controller

(redirected from Comptrollers)
Also found in: Dictionary, Thesaurus, Legal, Financial, Acronyms.

controller

the equipment concerned with controlling the operation of an electrical device

Controller

 

a low-voltage electrical device used for starting, speed regulation, reversing, and electric braking of DC and AC motors. It varies the electrical resistance in a control circuit and the connections in the power and excitation circuits of motors. Controllers are usually operated by means of a manual lever or a handwheel; servomotors are used for remote control.

Controllers are built as multistage flat, drum, or cam-operated contact switches. Flat controllers are mainly used where a large number of switching steps are required, as in the starting and regulation of electric motors up to 30–40 kilowatts (kW) in power. Drum controllers are used more often than other types for the direct control of DC motors up to 45 kW and AC motors up to 75 kW in power. As the drum is turned, segmented copper contacts touch fixed contacts, establishing different connections in the motor’s control circuits. For the control of high-powered electric motors where a large number of switching operations occur (up to 600 per hour), greater reliability is obtained with cam-operated controllers having rolling contacts, which provide greater wear resistance than sliding contacts.

REFERENCES

Babikov, M. A. Elektricheskie apparaty, part 2. Moscow-Leningrad, 1956.
Chunikhin, A. A. Elektricheskie apparaty. Moscow, 1967.

V. K. IVANOV

controller

[kən′trōl·ər]
(control systems)

controller

An electric device (or combination of devices) designed to initiate one or more functions of operation, such as starting, stopping, reversing, and speed changing, of the apparatus to which it is connected; operation may be manual or automatic.

controller

A person authorized to provide air traffic control services. The term also refers to radar controllers employed either on air traffic or air defense duties.

controller

(hardware)
Part of a computer, typically a separate circuit board, which allows the computer to use certain kinds of peripheral devices. A disk controller is used to connect hard disks and floppy disks, a network controller is used for Ethernet. Other controllers are: keyboard controller, interrupt controller and graphics controller.

controller

(1) A device used to play video games. See video game controller.

(2) An electronic circuit board or system. In a computer, controllers contain the circuitry to run a peripheral device and are either contained on a plug-in expansion card or on the motherboard. In larger computers, a controller may be contained on one or more boards or in an external, stand-alone cabinet.


References in periodicals archive ?
That legislation was seen by Franchot and others as retaliation for the comptroller's advocacy on expanding state alcohol laws to benefit the craft brewing industry.
I would like to give my appreciation to the comptrollers and financial leaders who were willing to share their insights with me:
Although the Court of Appeals has held that the Comptroller's independent discretion is an aspect of the constitutional protection of the retirement fund, these holdings have come down in fact-specific contexts dealing with encroachments by the state legislature, or so-called "pension raid" scenarios, where the primary purpose of the legislative mandate interfered with the Comptroller's discretion, for a legislative purpose other than improving the fund.
As strategic leaders, comptrollers must be able to lead and motivate their team to achieve these objectives.
The state comptroller suggests making the rates the same.
"This is a pivotal point in time for the clerks and comptrollers, and I look forward to supporting them in their shared commitment to excellence as they seek to effectively and efficiently serve the citizens of Florida."
Most FM officers slowly build their FM resumes over ten years before becoming a comptroller, but individuals accepted into the FMLP are given just two years.
I believe this combination will make me a more valuable asset to both the Office of the Comptroller and the Naval Inventory Control Point," Crackett said.
Retired finance director and comptroller of Madison, Wisconsin.
Hameed Ali, has approved the redeployment of 70 Comptrollers to meet the challenges of fighting smuggling, revenue collection and trade facilitation.
The idea is called Financial Management Week (FM Week)--A financial management symposium that can keep comptrollers and financial managers effective and efficient if implemented at your unit.