Abstract: Sensors capable of sensing the proximity of a golf club head and of generating a sensor signal in response thereto are provided. The sensors include control sensors used to communicate user commands and club-head data sensors used to analyze a golf club swing. A computer program is provided to direct a computer to analyze signals generated by the control sensors to interpret commands from a training system user. The computer also analyzes signals generated by club-head data sensors to determine the path, height, impact speed, and face impact angle of the golf club head as a function of the user commands. Analyzed club-head data sensor signals are used to calculate and graphically represent the resulting flight path of the struck golf ball with respect to a graphically simulated fairway and green presented on a video display unit. The simulated fairway and green are defined by data stored within the data storage device.

Abstract: A maintenance system for a machine (12) controlled by a programmable logic controller (14) having a memory (20) which stores input data received from the machine (12) and output data communicated to the machine (12). The maintenance system includes a computer (33) interfaced to the memory to be non-intrusive with respect to the programmable logic controller (14). The computer (33) is operative to monitor a state of the machine (12) over a plurality of manufacturing cycles, the state including at least a portion of the input data and the output data. The computer (33) is further operative to detect a fault condition for a component of the machine (12) based upon a state of a current manufacturing cycle and a state of a previous manufacturing cycle. A display device (32) is in communication with the computer (33) to alert an operator of the fault condition and to graphically display a location of the component within the machine (12) to facilitate a corrective measure by the operator.