Abstract: An apparatus for controlling the opening/closing of a mechanism for clamping a work machined by a numerically controlled machine tool, comprising a driver for the clamping mechanism. The apparatus controls the opening/closing of the clamping mechanism on the basis of measured data on the distance of a main shaft provided in the machine body from the origin position of the machine, measured data on the moving speed of the main shaft, coordinate values of a clamp pawl of the clamping mechanism and data on a region where the clamping mechanism is opened.

Abstract: A user definable mathematical function is implemented on a data processing system including a data terminal. The user definable mathematical function includes a user definable mathematical formula having at least one operand which is as yet unspecified or undetermined, but which will be retrieved from a source or location specified in the mathematical function. Execution of the user defined mathematical function is initiated by a data terminal selector device associated with the user definable mathematical function. Upon execution of the user defined mathematical function, a variable value is retrieved from the specified source and substituted for the unspecified operand in the user defined mathematical formula. The user defined mathematical formula is executed and a result of the execution provided. A method for providing and using such a user definable mathematical function is also provided.

Abstract: The invention is directed to a method for determining the fields of permanent magnet structures with a surface or boundary solution method for the magnetic material with linear characteristics with small susceptibility and large permeabilities of the ferromagnetic materials.

Abstract: An apparatus for and method of automatically tuning control parameters of a servo or spindle drive system controlled by a numerical control unit is disclosed. The numerical control unit employs an automatic tuning device that automatically selects a tuning program and test run program associated with a selected control parameter. The tuning device test runs the servo or spindle according to the test run program selected and changes and controls the status value data measured in accordance with the control parameter selected. The invention also relates to a method of changing a criterion for the feature values of a control parameter, a method of comprehensively determining the feature values where there are a plurality of tuning conditions, and a method of sampling the status value data of the servo or spindle.

Abstract: Fuzzy logic programming is provided for machine and process controllers. New input and output instructions are devised for ladder diagram programming, as well as methods of downloading fuzzy logic instructions from a programming terminal to a programmable controller processor and methods for executing such instructions in the programmable controller processor.

Abstract: Control method and apparatus for a moveable control member with n>3 observed states. The apparatus incorporates a sliding mode control system operable to maintain the state point of the moveable member on a predetermined non-linear hyperplane having n-1 dimensions. The hyperplane is such that, if the state point is maintained thereon, the maximum rate of change of the highest order observed state does not exceed that of which the control apparatus is capable. The sliding mode control system include sa digital processor operable to reference n-1 low order observed states to the predetermined hyperplane to establish a desired value of the highest order observed state. The control system compares such desired value with the observed highest order state, and implements the control action necessary to maintain the state point on the predetermined hyperplane.

Abstract: A parallel manufacturing system for use in a manufacturing plant that utilizes a massively parallel computer determines the scheduling of all manufacturing operations used in connection with the manufacture of the products made in the plant. The system utilizes an explosion procedure to determine the net requirements for all components used in the manufacturing operations, and then schedules any manufacturing operations necessary to make the required components.

Abstract: The instantaneous position of a carriage (1) is made explicit in the form of data transmitted via a connection (10) to a circuit (9) by a signal converter (11) and a sensor (12) reading marks (13) on a rule (14). One of the marks (15) acts as a preselected reference mark. During a referencing sequence, the carriage is moved in one direction until it reaches a stop (18). The circuit then causes the appearance of a position error which attains a critical value, causing reversal of the direction of movement of the carriage and activation of detection of the preselected reference.

Abstract: To embody a method for automatically editing multi-faced polyhedron machining processes in a manner capable of efficiently operating a machine tool, a processor of an automatic programming apparatus causes a first one of definition statements associated with upper face machining to be transferred from a first file of a memory device of the programming apparatus to a second file and to be deleted from the first file (S13), and sequentially performs transfer of upper face machining process definition statements, specifying the same tool number as that specified by the first one of the upper face machining process definition statements, to the second file, and deletion of these statements from the first file. Similar processing is sequentially performed for each of different tool numbers, whereby the upper face machining process definition statements for each tool number are collectively stored in the second file.

Abstract: A control device for outputting a selected one of machine control programs in response to program selection signals received from an external device, the device including a memory for storing the programs in relation to respective program identification numbers, a signal input portion having terminals for receiving the respective program selection signals, an arrangement for correlating the identification numbers of selected ones of the programs with respective code values corresponding to respective combinations of states of the program selection signals, a correlation memory for storing a relationship between the identification numbers of the selected programs and the code values, an encoder for encoding the combination of states of the program selection signals received at the terminals into the corresponding code value, an arrangement for reading one of the program identification numbers which corresponds to the code value obtained by the encoder, and an arrangement for outputting to the machine one of th

Abstract: An embroidery pattern data processor for sewing an embroidery based on section data representing the locations of the vertexes of polygonal sections dividing a closed area surrounded by a given outline for embroidering the closed area. The data processor has a memory for storing the section data, a read-out device for reading out the section data, and a processor for determining the type of sections, computing running stitch data, and computing needle location data for embroidering the sections. Additionally, the processor automatically computes a running stitch route within the sections so that the embroidering operation is carried out without producing cross threads which, in the past, had to be manually removed.

