Home | Links | Contact Us | More About Intellectual Property | Bookmark

Search patents:

Home

Graphic Cards

High-speed-digital-position-monitoring-system

Method for determining whether two pieces of network equipment are directly connected

A detailed description of the embodiments of present invention is provided with respect to FIGS. 1-...

Position detecting system and method

OF THE INVENTION Referring now to FIG. 1, a three-dimensional coordinate system is shown ...

Thermal ionization detector

The invention comprises a conventional smoke detector's radioactive ionization chamber and added ...

Automatic sensitivity adjustment for electro-optic mirror and headlight activation control

The present invention provides a light-responsive vehicle control which overcomes the difficulties ...

Method for advocating particular tires for use and for calculating on site inflation pressures of said tires for a construction vehicle

OF A PREFERRED EMBODIMENT In the text below, a loader will be used as an example. The method ...

System for designating matching condition as selected matching condition to generate an event if that selected matching condition is satisfied

Therefore, it is an object of the present invention to solve the problems in the prior art set ...

Method and system for the identification and the suppression of executable objects

It is an object of the present invention to provide an efficient method for processing Executable O...

Internet weight reduction system

The basic hardware forming the basic setup of the present invention is shown in FIG. 1. A server ...

Electronic schedule display apparatus

The present invention has been made in consideration of the above situation and has as its object ...

Method for selecting position-dependent actions of computer applications programs

The present invention provides a method which allows the user alternatives for selecting a computer ...

High speed digital position monitoring system

Details

Inventors: Ilseman, Kenneth A.; Caddell, Richard W.;
Assignee: Kearney & Trecker Corporation (West Allis, WI)
Primary Examiner: Ruggiero; Joseph F.
Assistant Examiner:
Attorney, Agent or Firm: Quarles & Brady

An electronic control system for a machine tool employs a monitoring system for monitoring the absolute position of a reversibly (and linearly or rotationally) movable moving member in the machine tool. The monitoring system includes a clock, a digital feedback position counter having a predetermined count range, an exciter, a feedback device responsive to movement of the movable member, a digital position storage device, a zero crossing detector, and a zero position counter. The feedback position counter, which operates at a clock frequency, controls the exciter which provides a pulsed exciter signal to the feedback device. The feedback position counter also provides a position count Nc to the position storage device and to the zero position counter. The feedback device provides, through a zero crossing detector, a pulsed feedback signal to the position storage device (and to the zero position counter) and the phase shift between the exciter signal and feedback signal is linearly related to the displacement of the moving member. The position storage device provides a continuously updated position number Np which is also linearly related to member displacement, i.e., the position of the member. The zero position counter typically comprised of a synchronous 4-bit bi-directional binary counter provides a zero position count Nz to the representative of the net number of times the position number Np passes through zero between consecutive samples. A computer, coupled to the position storage device and to the zero position counter, processes the position number Np and the zero position number to unambiguously determine the speed of the moving member.

DETAILED DESCRIPTION The principles of this invention having now been fully explained in connection with the foregoing, we hereby claim as our invention: 1.
An electronic control system for monitoring the position of a moving member which is movable in opposite directions comprising: first means operatively coupled to said moving member for generating first signal information which varies in response to movement of said moving member, said first signal information being ambiguous as to the direction of movement of said moving member when said moving member is moving at speeds greater than a predetermined speed; second means operatively connected to said first means for generating second signal information indicative of which of the opposite directions of movement said movable member is moving in when said moving member is moving at speeds greater than said predetermined speed; and third means operatively connected to said first and second means for processing said first and second signal information to determine the position of said moving member without ambiguity and generating third signal information indicative of the position of said moving member which is usable for control purposes.
2.
The invention according to claim 1 wherein said first means comprises: a clock for generating an output signal at fixed periodic intervals; a feedback position counter having a predetermined count range for generating a position count (Nc) response to the output signal of said clock; excitation means coupled to said feedback position counter for generating an excitation signal responsive to said position count; a feedback device operatively coupled to said excitation means for providing a feedback signal which is phase shifted from said excitation signal in accordance with the displacement of said moving member; and a position storage device operatively coupled to said feedback device and to said feedback position counter for latching said position count therein responsive to said feedback signal from said feedback device and outputting a position number (Np) in accordance with said position count latched in said position storage device

Related patents

	Method and apparatus for pixel clipping source and destination windows in a graphics system Methods and apparatus for pixel clipping source and destination windows in graphics frame buffer systems solve the aforementioned needs in the art. Methods and apparatus ...
	Alarm reporting system OF PREFERRED EMBODIMENT The illustrated system comprises a controlling interface unit (3) linked to respective interfaces (4), (5) and (6) to a public telephone network ...
	System and method for automatic managing geolocation information and associated references for geographic information systems What is claimed is: 1. Method for automatically managing a geographic information database, the geographic information database containing at least a geographical ...
	Method for enhancing the biodegradation of biodegradable organic wastes What is claimed is: 1. In a method for the biodegradation of biodegradable organic wastes, the improvement comprising applying liposomes having vesicles of a diameter of ...
	Barrier for blocking movement of contaminants within an aggregate particulate substrate The present invention creates a barrier to the liquid transport of contaminants through a substrate by circulating a drying carrier through the substrate. Preferably the ...
	System for detection of hazardous events The above objects as well as other objects not specifically enumerated are achieved by a system for detecting the occurrence of anomalies, the system including a ...
	Line-control unit for telecommunication system I claim: 1. In a telecommunication system including a terminal serving a multiplicity of subscriber lines and an automatic exchange at a nodal point joined to said ...
	Electronic key telephone systems What we claim is: 1. An electronic key telephone system, comprising: (1) a plurality of station set means, each including a plurality of switches and each operative to ...
	Switching system control arrangements FIG. 2 presents a block diagram of an exemplary switching system illustrating the principle of the present invention. The system includes two switching modules 1000 and ...
	Protection switching in a multi-channel communications system What is claimed is: 1. In a communications system having a plurality of working channels and a protection channel extending among a plurality of at least three sites, ...

0.034
Archive: All patents - Links Copyright (c)2006 Eipa-patents.org - All rights reserved