| 摘要 |
PROBLEM TO BE SOLVED: To allow easy implementation of quick and accurate convergence to a target set temperature in an environmental test device.SOLUTION: In the environmental test device which performs feedback control by using a deviation e being a difference between a detected physical quantity Fm of a main sensor arranged in the vicinity of an operation unit (air conditioner) 2 and a target set physical quantity Fo for a control unit 10 under a test environment in which a difference occurs between simultaneously detected values of the main sensor 3 and a sub-sensor 5 arranged apart from the operation unit 2, moving average calculation means 11 acquires differences &Dgr;F between a detected physical quantity Fs of the sub-sensor 5 and the detected physical quantity Fm of the main sensor in time sequence and calculates a moving average MA of the acquired differences between both of the detected physical quantities at a plurality of timings of the time sequence, and controlled variable calculation means 12 corrects the deviation e by the moving average MA of the differences to calculate a corrected deviation e', and a drive control unit 1 controls a drive on the operation unit 2 on the basis of the corrected deviation e'. |
