Electricity: motive power systems – Positional servo systems – Program- or pattern-controlled systems
Patent
1974-05-17
1978-08-15
Scott, James R.
Electricity: motive power systems
Positional servo systems
Program- or pattern-controlled systems
318603, 11212111, G05B 1910
Patent
active
041075927
ABSTRACT:
A machine is comprised of at least one machine part, such as a rotating shaft, which moves cyclically during performance by the machine of first and second operations. The machine also includes a controlled unit which undergoes changes of state for the purpose of initiating and terminating machine operations. A control system for the machine includes a synchronizer for generating synchronizing pulses synchronized with the cyclical movement of the cyclically moving machine part. There is provided a first automatic control arrangement for automatically controlling performance by the machine of the first operation by counting synchronizing pulses generated during such first operation and upon reaching a first predetermined count causing the controlled unit to undergo a change of state, the first automatic control arrangement thereafter becoming inoperative. There is further provided a second automatic control arrangement for automatically controlling performance by the machine of the second operation by counting synchronizing pulses generated during such second operation after such change of state of the controlled unit and upon reaching a second predetermined count causing the first automatic control arrangement to be rendered operative again.
REFERENCES:
patent: 3613608 (1971-10-01), Hinerfeld et al.
patent: 3654882 (1972-04-01), Kamena
patent: 3752098 (1973-08-01), Logan et al.
Feldhaus John J.
Quick-Rotan Becker & Notz KG
Scott James R.
Striker Michael J.
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