Deadband control assistant eliminating offset from setpoint
US6041264A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 27, 1997 |
| Grant date | Mar 21, 2000 |
| Priority date | — |
| Expiry date | Jan 27, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B5/01
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A deadband control assistant, operating as part of a control system, eliminates oscillation of a controlled process output around a desired setpoint. The deadband control defines a deadband range, and steady-state-stabilization-time for the process being controlled. When the process output is within the deadband range and oscillation around the setpoint occurs for the steady-state-stabilization-time, the error is set to zero. The control signal may simultaneously be set, or may settle to a fixed value. The deadband control assistant thus allows the process output to stabilize as close as possible to the desired setpoint. Normal process control may resume once the process output strays outside the deadband range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.