This thread has been locked.
If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.
https://e2e.ti.com/support/motor-drivers-group/motor-drivers/f/motor-drivers-forum/1267682/mcf8316aevm-set-the-speed-from-the-beginning
您好！
是否可以在没有闭环设置的情况下操作 EVM？ 在启动过程开始时、我无法调整速度。
是否有办法从头开始设置速度？
感谢您的帮助
此致！
利纳斯
您好、Linus：
在启动过程中的哪个时刻您尝试更改速度但它不起作用、您可以检查 ALGORITHUM_STATE 寄存器的值？
您想多解释一下您打算如何使用电机？
此致、
约书亚
你好、Joshua、
例如、如果我持续设置一个低转速、则发动机以更高的转速(具体取决于 GUI 中配置的最大转速)启动、然后降至预期转速。 从此点开始、电机可以根据需要旋转。 我不使用建议使用的控制器。 我通过一个微控制器来控制它、以便通过 EVM 定位 BLDC 电机。 为此、电机将旋转0至50周、从一开始保持可控制的速度将很有帮助。 按照我对该板的理解、无法激活自动读取、否则会失败。 但如果它对我来说有用、我将确定 ALGORITHUM_STATE 的序列。
您应该能够 在电机不处于空闲状态时读取 Algorithm_State 寄存器。 您提到的这种问题发生在许多 I2C 命令在短时间内被发送到器件时。
如果您从待机状态启动电机而不对 EVM 进行下电上电、这种速度问题是否可以重复？
您能否提供您使用的寄存器配置？
若要仅在开环(无闭环)下运行电机、您可以在寄存器字段 algo_CTRL1中将 CLOSED_LOOP_DIS 寄存器设置为1。
是的、问题始终是相同的。 无论您指定哪一个、电路板均以相同的速度启动。
我已经为开环操作设置了寄存器、但不会注意到任何差异。 这是因为在初始空闲状态之后、它进入了开环。 由于运行时间短、这是最后一个状态。 有时还会显示状态 ISD。 我将为您提供"Configuration"。
我也有一个不同的问题。 一开始、我拥有一个评估板。 因为这不适合所需的配置、我买了第二块板、以确保它不是板的缺陷。 在新的电路板上、配置运行时会出现我之前描述的问题。 但另一个板甚至不旋转电机。 任何情况下都显示 IPD_T1_FAULT。 即使我恢复了默认设置、我也无法将其从错误状态中取出。 现在、我的问题是、我的板是否有故障、或者我可以做些什么。
{ "signature": "oneui-register-data", "data": [ [ { "idx": 0, "id": "isd_config", "value": "0x44638C20" }, { "idx": 1, "id": "rev_drive_config", "value": "0x283AF064" }, { "idx": 2, "id": "motor_startup1", "value": "0x4B68DDC0" }, { "idx": 3, "id": "motor_startup2", "value": "0x24AE6000" }, { "idx": 4, "id": "closed_loop1", "value": "0x1A3181B0" }, { "idx": 5, "id": "closed_loop2", "value": "0x1AAD6E3C" }, { "idx": 6, "id": "closed_loop3", "value": "0x0C800002" }, { "idx": 7, "id": "closed_loop4", "value": "0x26898708" }, { "idx": 8, "id": "speed_profiles1", "value": "0x00000000" }, { "idx": 9, "id": "speed_profiles2", "value": "0x00000000" }, { "idx": 10, "id": "speed_profiles3", "value": "0x00000000" }, { "idx": 11, "id": "speed_profiles4", "value": "0x00000000" }, { "idx": 12, "id": "speed_profiles5", "value": "0x00000000" }, { "idx": 13, "id": "speed_profiles6", "value": "0x00000000" } ], [ { "idx": 0, "id": "fault_config1", "value": "0x6FE80206" }, { "idx": 1, "id": "fault_config2", "value": "0x74000000" } ], [ { "idx": 0, "id": "pin_config", "value": "0x00000001" }, { "idx": 1, "id": "device_config1", "value": "0x00100000" }, { "idx": 2, "id": "device_config2", "value": "0x0000B000" }, { "idx": 3, "id": "peri_config1", "value": "0x40000000" }, { "idx": 4, "id": "gd_config1", "value": "0x00000100" }, { "idx": 5, "id": "gd_config2", "value": "0x00200000" } ], [ { "idx": 0, "id": "ana_trim3", "value": "0x48004800" }, { "idx": 1, "id": "ana_trim4", "value": "0x00000000" }, { "idx": 2, "id": "ana_trim5", "value": "0x0000000C" }, { "idx": 3, "id": "ana_trim6", "value": "0x00000000" }, { "idx": 4, "id": "ana_trim7", "value": "0x00000000" }, { "idx": 5, "id": "ana_trim8", "value": "0x00001332" }, { "idx": 6, "id": "ana_trim9", "value": "0x806DC85D" }, { "idx": 7, "id": "ana_trim10", "value": "0xD371013A" } ], [ { "idx": 0, "id": "int_algo_1", "value": "0x00B1407D" }, { "idx": 1, "id": "int_algo_2", "value": "0x000001A7" } ], [ { "idx": 