1、执行偏移计算的目的在于为电流测量和电压测量设置零点。这句话的含义：硬件偏移是不是在电机启动前，校准运放TLV2781偏离1.65V时的硬件校准？如果不是，这句话怎么理解？
2、在电机启动前，运放TLV2781严重偏离1.65V时，软件怎么补偿保证电机采样电流正确？
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