Multiplane electromechanical control system

Claim 1

IN AN ELECTROMECHANICAL VIBRATION SYSTEM, MEANS FOR LIMITING THE ACCELERATION DUE TO SAID VIBRATION TO A PREDETERMINED VALUE ON ANY OF THREE MUTUALLY PERPENDICULAR AXES COMPRISING: (A) FIRST, SECOND AND THIRD ACCELEROMETERS, CORRESPONDING TO THE THREE AXES, EACH OF SAID ACCELEROMETER ADAPTED TO PRODUCE AN ELECTRICAL OUTPUT PROPORTIONED TO THE ACCELERATION ON ITS CORRESPONDING AXIS; (B) FIRST, SECOND AND THIRD ADJUSTABLE GAIN, FEEDBACKSTABILIZED AMPLIFIERS, THE OUTPUT OF EACH SAID ACCELEROMETER BEING CONNECTED TO THE INPUT OF SAID ADJUSTABLE GAIN, FEEDBACK-STABILIZED AMPLIFIER WHICH IS CORRESPONDINGLY NUMBERED; (C) FIRST, SECOND AND THIRD INDICATING METERS, EACH SAID METER CONNECTED TO SAID ADJUSTABLE GAIN, FEEDBACKSTABILIZED AMPLIFIER WHICH IS CORRESPONDINGLY NUMBERED SO AS TO INDICATE THE AMPLITUDE OF THE ACCELERATION SIGNAL FLOWING THEREIN, EACH SAID METER HAVING CONNECTED TO IT A CIRCUIT TO PREVENT VARIATION OF INDICATION AT LOW VIBRATION FREQUENCIES; (D) FIRST, SECOND AND THIRD VARIABLE ATTENUATORS, ALL SAID ATTENUATORS BEING GANGED, THE INPUT OF EACH SAID ATTENUATOR BEING CONNECTED TO THE OUTPUT OF SAID ADJUSTABLE GAIN, FEEDBACK-STABILIZED AMPLIFIER WHICH IS CORRESPONDINGLY NUMBERED; (E) FIRST, SECOND AND THIRD FIXED GAIN, FEEDBACK-STABILIZED AMPLIFIERS, THE INPUT OF EACH SAID FIXED GAIN AMPLIFIER CONNECTED TO THE OUTPUT OF SAID VARIABLE ATTENUATOR WHICH IS CORRESPONDINGLY NUMBERED; (F) FIRST, SECOND AND THIRD RECTIFIERS, THE INPUT OF EACH SAID RECTIFIER CONNECTED TO THE OUTPUT OF SAID FIXED GAIN, FEEDBACK-STABILIZED AMPLIFIER WHICH IS CORRESPONDINGLY NUMBERED; (G) THE OUTPUTS OF SAID FIRST AND SECOND RECTIFIERS CONNECTED TOGETHER IN OPPOSITE POLARITY AND CONNECTED TO THE INPUT OF A FIRST LOW PASS FILTER; (H) THE OUTPUT OF SAID FIRST LOW PASS FILTER CONNECTED TO A FIRST THYRATRON, SAID FIRST THYRATRON CONNECTED SO AS TO CONDUCT WHEN THE SIGNAL AT THE CONNECTED TOGETHER OUTPUTS OF SAID FIRST AND SECOND RECTIFIERS IS POSITIVE; (I) A FIRST RELAY, SAID FIRST RELAY HAVING AN OUTPUT AND HAVING FIRST AND SECOND INPUTS CONNECTED RESPECTIVELY TO THE OUTPUTS OF SAID FIRST AND SECOND VARIABLE ATTENUATORS, SAID RELAY ACTUATED BY SAID FIRST THYRATRON SO THAT WHEN SAID FIRST THYRATRON CONDUCTS, THERE IS CONNECTED TO SAID OUTPUT OF SAID FIRST RELAY THE INPUT OF SAID FIRST RELAY WHOSE NUMBER CORRESPONDS TO THE NUMBER OF SAID RECTIFIER HAVING A POSITIVE OUTPUT, AND WHEN SAID FIRST THYRATRON IS NOT CONDUCTING, THE OTHER OF SAID INPUTS OF SAID FIRST RELAY IS CONNECTED TO THE OUTPUT OF SAID FIRST RELAY; (J) A FOURTH FIXED GAIN, FEEDBACK-STABILIZED AMPLIFIER HAVING ITS INPUT CONNECTED TO SAID OUTPUT OF SAID FIRST RELAY; (K) A FOURTH RECTIFIER, HAVING ITS INPUT CONNECTED TO THE OUTPUT OF SAID FOURTH FIXED GAIN, FEEDBACK-STABILIZED AMPLIFIER, AND BEING CONNECTED TOGETHER AT ITS OUTPUT IN OPPOSITE POLARITY WITH THE OUTPUT OF SAID THIRD RECTIFIER; (L) A SECOND LOW PASS FILTER, HAVING ITS INPUT CONNECTED TO THE CONNECTED TOGETHER OUTPUTS OF SAID THIRD AND FOURTH RECTIFIERS; (M) A SECOND THYRATRON, THE OUTPUT OF SAID SECOND LOW PASS FILTER CONNECTED TO SAID SECOND THYRATRON SO THAT SAID SECOND THYRATRON WILL CONDUCT WHEN THE SIGNAL AT THE CONNECTED TOGETHER OUTPUTS OF SAID THIRD AND FOURTH RECTIFIERS IS POSITIVE; (N) A SECOND RELAY, SAID SECOND RELAY HAVING AN OUTPUT AND HAVING FIRST AND SECOND INPUTS CONNECTED RESPECTIVELY TO THE OUTPUTS OF SAID FIRST RELAY AND SAID THIRD VARIABLE ATTENUATOR, SAID SECOND RELAY ACTUATED BY SAID SECOND THYRATRON SO THAT WHEN SAID SECOND THYRATRON IS CONDUCTING, THERE IS CONNECTED TO SAID OUTPUT OF SAID SECOND RELAY THE INPUT OF SAID SECOND RELAY WHICH IS CONNECTED TO THE ELEMENT THROUGH WHICH PASSED THE SIGNAL WHICH BECAME THE THYRATRONTRIGGERING POSITIVE POLARITY SIGNAL AT THE CONNECTED TOGETHER OUTPUTS OF SAID THIRD AND FOURTH RECTIFIERS, AND WHEN SAID SECOND THYRATRON IS NOT CONDUCTING, THE OTHER OF SAID INPUTS OF SAID SECOND RELAY IS CONNECTED TO SAID OUTPUT OF SAID SECOND RELAY, WHEREBY THERE APPEARS AT SAID OUTPUT OF SAID SECOND RELAY AN AMPLIFIED SIGNAL CORRESPONDING TO THE OUTPUT OF SAID ACCELEROMETER WHICH HAS THE LARGEST OUTPUT SIGNAL; (O) MEANS FOR CONTROLLING THE OPERATION OF THE ELECTROMECHANICAL VIBRATION SYSTEM, SAID MEANS CONNECTED TO SAID OUTPUT OF SAID SECOND RELAY AND OPERATING AS A FUNCTION OF THE SIGNAL APPEARING AT SAID OUTPUT.