| 摘要 |
PURPOSE:To prevent a drive mechanism from being restricted or damaged and a human body from being injured by stopping a motor when the actual motor current at the present position is larger than the energizing current corresponding to the position of the drive mechanism which is read out from a memory. CONSTITUTION:Relys RL0, RLc which control the normal or reverse rotation of a motor 11 are respectively energized by relay drivers RD0, RDc. The drive of the drivers RD0, RLc are controlled by the outputs O1, O2 of a microcomputer CPU and limits switches SWL0, SWLc. Signals from open or close instruction switches SWM0-SWC of a roof panel (now shown) which is opened or closed by the motor 11 are inputted to inputs Ia-I9 of the CPU. The current detection signal from a detecting resistor Rmi is inputted through an amplifier AM1 and an A/D converter ADC to the CPU, compared with a comparison reference value stored in an NRAM corresponding to the position of the roof panel. When the detection signal becomes larger H, is set at the outputs O1, O2, and the motor 11 is instantaneously stopped by generative brake. |
