140ARI03010 调速器
就伺服驱动器的响应速度来看,转矩模式运算量小,驱动器对控制信号的响应快;位置模式运算量大,驱动器对控制信号的响应慢。
对运动中的动态性能有比较高的要求时,需要实时对电机进行调整。那么如果控制器本身的运算速度很慢(比如PLC,或低端运动控制器),就用位置方式控制。如果控制器运算速度比较快,可以用速度方式,把位置环从驱动器移到控制器上,减少驱动器的工作量,效率(比如大部分中运动控制器);如果有的上位控制器,还可以用转矩方式控制,把速度环也从驱动器上移开,这一般只是控制器才能这么干,而且,这时不需要使用伺服电机。
在数控机床上,伺服调控系统是其不可缺少的一部分。其任务是把数控信息转化为机床进给运动,从而实现控制。由于数控机床对产品加工时要求高,所以采用的伺服控制系统十分关键。
在数控机床上使用的伺服控制系统,其优点主要有:精度高,伺服系统的精度是指输出量能复现输入量的程度。包括定位精度和轮廓加工精度;稳定性好,稳定是指系统在给定输入或外界干扰作用下,能在短暂的调节过程后,达到新的或者恢复到原来的平衡状态。直接影响数控加工的精度和表面粗糙度;快速响应,快速响应是伺服系统动态品质的重要指标,它反映了系统的跟踪精度;调速范围宽,其调速范围可达0—30m/min;低速大转矩,进给坐标的伺服控制属于恒转矩控制,在整个速度范围内都要保持这个转矩,主轴坐标的伺服控制在低速时为恒转矩控制,能提供较大转矩,在高速时为恒功率控制,具有足够大的输出功率。
在机床进给伺服中采用的主要是 [4] 永磁同步交流伺服系统,有三种类型:模拟形式、数字形式和软件形式。模拟伺服用途单一,只接收模拟信号,位置控制通常由上位机实现。数字伺服可实现一机多用,如做速度、力矩、位置控制。可接收模拟指令和脉冲指令,参数均以数字方式设定,稳定性好。具有较丰富的自诊断、报警功能。软件伺服是基于微处理器的全数字伺服系统。其将控制方式和不同规格、功率的伺服电机的监控程序以软件实现。使用时可由用户设定代码与相关的数据即自动进入工作状态。配有数字接口,改变工作方式、更换电动机规格时,只需重设代码即可,故也称伺服。
交流伺服已占据了机床进给伺服的主导地位,并随着新技术的发展而不断完善,具体体现在三个方面。一是系统功率驱动装置中的电力电子器件不断向高频化方向发展,智能化功率模块得到普及与应用;二是基于微处理器嵌入式平台技术的成熟,将控制算法的应用;三是网络化制造模式的推广及现场总线技术的成熟,将使基于网络的伺服控制成为可能。
ROADPRO SST334 3/4 x 5' Double Faced Foam Tape White
ROADPRO SST901 1/2x260 Pipe Thread Tape
ROADPRO SST-90130 Coarse Thread Bolts with Hex Nuts - 5/16 x 1.5 2-Pack
ROADPRO SST-90150 Coarse Thread Bolts with Hex Nuts - .25 x 1 3-Pack
ROADPRO SST-90160 Coarse Thread Bolts with Hex Nuts - .25 x 1.5 2-Pack
ROADPRO SST-90170 Stove Bolts with Hex Nuts - .25 x 1 5-Pack
ROADPRO SST-90180 Sheet Metal Screws - .75 x #10 12-Pack
ROADPRO SST-90190 Stove Bolts with Hex Nuts - 3/16 x 1 8-Pack
Roadpro Stove Bolts w/ Hex Nuts 3/16 X 1 8-pack - SST-90190 SST-90190
RUSSELL STOLL 141-SST 141SST
RUSSELL STOLL 142-SST NSPP 142SST
RUSSELL STOLL 142-SST 142SST
SA201-8G SST Ball Bearing Insert
SA204-12 SST Ball Bearing Insert
SA204-12G SST Ball Bearing Insert
SA204-12GO SST Ball Bearing Insert
SA205-16 SST Single Row Ball Bearing
SA205-16G SST Ball Bearing Insert
