Abstract: A computer-based system and method for ascertaining anomalies in an electric motor, includes computing and processing a set of Fast Fourier Transforms (FFT's) of the supply current waveforms for a motor known to be in a normal condition to create a feature set of input vectors. The input vector assignments for all possible cluster groupings 1 through n are derived using Ward's method. The method includes computing the Approximate Weight of Evidence (AWE) for each cluster grouping then selecting that count associated with a maximum AWE and designating this count as s. For each cluster in each grouping 1 through s, the method finds the member vector farthest from the cluster's centroid and defines this as the cluster's radius.

Abstract: An artificial neural network is trained to recognize inputted thermal and physical features of a printed circuit board, for providing settings for a reflow oven for obtaining acceptable soldering of the printed circuit board.

Abstract: An artificial neural network (ANN) classifier provides a series of outputs indicative of a series of classes to which input feature vectors are classified. The ANN provides only one output for each input feature vector to partition said input into one class. The one output of the classifier is coupled to the interrupt input of an associated digital computer or CPU. Upon receipt of the output, the CPU immediately interrupts a main program and executes an interrupt service routine which is triggered by the output of the classifier. In this manner, the CPU is immediately accessed in the interrupt mode by the transition of one of the output class processing elements when activated.

Abstract: An artificial neural network is trained to recognize inputted thermal and physical features of a printed circuit board, for providing settings for a reflow oven for obtaining acceptable soldering of the printed circuit board.

Abstract: A method of arbitrating between various modes of operation involved in controlling the movement of a robot vehicle from a current position in which the modes are given a sequential priority in such manner that no mode can be activated unless all previous modes in the sequence are not actuated. The sequential priority is abort command, joystick control, object avoidance, missed target procedure, and dead reckoning.

Abstract: A velocity control system for a rotating disc having a spiralling track thereon and comprising an arm rotatable about a fixed axis, a stylus attached to such arm and positioned to follow the spiralling track, and logic responsive to the position of the arm to produce a control signal indicative of the position of the arm. Also provided is a prime mover responsive to the control signal to rotate the disc at an angular velocity to produce a velocity at the point of contact between the stylus and the disc which is a predetermined function of the position of the stylus.

Abstract: An interrupt signal generating means comprising a digital-to-analog (D/A) converter and means for supplying to said D/A converter a series of binary numbers at least some of which point to service subroutines in a data processor, and when converted to dc voltages by the D/A converter have values which are equal to dc voltages originating in various peripheral devices which indicate a need for servicing by certain ones of the processor subroutines. A plurality of voltage comparators compare the dc output of the D/A converter with the condition indicating voltages generated by the peripheral devices and when equality of dc voltages occurs on the inputs of a given voltage comparator, an interrupt signal is generated and supplied to the processor which then accesses the subroutine pointed to by the corresponding binary number.