Temperature control
First Claim
1. A method for controlling temperature of a plant comprising plural temperature control zones, the method comprising:
- a) producing an effective control parameter for a first temperature control zone for which a signal representing measured temperature is available, the effective control parameter being produced according to an algorithm relating measured temperature, a desired temperature and a control parameter associated with a device affecting temperature in the first temperature control zone, the effective control parameter representing a proportion of the temperature affecting capacity of the device;
b) summing the effective control parameter with an offset value, the offset value representing a proportional offset of the effective control parameter of at least one second temperature control zone relative to the effective control parameter of the first temperature control zone;
c) applying the result of the summing of the effective control parameter and the offset value to control a device affecting temperature in at least one second temperature control zone.
22 Assignments
0 Petitions
Accused Products
Abstract
A method and apparatus are disclosed for controlling temperature of a plant comprising plural temperature control zones, wherein an effective control parameter for a first zone for which a signal representing measured temperature is available is produced according to an algorithm relating measured temperature, a desired temperature and a control parameter associated with a device affecting temperature in the first temperature control zone, the effective control parameter is summed with an offset value representing a proportional offset of the effective control parameter of a second temperature control zone relative to the effective control parameter of the first temperature control zone and the result is applied to control a device affecting temperature in the second temperature control zone. Advantageously, the offset value comprises a fixed amount and a variable amount, the variable amount accounting for dynamic differences in temperature control characteristics of the first and second temperature control zones.
33 Citations
30 Claims
-
1. A method for controlling temperature of a plant comprising plural temperature control zones, the method comprising:
-
a) producing an effective control parameter for a first temperature control zone for which a signal representing measured temperature is available, the effective control parameter being produced according to an algorithm relating measured temperature, a desired temperature and a control parameter associated with a device affecting temperature in the first temperature control zone, the effective control parameter representing a proportion of the temperature affecting capacity of the device; b) summing the effective control parameter with an offset value, the offset value representing a proportional offset of the effective control parameter of at least one second temperature control zone relative to the effective control parameter of the first temperature control zone; c) applying the result of the summing of the effective control parameter and the offset value to control a device affecting temperature in at least one second temperature control zone. - View Dependent Claims (2, 3, 4, 5)
-
-
6. A method for controlling heating of a hot runner system comprising plural temperature control zones, the method comprising:
-
a) producing an effective control parameter for a first temperature control zone for which a signal representing measured temperature is available, the effective control parameter being produced according to an algorithm relating measured temperature, a desired temperature and a control parameter associated with a heating device in the first temperature control zone, the effective control parameter representing a proportion of the heating capacity of the heating device; b) summing the effective control parameter with an offset value, the offset value representing a proportional offset of the effective control parameter of a second temperature control zone relative to the effective control parameter of the first temperature control zone; c) applying the result of the summing of the effective control parameter and the offset value to control a heating device associated with the second temperature control zone. - View Dependent Claims (7, 8, 9)
-
-
10. A method for controlling heating of a hot runner system comprising plural temperature control zones, the method comprising:
-
a) producing an effective control parameter for a first temperature control zone for which a signal representing measured temperature is available, the effective control parameter being produced according to an algorithm relating measured temperature, a desired temperature and a power deliverable to a heater in the first temperature control zone, the effective control parameter representing a proportion of the deliverable power; b) summing the effective control parameter with an offset value, the offset value representing a proportional offset of the effective control parameter of a second temperature control zone relative to the effective control parameter of the first temperature control zone; c) applying the result of the summing of the effective control parameter and the offset value to control a heater associated with the second temperature control zone. - View Dependent Claims (11, 12)
-
-
13. An apparatus for controlling temperature of a plant comprising plural temperature control zones, the apparatus comprising:
-
a) means for producing an effective control parameter for a first temperature control zone for which a signal representing measured temperature is available, the effective control parameter being produced according to an algorithm relating measured temperature, a desired temperature and a control parameter associated with a device affecting temperature in the first temperature control zone, the effective control parameter representing a proportion of the temperature affecting capacity of the device; b) means for summing the effective control parameter with an offset value, the offset value representing a proportional offset of the effective control parameter of a second temperature control zone relative to the effective control parameter of the first temperature control zone; c) means for applying the result of the summing of the effective control parameter and the offset value to control a device affecting temperature in the second temperature control zone. - View Dependent Claims (14, 15, 16, 17, 18, 19)
-
-
20. An apparatus for controlling heating of a hot runner system comprising plural temperature control zones, the apparatus comprising:
-
a) means for producing an effective control parameter for a first temperature control zone for which a signal representing measured temperature is available, the effective control parameter being produced according to an algorithm relating measured temperature, a desired temperature and a control parameter associated with a heating device in the first temperature control zone, the effective control parameter representing a proportion of the heating capacity of the heating device; b) means for summing the effective control parameter with an offset value, the offset value representing a proportional offset of the effective control parameter of a second temperature control zone relative to the effective control parameter of the first temperature control zone; c) means for applying the result of the summing of the effective control parameter and the offset value to control a heating device associated with the second temperature control zone. - View Dependent Claims (21, 22, 23, 24, 25)
-
-
26. An apparatus for controlling heating of a hot runner system comprising plural temperature control zones, the apparatus comprising:
-
a) means for producing an effective control parameter for a first temperature control zone for which a signal representing measured. temperature is available, the effective control parameter being produced according to an algorithm relating measured temperature, a desired temperature and a power deliverable to a heater in the first temperature control zone, the effective control parameter representing a proportion of the deliverable power; b) means for summing the effective control parameter with an offset value, the offset value representing a proportional offset of the effective control parameter of a second temperature control zone relative to the effective control parameter of the first temperature control zone; c) means for applying the result of the summing of the effective control parameter and the offset value to control a heater associated with the second temperature control zone. - View Dependent Claims (27, 28, 29, 30)
-
Specification