APPROACH FOR MONITORING ENERGY CONSUMPTION AND PREVENTIVE MAINTENANCE OF A SYSTEM BASED ON CONTROL LOOP EFFICIENCY
First Claim
1. An approach for controller evaluation comprising:
- providing a controller having one or more controller loops;
operating the one or more controller loops;
measuring settling times of the one or more control loops;
monitoring error values of the one or more control loops; and
determining control loop efficiencies of the one or more control loops from the settling times and error values, respectively.
1 Assignment
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Accused Products
Abstract
An approach for monitoring energy consumption and detecting preventive maintenance issues in a system having control loops and associated devices. Settling time and error value in a control loop may be indicative of the loop'"'"'s efficiency. Error value may be a difference between a measurement of a parameter and a setpoint for the parameter. Degradation of a loop'"'"'s efficiency may be an indication of increased energy consumption by the system. Such degradation may also be indicative of a future defect in a control loop or devices associated with the control loop. Thus, the present approach may provide for energy monitoring and preventive maintenance of the system.
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Citations
20 Claims
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1. An approach for controller evaluation comprising:
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providing a controller having one or more controller loops; operating the one or more controller loops; measuring settling times of the one or more control loops; monitoring error values of the one or more control loops; and determining control loop efficiencies of the one or more control loops from the settling times and error values, respectively. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A system having self evaluation comprising:
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a set one or more field controllers; and one or more devices connected to at least one of the one or more field controllers; and wherein; at least one of the one or more field controllers comprises at least one control loop connected to the at least one or more devices; each control loop has a performance index; and the performance index is determined from an actual value and a setpoint value of a parameter controlled by a control loop. - View Dependent Claims (12, 13, 14, 15)
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16. A method for monitoring a condition of a building controller, comprising:
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monitoring a condition of one or more control loops of a building controller; and wherein monitoring a condition of a control loop comprises monitoring a control loop performance index. - View Dependent Claims (17, 18, 19, 20)
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Specification