SA207-23G SST Ball Bearing Insert
SALF202-10 SST Ball Bearing Insert
SALF205-16 SST Ball Bearing Flange Unit
SALF205-16G SST Ball Bearing Insert
SAMTEC ICA-320-SST NSPP ICA320SST
SAPFL201-8 SST Ball Bearing Flange Unit
SAPP202-10 SST Ball Bearing Pillow Block
SB201-8 SST Ball Bearing Insert
SB202-10 SST Ball Bearing Insert
SB204-12G SST Ball Bearing Insert
SB204-12GO SST Ball Bearing Insert
SB205-16 SST Ball Bearing Insert
SB205-16G SST Ball Bearing Insert
SB205-16GO SST Ball Bearing Insert
SB206-18G SST Ball Bearing Insert
SB206-19G SST Ball Bearing Insert
SB206-19GO SST Ball Bearing Insert
SBFL204-12 SST Ball Bearing Flange Unit
SBFT202-10 SST Ball Bearing Flange Unit
SBPP205-16 SST Ball Bearing Pillow Block
SBPR204-12 SST Ball Bearing Pillow Block
Screw VARIAN SEMICONDUCTOR P1201542 SCREW,SHOULDER,8-32 X 5/16 SST 18-8 OR (10 P
SCREWS KIT-SHEET METAL ASST 135PC SST90135 ROADPRO
SCREWS/NUT KIT-MACHINE ASST 130PC SST90130 ROADPRO
SER204-12 SST Ball Bearing Insert
SER205-16 SST Ball Bearing Insert
SHEET METAL SCREWS #10 X 3/4 12PK SST-90180 ROADPRO
SHINANO KENSHI CO. 1.8° STEP MOTOR SST39D1040
Siliconix SST215 N-Channel Fast DMOS FET Switch, SOT-143, 10pcs
SMC P/N CDP-6A SST PIN SST CLEVIS PIN W/SST WASHERS CDP6A
Snap Hook Carabiner SS T316 - 2" Length
Snap Hook Carabiner SS T316 - 2-3/4" Length
Snap Hook Carabiner SS T316 - 2-3/8" Length
Snap Hook Carabiner SS T316 - 3-1/2" Length
Snap Hook Carabiner SS T316 - 3-1/8" Length
Snap Hook Carabiner SS T316 - 4" Length
SR6-2RS SST Single Row Ball Bearing
SSD42SSBS-B BAYFAST, BLIND OPN-END RIVET .125D, .063-.125GR DMHEAD SST/SST
SSD43SSBS-B BAYFAST, BLIND OPN-END RIVET .125D, .126-.187GR DMHEAD SST/SST
SSD44SSBS-B BAYFAST, BLIND OPN-END RIVET .125D, .188-.250GR DMHEAD SST/SST
SST 27SF010-70-3C-NH PLCC32 256 Kbit / 512 Kbit / 1 Mbit /
SST 27SF512-70-3C-PG SST 27SF512 DIP-28 IC (A273)
SST 29EE020 Qty: 1 flash Ships $1.90 in USA tomorrow!