0, "id": "gate_driver_fault_status", "value": "0x00000000" }, { "idx": 1, "id": "controller_fault_status", "value": "0x00000000" } ], [ { "idx": 0, "id": "algo_status", "value": "0x00000000" }, { "idx": 1, "id": "mtr_params", "value": "0x00000000" }, { "idx": 2, "id": "algo_status_mpet", "value": "0x0A000000" } ], [ { "idx": 0, "id": "dev_ctrl", "value": "0x00000000" } ], [ { "idx": 0, "id": "algo_ctrl1", "value": "0x00000001" }, { "idx": 1, "id": "algo_ctrl2", "value": "0x00000000" }, { "idx": 2, "id": "current_pi", "value": "0x00047661" }, { "idx": 3, "id": "speed_pi", "value": "0x00000000" }, { "idx": 4, "id": "dac_1", "value": "0x00000000" }, { "idx": 5, "id": "dac_2", "value": "0x00000000" } ], [ { "idx": 0, "id": "algorithm_state", "value": "0x00000000" }, { "idx": 1, "id": "fg_speed_fdbk", "value": "0x7FFFFFFF" }, { "idx": 2, "id": "bus_current", "value": "0x00000000" }, { "idx": 3, "id": "phase_current_a", "value": "0x00000000" }, { "idx": 4, "id": "phase_current_b", "value": "0x00000000" }, { "idx": 5, "id": "phase_current_c", "value": "0x00000000" }, { "idx": 6, "id": "csa_gain_feedback", "value": "0x00010003" }, { "idx": 7, "id": "voltage_gain_feedback", "value": "0x00000001" }, { "idx": 8, "id": "vm_voltage", "value": "0x01CF8000" }, { "idx": 9, "id": "phase_voltage_va", "value": "0x00000000" }, { "idx": 10, "id": "phase_voltage_vb", "value": "0x00000000" }, { "idx": 11, "id": "phase_voltage_vc", "value": "0x00000000" }, { "idx": 12, "id": "sin_commutation_angle", "value": "0x00000000" }, { "idx": 13, "id": "cos_commutation_angle", "value": "0x00000000" }, { "idx": 14, "id": "ialpha", "value": "0x00000000" }, { "idx": 15, "id": "ibeta", "value": "0x00000000" }, { "idx": 16, "id": "valpha", "value": "0x00000000" }, { "idx": 17, "id": "vbeta", "value": "0x00000000" }, { "idx": 18, "id": "id", "value": "0x00000000" }, { "idx": 19, "id": "iq", "value": "0x00000000" }, { "idx": 20, "id": "vd", "value": "0x00000000" }, { "idx": 21, "id": "vq", "value": "0x00000000" }, { "idx": 22, "id": "iq_ref_rotor_align", "value": "0x00000000" }, { "idx": 23, "id": "speed_ref_open_loop", "value": "0x00000000" }, { "idx": 24, "id": "iq_ref_open_loop", "value": "0x00000000" }, { "idx": 25, "id": "speed_ref_closed_loop", "value": "0x00000000" }, { "idx": 26, "id": "id_ref_closed_loop", "value": "0x00000000" }, { "idx": 27, "id": "iq_ref_closed_loop", "value": "0x00000000" }, { "idx": 28, "id": "isd_state", "value": "0x00000000" }, { "idx": 29, "id": "isd_speed", "value": "0x00000000" }, { "idx": 30, "id": "ipd_state", "value": "0x00000000" }, { "idx": 31, "id": "ipd_angle", "value": "0x00000000" }, { "idx": 32, "id": "ed", "value": "0x00000000" }, { "idx": 33, "id": "eq", "value": "0x00000000" }, { "idx": 34, "id": "speed_fdbk", "value": "0x00000000" }, { "idx": 35, "id": "theta_est", "value": "0x00000000" } ] ] }
我的目标是最迟在本周结束时与您联系。
对于 IPD_T1_FAULT、请尝试降低 IPD_CURR_THR 和 IPD_CLK_FREQ。
至于速度问题、 在低速应用中、无传感器算法的缺点是、在进入可以到达目标速度的闭环之前、需要加快速度以检测 BEMF。 您可以尝试在开环中降低 OL_ACC_A1和 OL_ACC_A2值以降低加速率。 您还可以尝试降低 OPN_CL_Handoff_THR 以更快地转换闭环、尽管将其设置得太低可能会导致发生故障。
如果您以低速为目标、例如低于最大速度的8%、则由于不需要进行 BEMF 测量、有传感器的电机驱动器会在这些较低速度下获得更好的瓶胚。
