CN1025810C

CN1025810C - Multi-motor multi-speed automatic tracing synchronous device

Info

Publication number: CN1025810C
Application number: CN92102910A
Authority: CN
Inventors: 朱祥泰
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-04-23
Filing date: 1992-04-23
Publication date: 1994-08-31
Anticipated expiration: 2007-04-23
Also published as: CN1065759A

Abstract

The present invention relates to presbyopia eye lenses for correcting the phenomenon that old people's vision has no short distance and middle distance aberration. The rate radius of a front lens surface of the presbyopia eye lenses is smaller than the radius of curvature of the back lens surface, the refractive index of the lens surface is orderly corrected when the lens surface eccentrically expands from the geometric center of the lens, and therefore, the breadthways magnification of all principal light is often equal to the breadthways magnification of a paraxial domain. The structure can completely overcome distortion aberration and can greatly increase clearly watching areas.

Description

Multi-motor multi-speed automatic tracing synchronous device

A kind of multi-motor multi-speed automatic tracing synchronous device that is used for processing industry production line, streamline, production line belongs to speed from motion tracking simultaneous techniques field.

Many processing industry production lines, streamline, production line require a plurality of working rigs, motor with certain rotating ratio synchronous operation in the prior art.The operation main frame generally uses AC asynchronous motor, secondary machine to use varying speed motor.Whole use varying speed motors are also arranged.Because the working rig load variations, reasons such as motor speed rate of change 1～6%, working rig speed is asynchronous to making, and all is artificial speed governing or adopts the speed governing of electronic circuit software, remote-control speed-regulation, and precision is not high, influences product quality.U.S. Pat 3906313 also is the automatic controls that two given speed values equate, adopts the electronic circuit software configuration, and the power-supply fluctuation influence is big, neither many working machine, many motors multiple speed synchronous from motion tracking.

The purpose of this invention is to provide a kind of many working rigs, multiple-motor, multiple speed from motion tracking, select rotating ratio arbitrarily from the synchronous loop apparatus of motion tracking by people's requirement, with overcome in the prior art can not many motors multiple speed from motion tracking synchronous operation, influence the problem of crudy.

Design of the present invention is such: it comprises and motor (1,2) axle or working rig (3,4) synchro transmitter (5 of rotating shaft connection, 6), the synchro receiver (8 that is connected with the synchro transmitter output with lead, 7), the synchronizing speed error detector (9) that is connected with the synchro receiver output shaft by gear reduction unit, and actuator (the 10) (as: potentiometer that is connected with synchronizing speed error detector output, voltage regulator, mechanical speed governors mechanism etc.), be characterized in that synchronizing speed error detector (9) is a planet gear differential mechanism, two power shafts (11,12) direction of rotation is opposite, given rotating speed equates that output shaft (13) rotating speed is the poor of two input speeds.Actuator's speed governing meter full scale starting point, terminal point respectively are equipped with the pointer alignment pin.Adopt a plurality of synchro transmitters, synchro receiver group, a plurality of synchronizing speed error detector, a plurality of actuators constituted between a plurality of adjustable-speed motors or between adjustable-speed motor and the asynchronous motor from the motion tracking synchronization loop device.

Further specify its structure and operation principle below in conjunction with accompanying drawing.

Accompanying drawing (1) is that two electromotor velocities are from motion tracking synchronization loop device drive mechanism schematic diagram.Figure (2) is its block diagram.

AC asynchronous motor (2) belt drive implement device (4), adjustable-speed motor (1) gear drive work machine (3).Working rig (3,4) is connected with synchro transmitter (5,6) gear drive respectively, makes synchro transmitter (6) reverse rotation, and the synchronization servo-actuated is rotated; Synchro transmitter (5) is rotated in the forward, and the synchronization servo-actuated is rotated.Synchro transmitter (5,6) connects synchro receiver (7,8) through lead, thus the direction of rotation and the rotating speed of reproduction synchro transmitter (5,6).Synchro receiver (7,8) is given the power shaft (12,11) of synchronizing speed error detector (9) respectively through the identical gear reduction transmission of gearratio, the synthetic differential of the input speed that synchronizing speed error detector (9) is opposite with both direction, export by output shaft (13), CONTROLLED POTENTIAL device (10) rotates, to regulate buncher (1) rotating speed, reach motor (1,2) rotating ratio synchronous operation on request.

Motor (1,2) is respectively work machine (3,4) prime mover, and motor (1,2) rotating speed can equate, also can be unequal; Work machine (3,4) operation rotating speed can equate, also can be unequal.Work machine (4) is given (6) reverse speed-N1 of synchro transmitter.Work machine (3) is given (5) forward rotational speed N2 of synchro transmitter, and is given |-N1|=|N2|, just determined motor (1,2) synchronous speed ratio, and also determined work machine (3,4) synchronous speed ratio simultaneously.

