An Investigation on Speed Control of a Spindle Cluster Driven by Hydraulic Motor: Application to Metal Cutting Machines

Table 10

Abbreviation.

Symbol	Description
ATACOHS	Automatic transmission and control of hydraulic systems
	Controller
PID	Proportional-Integral-Derivative controller
DAC	Digital-to-analog converter
IDE	Integreted Development Environment
	is the proportional gain, a tuning parameter
	is the integral gain, a tuning parameter
	is the derivative gain, a tuning parameter
e	Error
NB	Negative big
N	Negative
Z	Zero
P	Positive
PB	Positive big
S	Small
MS	Medium Small
M	Medium
MB	Medium Big
B	Big