# US 5,874,819 A · Control for the drive of an object movable to and fro between two end positions

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- Number: US 5,874,819 A
- Document ID: US5874819A
- Status: Granted
- Kind: A
- Application number: 08/817,468
- Filed: 1997-05-05
- Granted: 1999-02-23
- Earliest claimed: 1994-10-05
- Assignees: Marantec Antriebs-und Steuerungstechnik GmbH & Co. Produktions KG
- Inventors: Michael Hormann
- Web page: https://patentgrep.com/patent/US5874819A

## CPC

- G05B 19/231: {the positional error is used to control continuously the servomotor according to its magnitude}
- E05F 15/668: for overhead wings
- E05F 15/41: Detection by monitoring transmitted force or torque (E05F15/48 takes precedence); Safety couplings with activation dependent upon torque or force, e.g. slip couplings
- E05Y 2201/224: Stops
- E05Y 2201/232: by automatically acting means
- E05Y 2400/33: by using load sensors
- E05Y 2400/34: Pulse count limit setting
- E05Y 2400/342: Pulse count value setting or correcting
- E05Y 2400/354: End positions
- E05Y 2400/57: Disabling thereof
- E05Y 2600/11: by automatically acting means
- E05Y 2600/12: by manual operation
- E05Y 2800/00: Details, accessories and auxiliary operations not otherwise provided for
- E05Y 2900/106: for garages
- G05B 2219/36485: Memorize open and closed state, motion parameters at each start up
- G05B 2219/37285: Load, current taken by motor
- G05B 2219/37624: Detect collision, blocking by measuring change of velocity or torque
- G05B 2219/41099: Calibration by going to two extremes, limits, counting pulses, storing values
- G05B 2219/43194: Speed steps, switch over as function of position
- G05B 2219/45242: Door, panel, window operation, opening, closing
- G05B: CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS (systems for controlling or regulating non-electric variables G05D; systems for regulating electric or magnetic variables G05F; control devices or systems insofar as characterised by mechanical features only G05G)
- E05F: DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05Y: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF

## Abstract

A control system for an electrical motor drive for moving a door between end positions. The two end positions are detected by the control system, and an increment detector associated with the motor drive reproduces the movement cycle of the door. A stop associated with the motor drive marks an end position of the door that corresponds to the open position thereof. This open position is treated as a reference point. A pulse storage device is set to a specific value at this reference point and initiates the beginning of a pulse sequence to reproduce movement of the object between the end positions. The pulse sequence is compared for coincidence with pulses produced by the increment detector upon movement of the door into the opposite end position that corresponds to its closed position.

## Claims

### Claim 1

A control system for an electrical motor drive for moving an object to and from between two end positions in a movement cycle said object being a single or multipart door leaf comprising: a motor driven translational output member in form of a chain, belt, or toothed rod; a slide connected to said output member and coupled to said object and movable along a track; said control system detecting said two end positions and any intermediate positions between said end positions; an increment detector associated with the motor drive for reproducing said movement cycle; stop means associated with said motor drive and marking an end position of the object corresponding to an open position of said door leaf, said open position of said door leaf being a reference point; pulse storing means set to a specific value at said reference point and initiating beginning of a pulse sequence to reproduce movement of the object between said end positions, said pulse sequence being compared for coincidence with pulses produced by said increment detector upon movement of said object into an opposite end position corresponding to a closed position of said door leaf during said movement cycle; means for generating a switch-off signal for said motor drive when said end positions are reached; said pulse sequence being entered in said pulse storing means upon installation of said object; said beginning of said pulse sequence being marked from a point after said object has been moved by hand into said open position of said door leaf at said stop means, said increment detector generating a number of pulses entered in said pulse storing means as a travel-initiating pulse sequence when said object is moved by hand into said opposite end position corresponding to said closed position of said door leaf; said stop means being adjustable along said track, said stop means being adjusted into a stop position for forming an adjustable reference point for determining movement carried out in the installation of said object after controlled movement of said object into a desired end position corresponding to the open position of said door leaf; so that data for normal subsequent operation of the door is automatically stored.

### Claim 2 (depends on 1)

A control system as defined in claim 1, wherein said stop means is fixed in various displacement positions on a guide rail forming said track in a stepped or non-stepped off-set manner.