To bump fixed locating stud motionless when motor (2) starting, the inoperative CONTROLLED POTENTIAL device of motor (1) (10) oppositely forward the scale terminal point to from the scale starting point.At this moment the planetary gear of error detector (9) can not revolve round the sun with regard to rotation synchronously, makes (8) one of synchro receivers be rotated in the forward (i.e. idle running) by gear drive.If restart motor (1), synchro transmitter (5) is along with rotation, former being rotated in the forward of synchro receiver (8) (idle running).Superpose again one and reappear synchro transmitter (5) forward rotational speed, CONTROLLED POTENTIAL device (10) leaves terminal point scale forward rotational speed immediately, CONTROLLED POTENTIAL device (10) leaves the terminal point scale immediately and is rotated in the forward decline, the calibration points of adjustable-speed motor (1) and motor (2) synchronization is found in automatic speed regulation, and is motionless synchronously, in like manner, inoperative when motor (2), motor (1) starts, and is as the same.

When operation machine (4) rotation speed change (or work machine (3) rotation speed change), |-N1| ≠ | N2|, the opposite rotating speed of both direction does not wait is input to synchronizing speed error detector (9), synthetic speed discrepancy output, CONTROLLED POTENTIAL device (10) rotates, reach given synchronous speed ratio, synchronous operation until work machine (3,4) rotating speed.

If close down motor (2) earlier, CONTROLLED POTENTIAL device (10) is rotated in the forward from the synchronization calibration points, automatically regulating adjustable-speed motor (1) rotating speed descends, CONTROLLED POTENTIAL device (10) is got back to the starting point scale and is rotated (promptly slowly running), close down motor (1) again, CONTROLLED POTENTIAL device (10) is still in starting point scale position.If close down motor (1) earlier, terminal point scale steady pin is bumped in CONTROLLED POTENTIAL device (10) reverse rotation, and synchro receiver (8) is rotated in the forward (i.e. idle running), closes down motor (2) again, and CONTROLLED POTENTIAL device (10) is still on terminal point scale position.If restart motor (1), CONTROLLED POTENTIAL device (10) is got back on the starting point scale position from the terminal point scale automatically.

Accompanying drawing (3) is a general AC asynchronous motor, and two exchange or dc speed-regulating motor, and the production line machine speed is from the block diagram of motion tracking sychronisation. Sequence number 1 is general AC asynchronous motor, and 5,11 is variable-speed motor, 2,6,12 work machines, and 3,7,13 synchro transmitters, 4,8,14 is synchro-receiver, and 9,15 is synchronous error detector, and 10,16 are the control potentiometer.

Accompanying drawing (4) is the block diagram of three adjustable-speed motor production line machine speeds from the motion tracking synchronization loop device.2,6,12 is adjustable-speed motor, 3,7,13 work machines, 4,8,14 synchro transmitters, 5,9,15 synchro receivers, 10,16 synchronous error detectors, 1,11,17 CONTROLLED POTENTIAL devices.

Accompanying drawing (3), accompanying drawing (4) are the same with the operation principle of accompanying drawing (1), (2). More working rig speed repeat no more from motion tracking synchronization loop device operation principle too.

Outstanding feature of the present invention is: all formed by hardware element, and simple in structure, peace Dress is convenient, and working stability is reliable, long service life, and synchronization accuracy improves more than 500～1500 times greater than 99.998% than prior art.

This device provides every speed regulator speed governing, such as potentiometer, current transformer, pressure regulator, pickoff and the speed governing of various mechanical speed governors mechanism, it is synchronous to carry out two or more motor speed adjustings, changes mechanical hardware into by the regulation and control of electronic circuit software and regulates and control from motion tracking. Realize that many motors, multiple speed are from motion tracking synchronous operation work.

Claims

1, a kind of multi-motor multi-speed automatic tracing synchronous device that is used for processing industry production line, streamline, production line comprises the synchro transmitter (5,6) that is connected with motor (1,2) axle or working rig (3,4) rotating shaft, synchro receiver (8,7) that the usefulness lead is connected with the synchro transmitter output, the synchronizing speed error detector (9) that is connected with the synchro receiver output shaft by gear reduction unit and the actuator (10) that is connected with synchronizing speed error detector output;

It is characterized in that synchronizing speed error detector (9) is a planet gear differential mechanism, the direction of rotation of two power shafts (11,12) is opposite, and given rotating speed equates that output shaft (13) rotating speed is the poor of two input speeds.

2, according to claim 1 from the motion tracking synchronization loop device, it is characterized in that actuator's speed governing meter full scale starting point, terminal point respectively are equipped with the pointer alignment pin.

3, according to claim 1,2 described from the motion tracking synchronization loop device, it is characterized in that using a plurality of synchro transmitters, synchro receiver group, a plurality of synchronizing speed error detectors, a plurality of actuators constituted between a plurality of adjustable-speed motors or between adjustable-speed motor and the asynchronous motor from the motion tracking synchronization loop device.