The phrase "a series of control" is not correct in standard English.
It should be "a series of controls" if referring to multiple control mechanisms or measures.
Example: "The project requires a series of controls to ensure quality and compliance throughout the process."
Alternatives: "a set of controls" or "a range of controls."
A series of control shots were administered in front of scores of witnesses, including high-ranking members of the police force.
The assumption has been confirmed by a series of control experiments (Figure 6).
The mechanism of adenosine inducing MAAP to form a G-quadruplex was demonstrated by a series of control experiments.
A series of control reach studies in simulated car driving was used for the development of a comfort model.
The control and protection strategy against a converter side AC fault comprises a series of control and protection operations, i.e., control and protection sequence.
This paper presents a series of control problems in prioritizing building energy retrofit and maintenance plans through a review of recent studies.
The multiple output indicates the possible presence of several target instruments such as a series of control valves in a process installation.
The photoelectrochemical and photoluminescence (PL) results and a series of control experiments (e.g. reaction temperature and radical scavenger) prove this synergistic effect and proposed mechanism.
Z includes a series of control variables to take account of, respectively, the time STW schemes have been in existence and the broader institutional context in which STW schemes operate.
Anaerobic, live culture systems and a series of control systems were prepared that included the following: (1) anaerobic systems with viable bacteria; (2) anaerobic systems with heat killed bacteria; and (3) aerobic systems with viable bacteria.
Other than the key independent variable, we introduced a series of control variables such as GDP per capita, the ratio of urban population, total population, land-area size, and a dummy variable of county-level city (see Table 3).