SST 39SF020A PLCC 32pin BIOS chipset 39SF 020A
SST 49910-05 Ball Single Shield Bearing 4991005
SST 49LF004B-33-4C-NH PLCC-32 2 Mbit / 3 Mbit / 4 Mbit / 8
SST 49LF008A-33-4C-NHE PLCC-32 8 Mbit Firmware Hub
SST 5204-2RS DOUBLE ROW BALL BEARING #J53260
SST 6304Z Bearing 20MM X 52MM X 15MM
SST 6304Z Bearing 20MM X 52MM X 15MM
SST BD204F D/C 9817 Silicon Epitaxial Power Transistor TO-220 Quantity-2
SST BEARING 1635-2RS 16352RS
SST BEARING 6200Z NSPP 6200Z
SST BEARING 6205-C3 NSPP 6205C3
SST BEARING 99502H-C3 NSPP 99502HC3
SST Bearing Single Row Steel Cage Radial Ball Bearing 12mm 6201J NIB
SST DEEP GROOVE BALL BEARING 6205-ZZ, 25MM ID, 52MM OD, 15MM WIDTH
SST DIP-32,1 Mbit / 2 Mbit / 4, SST39SF040-70-4C-PH
SST Flash Memory SST29EE010-150 29EE010-150 DIP (10 pcs)
SST Insert Ball Bearing SB 202-10 SB20210 6203RS
SST Insert Ball Bearing SB202-10PG
SST L44643 L44643
SST MC4016H-1 Chain Sprocket, #40 Pitch, 16 Teeth, 1" Bore, 2.6" outer diameter
SST MPF 39SF020A 70-4C-NH 2MB HUB FIRMWARE FLASH MEMORY CHIP PLCC-32
SST Non keyed pulley
SST PH29EE010-150-4CF DIP 32 D/C
SST Pillow Block Bearing 1 3/4 Bore AK 209
SST R20ZZ Ball Bearing
SST R8ZZQ 1-1/8 OD x 1/2 ID x 5/16 wide Bearing
SST ROLLER CHAIN SPROCKET, 50BS15H, 50BS15H-1, 1" BORE, 15 TEETH, 3-5/16" OD
SST S6203RS, S6203 2RS, SS6203 RS, STAINLESS STEEL SEALED BEARING 17x40x12
SST SB202-10 Ball Bearing
SST Sealed Rubber Bearing W206
SST Single Row Radial Single Shield Bearing 6204-Z 20mm NNB
SST Single Row Radial Single Shield Bearing 6205Z 20mm NNB
SST SOUTH SHORE TRADING POST & SCREW SETS 32 PCS #6
SST SST25LF040A-33-4C-S2 SOP-8
SST SST25VF080B-50-4C-S2AF SOP-8 8 Mbit SPI Serial Flash
SST SST27SF010-90-3C-PH 27SF010 FLASH EEPROM 1Mbit,DIP-32 X 1pc
SST SST27SF512-70-3C-PGE DIP-28 512 Kbit / 1 Mbit/2 Mbit
SST SST28VF040A-200 4 Mbit (512K x8) SuperFlash EEPROM SST28VF040
SST SST29EE512-90-4C-PH DIP
SST SST39SF040-70-4C-PHE DIP-32 4Mbit x 8 - 512k FLASH MEMORY ! - USA SELLER!
SST SST39VF160-90 16 Mbit (x16) Multi-Purpose Flash SST39VF160
SST SST49LF004B-33-4C-NH PLCC 4 Mbit LPC Firmware Flash
SST SST49LF020A-33-4C-NH PLCC32 2 Mbit LPC Flash
SST Stainless Steel Socket Screw Screw 10/32 x 3/16 F
SST UC204-12 NSPP UC20412
SST WP-04M2-12 NSPP WP04M212
SST WP-04M2-12 WP04M212
SST, BALL BEARING, 6205Z, 25 X 52 X 15 MM
SST-1222 Carbide Insert Seat
SST-1624 Carbide Insert Seat
SST2222 "Original" ROHM NPN Transistor 100 pcs
SST25LF020A Chips 4 in total. 2Mbit Serial Flash Chips
SST25V032B-66-4I-S2AF MICROCHIP 8-PIN SOIC SMT FLASH 32MBIT ORIG PACKAGING
SST25VF016B-75-4I-S2AF SST SOP8 SST25VF016 SPI Serial Flash SOP-8 Chip IC
SST25VF040B SST 25VF040B SOP8 8pin BIOS Chip Chipset
SST25VF040B-50-4C-S2AF ORIGINAL
SST27SF010-70-3C-PH Encapsulation:DIP,
SST27SF512-70-3C-NH 27SF512 Many-Time Programmable Flash EEPROM PLCC32 SST
SST27SF512-70-3C-PGE Encapsulation:DIP-28
SST2907 "Original" ROHM Transistor 100 pcs
SST29EE020-120-4C-NH 5V 2M NOR FLASH SST29EE020 PLCC32 SST
SST34HF3284-70-4E-L1PE SST 34HF3284-70-4E-L1PE BGA Stencil Template
SST3904 "Original" ROHM Transistor 100 pcs
SST39LF040-45-4C-WHE, 4 Mbit 512 x 8 3.3 V Multi Purp