control variable


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control variable

[kən′trōl ‚ver·ē·ə·bəl]
(control systems)
One of the input variables of a control system, such as motor torque or the opening of a valve, which can be varied directly by the operator to maximize some measure of performance of the system.

control variable

In programming, a variable that keeps track of the number of iterations of a process. Its value is incremented or decremented with each iteration, and it is compared to a constant or other variable to test the end of the process or loop.
References in periodicals archive ?
f] at the front powertrain level is a function of the control variable [tau] as follows:
The first control variable captures the importance of age demographics as a predictor of crime, which has been a focus in the literature (e.
Under the same system data, control variable limits and constraints, the results for Case 1 and Case 2 obtained using the hybrid GSA-SQP approach reported in this paper are compared to some other algorithms reported in the literature as shown in Table II.
The Irish finance minister, Michael Noonan, has said that he is ready for legislation that would provide power to the central bank to control variable mortgage interest rates.
It is also possible to test for equality of variances in the control variable amount equal to not less than 0/021 and 0/05, then the null hypothesis (assuming equal variances) is rejected.
The authors do not acknowledge the potential problem of inconsistent practices of ELL designation across the public and private sectors, and neither adjust that key control variable accordingly nor report what happens if it is omitted from the statistical model.
The model features Mitsubishi Innovative Valve timing Electronic Control variable valve-timing system, and Electric Power Steering, a seven air bag Supplemental Restraint System, Active Stability Control with Traction Control Logic, Mitsubishi Motors' patented Reinforced Impact Safety Evolution, impact-absorbing safety cell technology, Tyre Pressure Monitoring System and Hill Start Assist (HSA included on CVT-equipped models).
Kemna and Vorst (1990) proposed an analytic expression for Asian options with geometric average using the partial differential equation (PDE) approach, on this basis, geometric average as control variable employed in the Monte Carlo simulation method (Boyle, 1977) was used to obtain satisfactory result for pricing Asian options with arithmetic average.
In this experiment, although mixed air temperature is higher than the set point, it was found that the CUSUM chart for the downstream control variable - the discharge air temperature, is still normal.
In particular, the studies vary in whether to include a control variable for spousal education, a choice that can have substantial effects on outcomes.
Beside stability and quality of control it is often required at synthesis of multi-variable control loop that one control variable causes a change of only one corresponding (proper) controlled variable.
All regressions include GDP per capita growth as a control variable.