Control system of automotive air conditioning device
US5803355A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Oct 18, 1996 |
| Grant date | Sep 8, 1998 |
| Priority date | — |
| Expiry date | Oct 18, 2016 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60H1/00835
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A control system of automotive air conditioning device comprises a heater/cooler unit having therein a plurality of control doors by which various air flow modes are provided. A plurality of identical actuators are employed for actuating the control doors. Each actuator includes an electric motor for driving the corresponding control door, a position detector for issuing a current position signal representative of the current angular position assumed by the corresponding control door, and a control circuit for controlling the electric motor by processing both the current position signal as well as a target position signal applied thereto. A control unit is further employed for totally controlling the actuators by means of a multiplex communication carried out between the control unit and each of the actuators. The control unit issues the target position signal to each of the actuators.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.