### Claim 3 (depends on 1)

A control system as defined in claim 1, wherein said stop means has a buffer with a damping deformation distance, said reference point lying in said damping deformation distance.

### Claim 4 (depends on 3)

A control system as defined in claim 3, wherein said damping deformation distance has a force-distance characteristic with progressively increasing tendency in shape of a bent spring characteristic corresponding to a parallel arrangement of two springs having different lengths.

### Claim 5 (depends on 1)

A control system as defined in claim 1, wherein said reference point forms a set signal approaching a specific pulse sequence counting position of said pulse storing means, said counting position being the beginning of a pulse train when said stop means is non-elastic, said counting position corresponding to some pulses before reaching the end position corresponding to the open position of the door leaf when said stop means is resilient.

### Claim 6 (depends on 1)

A control system as defined in claim 1, wherein said motor drive has an AC motor.

### Claim 7 (depends on 1)

A control system as defined in claim 1, wherein said motor drive passes a section of reduced speed at least prior to the end position of said stop means corresponding to the open position of the door leaf.

### Claim 8 (depends on 7)

A control system as defined in claim 7, wherein said pulse sequence is counted down until said section of reduced speed facing said end position at said stop means is reached upon movement against said end position at said stop means.

### Claim 9 (depends on 1)

A control system as defined in claim 1, wherein supply current of power input variation to said motor drive is evaluated for forming said reference point or a switch-on signal when said stop means is abutted mechanically.

### Claim 10 (depends on 1)

A control system as defined in claim 1, wherein an accident prevention function controlled through load conditions of said motor drive is suppressed in a terminal position of movement of said object corresponding to an upper third of the movement prior to reaching said stop means before the open position of said door leaf.

### Claim 11

A control system for an electrical motor drive for moving an object to and from between two end positions in a movement cycle said object being a single or multipart door leaf comprising: a motor driven translational output member in form of a chain, belt, or toothed rod; a slide connected to said output member and coupled to said object and movable along a track; said control system detecting said two end positions and any intermediate positions between said end positions; an increment detector associated with the motor drive for reproducing said movement cycle; stop means associated with said motor drive and marking an end position of the object corresponding to an open position of said door leaf, said open position of said door leaf being a reference point; pulse storing means set to a specific value at said reference point and initiating beginning of a pulse sequence to reproduce movement of the object between said end positions, said pulse sequence being compared for coincidence with pulses produced by said increment detector upon movement of said object into an opposite end position corresponding to a closed position of said door leaf during said movement cycle; means for generating a switch-off signal for said motor drive when said end positions are reached; said pulse sequence being entered in said pulse storing means upon installation of said object; said beginning of said pulse sequence being marked from a point after said object has been moved by hand into said open position of said door leaf at said stop means, said increment detector generating a number of pulses entered in said pulse storing means as a travel-initiating pulse sequence when said object is moved by hand into said opposite end position corresponding to said closed position of said door leaf; said stop means being adjustable along said track, said stop means being adjusted into a stop position for forming an adjustable reference point for determining movement carried out in the installation of object after controlled movement of said object into a desired end position corresponding to the open position of said door leaf; so that data for normal subsequent operation of the door is automatically stored; said stop means being fixed in various displacement positions on a guide rail forming said track in a stepped or non-stepped off-set manner; said stop means having a buffer with a damping deformation distance, said reference point lying in said damping deformation distance; said damping deformation distance having a force-distance characteristic with progressively increasing tendency in shape of a bent spring characteristic corresponding to a parallel arrangement of two springs having different lengths; said reference point forming a set signal approaching a specific pulse sequence counting position of said pulse storing means, said counting position being the beginning of a pulse train when said stop means is non-elastic, said counting position corresponding to some pulses before reaching the end position corresponding to the open position of the door leaf when said stop means is resilient; said motor drive having an AC motor; said motor drive passing a section of reduced speed at least prior to the end position of said stop means corresponding to the open position of the door leaf; said pulse sequence being counted down until said section of reduced speed facing said end position at said stop means is reached upon movement against said end position at said stop means; supply current of power input variation to said motor drive being evaluated for forming said reference point or a switch-on signal when said stop means is abutted mechanically; an accident prevention function controlled through load conditions of said motor drive and suppressed in a terminal position of movement of said object corresponding to an upper third of the movement prior to reaching said stop means before the open position of said door leaf.