CN104340785B

CN104340785B - Elevator speed control method

Info

Publication number: CN104340785B
Application number: CN201410550751.0A
Authority: CN
Inventors: 沈方根
Original assignee: YIDA EXPRESS ELEVATOR CO Ltd
Current assignee: YIDA EXPRESS ELEVATOR CO Ltd
Priority date: 2014-10-16
Filing date: 2014-10-16
Publication date: 2016-05-11
Anticipated expiration: 2034-10-16
Also published as: CN104340785A

Abstract

The invention discloses a kind of elevator speed control method, elevator operation is divided into startup speed-raising stage, at the uniform velocity stage and deceleration and stops a layer stage; Described deceleration stops layer stage and is occurred by the triggering apart from node; And startup speed-raising stage and deceleration stop the speed-time curve in layer stage and fix. The present invention can improve the line efficiency of elevator, and can improve langding accuracy.

Description

Elevator speed control method

Technical field

The present invention relates to a kind of elevator speed control method, belong to elevator control technology neckTerritory.

Background technology

Along with socioeconomic development, skyscraper is increasing, and elevator demand also more and moreGreatly, meanwhile, people are more and more higher to the performance requirement of elevator. Ensureing elevator operating efficiencyUnder prerequisite, the security of elevator operation also should not be underestimated. In the prior art, elevator speedControl mode mainly contains with time principle, taking relative distance as principle and taking absolute distance as principleThree kinds of modes.

Speed control method taking the time as principle is by setting a low speed in the stop stageCreep to eliminate cumulative errors, this mode is essentially open loop control mode, not only operation effectRate is low, and langding accuracy is also very low.

Speed control method taking relative distance as principle is by increment is set on traction machineFormula encoder obtains car position indirectly, but owing to existing and skidding between traction sheave and steel wire ropePhenomenon, therefore the step-by-step counting of incremental encoder can not accurately reflect the actual bit of lift carPut.

Speed control method taking absolute distance as principle is generally to arrange absolutely at elevator car topTo value encoder, thereby can avoid having skidding between traction sheave and steel wire rope. This sideIt is taking absolute distance as principle that formula seems, but due to the impact of the elasticity factor of steel wire rope, absolutelyCan not eliminate steel wire rope to the signal of value encoder collection deformation institute occurs in runningThe error of bringing.

Summary of the invention

The object of the invention is to, a kind of elevator speed control method is provided. The present invention canTo improve the line efficiency of elevator, and can improve langding accuracy.

Technical scheme of the present invention: elevator speed control method, is characterized in: by elevatorOperation is divided into startup speed-raising stage, at the uniform velocity stage and deceleration and stops a layer stage; Described deceleration stops a layer rankSection is occurred by the triggering apart from node; And start the speed-raising stage and slow down stop the speed in layer stage-Time graph is fixed. When elevator starts at every turn, all first move fixed speed-time graphThe startup speed-raising stage, this stage finishes automatically to enter the at the uniform velocity stage afterwards, in phase process at the uniform velocityIn, once by triggering apart from node, the deceleration that automatically enters fixed speed-time graph stopsThe layer stage.

In above-mentioned elevator speed control method, the described triggering method apart from node is:Set out in lift car bottom the generating laser that light direction is level, and arrange on hoistwayMultiple apart from node, describedly comprise the light in blind hole and the blind hole being arranged on hoistway apart from nodeReceiver, and every 2 apart from the corresponding floor of node, 2 distance joints of each floorPoint lays respectively at the above and below of floor, the distance node while being respectively used to uplink and downlinkTrigger, when elevator cage operation is during to distance objective position certain distance, the going out of generating laserPenetrate illumination and enter blind hole, make optical receiver receive optical signal, stop a layer stage thereby trigger to slow downGeneration.

In aforesaid elevator speed control method, in described hoistway, be also provided with multiple vertical rowsThe position correction node of cloth (each floor is corresponding multiple position correction node all, and number is more,Flat bed is more accurate), position correction node is made up of the optical receiver in blind hole and blind hole, at electricityThe deceleration of ladder stops after layer stage triggering, and generating laser shines into each blind hole one by one, and light is connectReceive device and receive optical signal, when each optical receiver is received optical signal, just can monitor elevatorThe actual position of car, by this actual position and the theoretical velocity curve that stops layer stage to slowing downCarry out the theoretical position value that integration obtains and compare, as produced difference, control traction machine micro-Turn speed, thereby can make lift car precisely stop layer in continuous error modulation.

In aforesaid elevator speed control method, described each apart from node only in this distanceWhile there is calling signal from floor corresponding to node, the triggering of this node could really come into force, noThis triggering of person will be left in the basket. After, the distance node of certain floor is triggered and elevator do not arriveThe calling signal that this floor presses out during this period of time cannot make elevator stop at this layer, and it can onlyAs come into force in running next time.

Compared with prior art, the present invention is divided into elevator operation to start speed-raising stage, rank at the uniform velocitySection and deceleration stop a layer stage, wherein slow down and stop layer stage with the triggering generation apart from node. ThisBright whole control procedure is that the simple enclosed that is trigger point according to lift car physical location is followedRing is controlled, and in whole rate control process, without calculating in advance, therefore can greatly fallThe error rate of low control procedure. And of the present invention simply ingenious apart from Node configuration mode, canThe physical location (being trigger position) of elevator to be detected very accurately, can produce hardlyError, so Elevator landing can be more accurate, flat bed process also without again slow down creep, because ofThis operational efficiency also can be improved.

Brief description of the drawings

Fig. 1 is embodiments of the invention principle schematic.

Detailed description of the invention

Below in conjunction with drawings and Examples, the present invention is further illustrated, but not as rightThe foundation of the present invention's restriction.

