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In cybernetics and control theory, a setpoint ( SP; [ 1] also set point) is the desired or target value for an essential variable, or process value (PV) of a control system, [ 2] which may differ from the actual measured value of the variable. Departure of such a variable from its setpoint is one basis for error-controlled regulation using ...
Speed 2: Cruise Control is a 1997 American action thriller film produced and directed by Jan de Bont, and written by Randall McCormick and Jeff Nathanson.The sequel to Speed (1994), it tells the story of Annie Porter (Sandra Bullock, reprising her role from the original) and Alex Shaw (Jason Patric), a couple who go on vacation to the Caribbean aboard a luxury cruise ship, which is hijacked by ...
1. electric motor. 2. position feedback potentiometer. 3. reduction gear. 4. actuator arm. A servomotor is a specific type of motor that is combined with a rotary encoder or a potentiometer to form a servomechanism. This assembly may in turn form part of another servomechanism.
Proportional control, in engineering and process control, is a type of linear feedback control system in which a correction is applied to the controlled variable, and the size of the correction is proportional to the difference between the desired value ( setpoint, SP) and the measured value ( process variable, PV).
A Dahlander motor (also known as a pole changing motor, dual- or two speed-motor) is a type of multispeed three-phase induction motor, in which the speed of the motor is varied by altering the number of poles; this is achieved by altering the wiring connections inside the motor. The motor may have fixed or variable torque depending on the ...
An electronic speed control ( ESC) is an electronic circuit that controls and regulates the speed of an electric motor. It may also provide reversing of the motor and dynamic braking . Miniature electronic speed controls are used in electrically powered radio controlled models. Full-size electric vehicles also have systems to control the speed ...
Open-loop controller. In control theory, an open-loop controller, also called a non-feedback controller, is a control loop part of a control system in which the control action ("input" to the system [ 1]) is independent of the "process output", which is the process variable that is being controlled. [ 2] It does not use feedback to determine if ...
Traffic engineers refer to three "E's" when discussing traffic calming: engineering, (community) education, and (police) enforcement.Because neighborhood traffic management studies have shown that residents often contribute to the perceived speeding problem within their neighborhoods, instructions on traffic calming (for example in Hass-Klau et al., 1992 [4]) stress that the most effective ...