英语翻译如果我满意,追加更多分数长一点的,3000-4000个单词左右我想要英文的
来源:学生作业帮 编辑:作业帮 分类:英语作业 时间:2024/05/22 04:03:25
英语翻译
如果我满意,追加更多分数
长一点的,3000-4000个单词左右
我想要英文的
如果我满意,追加更多分数
长一点的,3000-4000个单词左右
我想要英文的
CONTROL SYSTEM FOR A WINDING MACHINE
The structure o f a control system for a winding machine was examined.Microprocessor control of the winding
process is based on the use of a system for coupled control of winding parameters.
We investigated the possibility of comprehensive automation of the thread winding process using microprocessor
technology to improve the high-speed winding machine from Klin Khimvolokno Industrial Association.
A block diagram of the winding machine control system is shown in Fig.1.Thread 1,entering winding device with feed
unit 2 at rate 3feed,passes through tensioner 3,thread break 5 tension sensor 4,and is wound on takeup bobbin 7.The bobbin
is rotated by motorM v and the rotation rate is adjusted by the microprocessor as a function of the bobbin winding diameterDb.
The th read is moved along the axis of the pack by a thread spreading mechanism (screw drum),moved by motor M 2 controlled
by the microprocessor with a fixed program.Direct current drives are used.The spreading mechanism also contains friction
cylinder 6,rotated by synchronous motor M 3 and controlled by a change in the frequency of the power transformer.
The thread tension is monitored by sensor 4,end breakage is monitored by sensor 5,rotation rate co b and bobbin winding
diameter D b are controlled by sensors 8 and 9,respectively,while friction cofr and spreading cots rates are monitored by sensors
I0 and 11.Information on those parameters enters the microprocessor through linking and switching devices where the winding
control program stores it.The winding process is optimized in the microprocessor in consideration of the operational data on
the speed regimes,tension,and end breakage are optimized and control signals are elaborated to correct the drive speeds of
motors M1,M2,and M3,and thread holder M 4.
The winding speed is automatically maintained on principles of direct digital control on the microprocessor.According
to the given program,the microprocessor calculates the current linear winding speed (x)l),obtains the error )t,changes the
thyristor control angle as a function of the value of ol,thus acting on x) r The microprocessor simultaneously processes the
new program value of the spreader run frequency and controls the change in the drive rotation rate of motor M2,thus preserving
the required relationship between the indicated parameters.
The microprocessor also regularly determines the cross winding parameter.If its value is a whole number,a signal is
sent to adjust the rotation rate of motor M 3 so that the vertical effect in winding is eliminated.
An additional system for correcting the defined winding speed with the results of measuring the integral thread density
is introduced in the winding speed regulation circuit.This system acts as follows:A signal for continuing (t) winding of the
thread on the bobbin enters the microprocessor from the thread break sensor (5).When the signal to finish winding is received,
the microprocessor calculates the length (L) of the thread on the bobbin by multiplying the duration of winding by the speed:
l= vtt.(1)
The bobbin is moved by a positioner in the robotization equipment to automatic scales from which a signal on the actual
weight of the thread (g) is transmitted to the microprocessor and the actual value of the linear density of the thread is calculated:
Tf=g/l.(2)
Then the actual value of Tf is compared with the assigned Toss (quality control unit) and the value and sign of the error of
determination of the linear density ATis found.IfTf is within acceptable limits,then data on the weight of the thread produced
The structure o f a control system for a winding machine was examined.Microprocessor control of the winding
process is based on the use of a system for coupled control of winding parameters.
We investigated the possibility of comprehensive automation of the thread winding process using microprocessor
technology to improve the high-speed winding machine from Klin Khimvolokno Industrial Association.
A block diagram of the winding machine control system is shown in Fig.1.Thread 1,entering winding device with feed
unit 2 at rate 3feed,passes through tensioner 3,thread break 5 tension sensor 4,and is wound on takeup bobbin 7.The bobbin
is rotated by motorM v and the rotation rate is adjusted by the microprocessor as a function of the bobbin winding diameterDb.
The th read is moved along the axis of the pack by a thread spreading mechanism (screw drum),moved by motor M 2 controlled
by the microprocessor with a fixed program.Direct current drives are used.The spreading mechanism also contains friction
cylinder 6,rotated by synchronous motor M 3 and controlled by a change in the frequency of the power transformer.
The thread tension is monitored by sensor 4,end breakage is monitored by sensor 5,rotation rate co b and bobbin winding
diameter D b are controlled by sensors 8 and 9,respectively,while friction cofr and spreading cots rates are monitored by sensors
I0 and 11.Information on those parameters enters the microprocessor through linking and switching devices where the winding
control program stores it.The winding process is optimized in the microprocessor in consideration of the operational data on
the speed regimes,tension,and end breakage are optimized and control signals are elaborated to correct the drive speeds of
motors M1,M2,and M3,and thread holder M 4.
The winding speed is automatically maintained on principles of direct digital control on the microprocessor.According
to the given program,the microprocessor calculates the current linear winding speed (x)l),obtains the error )t,changes the
thyristor control angle as a function of the value of ol,thus acting on x) r The microprocessor simultaneously processes the
new program value of the spreader run frequency and controls the change in the drive rotation rate of motor M2,thus preserving
the required relationship between the indicated parameters.
The microprocessor also regularly determines the cross winding parameter.If its value is a whole number,a signal is
sent to adjust the rotation rate of motor M 3 so that the vertical effect in winding is eliminated.
An additional system for correcting the defined winding speed with the results of measuring the integral thread density
is introduced in the winding speed regulation circuit.This system acts as follows:A signal for continuing (t) winding of the
thread on the bobbin enters the microprocessor from the thread break sensor (5).When the signal to finish winding is received,
the microprocessor calculates the length (L) of the thread on the bobbin by multiplying the duration of winding by the speed:
l= vtt.(1)
The bobbin is moved by a positioner in the robotization equipment to automatic scales from which a signal on the actual
weight of the thread (g) is transmitted to the microprocessor and the actual value of the linear density of the thread is calculated:
Tf=g/l.(2)
Then the actual value of Tf is compared with the assigned Toss (quality control unit) and the value and sign of the error of
determination of the linear density ATis found.IfTf is within acceptable limits,then data on the weight of the thread produced
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