Process and apparatus for controlling an interior space temperature of a motor vehicle
First Claim
1. In a process for controlling interior-space temperature of a motor vehicle of a type in which a nominal temperature is preset and an interior space temperature is measured from which a difference value is formed and fed to a controller from which a regulation value is formed and fed to an output stage for cyclically and directionally driving a dc motor which adjusts the position of an adjustable member to influence an amount of heat fed to an interior space of the motor vehicle, with a position-signal of the adjustable member being measured and fed into a control loop, the improvement wherein:
- the position signal is formed by measurement and analysis of partial movements of the dc motor through predetermined angles for activation and further rotation of the dc motor;
wherein said measurement and analysis of partial movements is accomplished by measurement and analysis of a motor current for each activation and each further rotation of the dc motor.
1 Assignment
0 Petitions
Accused Products
Abstract
In a process and apparatus for controlling an interior temperature of a motor vehicle a nominal temperature is set and is used with a sensed interior space temperature to produce a difference value which is fed to a controller (R). The controller produces a controlling value from the difference value which it feeds to an output stage (E) for cyclically and directionally driving a DC motor (M) which adjusts the position of an adjustable member (SG) to influence an amount of heat fed to an interior space (I) of the motor vehicle. A position signal of the adjustable member is measured and fed in a control loop in order to ensure an exact and dependable positioning of the adjustable member, with the positioning signal being formed by measuring and analyzing partial movements of the DC motor through predetermined angles for activations and further rotation of the DC motor.
65 Citations
13 Claims
-
1. In a process for controlling interior-space temperature of a motor vehicle of a type in which a nominal temperature is preset and an interior space temperature is measured from which a difference value is formed and fed to a controller from which a regulation value is formed and fed to an output stage for cyclically and directionally driving a dc motor which adjusts the position of an adjustable member to influence an amount of heat fed to an interior space of the motor vehicle, with a position-signal of the adjustable member being measured and fed into a control loop, the improvement wherein:
-
the position signal is formed by measurement and analysis of partial movements of the dc motor through predetermined angles for activation and further rotation of the dc motor; wherein said measurement and analysis of partial movements is accomplished by measurement and analysis of a motor current for each activation and each further rotation of the dc motor. - View Dependent Claims (2, 3, 4, 5)
-
-
6. In a process for controlling interior-space temperature of a motor vehicle of a type in which a nominal temperature is preset and an interior space temperature is measured from which a difference value is formed and fed to a controller from which a regulation value is formed and fed to an output stage for cyclically and directionally driving a dc motor which adjusts the position of an adjustable member to influence an amount of heat fed to an interior space of the motor vehicle, with a position-signal of the adjustable member being measured and fed into a control loop, the improvement wherein:
-
the position signal is formed by measurement and analysis of partial movements of the dc motor through predetermined angles for activation and further rotation of the dc motor; wherein the position signal is developed from measurement and analysis of Hall voltage changes created from partial movements of the dc motor. - View Dependent Claims (7)
-
-
8. In a process for controlling interior-space temperature of a motor vehicle of a type in which a nominal temperature is preset and an interior space temperature is measured from which a difference value is formed and fed to a controller from which a regulation value is formed and fed to an output stage for cyclically and directionally driving a dc motor which adjusts the position of an adjustable member to influence an amount of heat fed to an interior space of the motor vehicle, with a position-signal of the adjustable member being measured and fed into a control loop, the improvement wherein:
-
the position signal is formed by measurement and analysis of partial movements of the dc motor through predetermined angles for activation and further rotation of the dc motor; wherein said measurement and analysis of partial movements results from measurement and analysis of optical signals which are produced by partial movements of the dc motor. - View Dependent Claims (9)
-
-
10. In a process for controlling interior-space temperature of a motor vehicle of a type in which a nominal temperature is preset and an interior space temperature is measured from which a difference value is formed and fed to a controller from which a regulation value is formed and fed to an output stage for cyclically and directionally driving a dc motor which adjusts the position of an adjustable member to influence an amount of heat fed to an interior space of the motor vehicle, with a position-signal of the adjustable member being measured and fed into a control loop, the improvement wherein:
-
the position signal is formed by measurement and analysis of partial movements of the dc motor through predetermined angles for activation and further rotation of the dc motor; wherein the controller provides pulses to the output stage for driving the dc motor and wherein further running of the dc motor and further analysis of partial movements of the dc motor are suppressed at the end of each pulse. - View Dependent Claims (11, 12, 13)
-
Specification