel and the body and an arithmetic unit, for example, a microcomputer for determining the amount of adjustement by the body height adjusting unit on the basis of the output of each sensor.
Abstract: A process control system for controlling a process exhibiting both linear behavior and non-linear behavior with a plurality of control quantities has a knowledge base storing therein universal facts, production rules including expert's empirical rules, meta rules describing flows of inferences, algorithm methods by mathematical expressions and membership functions referenced in fuzzy inference and a complex inference mechanism.
Abstract: An electronic control system for an internal combustion engine includes a plurality of first sensors for measuring a drive action taken in accordance with a driver's intent, a plurality of second sensors for measuring operating conditions of an engine, a plurality of actuators for controlling the engine, a unit for setting a target reference by selecting one among a plurality of target references for engine control, and a unit for manipulating the actuators responsive to the established target reference to control the engine.
Abstract: An apparatus for and method of compensating time delay of measured data in an electric control unit for an automobile which has a measuring unit for measuring a data value representing at least one state of a controllable device mounted on the automobile and an operation processing unit for calculating at least one control value to be applied to the controllable device on the basis of output data values of the measuring means. Successive output data values of the measuring unit are stored in a memory unit. An estimation value representing the one state of the controllable device at a future time point is calculated at a current time point on the basis of an output data value of the measuring unit at a current time point and at least one output data value previously stored in the memory unit. The operation processing unit calculates the control value on the basis of the estimation value to thereby compensate for a data delay for the measuring unit.
Abstract: An intake manifold of an internal combustion engine is structured either to keep the temperature in the intake manifold constant or to allow the temperature in the intake manifold to be controlled from outside thereof for thereby increasing the engine output. For this purpose, following measures are employed:(1) The intake manifold is made of a material having a low heat conductivity;(2) The outer periphery of the intake manifold is covered with an adiabatic material;(3) The intake manifold is of a double walled structure; and(4) The intake manifold is provided with a cooler or a heater.
Abstract: In order to control all revolution numbers of an engine at high precision, combustion of each cylinder is reliably controlled. For the combustion control of each cylinder, there are controlled measurement timings of an air volume as well as a fuel volume contributive to the combustion and exhaust gas being a combustion result, calculation timings of a fuel injection volume and an ignition timing, and output timings of fuel injection and/or ignition. These timings are synchronized by crank angle positions from a reference point such as top dead center. Particularly as to the measurement timing, a delay time of a gas stream between a measurement spot and the cylinder is compensated in terms of a crank angle corresponding thereto, whereby the variables to be measured are synchronized.
Abstract: A process control system for controlling actions of a process is provided as a qualitative model to which the fuzzy theory is applied to infer and control the process. The process control system includes differentiation apparatus for determining the amounts of displacement of different process amounts with respect to time, qualitative fuzzy inference apparatus for making inference of qualitative process actions, and centroid arithmetic apparatus for converting the qualitative values of inferred control target process amounts into the appropriate amount of control.
Abstract: The disclosure concerns the control of fuel injection for automatic control of engines simulating the accuracy of fuel injection control that would be obtained with flow sensors and pressure sensors, without actually employing such sensors. This is true because the theoretical model used for estimating the flow is matched with actual system performance. Maching is obtained by estimating a level of the atmospheric pressure, a flow of air passing through a throttle valve and a flow of air flowing into the cylinder, and controlling the fuel injection based upon the flow of air flowing into the cylinder. The result is a highly accurate estimation of the valves.
Abstract: An electronic control system for an internal combustion engine includes a plurality of first sensors for measuring a driver action taken in accordance with a driver's intent, a plurality of second sensors for measuring operating conditions of an engine, a plurality of actuators for controlling the engine, a unit for setting a target reference by selecting one among a plurality of target references for engine control, and a unit for manipulating the actuators responsive to the established target reference to control the engine.
Abstract: In a fuel supply control method of an automobile engine wherein a plurality of parameters representing an operating condition of the engine are measured, and a fuel supply quantity is determined based on the measured values so as to attain a target air-fuel ratio, an amount of air flowing into each cylinder in an n-th stroke (n is an arbitrary integer) is calculated for prediction by using the measured parameters in a stroke preceding the n-th stroke, and the fuel supply quantity is determined by the predicted value of the amount of air in the n-th stroke and a target value of the air-fuel ratio in the n-th stroke.
Abstract: The present invention is capable of registering and reading out a logical element for which the state of the output pin changes. The system includes an input side reading out circuit for reading out the kind of logical element and the states of all the input pins thereof, a decision circuit for deciding the presence of the output pin that the status change is produced on when a logical operation is carried out according to the kind of logical element, an output side reading out circuit for reading out the information related to the logical element of the output pin producing the status change, and an exchange sending circuit for sending each information read out from the output side reading out circuit to the desired registering and reading out circuit for precise high speed logic simulation of a large scale logic circuit containing MOS-type logical elements.
Abstract: A suspension control apparatus for a vehicle comprises a measuring unit for measuring relative motion between sprung mass and unsprung mass at each of wheels, a decision unit for discriminatively determining occurrence and convergence of at least one of rolling or pitching and bouncing or unsprung mass vibration on the basis of measurement data available from the measuring unit, and a control unit for controlling at least one of damping coefficient and spring constant in the suspension characteristics on the basis of the result of decision made by the decision unit.
Abstract: A system for electronically controlling an engine for a vehicle is disclosed which is of the kind electrically controlling the opening of a throttle valve controlling the quantity of intake air supplied to the engine. The electronic engine control includes setting a target acceleration of the vehicle according to an amount of depression of an accelerator pedal by the driver, comparing the target acceleration with an actual acceleration of the vehicle to find an error therebetween, setting a target value of the throttle valve opening on the basis of the acceleration error, and controlling the throttle valve opening until it attains the target value.
Abstract: The fuel injection quantity required for maintaining the air-fuel ratio of the mixture supplied to each cylinder of an engine at a desired value is determined by a deposition rate X at which injected fuel deposits and forms a film mass on an intake manifold wall of the engine and a vaporization rate 1/.tau. at which the film mass vaporizes from the manifold wall, a current film mass quantity M.sub.f determined from the calculated X and l/.tau. and the fuel quantity by the preceding injection, a desired fuel quantity Q.sub.a /(A/F) to be supplied air-fuel ratio A/F in accordance with the following equation ##EQU1## an air-fuel ratio feedback correction factor .gamma. aiming at a stoichiometric air-fuel ratio based on a signal generated by an O.sub.2 sensor is calculated and an actual quantity of fuel corresponding to G.sub.f .multidot..gamma. is injected. A film mass quantity in a current computing cycle is based on the film mass quantity calculated during the previous computing cycle.
Abstract: An electronic engine control method and apparatus, which detects acceleration of a vehicle in the travelling directions, derives its differential or displacement difference, i.e., derivative of acceleration, thereby detects the longitudinal oscillation state of the vehicle in acceleration or deceleration and controls the output torque pattern of the engine so as to cause its phase to be opposite to the phase of the pattern of the derivative of acceleration derived.
Abstract: A method of controlling fuel injection to an internal combustion engine by electronic circuits. A plurality of cylinders installed in the internal combustion engine are divided into two groups and two electronic circuits for controlling the respective two cylinder groups are provided. By comparing between the outputs of the two electronic circuits, whether the operations of the respective electronic circuits are normal or not is judged. The fuel injection controlled by the electronic circuit which has been judged to be abnormal is stopped, while the fuel injection controlled by the electronic circuit which has been judged to be normal is continued. Thus, the internal combustion engine is driven solely by one group of cylinders.