Control system of automotive air conditioning device
First Claim
1. A control system of automotive air conditioning device, comprising:
- a heater/cooler unit having therein a plurality of control doors by which various air flow modes are provided;
a plurality of identical actuators for actuating the control doors, each actuator including 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 said electric motor by processing both said current position signal and a target position signal applied thereto; and
a control unit for totally controlling said actuators by means of a multiplex communication carried out between said control unit and each of the said actuators, said control unit issuing said target position signal to each of said actuators,wherein the multiplex communication means uses a serial signal having an address part for distinguishing instruction signals applied to the control circuit of said actuators.
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Accused Products
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.
32 Citations
6 Claims
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1. A control system of automotive air conditioning device, comprising:
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a heater/cooler unit having therein a plurality of control doors by which various air flow modes are provided; a plurality of identical actuators for actuating the control doors, each actuator including 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 said electric motor by processing both said current position signal and a target position signal applied thereto; and a control unit for totally controlling said actuators by means of a multiplex communication carried out between said control unit and each of the said actuators, said control unit issuing said target position signal to each of said actuators, wherein the multiplex communication means uses a serial signal having an address part for distinguishing instruction signals applied to the control circuit of said actuators. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification