Apparatus and method for generating clock pulses from a power selsyn multiple motor drive system for a glassware forming machine
US4400192A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 10, 1981 |
| Grant date | Aug 23, 1983 |
| Priority date | — |
| Expiry date | Dec 10, 2001 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03B9/41
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An apparatus and method for generating clock pulses to an electronically controlled glassware forming machine from the variable frequency power present in a power selsyn multiple motor drive system is disclosed. The frequency of the power present in the selsyn rotor windings is subtracted from the frequency of the power present in the selsyn stator windings to generate a difference frequency signal. The difference frequency signal has a frequency which is directly proportional to the speed of the rotating selsyn rotors. The difference frequency signal can be scaled to provide a desired number of clock pulses and reset pulses per machine cycle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.