95:
such as velocity. Varying the pulse, or blip, allows the mechanism to adjust speed essentially creating a speed controller effect. The repetitive tasks performed by a processor allows a digital drive to be quickly self-adjusting. In cases where mechanisms must adapt to many conditions, this can be convenient because a digital drive can adjust quickly with little effort. A drawback to digital drives is the large amount of energy that is consumed. However, many digital drives install capacity batteries to monitor battery life. The overall feedback system for a digital servo drive is like an analog, except that a microprocessor uses algorithms to predict system conditions.
99:
produce a resulting torque demand. These torque demands request current in the mechanism depending on the feedback loop. This amplifier is referred as a four-quadrant drive because can accelerate, decelerate and brake in either rotating direction. Traditional analog drives consume less energy than digital drives and can offer very high performance in certain cases. When conditions are met, analog drives offer consistency with minimal “jitter” at standstills. Some analog servo drives do not need a torque amplifier and rely on velocity amplifiers for situation where speed is more important.
108:
246:
20:
94:
All servo drives used in industry are digital, analog, or both. Digital drives differ from analog drives by having a microprocessor, or computer, which analyses incoming signals while controlling the mechanism. The microprocessor receives a pulse stream from an encoder which can determine parameters
123:
is the addition of motor feedback. This feedback can be used to detect unwanted motion, or to ensure the accuracy of the commanded motion. The feedback is generally provided by an encoder of some sort. Servos, in constant speed changing use, have a better life cycle than typical AC wound motors.
78:
In a properly configured control system, the servo motor rotates at a velocity that very closely approximates the velocity signal being received by the servo drive from the control system. Several parameters, such as stiffness (also known as proportional gain), damping (also known as derivative
98:
Analog drives control velocity through various electrical inputs usually ±10 volts. Often adjusted with potentiometers, analog drives have plug in “personality cards” which are preadjusted to specific conditions. Most analog drives work by using a tach generator to measure incoming signals and
66:
attached to the servo motor reports the motor's actual status back to the servo drive. The servo drive then compares the actual motor status with the commanded motor status. It then alters the voltage,
62:
in order to produce motion proportional to the command signal. Typically, the command signal represents a desired velocity, but can also represent a desired torque or position. A
86:
Although many servo motors require a drive specific to that particular motor brand or model, many drives are now available that are compatible with a wide variety of motors..
79:
gain), and feedback gain, can be adjusted to achieve this desired performance. The process of adjusting these parameters is called
283:
58:
A servo drive receives a command signal from a control system, amplifies the signal, and transmits electric current to a
24:
156:
119:
machining, factory automation, and robotics, among other uses. Their main advantage over traditional DC or
168:
307:
302:
124:
Servo motors can also act as a brake by shunting off generated electricity from the motor itself.
276:
216:
50:
signal from the servomechanism and continually adjusts for deviation from expected behavior.
36:
111:
OEM servo drive from INGENIA installed on CNC router machine controlling a
Faulhaber motor
8:
192:
269:
80:
257:
107:
253:
138:
133:
40:
210:
296:
245:
75:
to the motor so as to correct for any deviation from the commanded status.
72:
59:
68:
120:
47:
63:
19:
16:
Electronic amplifier used to power electric servomechanisms
116:
23:
Advanced Motion
Control brushless servo amplifier with
294:
212:Analog vs Digital Servos, What's The Difference
277:
208:
284:
270:
106:
18:
295:
169:"DKC Drive Controllers | Indramat USA"
252:This technology-related article is a
89:
240:
13:
102:
14:
319:
244:
219:from the original on 2021-12-19
202:
185:
161:
150:
1:
144:
115:Servo systems can be used in
256:. You can help Knowledge by
7:
209:RcHelpDotCom (2011-05-02),
127:
53:
46:A servo drive monitors the
10:
324:
239:
39:used to power electric
235:
112:
28:
231:
110:
22:
193:"Drive Technologies"
37:electronic amplifier
157:Servo drive manual
113:
90:Digital and analog
81:performance tuning
29:
265:
264:
315:
308:Technology stubs
286:
279:
272:
248:
241:
227:
226:
225:
224:
206:
200:
199:
197:
189:
183:
182:
180:
179:
173:indramat-usa.com
165:
159:
154:
323:
322:
318:
317:
316:
314:
313:
312:
303:Control devices
293:
292:
291:
290:
237:
233:
230:
222:
220:
207:
203:
195:
191:
190:
186:
177:
175:
167:
166:
162:
155:
151:
147:
130:
105:
103:Use in industry
92:
56:
41:servomechanisms
17:
12:
11:
5:
321:
311:
310:
305:
289:
288:
281:
274:
266:
263:
262:
249:
229:
228:
201:
184:
160:
148:
146:
143:
142:
141:
139:Motion control
136:
134:Control theory
129:
126:
104:
101:
91:
88:
55:
52:
15:
9:
6:
4:
3:
2:
320:
309:
306:
304:
301:
300:
298:
287:
282:
280:
275:
273:
268:
267:
261:
259:
255:
250:
247:
243:
242:
238:
234:
218:
214:
213:
205:
194:
188:
174:
170:
164:
158:
153:
149:
140:
137:
135:
132:
131:
125:
122:
118:
109:
100:
96:
87:
84:
82:
76:
74:
70:
65:
61:
51:
49:
44:
42:
38:
34:
26:
21:
258:expanding it
251:
236:
232:
221:, retrieved
211:
204:
187:
176:. Retrieved
172:
163:
152:
114:
97:
93:
85:
77:
57:
45:
32:
30:
73:pulse width
60:servo motor
33:servo drive
297:Categories
223:2019-02-14
178:2023-07-27
145:References
27:connection
121:AC motors
69:frequency
217:archived
128:See also
54:Function
48:feedback
25:armature
64:sensor
35:is an
196:(PDF)
254:stub
117:CNC
71:or
299::
215:,
171:.
83:.
43:.
31:A
285:e
278:t
271:v
260:.
198:.
181:.
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