Embodiment. Elevator speed control method, by elevator operation be divided into start the speed-raising stage,At the uniform velocity stage and deceleration stop a layer stage; Described deceleration stops layer stage and is sent out by the triggering apart from nodeRaw; And startup speed-raising stage and deceleration stop the speed-time curve in layer stage and fix. InstituteState apart from the triggering method of node and be: setting out light direction in lift car bottom is swashing of levelOptical transmitting set, and on hoistway, arrange multiplely apart from node, describedly comprise and being arranged on apart from nodeOptical receiver in blind hole and blind hole on hoistway, and every 2 apart from the corresponding Yi Ge of node buildingLayer, 2 of each floor lay respectively at the above and below of floor apart from node, use respectivelyThe triggering of the distance node in the time of uplink and downlink, when elevator cage operation is to distance objective positionWhen certain distance, the emergent light of generating laser shines into blind hole, makes optical receiver receive lightSignal, stops the generation in layer stage thereby trigger to slow down. In described hoistway, be also provided with multiple vertical rowsThe position correction node of cloth, position correction node is made up of the optical receiver in blind hole and blind hole,Stop after layer stage triggering in the deceleration of elevator, generating laser shines into each blind hole one by one, and makesOptical receiver receives optical signal, when each optical receiver is received optical signal, just can monitorThe actual position of lift car, by this actual position and the theoretical velocity of stopping layer stage to slowing downCurve carries out the theoretical position value that integration obtains and compares, and as produced difference, controls tractionMachine fine setting rotating speed, thus can make lift car precisely stop layer in continuous error modulation. InstituteState each apart from node only in the time there is calling signal in this floor corresponding apart from node, this jointThe triggering of point could really come into force, and this triggering of no person will be left in the basket. Because elevator is to moving one deckLou Shi, its speed of service is all to adopt independent control model, so the solution of the present invention alsoAll for the methods of operation more than 2 floors.

Mode of operation of the present invention (taking 7 floor rooms as example):

Between the hoistway Nei1-2 building of elevator, be provided with the Top Runby node of 3rd floors, between layer 2-3Be provided with the Bottom Runby node of 1st floor and the Top Runby node of 4th floors, by that analogy, as Fig. 1Shown in.

When lift car is parked in 1st floor, now there is calling signal in N building (not comprising 2),Elevator starts according to fixing formula, first starts the speed-raising stage to arrive the at the uniform velocity stage again, and at the uniform velocity the stage touchesThe S1 to S (N-1) sending out all cannot come into force, and therefore can not triggering slows down stops a layer stage, until electricLadder cage operation, to triggering SN, slows down and stops a layer stage startup, stops a layer stage in deceleration,The operation of car constantly triggers again range correction node, so both can monitor the true of lift carReal position, by this actual position with stop the theoretical velocity curve in layer stage to slowing down and carry out integrationThe theoretical position value obtaining compares, and as produced difference, controls traction machine fine setting rotating speed,Thereby can make lift car precisely stop layer in continuous error modulation.

In like manner, when lift car is parked in 7th floors, now there is call letter in N building (not comprising 6)Number, elevator starts according to fixing formula, first starts the speed-raising stage to arrive the at the uniform velocity stage, at the uniform velocity againThe D7 to D (N+1) that stage triggers all cannot come into force, and therefore can not triggering slows down stops a layer stage,Stop a layer stage startup until elevator cage operation, to triggering DN, slows down, stop in decelerationIn the layer stage, the operation of car constantly triggers again range correction node, so both can monitor elevatorThe actual position of car, by this actual position and the theoretical velocity curve that stops layer stage to slowing downCarry out the theoretical position value that integration obtains and compare, as produced difference, control traction machine micro-Turn speed, thereby can make lift car precisely stop layer in continuous error modulation.

When have multiple floors to have calling signal simultaneously, be can not owing to coming into force apart from the triggering of nodeCan be simultaneous, there is a sequential in it, and therefore it can be in first distance that triggers and come into forceDuring from node, reduce speed now and stop layer, thereby can carry out successively according to the approach order of lift carStop, without calculating in advance, simply effective.

Claims

1. elevator speed control method, is characterized in that: elevator operation is divided into startupSpeed-raising stage, at the uniform velocity stage and deceleration stop a layer stage; Described deceleration stops layer stage by apart from nodeTriggering occur; And starting the speed-raising stage is solid with the speed-time curve that deceleration stops layer stageFixed; The described triggering method apart from node is: setting out light direction in lift car bottom isThe generating laser of level, and on hoistway, arrange multiple apart from node, described apart from node bagDraw together the optical receiver in blind hole and the blind hole being arranged on hoistway, and every 2 apart from node correspondenceA floor, 2 of each floor lay respectively at the above and below of floor apart from node,The triggering of the distance node while being respectively used to uplink and downlink, when elevator cage operation arrives apart from orderWhen cursor position certain distance, the emergent light of generating laser shines into blind hole, and optical receiver is connectReceive optical signal, stop the generation in layer stage thereby trigger to slow down; In described hoistway, be also provided with multiplePerpendicular straight arranged position correction node, position correction node is by the optical receiver in blind hole and blind holeComposition, stops after layer stage triggering in the deceleration of elevator, and generating laser shines into each blind hole one by one,And make optical receiver receive optical signal, when each optical receiver is received optical signal, just can superviseMeasure the actual position of lift car, by this actual position and the theory of stopping layer stage to slowing downRate curve carries out the theoretical position value that integration obtains and compares, and as produced difference, controlsTraction machine fine setting rotating speed, thus can make lift car precisely stop in continuous error modulationLayer.

2. elevator speed control method according to claim 1, is characterized in that:Described each apart from node only in the time there is calling signal in this floor corresponding apart from node, shouldThe triggering of node could really come into force, and this triggering of no person will be left in the basket.