Electrical motor position controller
US5089759A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 21, 1990 |
| Grant date | Feb 18, 1992 |
| Priority date | — |
| Expiry date | Dec 21, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B2219/43088
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A position controller controls the direction and degrees of rotation of an electrical motor output shaft in response to a stored control program. The stored control program contains a plurality of profiles, each including a plurality of successively executed steps defining the operation sequence of the motor. Each step includes programmed instructions defining a predetermined amount of rotation of the motor output shaft and a predetermined event which must occur before the step is executed. In one embodiment, the controller selectively controls the speed of the motor in each step. The controller supplies a signal, programmed in each step, to a variable frequency A.C. drive which correspondingly varies the frequency of A.C. power supplied to the motor to vary the operating speed of the motor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.