3654479

Information

• Patent Grant
• 3654479

• References
• Source

• Patent Number

  3,654,479

• Date Filed

  Not available

• Date Issued

  Tuesday, April 4, 1972
  53 years ago

• CPC

  • G05D3/20 - using a digital comparing device
  • G01P3/44 - for measuring angular speed
  • G01P3/565 - by measuring or by comparing the phase of generated current or voltage
  • G01R25/00 - Arrangements for measuring phase angle between a voltage and a current, or between voltages or currents
  • G04F10/06 - by measuring phase
  • G04G7/00 - Synchronisation
  • G05D3/18 - delivering a series of pulses
  • H02P23/186 - of one shaft by controlling the prime mover
  • Y10S388/902 - Compensation
  • Y10S388/915 - Sawtooth or ramp waveform generator

• US Classifications

  • 250 - Radiant energy
  • 327 - Miscellaneous active electrical nonlinear devices, circuits, and systems
  • 388 - Electricity: motor control systems