Resultant velocity control for members capable of being driven in two component directions simultaneously
US4760513A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 29, 1987 |
| Grant date | Jul 26, 1988 |
| Priority date | — |
| Expiry date | Oct 29, 2007 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21D9/102
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method of and apparatus for controlling the resultant velocity of a member is provided, the resultant velocity being derived by driving the member in two component directions, simultaneously. First sensor means derive a signal indicative of the resultant velocity, the derived signal being compared with a preselected reference signal to derive an error signal constituting a resultant velocity demand signal which is integrated to obtain a resultant amount of movement demand signal. The resultant amount of movement demand signal is selected from `look-up` reference table memory means and corresponding desired values derived for the amounts of movement of the member in the two component directions. The desired values are compared with signals derived from the first and second sensor means sensing the movement of member and error signals are obtained for controlling the driving of the member in the two component directions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.