INCREMENTAL SIGNAL GENERATOR

• Main Authors: NIIMURA YOSHIHISA, KOBAYASHI TOMONORI
• Format: Patent
• Language: English
• Published: 28.05.1983
• Subjects: ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVEREDIN A SINGLE OTHER SUBCLASS; CONTROL OR REGULATING SYSTEMS IN GENERAL; CONTROLLING; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MEASURING; MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS ORELEMENTS; PHYSICS; REGULATING; SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES; TARIFF METERING APPARATUS; TESTING

PURPOSE:To obtain a signal producer having high noise resistance with no effect of the ambient temperatures, by using a resolver phase shifter serving as an electromagnetic guide device to a position detecting means of a rotor. CONSTITUTION:A reference voltage signal producer 1 for detection of position delivers reference voltage signals Vf2 and Vf3 for detection of position. The signal Vf2 is applied to a resolver phase shifter energizing voltage signal producer 4 as well as to a logic comparison 6; while the signal Vf3 is applied to a logic comparator 7. The producer 4 synchronizes with the signal Vf2 and produces a resolver phase shifter energizing voltage signal VfR having a frequency fR equivalent to one-to-integer level of the frequency f2 of the signal Vf2. Thus a resolver phase shifter 5 is energized. When the rotor of the shifter 5 is turned with the rotary input for detection of position, the shifter 5 delivers the resolver phase shifter output voltage signal Vf4 whose phase varies to the signal VfR and in proportion to the rotating angle. The signal Vf4 is fed to the comparators 6 and 7. The comparators 6 and 7 feed the signals Vf4 and Vf2 as well as Vf4 and Vf3 and then deliver the incremental signals P1 and P2 respectively on the basis of the prescribed logical conditions.