초록 ▼

An inventive encoding system that expects, accepts and interprets both normal and abnormal states of a sensor array, and that preferably further recognizes a zero state as a malfunction. The system is "absolute," in that it allows detection of the best fit detectable position of a movable object wit

An inventive encoding system that expects, accepts and interprets both normal and abnormal states of a sensor array, and that preferably further recognizes a zero state as a malfunction. The system is "absolute," in that it allows detection of the best fit detectable position of a movable object with an accuracy equal to the resolution which is equal to one-half the physical displacement of sensors or sources in an array. Such absolute references may be used to define a position detector which properly detects the position of an object after power is applied, even though the object may have moved further after power is removed. As a result, the inventive encoder does not require a battery back-up to detect position accurately after a power failure. This functionality is highly advantageous when detecting shaft position of a multi-turn shaft. The inventive encoding system is also scalable so that there are few limitations in deployment. Truth table logic is employed in a logic function that is designed to implement the foregoing attributes of the inventive encoding system.

대표청구항 ▼

An inventive encoding system that expects, accepts and interprets both normal and abnormal states of a sensor array, and that preferably further recognizes a zero state as a malfunction. The system is "absolute," in that it allows detection of the best fit detectable position of a movable object wit

An inventive encoding system that expects, accepts and interprets both normal and abnormal states of a sensor array, and that preferably further recognizes a zero state as a malfunction. The system is "absolute," in that it allows detection of the best fit detectable position of a movable object with an accuracy equal to the resolution which is equal to one-half the physical displacement of sensors or sources in an array. Such absolute references may be used to define a position detector which properly detects the position of an object after power is applied, even though the object may have moved further after power is removed. As a result, the inventive encoder does not require a battery back-up to detect position accurately after a power failure. This functionality is highly advantageous when detecting shaft position of a multi-turn shaft. The inventive encoding system is also scalable so that there are few limitations in deployment. Truth table logic is employed in a logic function that is designed to implement the foregoing attributes of the inventive encoding system. US-6041029, 20000300, Iida et al., 369/047.18 19930700, Compton et al.; US-5375110, 19941200, Nakane, 369/047; US-5396476, 19950300, Asthana, 369/044.25; US-5424884, 19950600, Nonaka, 360/074.1; US-5467238, 19951100, Lee et al.; US-5486970, 19960100, Lee et al.; US-5850321, 19981200, McNeil et al., 360/106; US-5881042, 19990300, Knight; US-6084753, 20000700, Gillis et al., 360/128; US-6307832, 20011000, Novotny et al., 369/013.33