Abstract: A novel engine control method is disclosed in which in order to dampen the longitudinal oscillation of a vehicle such as an automobile and to prevent the deterioration of the exhaust gas purification performance thereof, the longitudinal acceleration or the engine speed of the vehicle is detected, and the detected vehicle acceleration or engine speed, as the case may be, is differentiated. A signal with the phase of the differentiated value advanced by a specific value is produced and used to compensate for the fuel injection time or a target value of throttle opening degree.

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: An asynchronous fuel injection control method for engines where the amount of increase of air sucked into the cylinder of the engine corresponding to the variation of the throttle angle is estimated on the basis of a physical model formula expressing the amount of the sucked air in the cylinder, and a pulse width according to which the fuel is injected by the asynchronous injection into the engine is determined on the basis of the estimated amount of increase of the sucked air.

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 form 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 knowledge-based system comprising a plurality of knowledge processors each of which includes a knowledge base and performs a reasoning process for replying to a request from a user, and a file server which is connected to the knowledge processors through a transmission line. When each knowledge processor cannot resolve the user's request with the knowledge base of its own, it sends a request message to the other processor or processors through the transmission line. Reply messages from the other knowledge processors complying with the request message are managed in correspondence with the requests by the file server which receives the reply messages, and when a predetermined condition has been established, a reply is given to the knowledge processor which is the source of the request.

Abstract: To perform the proper control conforming to the intent of a driver of an automotive vehicle under any condition which is encountered by the vehicle, optimum control methods are preliminarily classified in accordance with categories relating to conditions of the vehicle and categories relating to intents of the driver and the classified optimum control methods are stored in a memory, thereby selecting one of the control methods corresponding to the combination of the categories to which the vehicle condition and the driver's intent detected during the running of the vehicle belong.

Abstract: A method of controlling the quantity of fuel to be injected into an intake manifold for an engine by a fuel injection unit comprising the steps of identifying parameters indicative of a change in the dynamic characteristic of the fuel supply system due to changes in the environmental conditions including the atmospheric pressure and engine temperature, estimating the quantity of fuel to be supplied to the engine cylinder on the basis of the identified parameters, and controlling the quantity of fuel to be injected so that the ratio between the measured quantity of air supplied to the engine cylinder and the estimated quantity of fuel supplied to the engine cylinder attains the desired air-fuel ratio.

Abstract: A method of forming a three-dimensional stereo vision is disclosed in which, in order to prevent the erroneous detection of an object point in the conventional method using two image focusing lens systems, three image points of an object point formed by logically and/or physically selecting three image focusing lens systems and three image sensing surfaces from a multiplicity of image points on an image sensing surface by using the fact that a positional relation among three image points of the same object point is similar to the positional relation among the three image focusing lens systems, and the positional information of three selected image points on the image sensing surface is used for obtaining three-dimensional distance information of the object point.

Abstract: A dynamic network reconstruction method in which the node processing information such as a node processing volume and a ratio at which a node is satisfied is collected for all nodes to maintain an efficient network even when the characteristic of an object described in a condition clause is changed in a Rete network of a production system using the knowledge technology and the network is changed based on the node processing information.

Abstract: A processing method and apparatus for providing high speed computations including an exchange network for discriminating a first processing node which can execute a predetermined arithmetic operation. The processing node being capable of executing the arithmetic operation and determining a second processing node to which the output of the executed node is to be applied. The invention may include a plurality of first and second processing nodes in parallel to enable high speed computations.

Abstract: A method of resource allocating to respective unit processes is disclosed which comprises, in order to allow the resource allocation based on experimental know-how of operation without assistance of a system operator, the steps of storing information of each unit processor including its priority, and names and functions of the resources required by that unit processor; storing information of each resource including an operation status and a process content of that resource; storing experimental know-how obtained in the operation of the system; and carrying out resource allocation to the unit processes in accordance with the stored experimental know-how when the operation status of the system corresponds to the stored experimental know-how and in the order of priorities of the unit processes as stored by taking reference to the stored information of each resource when the operation status of the system does not correspond to the stored experimental know-how, thereby improving the utilization efficiency of the

Abstract: In a method of estimating a fracture point of a pipe line network, a group of estimating rules based on distribution characteristics of extraordinary pressure variation, pipe line characteristics and flow continuity requirements in a fracture accident monitoring system for such networks represented by a large scale water distribution pipe line network are applied to reference data of flow rates and pressures both obtained in the normal consumption condition, and to measured data of the flow rate and the pressure to estimate the fracture point. In the method, application order of individual ones of the group of the estimating rules is decided in accordance with data conditions of the pipe line network.

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.

Abstract: A calculation unit for calculating a gain matrix from process input and output information and a calculation unit for calculating a parameter estimation have an independent weight setting unit. A weight W.sub.i (k+1) is set at a current time point while taking into consideration of an affect of square of residual e.sup.

Abstract: Disclosed is a method for controlling fuel injection for an engine, in which, on the basis of a phenomenon that a part of fuel vaporized from a liquid film adhering to a wall surface of a fuel intake manifold remains in the intake manifold in the form of vapor fuel, the quantity of liquid film and the quantity of vapor fuel are estimated by using control parameters such as air mass flowing through a throttle valve, throttle opening, engine speed, air fuel ratio, etc.; the quantity of liquid film and the quantity of vapor fuel at a desired point of time are predicted on the basis of the result of estimation; and the quantity of fuel injection is controlled so as to make the air fuel ratio be a desired air fuel ratio. Further, the quantity of liquid film is estimated in the case where the data as to the air fuel ratio obtained by an O.sub.

Abstract: Method and system for controlling fluid transportation in a pipe network are disclosed. Pressures and flow rates at a predetermined number of points in the pipe network which number is smaller than the number of demand nodes in the pipe network are detected, demand volumes at the demand nodes are estimated based on known flow and pressure balance requirements for the pipe network and the detected flow rates and pressures, and the flow transportation in the pipe network is controlled in accordance with the estimated demand volumes such that the pressures at the demand nodes are brought to a reference pressure so that the pressures at the demand nodes at points other than the predetermined points are also brought to the reference pressure.

Abstract: A control method and apparatus incorporate a network model simulating hydraulic phenomena within a water distribution network whereby the pressures and flow rates within the water distribution network are controlled by an optimizing unit for inputting the current total demand as a model input and computing manipulated variables or control amounts for optimizing the pressures and flow rates in accordance with a network algorithm and a correction computing unit for computing the necessary control amount correction values for correcting the deviations from the estimated pressures and flow rates in accordance with a sensitivity matrix indicating the effects of variations in the control amounts on the pressures and flow rates.

Abstract: A control method for an open channel for obtaining a stable condition of flow of water by coping with a transient change therein, comprising the steps of representing each space divided by gates of the open channel by a three water tank model including three imaginary water tanks in series and two imaginary conduits connecting the imaginary water tanks with each other; solving this model so as to obtain estimated future values of parameters of a state of the open channel; and determining a degree of opening of each gate so as to keep a liquid level of the space constant on the basis of the estimated future values of the parameters.

Abstract: A water level control system for a reservoir includes steps of detecting water level, outflow rate and inflow rate of the reservoir detecting modified water level corresponding to the reservoir's content depending on the actual water level, the outflow rate and the inflow rate, and controlling the outflow rate of the reservoir in response to a deviation value between a set reference and the modified water level, thereby reducing the influence of undesirable water level fluctuation.