Abstract: A system is provided for tuning at least one control parameter of a controller in a control loop wherein the system includes an oscillation function not in series with the controller for selectively causing the control loop to oscillate at a tuning frequency, while the controller is in control of the process. While oscillating at the tuning frequency, a tuner is responsive to the tuning gain of the control loop and its tuning frequency for determining control parameters for tuning the controller.

Abstract: A production execution method of the present invention includes the steps of storing in a storage facility at least one kind of material, among various kinds of material used to produce desired goods, calculating a producible quantity of goods based on an already procured quantity or already stocked quantity of the various kinds of material using a calculation processor, and deciding a quantity equal to or below the producible quantity as a production execution quantity. Thereafter, the production executing quantity is set by being divided into two or more smaller quantities wherein a required quantity of the material is then taken out from the storage facility for each set quantity for each setting so that production of the decided production execution quantity of goods can be executed in sequence.

Abstract: A control system for a countercurrent pulp washing process in which the pulp is formed as a pulp mat on at least one moving filter surface and the mat is supplied with rinse water to replace water in the pulp mat thereby reducing the soda loss in the mat before it is removed from the filter surface. The process is characterized by at least one predictable process variable including dissolved solids retained in the pulp mat. The system comprises a trainable neural network having a plurality of input neurons having input values applied thereto and output neurons for providing output values and means for training the neural network to provide predicted values for the predictable process variables.

Abstract: An embroidery data producing apparatus for an embroidery machine which forms embroidery stitches, based on the embroidery data having information about stitch positions comprises a CPU, RAM and ROM. The RAM has a pattern data memory for storing pattern data which represents outlines of a pattern where embroidery will be given, and a embroidery data memory for storing the made embroidery data. The CPU reads the pattern data stored in an external memory device and stores the pattern data in the pattern data memory. The CPU stores the inclination angle input through the keyboard by an operator in the RAM. The CPU sets a pair of facing outlines which extend to a predetermined embroidery executing direction based on the pattern data stored in the pattern data memory. The CPU sets stitch positions on the first outline of a pair of the outlines according to a predetermined thread density.

Abstract: A cylindrical interpolation system for machining a cylindrical surface of a cylindrical workpiece, wherein a tool diameter correcting means (104) obtains a tool center path by calculating a tool diameter offset vector for a machining shape specified with reference to an assumed orthogonal coordinate system, and an interpolating means (107) interpolates the tool center path and outputs an interpolation pulse (PCyi) related to an assumed linear axis and an interpolation pulse (PZi) related to a cylindrical axis. To effect a reverse conversion from the assumed orthogonal coordinate system to the cylindrical coordinate system, a pulse converting means (108) converts the interpolation pulse (PCyi) into an interpolation pulse (PCi) for rotating the rotary axis. A block-start correction component calculating means (105) and synchronous correction component calculating means (109) calculate correction components (Vcy, .DELTA.Vcy), and these correction components (Vcy, .DELTA.

Abstract: A floating point addition/subtraction apparatus is internally provided with a leading one anticipator having redundant binary numeral generators, intermediate-carry/intermediate-sum generators, and scan-value generators. Each of the redundant binary numeral generators performs a subtraction with respect to two binary operands, a binary minuend and a binary subtrahend, to generate a redundant binary numeral Zsd having "-1", "0" or "1" at each digit thereof. Each of the intermediate-carry/intermediate-sum generators generates an intermediate carry C.sub.k and an intermediate sum S.sub.k in accordance with Zsd.sub.k =2C.sub.k +S.sub.k using a redundant binary numeral Zsd.sub.k positioned at a k.sup.th digit from a least significant digit of the redundant binary numeral Zsd and a redundant binary numeral Zsd.sub.k+1 positioned at a (k+1).sup.th digit so that C.sub.k =Zsd.sub.k when Zsd.sub.k+1 ="1" or "-1" and C.sub.k =0 when Zsd.sub.k+1 ="0".

Abstract: An object of the present invention is to provide a practical method for machining a sculptured surface. One of the characteristics of a concrete method for machining a sculptured surface so as to accomplish the object is that a patch table of a sculptured surface as surface information data for sculptured surface machining is configured so that a tool path can be generated using the inverse offset method for various surfaces such as a Bezier surface or a Ferguson surface and another characteristic is that over cutting during tool path generation on the basis of the inverse offset operation can be corrected.

Abstract: A method and an apparatus for operating directly with the program code of a process for determining the gradients of process variables of interest with respect to process parameters. Each process will contain one or more process variable declarations wherein each process variable declaration defines a process variable. There will also be one or more process function assignments associated with each process variable, wherein each process function assignment assigns a value to the associated process variable. One or more gradient variables will be introduced into the process for each process variable of interest, wherein each gradient variable corresponds to and represents the partial derivative, or gradient, of the process variable of interest with respect to a parameter whose value affects the value of the process variable of interest.

Abstract: The method for mixing textile fibers utilizes a computer which is inputted with data concerning the characteristics of the fibers of the individual fiber bales to be processed as well as the data indicative of the desired characteristics of the board sliver or yarn which is to be manufactured from the fiber mixture obtained from the fibers of the individual bales. From the inputted data, the computer, in accordance with a predetermined computing algorithm, calculates a component distribution which comes close to the estimated component distribution and which satisfies the desired characteristics of the car sliver or yarn characteristics. The computer may also effect a correction of the computed component distribution taking into account boundary conditions with additional inputted information.