EP0272397A2
Expired / Lapsed
EP
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Electrohydraulic system with distributed control
Assignee: Vickers Inc
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Filing: 1987-10-16
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Granted: —
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Expires: 2007-10-16
Abstract
Abstract An electrohydraulic system which includes a plurality of electrohydraulic devices (12, 14) individually controlled by microprocessor-based control electronics (12a, 14a). A central controller for coordinating operation among the various devices includes a host controller (18) for providing low speed serial and/or parallel output of control signals, and a master controller (20) having a low speed serial and parallel I/O port (40, 42) for connection to the host controller (18), and a high speed serial I/O port (44) connected by a full duplex bidirectional data bus (22) in common to all of the device controllers (12a, 14a).
Inventors
- 👤 Jeffrey P. Cherry
- 👤 Melvin A. Rode
- 👤 Gene Y. Wen
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-28 15:31
CPC Classifications
G; G05; G05B; G05B19/00; G05B19/02; G05B19/18; G05B19/414; G05B2219/00; G05B2219/30; G05B2219/33; G05B2219/33162; G05B2219/33176; G05B2219/33187; G05B2219/33273; G05B2219/33337; G05B2219/33342; G05B2219/41; G05B2219/41309; G05B2219/41318; Y; Y10; Y10S; Y10S706/00; Y10S706/902; Y10S706/903; Y10S706/906
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
239 words
An electrohydraulic system with distributed control comprising a plurality of electrohydraulic devices (12, 14) responsive to electronic control signals for performing hydraulic operations and control means for providing said control signals, said control means including a plurality of individual device control means (12a, 14a) each associated with and dedicated to directly controlling operation at an associated electrohydraulic device (12, 14), central control means (20), and means (22) coupling said central control means (20) to all of said device control means (12a, 14a) for coordinating operation of said electrohydraulic devices (12, 14) controlled thereby, characterized in that said central control means (20) comprises host control means (18) for generating control signals for said device control means (12a, 14a) to coordinate operation thereof and having a low speed I/O port (40, 42) for communicating said control signals, and master control means (20) including a low speed I/O port (40, 42) for coupling to said host control means (18) to receive said control signals, means (36) for storing said control signals, and a high speed serial I/O port (44) for communicating said control signals, and in that said coupling means comprises a high speed serial I/O bus (22) coupled to said high speed serial I/O port (44) and common to all of said device control means (12a, 14a), said device control means (12a, 14a) being constructed for connection to said common bus (22) for individual communication with said master control means (20).
Claim 2
Dependent Claim
239 words
An electrohydraulic system with distributed control comprising a plurality of electrohydraulic devices (12, 14) responsive to electronic control signals for performing hydraulic operations and control means for providing said control signals, said control means including a plurality of individual device control means (12a, 14a) each associated with and dedicated to directly controlling operation at an associated electrohydraulic device (12, 14), central control means (20), and means (22) coupling said central control means (20) to all of said device control means (12a, 14a) for coordinating operation of said electrohydraulic devices (12, 14) controlled thereby, characterized in that said central control means (20) comprises host control means (18) for generating control signals for said device control means (12a, 14a) to coordinate operation thereof and having a low speed I/O port (40, 42) for communicating said control signals, and master control means (20) including a low speed I/O port (40, 42) for coupling to said host control means (18) to receive said control signals, means (36) for storing said control signals, and a high speed serial I/O port (44) for communicating said control signals, and in that said coupling means comprises a high speed serial I/O bus (22) coupled to said high speed serial I/O port (44) and common to all of said device control means (12a, 14a), said device control means (12a, 14a) being constructed for connection to said common bus (22) for individual communication with said master control means (20).
Claim 3
Dependent Claim
26 words
The system set forth in claim 1 wherein said low speed I/O port (40, 42) comprises separate low speed parallel (40) and serial (42) I/O ports.
Claim 4
Dependent Claim
30 words
The system set forth in claim 2 wherein said low speed I/O port (42) comprises an RS232 port, and wherein said high speed I/O port (44) comprises an RS485 port.
Claim 5
Dependent Claim
20 words
The system set forth in claim 1 wherein said means for storing said control signals comprises a non-volatile memory (36).
References Cited (Backward Citations)
No citation records indexed.
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