The speed controller is proportional-integral with the transmission coefficient [K.sub.R] and the integration constant [tau] provides zero static error
when the load [m.sub.C] changes on the shaft of the mechanism.
It should be noted that the approximation coefficient that determines the limitations level CL to one leads to the emergence of a large static error
, which is especially evident in the presence of total signal noise.
The first command ensures a fast convergence of the system to steady state with insensitivity to external disturbances, while the second takes over steady state to ensure a more smooth and a minimal static error
. To avoid a sudden transition from one controller to another, a gradual switching is used [31-34] which has the following form:
5 results presented the maximum static error
Integration of velocities between transporters can cause static error
when parameter [mu] changes (change of used rubber quality or change of ambience temperature).
The example shows us that the introduction of the threshold induces a static error
since the surface S(x) = 0 is never reached.
This parameter, called repeatability, is the only irreducible and uncorrectable source of static error
in any electromechanical measuring system.
The pressure sensors are available with either 0.5%, 0.25% or 0.15% accuracy full scale static error
. The transducers offer a typical long-term drift of only [less than or equal to] 0.2% span over 1 year.
* The most important part of the technique is the static error
removal, since 91% of the errors were removed before any testing was begun, and it is through these static techniques that computer time usage was reduced.
In this comment I correct the comparative static error
, and then identify and interpret the income and substitution effects.
The purpose of this paper is to design a controller with preview compensation such that the output y(k) of the closed-loop system of (1) tracks the reference signal r(k) without any static error
in the presence of disturbance w(k); namely,
The students create their own algorithms and control programs of movement between floors in two directions (up/ down), they also control the elevator car position with sensor instruments and carry out analysis of dynamics and static errors
with different loads, (Kluchev, 2001).