Control device for a hydrostatic drive for at least two actuators
US4870819A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 22, 1988 |
| Grant date | Oct 3, 1989 |
| Priority date | — |
| Expiry date | Jan 22, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05D16/2097
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A control device for a hydrostatic drive for at least two actuators, having a variable displacement pump whose adjusting device is acted on in accordance with the displacement and/or the flow pressure, wherein each actuator has associated with it, in its hydraulic supply line, a control valve and a preceding displacement controller in the form of a pressure compensator, is simplified while ensuring accurate control. This is achieved by associating with the control device an electronic regulating device which, depending on a measuring element that detects the opening position of the pressure compensator, controls, by means of an adjusting member associated with the adjusting device, the displacement setting of the pump, increasing it as the opening of the pressure compensator(s) becomes larger and decreasing as the opening becomes smaller.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.