position feedback การใช้

• Simply connecting position feedback would almost always result in unstable behaviour.
• Servo controllers use position feedback to close the control loop.
• It offers closed-loop positioning via its absolute position feedback system.
• Each actuator ram was equipped with transducers for position feedback to the thrust vector control system.
• To ensure the appropriate impulse vector, the controller has accelerometers to obtain precise stylus position feedback on the touch-screen display.
• Position feedback accuracies are higher and the antenna may require a closed loop control system to maintain position under wind loading of the dish surface.
• The interaction of the pendulum instability and the positive position feedback instability to produce a stable system is a feature that makes the mathematical analysis an interesting and challenging problem.
• When two cables are used, one carries power to the servo motors and brakes while the second carries the position feedback for each joint back to the control system.
• Other position feedback methods measure the back EMF in the undriven coils to infer the rotor position, or detect the Kick-Back voltage transient ( spike ) that is generated whenever the power to a coil is instantaneously switched off.
• The EMV motion base is attached by three hydraulic actuators to the frame of the chassis carrying the bulk of unsprung weight, allowing the low-mass body shell to articulate independently and rapidly with micrometer precision by incorporating a position feedback system.
• Note that, as a consequence of the null angle modulation strategy, the position feedback is positive, that is, a sudden command to move right will produce an initial cart motion to the left followed by a move right to rebalance the pendulum.
• A servo system differs from some stepper motor applications in that the position feedback is continuous while the motor is running; a stepper system relies on the motor not to " miss steps " for short term accuracy, although a stepper system may include a " home " switch or other element to provide long-term stability of control.
• A tree often provides numerous additional functions including chemical injection points, well intervention means, pressure relief means, monitoring points ( such as pressure, temperature, corrosion, erosion, sand detection, flow rate, flow composition, valve and choke position feedback ), and connection points for devices such as down hole pressure and temperature transducers ( DHPT ).
• The telescope mount is altitude over azimuth ( alt-az ) which allows the telescope to be very compact ( relatively speaking ) and provides direct load paths from the telescope down through the structure to the pier and foundations . The drive motors used to move the telescope in azimuth and elevation will be servo motors with position feedback will be provided by linear tape encoders.